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  • KOREAN
  • P-ISSN2287-8327
  • E-ISSN2288-1220
  • SCOPUS, KCI

ISSN : 2287-8327

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Vol.30 No.4

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Sibling Recognition and Nepotism in the Subsocial Funnel Web Spider, Coelotes terrestris (Araneae, Amaurobiidae)

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2007, v.30 no.4, pp.315-318
Shin Hyun Chul (GenDocs Inc.)
Shin, H. C. (2007). Sibling Recognition and Nepotism in the Subsocial Funnel Web Spider, Coelotes terrestris (Araneae, Amaurobiidae). Journal of Ecology and Environment, 30(4), 315-318.

Abstract

Cooperative or non-territorial permanently social spiders are believed to have evolved from speciesshowing subsocial maternal care. The transition from subsocial to cooperative social groups probably involved a transition from an outbreeding breeding system to one with inbreeding. Nepotistic recognition among siblings should facilitate the evolution of social cooperation through avoidance of inbreeding and maintenance of mutual tolerance between siblings. We conducted experiments to determine whether a mechanism for sibling recognition is present in the subsocial spider, Clotes terrestrisprovisioning. The numbers of surviving individuals within unfed groups were observed and compared between non-sibling groups of ten spiderlings and groups of ten siblings. The number of survivors differed significantly between groups, with consistently fewer spiderlings surviving in the non-sibling groups than the sibling groups over the study period. This result suggests that sibling recognition and nepotism do occur in this subsocial species. The nepotism involved in the maternal social organization of the Clotes might be an example of a preadaptation facilitating the evolution of permanent social life.

keywords
Clotes terrestris, Nepotism, Sibling recognition, Subsocial spider, Clotes terrestris, Nepotism, Sibling recognition, Subsocial spider

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(2007) Accepted November 7 Received October 27,

Journal of Ecology and Environment

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