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      Biología y ecología de la araña plateada Argiope argentata (Fabricius, 1775) (araneidae) en un sector xerófilo del noreste de la Península de Araya, Venezuela Translated title: Biology and ecology of silver spider Argiope argentata (Fabricius, 1775) (araneidae) xeric sector in northeast Peninsula Araya, Venezuela

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          Abstract

          A pesar del importante rol que cumplen las arañas en los ecosistemas como depredadoras de invertebrados han sido poco estudiadas en el país. Con la finalidad de dar a conocer algunos aspectos de la biología y el rol ecológico para los ecosistemas del nororiente venezolano, se estudiaron dos poblaciones de Argiope argentata (en manglar y bosque xerofítico) en las adyacencias de Guayacán. Se empleó la captura directa mediante la recolecta manual como único método de muestreo y se realizaron observaciones exhaustivas de los organismos en el campo. En las telarañas se buscó: machos y hembras, presas envueltas y estabilimento; también se determinó la altura de la tela sobre el suelo y el sustrato utilizado para fijarla. En el hábitat xerófilo se observaron 25 arañas, mientras que en el de manglar fueron 75, la mayoría hembras (60) y sólo ocho machos. Las telarañas (n = 86), se hallaron principalmente en plantas de Avicennia sp. y Prosopis sp. Las que fueron construidas en la parte media y baja de la vegetación (40-80 cm) fueron las más exitosas en la captura de presas (todas insectos, principalmente dípteros) y presentan un estabilimento cruzado. Estos resultados preliminares contribuyen, sin duda alguna, al conocimiento de la historia natural de las poblaciones de Argiope de la Península de Araya.

          Translated abstract

          Despite the important role they play in ecosystems spiders as predators of invertebrates in the country, they have been little studied. In order to present some aspects of the biology and ecological role in ecosystems of northeastern Venezuela, two populations of Argiope argentata were studied (in mangrove and dry forest) in the vicinity of Guayacán. Direct capture was used by manually collected as unique method of sampling and extensive observations of the bodies were performed in the field. In the cobwebs we sought: male and female, wrapped preys and web decoration; the height of the cloth on the ground and used to secure the substrate was determined. Xerófilo habitat in 25 spiders were observed, while in the mangrove were 75, most females (60) and only eight males. Cobwebs (n = 86), they are mainly found in plants of Avicennia sp. and Prosopis sp. Which they were built in the middle and lower vegetation (40-80 cm) were the most successful in capturing prey (all insects, mainly Diptera) and have a cross web decoration. These preliminary results contribute, no doubt, to the knowledge of the natural history of populations Argiope Araya peninsula.

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          Most cited references42

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          Ecology of the True Spiders (Araneomorphae)

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            Systematics and Evolution of Spiders (Araneae)

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              Prey selection of spiders in the field

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                Author and article information

                Journal
                saber
                Saber
                Saber
                Universidad de Oriente (Cumaná, Sucre, Venezuela )
                1315-0162
                2343-6468
                September 2016
                : 28
                : 3
                : 471-479
                Affiliations
                [01] Cumaná orgnameUniversidad de Oriente orgdiv1Escuela de Ciencias orgdiv2Departamento de Biología Venezuela
                Article
                S1315-01622016000300004 S1315-0162(16)02800304
                7591b66a-e69c-4292-87c4-557418fc1456

                http://creativecommons.org/licenses/by/4.0/

                History
                : November 2014
                : June 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 45, Pages: 9
                Product

                SciELO Venezuela

                Categories
                Agrobiología

                Sucre state,ethology,xerofitic forest,mangrove,Araneae,estado Sucre,etología,bosque xerofítico,manglar

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