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Notas sobre o comportamento da aranha cleptoparasita Argyrodes elevatus (Theridiidae, Araneae) / Notes on the behavior of the kleptoparasitic spider Argyrodes Elevatus (Yheridiidae, Araneae)
Silveira, Marco Cesar; Japyassú, Hilton F.
  • Silveira, Marco Cesar; Butantan Institute. Arthropods Laboratory. BR
  • Japyassú, Hilton F; Federal University of Bahia. Program of Post-Graduation in Animal Diversity. BR
Rev. etol. (Online) ; 11(1): 56-67, 2012. ilus
Article in English | LILACS | ID: lil-701998
ABSTRACT
Kleptoparasitism is an interaction in which one individual steals captured or processed food from another; spiders of the subfamily Argyrodinae (Theridiidae) may present kleptoparasitic behavior. Aiming to increase the knowledge about this unique strategy, we describe activities accomplished by the kleptoparasitic spider Argyrodes elevatus (Theridiidae) in webs of captive host spiders. After a prey was captured by the host spider, a second prey was offered, so that the kleptoparasite could steal the first prey while the host spider was immobilizing the second one. Using this method, we were able to see a wide range of events, such as the theft of stored preys, the sharing of a prey with the host, the theft of the egg sacs, the predation of host spiders, and others. Finally, we discuss how kleptoparasitism could vary in function of host behavior and how the high behavioral variability of Argyrodes elevatus could be explained.
RESUMO
O Cleptoparasitismo é um tipo de interação na qual um indivíduo rouba ou furta alimento adquirido por outro; aranhas da subfamília Argyrodinae (Theridiidae) podem apresentar esta estratégia. A fim de ampliar o conhecimento acerca deste curioso comportamento, descrevemos aqui as atividades empenhadas pela aranha cleptoparasita Argyrodes elevatus (Theridiidae) em teias de aranhas hospedeiras, em laboratório. Após a captura de presa por parte da aranha hospedeira, uma segunda presa era oferecida, de maneira que o cleptoparasita pudesse furtar a primeira enquanto a hospedeira capturava a segunda. Através deste método, observamos uma grande variedade de eventos, tais quais furto e compartilhamento de presas capturadas, furto de ooteca e predação da aranha hospedeira, entre outros. Por fim, discutimos a flexibilidade do cleptoparasitismo em função do comportamento da aranha hospedeira e como pode ser explicada a alta variabilidade comportamental de Argyrodes elevatus.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Spiders / Feeding Behavior / Host-Parasite Interactions Limits: Animals Language: English Journal: Rev. etol. (Online) Journal subject: Biology / Psychology / ZOOLOGIA Year: 2012 Type: Article Affiliation country: Brazil Institution/Affiliation country: Butantan Institute/BR / Federal University of Bahia/BR

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Full text: Available Index: LILACS (Americas) Main subject: Spiders / Feeding Behavior / Host-Parasite Interactions Limits: Animals Language: English Journal: Rev. etol. (Online) Journal subject: Biology / Psychology / ZOOLOGIA Year: 2012 Type: Article Affiliation country: Brazil Institution/Affiliation country: Butantan Institute/BR / Federal University of Bahia/BR