Female dragline-mediated species recognition between the wolf spiders Pardosa astrigera and Pardosa pseudoannulata
ZENG Yang;LIANG Honghe;JIANG Qingsheng;CHEN Jian;LIU Fengxiang;JIAO Xiaoguo;Center for Behavioral Ecology & Evolution,Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources,School of Life Sciences,Hubei University;Subtropical Crops Research Institute of Guangxi Zhuang Autonomous Region;Jingzhou Academy of Agricultural Sciences;
Chemical signals play important roles on species recognition,mate recognition and mateassessment. Current research in Lycosidae most focuses on the dragline- mediated chemical cues in materecognition and mate assessment.Depending on the dragline-mediated chemical cues,male wolf spiders are ableto discriminate sex,developmental period and female mating status. In the present study,in order to investigatewhether male wolf spiders could discriminate conspecific females through female dragline-mediated chemicalcues,we compared male courtship behaviour when males were exposed to the draglines from conspecific andheterospecific females between the two closely related species(Pardosa astrigera and P. pseudoannulata). Ourresults indicated that male courtship latency was significantly delayed and courtship intensity substantiallydecreased when the male wolf spiders were exposed to the draglines of heterospecifics females compared withthose of conspecifics females. Male wolf spiders of P. astrigera and P. pseudoannulata are capable of chemicallydiscriminating between conspecifics and heterospecifics females.