Sexual coercion does not exclude luring behavior i

Authors: Alfredo V Peretti Rodrigo H Willemart

Publish Date: 2006/05/24

Volume: 25, Issue: 1, Pages: 29-39

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Abstract

Sexual coercion in the form of forced copulation has been used as a typical example to illustrate the conflict of interests between females and males Among arthropods forced copulation has been reported for some groups of insects and crustaceans but not for arachnids In the present work we analyse and describe the behavioral patterns of mating behavior of the climbing camelspider Oltacola chacoensis relating it to relevant morphological features In this species the male forcefully clasps the female’s genital region with his chelicerae and locks her fourth pair of legs with his pedipalps In some cases the cuticle of the female’s abdomen was damaged by this cheliceral clasping In contrast to other camelspiders the female O chacoensis never remained motionless during mating but continuously shook her body opening her chelicerae notably towards the male Despite this coercive context males performed copulatory courtship tapping with pedipalps and females showed an apparent cooperative behavior they remained still during a short period of the sperm transfer phase These results strengthen the idea that sexual coercion in the form of forced copulation and luring behavior in the form of copulatory courtship are not two mutuallyexclusive male’s strategies during a single copulationWe thank GR Smith P Carrera and A Klann for useful comments on previous versions of the manuscript We are also indebted to C Mattoni and P Carrera for help in collecting trips AVP thank Emilio Maury for his help and advice for the study of the biology of camelspiders Financial support was provided by the Consejo Nacional de Investigaciones Científicas y Técnicas of Argentina and the Secretaría de Ciencia y Técnica of the Universidad Nacional de Córdoba to AVP

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