Semiochemical Receptors in Steatoda Grossa

Shilpa Khandelwal¹ , V.K Sharma²

Section:Research Paper, Product Type: Journal-Paper
Vol.2 , Issue.3 , pp.13-19, May-2015

Online published on Nov 15, 2015

Copyright © Shilpa Khandelwal , V.K Sharma . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Web building spiders are known to have poorly developed eyes, and acoustic organ for communication. Thus the only mechanism possible for mate identification is chemical communication. In nature female spider build a web and male wander around until find a terrestrial pheromones through female silk. Our preliminary experiments have confirmed absence of air borne pheromones. To ensure existence of semiochemicals series of experiment were carried out on a Therididae spider Steatoda grossa between combination of mature male with mature and immature female Steatoda. Male Steatoda when introduced on web of female showed vibration and female also showed vigorous vibration in response to male vibrations. Male responded to female web as soon as he landed on web confirming existence of some kind of identification factor on web which can be semiochemicals. The semiochemicals receptor have been detected on leg of Steatoda grossa through SEM. The receptor are located on the hair arranged in rows concentrating mainly on tarsal segment both the short and long hairs act as receptor for receiving stimulus.

Key-Words / Index Term :
Steatoda , Semiochemicals , Receptor

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