09 Sep '11, 3am

Comparative biology of cave-dwelling spitting spiders (Araneae: Scytodidae): parental care…

Caves are among the most fascinating environments on Earth. Specialised cave biota provides evidence of evolutionary adaptations for living under severe conditions. However, little attention has been paid to the behaviour of cave spiders. In this study, we compared life history, including maternal care, cooperative prey-capture, tolerance among siblings, and reproductive behaviour, of fi ve cave spitting spiders (Scytodidae). Scytodes magna and Guangxi Scyloxes sp. 1 occur exclusively in the aphotic zone, whereas Scytodes fusca , S. cavernarum and the Philippines Scytodes sp. 2 are usually found relatively close to cave entrances, known as the light zone. Like in other typical spitting spiders, females of S. fusca , S. cavernarum and the Philippines Scytodes sp. 2 carry their egg-sacs with their chelicerae. However, here we document for the first time that S. magna and Gua...

Full article: http://rafflesmuseum.wordpress.com/2011/09/09/comparative...

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