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Sample records for arana patxi azpillaga

  1. Partial Characterization of Venom from the Colombian Spider Phoneutria Boliviensis (Aranae:Ctenidae)

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    Estrada-Gomez, Sebastian; Muñoz, Leidy; Lanchero, Paula; Latorre, Cesar

    2015-01-01

    We report on the first studies on the characterization of venom from Phoneutria boliviensis (Aranae:Ctenidae) (F. O. Pickard-Cambridge, 1897), done with Colombian species. After the electrostimulation extraction process, the venom showed physicochemical properties corresponding to a colorless and water-soluble liquid with a density of 0.86 mg/mL and 87% aqueous content. P. boliviensis venom and RP-HPLC fractions showed hemolytic activity and hydrolyzed the synthetic substrate 4-nitro-3-octano...

  2. Partial Characterization of Venom from the Colombian Spider Phoneutria Boliviensis (Aranae:Ctenidae).

    Science.gov (United States)

    Estrada-Gomez, Sebastian; Muñoz, Leidy Johana Vargas; Lanchero, Paula; Latorre, Cesar Segura

    2015-07-31

    We report on the first studies on the characterization of venom from Phoneutria boliviensis (Aranae:Ctenidae) (F. O. Pickard-Cambridge, 1897), done with Colombian species. After the electrostimulation extraction process, the venom showed physicochemical properties corresponding to a colorless and water-soluble liquid with a density of 0.86 mg/mL and 87% aqueous content. P. boliviensis venom and RP-HPLC fractions showed hemolytic activity and hydrolyzed the synthetic substrate 4-nitro-3-octanoyloxy-benzoic acid, indicating the presence of phospholipases A2 enzymes. The electrophoretic profile showed an important protein content with molecular masses below 14 kDa, and differences between male and female protein content were also revealed. The RP-HPLC venom profile exposes differences between males and female content consistent with the electrophoretic profile. Five fractions collected from the RP-HPLC displayed significant larvicidal activity. Mass analysis indicates the presence of peptides ranging from 1047.71 to 3278.07 Da. Two peptides, Ctenitoxin-Pb48 and Ctenitoxin-Pb53, were partially identified using HPLC-nESI-MS/MS, which showed a high homology with other Ctenitoxins (family Tx3) from Phoneutria nigriventer, Phoneutria keyserlingi and Phoneutria reidyi affecting voltage-gated calcium receptors (Cav 1, 2.1, 2.2 and 2.3) and NMDA-glutamate receptors.

  3. Extraction and partial characterization of venom from the Colombian spider Pamphobeteus aff. nigricolor (Aranae:Theraphosidae).

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    Estrada-Gomez, Sebastian; Vargas Muñoz, Leidy Johana; Quintana Castillo, Juan C

    2013-12-15

    We report the first studies of characterization and extraction of the Pamphobeteus aff. nigricolor (Pocock, 1901) (Aranae:Theraphosidae) venom done in Colombia using the electro-stimulation technique previous anesthesia with isofluorane. After each extraction process, a low viscosity, colorless venom was obtained. This venom showed a 1.01 mg/μl density and a pH of 5. The humidity percentage did not show a significance difference between males and females (P > 0.05) with a general media of 77.49 ± 1.74%. In all cases the venom yielded was variable between males and females, with a media of 22.45 ± 5.17 mg (wet weight) and 4.58 ± 0.94 mg (dry weigh), obtaining larger amounts in females, 28.34 ± 7.49 mg and 5.69 ± 1.36 (wet and dry weight respectively). Venom showed a hemolytic activity dependent of enzymatic active phospholipase and neither coagulant nor proteolytic activities were observed. Electrophoretic profile showed a main protein content with a molecular mass below 14 kDa. RP-HPLC venom profile revealed a difference among male and female venom's content where 17 and 21 main fractions were obtained respectively. Three peptides, Theraphotoxin-Pn1a, Theraphotoxin-Pn1b and Theraphotoxin-Pn2a, were identified using HPLC-nESI-MS/MS. These peptides showed a high identity with other peptides found on Theraphosides which are proved to affect voltage-gated calcium channels. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. Historia oral de una maloca sitiada en el Amazonas: Aspectos de la rebelión de Yarocamena contra la Casa Arana, en 1917

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    Roberto Pineda Camacho

    1989-01-01

    Full Text Available Basándose en fuentes en su mayor parte orales, comparadas, el autor construye la narración histórica: La rebelión de muchos grupos indígenas del Putumayo, trabajadores esclavos en la explotación del caucho, contra su opresor La Casa Arana; cuyo resultado final es la matanza de los caucheros, orquestada por el Ejército peruano.

  5. JONAS, HANS, Memorias. Por Juan Arana

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    Juan Arana

    2012-05-01

    Full Text Available Autor: Hans Jonas (2005. Editorial: Losada, Madrid. Traducción: Illana Giner Comín. Basadas en las conversaciones con Rachel Salamander. Proemiode Lore Jonas. Prólogo de Rachel Salamander. Editor: Christian Wiese. Hans Jonas forma parte, con Koestler,Popper, Heidegger o Wittgenstein, del selecto grupo de pensadores y escritores a quienes tocó vivir en primera persona gran parte de las peripecias del turbulento siglo XX. Pero, como en todo, hay diferencias.La trayectoria vital de Jonas no dibuja el perfil de una desmesura excéntrica, como la de Wittgenstein, ni de una tenaz ambición teórica, como la de Popper, ni de un lamentable olvido del prójimo, como la de Heidegger, ni de un aventurismo desquiciado, como la de Koestler.

  6. A contribution key for the first recorded spider (Arachnidae: Aranae fauna from Sheringal, Khyber Pakhtunkhwa, Pakistan

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    Farzana Khan Perveen

    2016-03-01

    Full Text Available The spiders (Arthropoda: Arachnida have a hard cephalothorax and soft abdomen. They are environmental indicators and play an important role in biological control of pests and vectors. The present study was conducted to prepare the key for the first recorded spider fauna during June 2013-July 2014 in 6 quadrates of Sheringal, i.e., Daramdala, Doki, Guryaal, Samang, Shahoor and Sia-Sheringal, Dir Upper (DU, Khyber Pakhtunkhwa (KP, Pakistan. During the present research, 10 species belong to 7 families, and 10 genera were recorded. The family Sparassidae was the largest among collected families (nSparassidae=19, its body was larger than others, abdomen was narrow at posterior, cephalothorax region was broad and brown, chelicearae were forwarded, legs were strong, body have hairs grey to brown and they were harmless and speedy. Gnphosidae family was the smallest among collected families (nGnphosidae=3, their eyes were heterogeneous, their inner margin of chelicerae were with a wide serrated lamina, posterior row of eyes were much longer than anterior, with lateral rounded maxillae. While the family Hersiliidae was the unique in collected families (nHersiliidae=6, as they are known as two-tail spiders, they have enlarged spinnerets, their male grow up to 8 mm and female up to 10 mm, they have 2 tails and are mimic with host plants. It was concluded that the majority of the collected species belong to the family Sparassidae. It is recommended that further research may be conducted on arboreal and aquatic species of spiders in Sheringal, KP, Pakistan.

  7. CONTRIBUTION TO THE KNOWLEDGE OF THE ARACHNIDS IN THE YUCATAN PENINSULA, MEXICO (EXCLUDING ARANAE AND ACARI

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    Hugo Delfin Gonzalez

    2017-08-01

    Full Text Available The Chelicerata are the second group of arthropods with the highest diversity after insects and they can inhabit almost all types of environments. The most current classification recognizes 11 orders and estimates in the number of species vary from 52,000 to 100,000. We have made an extensive literature review on the diversity of arachnids in the Yucatan Peninsula (YP (excluding spiders and ticks. In Mexico there are 834 known species which represent 6% of the worldwide diversity. In the YP 63 records were found (58 species and 5 genera of arachnids, which represent 6.8% of the Mexican species. According to our research, 28 of the 58 species (48% in the YP were also record in other parts of Mexico, the continent and the world. Undoubtedly, the state of Yucatan is the best represented of the YP. In order to have a better understanding of the diversity of arachnid species is important to promote biological compendiums and sampling programs, which will improve the representation of this group and probably increasing the number of local species.

  8. Peucetia viridis (Blackwall, 1858), caracteres y discusión (Aranae, Oxyopidae)

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    Barrientos Alfageme, José Antonio

    1991-01-01

    New records of the type-species of the genus Peucetia from the south of the Iberian Peninsula, near the Mediterranean Sea, confirm its presence in Europe. P. viridis has been recently the subject of taxonomical confussion. In this paper a more complete description of the species is proposed, illustraded with drawings of its general aspect and genital organs. Algunas citas nuevas de la banda mediterránea, en el sur de la Península Ibérica, confirman la presencia en Europa de la especie-tipo...

  9. Exploring of the first recorded spider (Arachenida: Aranae) species of Sheringal, Khyber Pakhtunkhwa, Pakistan

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    Farzana Perveen; Numan Khan

    2015-01-01

    The spiders (Arthropoada: Arachenida) are one of the groups of grasping animals. Their carapaces are found on the dorsal side of the cephalothorax, which is an important characteristic of spiders. The present study was conducted to explore the first recorded spider species (nti=75) of Sheringal, Dir Upper (DU), Khyber Pakhtunkhwa (KP), Dir Upper, Khyber Pakhtunkhwa, Pakistan. The 10 genera with 10 species under 7 families were recorded from June 2013-July 2014. According to length of legs, th...

  10. CONTRIBUTION TO THE KNOWLEDGE OF THE ARACHNIDS IN THE YUCATAN PENINSULA, MEXICO (EXCLUDING ARANAE AND ACARI)

    OpenAIRE

    Hugo Delfin Gonzalez; Virginia Meléndez-Ramírez; Pablo C. Manrique-Saide; Abdiel Martin-Park; Carlos Arisqueta-Chablé

    2017-01-01

    The Chelicerata are the second group of arthropods with the highest diversity after insects and they can inhabit almost all types of environments. The most current classification recognizes 11 orders and estimates in the number of species vary from 52,000 to 100,000. We have made an extensive literature review on the diversity of arachnids in the Yucatan Peninsula (YP) (excluding spiders and ticks). In Mexico there are 834 known species which represent 6% of the worldwide diversity. In the YP...

  11. Exploring of the first recorded spider (Arachenida: Aranae species of Sheringal, Khyber Pakhtunkhwa, Pakistan

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    Farzana Perveen

    2015-09-01

    Full Text Available The spiders (Arthropoada: Arachenida are one of the groups of grasping animals. Their carapaces are found on the dorsal side of the cephalothorax, which is an important characteristic of spiders. The present study was conducted to explore the first recorded spider species (nti=75 of Sheringal, Dir Upper (DU, Khyber Pakhtunkhwa (KP, Dir Upper, Khyber Pakhtunkhwa, Pakistan. The 10 genera with 10 species under 7 families were recorded from June 2013-July 2014. According to length of legs, the largest spider was the huntsman spider, Halconia insignis Thorell having length of the first leg was 1.9±0.20, however, the same of the last leg was 1.44±0.25 (n=9. In the same contest, the smallest spider was the ground spider, Gnaphosa eucalyptus Ghafoor and Beg having length of the first leg was 0.4±0.08, while the same of the last leg was 0.4±0.08 (n=3. According to length of cephalothorax and abdomen, the largest spider was the wolf spider, Hippasa partita Takidar having length of the cephalothorax was 1.1±0.01, however, the same of the abdomen was 0.7±0.1 (n=6. In the same contest, the smallest spider was the harvestmen, Hadrobunus grandis Sundevall having length of the cephalothorax was 0.1±0.04, while the same of the abdomen was 0.3±0.04 (n=12. During present research, 10 spider species of Sheringal with different sizes were explored. The present research will be useful to educate and create awareness about spiders in the people of Sheringal.

  12. Natural history of Ctenus medius Keyserling, 1891 (Aranae, Ctenidae) II: life cycle and aspects of reproductive behavior under laboratory conditions

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    FOLLY-RAMOS E.; ALMEIDA C. E.; CARMO-SILVA M.; COSTA J.

    2002-01-01

    Ctenus medius Keyserling, 1891 is a wandering spider common in the Brazilian Atlantic Forest. It has been the subject of few studies. Thus, this work aims to elucidate aspects of its natural history, such as the life cycle and reproductive behavior of this species, through laboratory and field observations. Two females with egg sacs were observed in the laboratory and one was observed in field (Barra Mansa, 22º32'S and 44º10'W) until the emergence of the spiderlings. For observation of the im...

  13. Posibles relaciones entre el hábitat de Lycosa fasciiventris(Dufour) (Aranae, Lycosidae) y su comportamiento

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    Ortega Escobar, Joaquín

    1986-01-01

    Se describe el hábitat y los nidos de Lycosa fasciiventris DUFOUR (Araneae, lycosidae);asimismo se estudian algunos parámetros poblacionales de tres localizaciones: densidad, distan-cia entre nidos y proporción entre individuos adultos e individuos subadultos. Se estudia la correlación entre el tamaño de la araña y la profundidad y el diámetro delnido y se discute su relación con el comportamiento de la araña The habitat and nests of Lycosa fasciiventris DUFOUR (Araneae, Lycosidae) are ...

  14. Natural history of Ctenus medius Keyserling, 1891 (Aranae, Ctenidae II: life cycle and aspects of reproductive behavior under laboratory conditions

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    E. FOLLY-RAMOS

    Full Text Available Ctenus medius Keyserling, 1891 is a wandering spider common in the Brazilian Atlantic Forest. It has been the subject of few studies. Thus, this work aims to elucidate aspects of its natural history, such as the life cycle and reproductive behavior of this species, through laboratory and field observations. Two females with egg sacs were observed in the laboratory and one was observed in field (Barra Mansa, 22º32'S and 44º10'W until the emergence of the spiderlings. For observation of the immature stage development, a portion of the spiderlings from the same hatch were taken to the laboratory and watched until sexual maturity. In the field, the period between the oviposition and the emergence of spiderlings was of 36 days. The female selects a site for egg sac deposition and stays there until the spiderlings emerge. Seven days after the emergence, the female abandoned the site where the egg sac was made, concomitant to the spiderlings dispersion from observation's place and until the moment that the spiderlings started to eat. For the spiderlings kept under laboratory conditions, cannibalism was not observed in the first instars (1-4th when sufficient food was offered. Sexual maturity happened in the 14th or 15th instars, with an average of 309.2 to 344.5 days until the last/sexual molt, respectively. Until the date of sexual maturity, there was a mortality rate of 85%. This species is very fragile in captivity. This hampered deductions concerning longevity. Both females and males collected in the field were induced to mate in the laboratory. Courtship movements of males were registered, but the females did not permit the mating. These data may assist in initial biological studies of Ctenus genus and offer comparative parameters for studies of other related species.

  15. Natural history of Ctenus medius Keyserling, 1891 (Aranae, Ctenidae II: life cycle and aspects of reproductive behavior under laboratory conditions

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    FOLLY-RAMOS E.

    2002-01-01

    Full Text Available Ctenus medius Keyserling, 1891 is a wandering spider common in the Brazilian Atlantic Forest. It has been the subject of few studies. Thus, this work aims to elucidate aspects of its natural history, such as the life cycle and reproductive behavior of this species, through laboratory and field observations. Two females with egg sacs were observed in the laboratory and one was observed in field (Barra Mansa, 22º32'S and 44º10'W until the emergence of the spiderlings. For observation of the immature stage development, a portion of the spiderlings from the same hatch were taken to the laboratory and watched until sexual maturity. In the field, the period between the oviposition and the emergence of spiderlings was of 36 days. The female selects a site for egg sac deposition and stays there until the spiderlings emerge. Seven days after the emergence, the female abandoned the site where the egg sac was made, concomitant to the spiderlings dispersion from observation's place and until the moment that the spiderlings started to eat. For the spiderlings kept under laboratory conditions, cannibalism was not observed in the first instars (1-4th when sufficient food was offered. Sexual maturity happened in the 14th or 15th instars, with an average of 309.2 to 344.5 days until the last/sexual molt, respectively. Until the date of sexual maturity, there was a mortality rate of 85%. This species is very fragile in captivity. This hampered deductions concerning longevity. Both females and males collected in the field were induced to mate in the laboratory. Courtship movements of males were registered, but the females did not permit the mating. These data may assist in initial biological studies of Ctenus genus and offer comparative parameters for studies of other related species.

  16. Leftward shift in the voltage-dependence for Ca2+ currents activation induced by a new toxin from Phoneutria reidyi (Aranae, Ctenidae) venom.

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    Vieira, L B; Pimenta, A M C; Richardson, M; Bemquerer, M P; Reis, H J; Cruz, J S; Gomez, M V; Santoro, M M; Ferreira-de-Oliveira, R; Figueiredo, S G; Snutch, T P; Cordeiro, M N

    2007-02-01

    Various neurotoxins have been described from the venom of the Brazilian spider Phoneutria nigriventer, but little is known about the venoms of the other species of this genus. In the present work, we describe the purification and some structural and pharmacological features of a new toxin (PRTx3-7) from Phoneutria reidyi that causes flaccid paralysis in mice. The observed molecular mass (4627.26 Da) was in accordance with the calculated mass for the amidated form of the amino acid sequence (4627.08 Da). The presence of an alpha-amidated C-terminus was confirmed by MS/MS analysis of the C-terminal peptide, isolated after enzymatic digestion of the native protein with Glu-C endoproteinase. The purified protein was injected (intracerebro-ventricular) into mice at dose levels of 5 microg/mouse causing immediate agitation and clockwise gyration, followed by the gradual development of general flaccid paralysis. PRTx3-7 at 1 microM inhibited by 20% the KCl-induced increase on [Ca2+]i in rat brain synaptosomes. The HEK cells permanently expressing L, N, P/Q and R HVA Ca2+ channels were also used to better characterize the pharmacological features of PRTx3-7. To our surprise, PRTx3-7 shifted the voltage-dependence for activation towards hyperpolarized membrane potentials for L (-4 mV), P/Q (-8 mV) and R (-5 mV) type Ca2+ currents. In addition, the new toxin also affected the steady state of inactivation of L-, N- and P/Q-type Ca2+ currents.

  17. Contribución al reconocimiento taxonómico y distribución geográfica de las tarántulas de la familia Theraphosidae (Aranae: Mygalomorphae en Colombia

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    Juan Jacobo Jiménez

    2004-07-01

    Aracnológica del Instituto de Ciencias Naturales de la Universidad Nacional de Colombia, por ser la muestra más representativa de terafósidos en el país. El trabajo taxonómico se realizó en el Instituto Butantan, Brasil, mediante la revisión de caracteres morfológicos y comparaciones con material depositado en la Colección de este Instituto. Los resultados consignados en este estudio arrojan un listado de 20 especies distribuidas en 12 géneros, incluyendo tres posibles especies nuevas para la ciencia al igual que dos especies registradas por primera vez para Colombia. De igual forma, se presentan mapas de distribución geográfica para las especies determinadas y una clave taxonómica interactiva en formato CD-ROM, para la determinación de las especies consignadas. Esta información se constituye como herramienta básica para facilitar el desarrollo de estudios futuros de sus poblaciones y la delineación de medidas para su conservación, que eventualmente conduzcan al uso racional del recurso.

  18. Istraživanje virusnih bolesti u nekih slatkovodnih riba u Republici Kosovo.

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    Rexhepi, Agim; Bërxholi, Kristaq; Scheinert, Peter; Hamidi, Afrim; Sherifi, Kurtesh

    2011-01-01

    U radu je istražena prisutnost virusne hemoragijske septikemije, zarazne hematopoetske nekroze i zarazne nekroze gušterače u potočne pastrve te proljetne viremije šarana u šarana i bijelog glavaša na Kosovu. Uzeti materijal bio je pretražen RT-PCR-om i ugniježđenim PCR-om u laboratoriju službe za životinjsko zdravlje u Münchenu u Njemačkoj. Uzorci šarana i bijeloga glavaša bili su prikupljeni na šaranskom ribnjačarstvu, na jezeru i rijeci, a uzorci potočne pastrve na pet rijeka. U razdoblju o...

  19. Raza, linaje, familia y casa-solar en el País Vasco

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    Juan Aranzadi

    2001-12-01

    Full Text Available In the light of the correlation established by E. Todd between varieties of family structures and kinds of racism, this article analyzes the way in which Sabino Arana's «Basque race» has its roots in a «genealogical concept» of race. This concept was elaborated within a «religious protorracism» related to the Spanish Inquisition's antisemitism, so that, as a consequence, authoritarian family, purity of race and Catholic religion appear as three complementary pillars of the traditional Basque society, whose mythical return is the aim of Sabino Arana's racism.

  20. En el corazón de las tinieblas... del Putumayo, 1890-1932. Fronteras, caucho, mano de obra indígena y misiones católicas en la nacionalización de la Amazonía

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    García Jordán, Pilar

    2001-12-01

    Full Text Available The main goal of this article is to analize the so called «Putumayo scandal», that happened in the first decade of XXth Century for the frontier quarrel between Perú and Colombia. The reporting in the international press of the explotation of Amazonia native people by the Peruvian Amazon Company, which main shareholder was the rubbermen Julio C.Arana, showed the region as a new Congo, and brought about the intervention of Great Britain, Perú, Vatican, Colombia and Arana itself. This article analizes the case with documents of Peruvian Chancellory, of Vatican archives, pamphlets, brochures and bibliography published by the involved parts. It also main observes reasonings hold by the parts, studing with special care those defending the Peruanization of the region hold by Arana and the Peruvian governement.

    Objetivo del artículo es reflexionar sobre el llamado «escándalo del Putumayo» estallado en la primera década del siglo XX, en la región objeto de litigio fronterizo entre Perú y Colombia. La denuncia en la prensa internacional de la explotación de los indígenas amazónicos hecha por la empresa «Peruvian Amazon Company», de la que el principal accionista fue el cauchero Julio C. Arana, presentó la región como un nuevo «Congo peruano» y provocó la intervención de Gran Bretaña, Perú, el Vaticano, Colombia y el propio Arana. A partir de repositorios documentales de la cancillería peruana, de los archivos de la Santa Sede, de la folletística y bibliografía publicada por las partes involucradas se plantea una reflexión sobre el escándalo, incidiendo en los argumentos sostenidos por las partes, en particular la peruanización de la región, defendida por Arana y el gobierno peruano.

  1. Praeceptum | Año 1, Nº 1

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    Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, INDECOPI; Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, INDECOPI

    2014-01-01

    Reflexiones y propuestas que, sobre bases doctrinarias, aportan insumos para el debate y contribuyen al mayor conocimiento de diversas temáticas de la agenda de trabajo del INDECOPI. Presentación - Compatibilidad de las instituciones del proceso civil en el procedimiento administrativo sancionador de protección al consumidor a cargo del INDECOPI, Luis Alberto Liñán Arana. - El rol del denunciante en el marco de los procedimientos administrativos sancionadores, Richard James Martin Tirado...

  2. Contra el libre albedrío: Aclaraciones ulteriores

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    López Corredoira, Martín

    2004-01-01

    Brevemente, Aclaro Alguna De Las Cuestiones En Relación Con Mi Artículo "Contrael Libre Albedrío En El Marco De Las Ciencias Naturales Contemporáneas" (Versiónabreviada De Mi Tesis Doctoral De Filosofía En La Universidad De Sevilla) Enrespuesta A Las Críticas Dadas Por Los Dres.Arana, Castro, Salazar, Choza Ybattaner.

  3. Scolelepis (Polychaeta: Spionidae from the Brazilian coast with a diagnosis of the genus

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    Marcelo Borges Rocha

    2012-08-01

    Full Text Available Five species of Scolelepis have been reported for the Brazilian coast. This study raises this number, with two new records: S. acuta Treadwell, 1914, originally from Eastern Pacific, and Scolelepis andradei Delgado-Blas, Díaz & Liñero-Arana, 2009, from the Caribbean Sea. Furthermore, two species were found to have an expanded geographic range along the Brazilian coast: Scolelepis lighti Delgado-Blas, 2006 and Scolelepis goodbodyi Jones, 1962.

  4. Acercamiento discursivo de Benjamín Saldaña Rocca y Manuel González Prada durante el boom del caucho peruano

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    Ana Varela Tafur

    2017-06-01

    Full Text Available This essay discusses the denunciatory discourse of Benjamin Saldaña Rocca in his newspapers La Sanción and La Felpa, published in Iquitos in 1907 and 1908. Julio César Arana, a Peruvian rubber baron and general manager of the Peruvian Amazon Company, PAC, was the principal target of the complaints of Saldaña Rocca. Socialist apologist, this acerbic journalist blamed Arana and his foremen for the crimes commited against the Indians in the rubber plantations s under his control located in the region of the rivers Putumayo and Caquetá. To fullfil his objectives, Saldaña used a variety of genres such as delations, oral testimony, satirical letrillas, letters, transcriptions and caricatures, which later served to other individuals in their accusations. These, finally, would lead to the economical collapse of Arana. I will show that the press of Saldaña Rocca presents an approach with the ideological postulates of Manuel González Prada, leading exponent of the anarchist movement, from the late nineteenth and early twentieth century. Because of his written legacy Saldaña Rocca could well be considered like one of the main and more daring defender of the human rights of the Amazonian indigenous peoples.

  5. Hábito alimentar do tatu-canastra (Xenarthra, Dasypodidae em uma área de cerrado do Brasil Central Food habits of the giant armadillo (Xenarthra, Dasypodidae in an area of grassland of central Brasil

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    Teresa Cristina S. Anacleto

    2001-09-01

    Full Text Available The diel of the giant armadillo - Priodontes maximus (Kerr,1792 - was studied in the field at Fazenda São Miguel, Unaí, Minas Gerais, Brazil, through 82 samples collected at foraging excavations and 25 fecal samples. In both types of sample the most common item was insects (Isoptera e Hymenoptera and, in less quantity, plant fragments and orhers invertebrates (Aranae, Blattaria, Coleoptera, Diplopoda, Scorpiones. These data suggest the giant armadillo is a specialist on insects with an opportunistic foraging strategy.

  6. Air & Space Power Journal. Volume 28, Number 3, May-June 2014

    Science.gov (United States)

    2014-06-01

    Lt Col Jason Evenson, Maj Cyn- thia Wittnam, Maj Jason Haufschild, Capt Joe Rice , Capt D. Jerred Cooper, Capt Holden Leute, Capt Hudson Graham, Jim...thesis, Naval Postgraduate School, March 2011), 17–38, http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA 543725. 55. MSgt Louis A. Arana-Barradas, “ Black ...Samuels point out, Even with the best of intentions, it is common to make surface-level, of- ten cosmetic , changes in the hope of alleviating the problem

  7. ACADEMIC ADVISORS: VALUES EDUCATED LEADERS

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    Brizeida Mijares

    2008-07-01

    Full Text Available The purpose of this article is to study the academic advisors’ profile from the attitudes in the learning process view point, being the center of which the need that as an educator, the advisor has to be a leader educated in values. The research was documental, according to the theoretical contributions of Arana and Batista (2006,  Ortega and Minguez (2001 and Denis (2000, among others. It is concluded that an academic advisor in values allows individual and collective trasnformation and an education without values as its center, it is a hollow and useless education.

  8. UTJECAJ RAZLIČITIH KRMIVA NA ABIOTIČKE PARAMETRE VODE U UZGOJU ŠARANSKIH MLADUNACA

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    Bogut, Ivan; Opačak, Andelko; Stević, Ivan

    1992-01-01

    Istraživanja utjecaja različitih krmiva na abiotičke parametre vode provedena su u devet ribnjaka ribnjačarstva Koprivna. U svaki ribnjak nasađena su 1, 3 milijuna ličinaka šarana, a podrašćivanje je trajalo 25 dana. U postupku 1. ličinke i mladunci su hranjeni starterom tvrtke »Boha, a postupku 2. hrana je sastavljena od 50% startera »Boha« i 50% suhoga pivskog kvasca, dok su a postupku 3. mladunci hranjeni isključivo pivskim kvascem. Pokusom je utvrđena interakcija navedenih krmiva i nji...

  9. Disturbance caused by freshwater releases of different magnitude on the aquatic macroinvertebrate communities of two coastal lagoons

    Science.gov (United States)

    Cañedo-Argüelles, Miguel; Rieradevall, Maria

    2010-06-01

    The response of the aquatic macroinvertebrate communities to freshwater releases of different magnitude and persistence was investigated in two Mediterranean coastal lagoons (Ca l'Arana and Ricarda). The study was carried out during 14 months (June 2004-July 2005) in which different environmental variables and the macroinvertebrate communities associated with two different habitats, the Phragmites australis belt and the deep area of the lagoons, were sampled monthly. Additionally, potential colonizing sources were identified through the analysis of Chironomidae pupal exuviae. The initial response of the communities to the freshwater releases was similar, being characterized by a peak of opportunistic taxa (mainly Naididae), but the late response was different for each lagoon. In the Ca l'Arana, the magnitude of the freshwater release was higher (salinity dropped below five, which is the limit commonly established for most freshwater species) and its persistence was also higher, allowing the colonization of the lagoon by new insect taxa, which replaced the brackish water species. In the Ricarda, the salinity never dropped beyond five and pre-disturbance conditions were rapidly re-established. This, together with the acclimatizing mechanisms showed by the species Chironomus riparius and Hediste diversicolor, permitted the recovery of the pre-disturbance macroinvertebrate community.

  10. Fate and effects of lindane in a chickpea field

    International Nuclear Information System (INIS)

    Meguenni, H.; Bennaceur, M.; Sennaqui, Z.; Ghezal, F.

    1997-01-01

    The effect of lindane on non-target organisms and the concentrations of its residues in soil and the chickpea crop were investigated over three years. Lindane had adverse effects on some elements of the ecosystem. Ants (Formicidae), spiders (Aranae) and beetles (Carabidae), to a lesser extent, were more affected than Collembola. Organic matter, buried in non-degradable open-mesh bags in the plots, was slightly more degraded in the control plots than in the sprayed plots suggesting that the soil microflora and microfauna had been inhibited by the lindane. However, it was shown by chemical analyses that lindane was degraded in both soils and plants to one tenth of the original concentrations after application in 2 months and 1 month, respectively. Some concentrations (0.2-1.2 mg kg -1 ) of lindane were found in the harvested grain of the chickpea plants. (author). 1 ref., 6 tabs

  11. Dieta de Leptodactylus latrans (Steffen, 1815 na Serra do Sudeste, Rio Grande do Sul, Brasil

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    Daiane Maria Melo Pazinato

    2011-08-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2011v24n4p147 Esse trabalho descreve a dieta de Leptodactylus latrans baseado no conteúdo estomacal de 37 espécimes procedentes do município de Caçapava do Sul, RS, tendo como objetivo analisar qualitativa e quantitativamente essa dieta. As amostras foram coletadas no período de janeiro de 2007 a fevereiro de 2008. A composição da dieta foi analisada sob estereomicroscópio e identificada até o nível de ordem, estando composta por 17 categorias de presas. Coleoptera e Aranae foram os itens mais frequentes com 55% e 22,5% respectivamente. Volumetricamente os itens mais importantes foram Crustacea, Decapoda (15,5% e Amphibia (13,59%.

  12. Public Ethics in Educational Organizations: How to Manage For Achieving Common Wealth

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    Ana Prieto Sánchez

    2007-04-01

    Full Text Available The objective of this essay is to reflect about the rol that should be assumed by the management of the educational organizations, as public administration’s leaders, under a perspective of public ethics based on values, like fundamental pillars of how to achieve the common wealth. The method used was documentary, consulting authors as Aranguren (1996, Santana (2000, Arana (2000 y Camargo (1998. It could be concluded: the educational manager as ethics public leader, should encourage the social learning of values to change from a right ethics to a responsibility ethics, in order to obtain a social transformation. The education and the educational policies are the way to achieve the convivence and the common wealth, when they are practiced by the ethics manager, presents in the educational organizations.

  13. Rubber, Exploitation and War: the Configuration of National Borders and the Pillaging of Indigenous People in the Amazon

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    Tomás Uribe Mosquera

    2013-01-01

    Full Text Available The border shared by the countries of theAmazon was reset in the republican period notwithout some difficulty due to its remoteness.Such reconfiguration was motivated by theprivate interests of farmers, exporters and businessmen,of which the most important onein the common border between Peru, Colombiaand Brazil was the Casa Arana. The authorreviews the case of the pillaging of indigenousgroups in that geographical axis carried outby such company in places like La Pedrera, ElEncanto and La Chorrera, and describes therelated experiences of a uitoto woman. The warbetween Colombia and Peru is thus analysedfrom the perspective of this reconfigurationand the geopolitical context at the time. Thefinal section highlights the need for an agendafor the justice and reparation of the indigenousgroups that were victims of this genocide.

  14. Edificio ex Estación de FF CC y actual sede del Gobierno, Región del Bío-Bío

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    Alfredo Palacios Barra

    2007-11-01

    Full Text Available Del período de la arquitectura Modernista, el edificio de la ex Estación de Ferrocarriles de Concepción, construído el año 1941, es obra del arquitecto Luis Herreros. De proporciones nobles y fachada austera, la distribución y concepción urbanística de la obra, compone un volumen horizontal de 4 pisos que logra un equilibrio a nivel de conjunto, con un eje vertical de una pronunciada torre de 24 m de altura. Este hito, constituye un importante referente urbano ubicado en la perspectiva de la ex calle Comercio, hoy Barros Arana y próximo Eje Bicentenario de Concepción, la más importante vía comercial de la ciudad.

  15. Perfeccionismo positivo / negativo y calidad de vida percibida en estudiantes de Psicología, Medicina e Ingeniería de la Ciudad de Buenos Aires Positive / negative perfectionism and perceived quality of life in Psychology, Medicine and Engineering students of the city of Buenos Aires

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    Fernán Guido Arana

    2010-12-01

    Full Text Available El objetivo del presente estudio es dar cuenta de la relación entre el perfeccionismo en sus tres dimensiones (Altos Estándares -AE-, Orden -O- y Discrepancia-D- y la calidad de vida percibida (CV en tres muestras de estudiantes universitarios de las carreras de Psicología, Medicina e Ingeniería de la Ciudad de Buenos Aires. La muestra estuvo conformada por 476 estudiantes que completaron los siguientes instrumentos: cuestionario sociodemográfico, la almost Perfect Scale-revised (APS-R, Slaney, Rice, Mobley, Trippi, & Ashby, 2001; adaptación: Arana, Keegan, & Rutsztein, 2009 y el Inventario de Calidad de Vida Percibida (ICV, Mikulic, 2006. Los resultados sugieren una asociación signiicativa para un aspecto del perfeccionismo positivo (O y una alta CV percibida, y para el perfeccionismo negativo (D en relación a una baja CV percibida. Diferencias halladas en las diversas carreras para estas dimensiones indican la necesidad de atender a las variables contextuales especíicas para el análisis de este constructo.The aim of this study is to account for the relationship between perfectionism in its three dimensions (High Standards -HS-, Order -O-, and Discrepancy -D- and the perceived quality of life (QL in three samples of university students of Psychology, Medicine and Engineering of the City of Buenos Aires. The sample consisted of 476 students who completed the following in struments: Socio-demographic questionnaire, the Almost Perfect Scale-revised (APS-R, Slaney, Rice, Mobley, Trippi, & Ashby, 2001; adaptation: Arana, Keegan, & Rutsztein, 2009 and the Inventario de Calidad de Vida Percibida (ICV, Mikulic, 2006. Results suggest a signiicant association for one aspect of positive perfectionism (O and a perceived high QL, and for negative perfectionism (D and a perceived low QL. Differences found for these dimensions in the students of each career indicate the need to pay attention to specific contextual variables for the analysis of this

  16. Drug Policy and the Ultima Ratio in A Social and Democratic State, Spain

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    Alison Hogg

    2013-01-01

    Full Text Available As a Member State of the UN and the EU, Spain's drug policy is heavily conditioned by these external superior ‘legal personalities’. Although, the Spanish legislature has enacted amendments to legislation on illicit substances over the last ten years to attenuate excessively punitive law, their interpretation and internal application of conventions on drug legislation has by in large overlooked the ultima ratio principle i.e. minimum intervention (Arana 2012. Spain’s criminal legislation is presented as well as the consequences of the prohibition of illicit substances in this jurisdiction. Finally, alternatives that have emerged in the Basque Autonomous Community to counter the effects of its criminalisation are briefly discussed and promoted as a means of abating external legal constraints that have serious social and legal ramifications. Como miembro de ONU y UE, la política de drogas española está fuertemente condicionada por la legislación emanada de estas entidades jurídicas. A pesar de eso, los legisladores españoles han introducido reformas en la legislación sobre sustancias ilícitas en los últimos diez años para atenuar una legislación excesivamente punitiva, su interpretación y aplicación interna de convenios sobre legislación en materia de drogas en gran parte no toma en cuenta el principio del ultimo ratio (Arana 2012. Se presenta la legislación penal española en materia de sustancias ilícitas y también los efectos que ésta tiene sobre la jurisdicción. Finalmente, las alternativas surgidas en la Comunidad Autónoma Vasca para contrarrestar los efectos de la criminalización, son brevemente discutidas y promovidas como una manera para amainar las limitaciones jurídicas que tienen importantes y serias ramificaciones sociales y legales. DOWNLOAD THIS PAPER FROM SSRN: http://ssrn.com/abstract=2200886

  17. Conductas y actitudes alimentarias, imagen corporal y perfeccionismo en estudiantes universitarias mujeres Eating behaviors and attitudes, body image and perfectionism in female college students

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    Guido Salvador Cruz

    2011-12-01

    Full Text Available Objetivo: comparar estudiantes universitarias mujeres con y sin riesgo de trastorno alimentario, en función de características asociadas a dichas patologías. Muestra: 83 mujeres de 19 a 31 años, estudiantes de una universidad pública de la Ciudad Autónoma de Buenos Aires. Procedimiento: las participantes completaron un Cuestionario de datos, Contour Drawing Rating Scale (Thompson & Gray, 1995, Eating Disorder Inventory-2 (Garner, 1991; adaptación Rutsztein et al., 2006 y la Almost Perfect Scale Revised (Slaney, Rice, Mobley, Trippi & Ashby, 2001; adaptación Arana, Keegan & Rutsztein, 2009. Resultados: las mujeres con riesgo de trastorno alimentario presentan mayor porcentaje de insatisfacción con la imagen corporal y vómitos autoinducidos, además de puntajes superiores en la mayoría de las subescalas del EDI-2 y en la subescala Discrepancia de la APS-R. Conclusiones: las mujeres con riesgo de trastorno alimentario presentan un mayor nivel de perfeccionismo desadaptativo. Estos hallazgos son relevantes para el desarrollo de tratamientos para sintomatología específica de trastorno alimentario.Objective: to compare female university students with and without risk of eating disorders, based on characteristics associated with these disorders. Sample: 83 women aged 19 to 31 years old, students from a public university in the City of Buenos Aires. Procedure: Participants completed a Data questionnaire, Contour Drawing Rating Scale (Thompson & Gray, 1995, Eating Disorder Inventory-2 (Garner, 1991; adaptation Rutsztein et al., 2006 and the Almost Perfect Scale-Revised (Slaney, Rice, Mobley, Trippi & Ashby, 2001; adaptation Arana, Keegan & Rutsztein, 2009. Results: Women presenting risk of eating disorders have a higher percentage of body image dissatisfaction and self-induced vomiting, as well as higher scores in most of the subscales of the EDI-2 and the Discrepancy subscale of the APS-R. Conclusions: Women presenting risk of eating

  18. Epigeic soil arthropod abundance under different agricultural land uses

    Energy Technology Data Exchange (ETDEWEB)

    Perez-Bote, J. L.; Romero, A. J.

    2012-11-01

    The study of soil arthropods can provide valuable information how ecosystems respond to different management practices. The objective was to assess the total abundance, richness, and composition of epiedaphic arthropods in different agrosystems from southwestern Spain. Six sites with different agricultural uses were selected: olive grove, vineyards, olive grove with vineyards, wheat fields, fallows (150-300 m long), and abandoned vineyards. Crops were managed in extensive. Field margins were used as reference habitats. At the seven sites a total of 30 pitfall traps were arranged in a 10 × 3 grid. Traps were arranged to short (SD, 1 m), medium (MD, 6 m) and large (LD, 11 m) distance to the field margins in the middle of selected plots. Pitfall traps captured a total of 11,992 edaphic arthropods belonging to 11 different taxa. Soil fauna was numerically dominated by Formicidae (26.60%), Coleoptera (19.77%), and Aranae (16.76%). The higher number of soil arthropods were captured in the field margins followed by the abandoned vineyard. Significant differences were found between sites for total abundance, and zones. However, no significant differences for total abundance were found between months (April-July). Richness and diversity was highest in field margins and abandoned vineyards. Significant differences were found for these variables between sites. Our results suggest that agricultural intensification affects soil arthropods in Tierra de Barros area, a taxonomic group with an important role in the functioning of agricultural ecosystems. (Author) 32 refs.

  19. Adverse effects on flora and fauna from the use of organochlorine pesticides on the African continent: The Nigerian case

    International Nuclear Information System (INIS)

    Umeh, E.D.N.; Egwuatu, R.I.; Nwakeze, E.N.; Amulu, P.E.

    1997-01-01

    Lindane was found to reduce stem borer damage significantly in both rice and maize plots in most years. However, a significant difference in yield was recorded only for maize in 1993 and 1995. There was a slight but steady decrease in the yield of maize over the years in the lindane treated plots although yields in these plots remained higher than in the control plots. Significant differences in the mean dry weight of retrieved leaf discs were recorded in the maize plots in 1994 and 1995. Neither insects nor spiders, were caught from plants in the treatment plots 1 day after lindane application, although almost equal numbers of insects and spiders were recovered from D-vac groun samples of treatment and control plots on the same day. Data from pitfall traps showed that lindane significantly affected the population of Aranae, Formicidae, Collembola and Acarina for up to 6 weeks after application. Its effect on Carabidae was inconsistent. (author). 11 refs, 2 figs, 7 tabs

  20. Characteristics of the first recorded spider (Arthropoda: Arachnida fauna from Sheringal, Khyber Pakhtunkhwa, Pakistan

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    Farzana Khan Perveen

    2015-12-01

    Full Text Available The spiders (order: Aranae are an important environmental indicator and play a significant role as predators in biological control of the most of the key insect pests. The present study was conducted to establish the characteristics of the first recorded spider fauna from Sheringal, Dir Upper (DU, Khyber Pakhtunkhwa (KP, Pakistan during June 2013-July 2014. Their 10 species belong to 7 families, and 10 genera (nt=123: total; ni=77: identified; nui=46: unidentified were recorded in the 6 quadrates, i.e., Daramdala, Doki, Guryaal, Samang, Shahoor and Sia-Sheringal of Sheringal. The largest family was Lycosidae (wolf spiders with respect to size and numbers of specimens collected (n=20, which contained Arctosa littorali Simon, 1897; Hippasa partita Takidar, 1970; Pardosa distincta Backwall, 1867, while the smallest family was Gnphosidae (ground spiders (n=3 with Gnaphosa eucalyptus Ghafoor and Beg, 2002; while other families Sparassidae (huntsman spiders (n=19 Halconia insignis Thorell, 1836, and Isopeda tuhogniga Barrion and Litsinger, 1995, Opilionidae (harvestmen spiders (n=12 Hadrobunus grandis Sundevall, 1833; Pholcidae (cellar spider (n=10 have Crossopriza lyoni Blackwall, 1867; Hersiliidae (two-tailed spiders (n=6 is having Harsilia savignyi Lucas, 1836; (n=5 with Araneus diadematus Clerck, 1757 were recorded. It was concluded that 50% of the spiders collected from the study area were venomous. A detail study is required for further exploration of spider fauna of Sheringal, KP, Pakistan with special reference to their taxonomical, physiological and ecological characteristics.

  1. Soil organisms in organic and conventional cropping systems Organismos do solo em sistemas de cultivo orgânico e convencional

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    Wagner Bettiol

    2002-09-01

    Full Text Available Despite the recent interest in organic agriculture, little research has been carried out in this area. Thus, the objective of this study was to compare, in a dystrophic Ultisol, the effects of organic and conventional agricultures on soil organism populations, for the tomato (Lycopersicum esculentum and corn (Zea mays crops. In general, it was found that fungus, bacterium and actinomycet populations counted by the number of colonies in the media, were similar for the two cropping systems. CO2 evolution during the cropping season was higher, up to the double for the organic agriculture system as compared to the conventional. The number of earthworms was about ten times higher in the organic system. There was no difference in the decomposition rate of organic matter of the two systems. In general, the number of microartropods was always higher in the organic plots in relation to the conventional ones, reflectining on the Shannon index diversity. The higher insect population belonged to the Collembola order, and in the case of mites, to the superfamily Oribatuloidea. Individuals of the groups Aranae, Chilopoda, Dyplopoda, Pauropoda, Protura and Symphyla were occasionally collected in similar number in both cropping systems.Apesar do crescente interesse pela agricultura orgânica, são poucas as informações de pesquisa disponíveis sobre o assunto. Assim, num Argissolo Vermelho-Amarelo distrófico foram comparados os efeitos de sistemas de cultivo orgânico e convencional, para as culturas do tomate (Lycopersicum esculentum e do milho (Zea mays, sobre a comunidade de organismos do solo e suas atividades. As populações de fungos, bactérias e actinomicetos, determinadas pela contagem de colônias em meio de cultura, foram semelhantes para os dois sistemas de produção. A atividade microbiana, avaliada pela evolução de CO2, manteve-se superior no sistema orgânico, sendo que em determinadas avaliações foi o dobro da evolução verificada no

  2. Effect of tomato consumption on high-density lipoprotein cholesterol level: a randomized, single-blinded, controlled clinical trial

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    Cuevas-Ramos D

    2013-07-01

    Full Text Available Daniel Cuevas-Ramos,1 Paloma Almeda-Valdés,1 Emma Chávez-Manzanera,1 Clara Elena Meza-Arana,2 Griselda Brito-Córdova,1 Roopa Mehta,1 Oscar Pérez-Méndez,3 Francisco J Gómez-Pérez1 1Department of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico; 2Department of Internal Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico; 3Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico Introduction: Epidemiologic evidence suggests that tomato-based products could reduce the risk of cardiovascular diseases. One of the main cardiovascular risk factors is low levels of high-density lipoprotein cholesterol (HDL-C. This study aimed to prospectively evaluate the effect of tomato consumption on HDL-C levels. Subject and methods: We conducted a randomized, single-blinded, controlled clinical trial. We screened 432 subjects with a complete lipid profile. Those individuals with low HDL-C (men 40 mg/dL. A linear regression model that adjusted for those parameters that impact HDL-C levels (age, gender, waist-to-hip ratio, body mass index, fasting triglyceride concentration, simple sugars, alcohol, physical activity, and omega-3 consumption showed an independent association between tomato consumption and the increase in HDL-C (r2 = 0.69; P > 0.0001. Conclusion: Raw tomato consumption produced a favorable effect on HDL-C levels in overweight women. Keywords: lycopene, hypoalphalipoproteinemia, dyslipidemia, overweight, cardiovascular diseases

  3. Seasonal abundance of soil arthropods in relation to meteorological and edaphic factors in the agroecosystems of Faisalabad, Punjab, Pakistan

    Science.gov (United States)

    Shakir, Muhammad Mussadiq; Ahmed, Sohail

    2015-05-01

    Soil arthropods are an important component of agroecosystems, contributing significantly to their biodiversity and functioning. However, seasonal patterns, population dynamics, and significant roles of these soil arthropods in improvement of soil structures and functions are influenced by many factors. The objective of the current study was to investigate soil arthropod abundance in relation to a blend of meteorological and edaphic factors and to find out the difference in abundance among various crops (sugarcane, cotton, wheat, alfalfa fodder, and citrus orchards). The arthropod sampling was done by pitfall traps and Tullgren extractions on fortnightly intervals. Soil temperature and relative humidity were noted on the field sites while analysis for soil pH, organic matter, and soil moisture contents were done in the laboratory. The rainfall data was obtained from an observatory. Results showed that significant differences were found in soil arthropod abundance across different sampling months and crops. Out of total 13,673 soil arthropods sampled, 38 % belonged to Collembola, followed by 15 % Hymenoptera, 15 % Acarina, 11 % Myriapods, 6 % Coleoptera, 5 % Orthoptera, and 5 % Araneae. Mean abundance per sample was highest in summer months as compared to winter. Overall abundance per sample was significantly different between all crops ( p Aranae, Coleoptera), least abundant (Dermaptera, Hemiptera, Diptera), and rare (Blattaria, Isoptera, Diplura, Lepidoptera). Soil temperature and soil organic matter showed significant positive correlation with abundance, while relative humidity was significantly negatively correlated. Soil moisture and soil pH showed no significant correlations while no correlation was found with total rainfall. PCA analysis revealed that soil surface arthropods were the major contributors of variation in overall abundance in extreme temperature months while microarthropods in low-temperature months. CCA analysis revealed the occurrence of

  4. Edaphic fauna in a vegetation gradient in the Sete Cidades National Park.

    Science.gov (United States)

    Nunes, L A P L; Araújo, A S F; Pessoa, M M C; Sousa, R S; Silva, J D C; Matos-Filho, C H A

    2018-04-09

    The vegetation physionomy and cover can show patterns of diversity and composition of the edaphic community, depending on the quantity and quality of litter in a specific habitat. The objective of this study was to evaluate the effect of the vegetation gradient formed by Graminoid Field (GRF), Cerrado Sensu Stricto (CSS), Cerradão (CRD) and Semideciduous Seasonal Forest (SSF) on density, diversity and composition of the edaphic fauna community in two seasons of the year, in the Sete Cidades National Park (Piauí state). For fauna sampling, a total of eight pitfall traps, distanced 10 m, were placed in each area in the central part of each system, where they remained for seven days. In the wet period, there was a tendency to increase the number of individuals as a function of the complexity of the vegetation formation, with the inverse occurring in the dry period. It was verified an environmental variation of the climatic factors temperature and humidity according to the vegetal formation, contributing to a heterogeneous distribution of the fauna. The GRF formation presented a significantly lower value of average richness only in the dry period. Regarding the variables of diversity and uniformity, they did not show drastic variations in relation to the vegetation gradient studied. The dominant groups in the vegetation gradient were Formicidae, Coleoptera, Aranae, Acari and Collembola, with reduction of the number of Coleoptera in the dry season. Principal component analysis (PCA) revealed greater differences in the composition of the communities between the vegetation formations for the rainy season. At this time, the formations SSF and CRD were associated to a greater diversity of invertebrates than CSS and GRF, demonstrating the influence of the vegetation complexity on the soil fauna community.

  5. Edaphic fauna in a vegetation gradient in the Sete Cidades National Park

    Directory of Open Access Journals (Sweden)

    L. A. P. L. Nunes

    2018-04-01

    Full Text Available Abstract The vegetation physionomy and cover can show patterns of diversity and composition of the edaphic community, depending on the quantity and quality of litter in a specific habitat. The objective of this study was to evaluate the effect of the vegetation gradient formed by Graminoid Field (GRF, Cerrado Sensu Stricto (CSS, Cerradão (CRD and Semideciduous Seasonal Forest (SSF on density, diversity and composition of the edaphic fauna community in two seasons of the year, in the Sete Cidades National Park (Piauí state. For fauna sampling, a total of eight pitfall traps, distanced 10 m, were placed in each area in the central part of each system, where they remained for seven days. In the wet period, there was a tendency to increase the number of individuals as a function of the complexity of the vegetation formation, with the inverse occurring in the dry period. It was verified an environmental variation of the climatic factors temperature and humidity according to the vegetal formation, contributing to a heterogeneous distribution of the fauna. The GRF formation presented a significantly lower value of average richness only in the dry period. Regarding the variables of diversity and uniformity, they did not show drastic variations in relation to the vegetation gradient studied. The dominant groups in the vegetation gradient were Formicidae, Coleoptera, Aranae, Acari and Collembola, with reduction of the number of Coleoptera in the dry season. Principal component analysis (PCA revealed greater differences in the composition of the communities between the vegetation formations for the rainy season. At this time, the formations SSF and CRD were associated to a greater diversity of invertebrates than CSS and GRF, demonstrating the influence of the vegetation complexity on the soil fauna community.

  6. Seasonal abundance of soil arthropods in relation to meteorological and edaphic factors in the agroecosystems of Faisalabad, Punjab, Pakistan.

    Science.gov (United States)

    Shakir, Muhammad Mussadiq; Ahmed, Sohail

    2015-05-01

    Soil arthropods are an important component of agroecosystems, contributing significantly to their biodiversity and functioning. However, seasonal patterns, population dynamics, and significant roles of these soil arthropods in improvement of soil structures and functions are influenced by many factors. The objective of the current study was to investigate soil arthropod abundance in relation to a blend of meteorological and edaphic factors and to find out the difference in abundance among various crops (sugarcane, cotton, wheat, alfalfa fodder, and citrus orchards). The arthropod sampling was done by pitfall traps and Tullgren extractions on fortnightly intervals. Soil temperature and relative humidity were noted on the field sites while analysis for soil pH, organic matter, and soil moisture contents were done in the laboratory. The rainfall data was obtained from an observatory. Results showed that significant differences were found in soil arthropod abundance across different sampling months and crops. Out of total 13,673 soil arthropods sampled, 38 % belonged to Collembola, followed by 15 % Hymenoptera, 15 % Acarina, 11 % Myriapods, 6 % Coleoptera, 5 % Orthoptera, and 5 % Araneae. Mean abundance per sample was highest in summer months as compared to winter. Overall abundance per sample was significantly different between all crops (p arthropods according to abundance, i.e., highly abundant (Collembola, Acarina, Myripoda, Hymenoptera), moderately abundant (Orthoptera, Aranae, Coleoptera), least abundant (Dermaptera, Hemiptera, Diptera), and rare (Blattaria, Isoptera, Diplura, Lepidoptera). Soil temperature and soil organic matter showed significant positive correlation with abundance, while relative humidity was significantly negatively correlated. Soil moisture and soil pH showed no significant correlations while no correlation was found with total rainfall. PCA analysis revealed that soil surface arthropods were the major contributors of variation in overall

  7. Colémbolos (Hexapoda como bioindicadores de la calidad de suelos contaminados con hidrocarburos en el sureste de México Collembola (Hexapoda as quality bioindicators of the hydrocarburans polluted soils in Southestern Mexico

    Directory of Open Access Journals (Sweden)

    Raúl Uribe-Hernández

    2010-04-01

    , equitativity (J' and the similarity index (S. We also performed the following soil analyses: total petroleum hydrocarbon content (HTP, polycyclic aromatic hydrocarbon content (HAP, porosity, pH, CE, MO, N, P, K, CIC, and texture. In contaminated areas, HTP exceeded the safe limits sets by Mexican environmental legislation. In all studied areas we observed Collembola, mites, and dipteran larvae. The variation in abundance and diversity of these insects can be used as biondicators of the level of contamination and quality of the soil. We found very low abundances of Crustacea, Formicidae, Aranae, Diptera, Pseudoscopionida, and Diplopoda. The Collembola families that were most widely distributed were Sminthurididae and Isotomidae. Our correlation analysis showed that their diversity is affected by HAP level (fluoranthene, naphfhalene, pyrene, chrysene and phenanthrene.

  8.  “Spiders and Webs in American Literature”

    Directory of Open Access Journals (Sweden)

    Vincent Dussol

    2012-05-01

    Full Text Available From Jonathan Edwards to Jorie Graham, spiders are strikingly present in American literature. The purpose of this article is first to show how that theme may have become something of a national tradition as very different writers, all of them careful observers of aranae, answered one another through the years. It is very likely that the attention paid to spiders by American authors was increased by those Native American myths in which spiders are a central figure. More than occasionally, on the female side of the American counter-culture, especially among its feminist and lesbian exponents, simple activists and creative writers have harnessed the symbolic power invested in the spider by Native Americans.There may be deeper reasons accounting for American authors’ fascination with spiders. The country’s phobia of disunion is one; a nation of settlers’ acute consciousness of the precariousness of its occupation of the territory is another. In demonstrating outstanding skills for adjustment to unknown places, spiders epitomize a form of identity permanence. The predominantly positive character of spider symbols in American literature will occasionally be inverted. Following the national logic of checks and balances, any web covering the whole of the United States will tend to come under suspicion.This study ends with an inventory of cultural productions linked with spiders and webs and whose Americanness is yet to be clearly determined.De Jonathan Edwards à Jorie Graham, l’araignée apparaît dans un nombre frappant de textes littéraires américains. On a d’abord voulu tenter de montrer comment a pu se construire cette tradition thématique et faire la preuve que différents écrivains, réunis par un souci de l’observation, se sont répondus à travers elle. L’attention prêtée à l’araignée s’est certainement trouvée renforcée par les récits mythologiques des peuples premiers américains qui font de l’araignée une

  9. MEMORIAS III Encuentro Científico de Estudiantes de Biología

    Directory of Open Access Journals (Sweden)

    Biológica Colombiana Acta

    2003-07-01

    de regeneración en un bosque intervenido de la Amazonía Colombiana / Estudio preliminar de la comunidad macrobentónica del mesolitoral rocoso de bahía Concha (Parque Nacional Natural Tayrona,Magdalena, Colombia / Caracterización florística de un bosque pluvial tropical en el corregimiento de Pacurita, Quibdó, Chocó (Colombia / Revisión preliminar de la familia procyonidaeen Colombia / Evaluación y dinámica de uso del recurso hídrico en el corregimiento de Barú (Cartagena, Bolívar, Colombia / Viabilidad de la liberación de ardillas cola roja sciurus granatensisen el arboretum Francisco Bayón - Universidad Nacional de Colombia / Los rastros del megaterio comparación anatómica entre eremotherium rusconiiy bradypus variegatus / Comportamiento reproductivo de chiroxiphia lanceolata(pipridae:aves en un bosque intervenido del Tolima, Colombia / índice de agresividad en apis mellifera(hymenoptera: aapidae / Inserción de proteínas en membrana: algunas características del proceso / Comportamiento de félidos en cautiverio en el Zoológico de Santa Cruz, Colombia / Efecto de la forma tridimensional y el fenómeno de iluminación mutua en la percepción del color en el hombre / Tasa de hidratación de Physalaemus pustulosusR / Algunas serpientes venenosas presentes en la cuenca hidrográfica del Río Cabí, Chocó, Colombia / Embriogénesis somática y regeneración de plantas enepidendrum ruizianum (Orchidaceae / Germinación y crecimiento de una planta foránea, satureja sp.(labiaceae sobre tres sustratos orgánicos bajo condiciones controladas en la Sabana de Bogotá, Colombia / Caracterización de la comunidad de arañas (arachnida: aranae presente en bosque alto andino y en frailejonal del Parque Nacional Natural Chingaza, Colombia / Transporte de biomasa por una colonia de atta laevigatasmith 1958 (hymenoptera: formicidae en los Llanos Orientales (Puerto López, Meta, Colombia / Manejo ex situde crías de crocodylus intermedius(crocodylidae, una