Male courtship signal modality and female mate preference in the wolf spider Schizocosa ocreata: results of digital multimodal playback studies  

作　　者：Elizabeth C.KOZAK George W.UETZ 

机构地区：[1]Department of Biological Sciences,University of Cincinnati,Cincinnati,OH,P.0.Box 260006,USA,45221-0006

出　　处：《Current Zoology》2019年第6期705-711,共7页动物学报（英文版）

基　　金：This work represents a portion of a thesis submitted by E.C.K.in partial fulfillment of the requirements for the M.S.degree from the Department of Biological Sciences at the University of Cincinnati.This research was supported by grant IOS-1026995 from the National Science Foundation(to G.W.U.)。

摘　　要：Females must be able to perceive and assess male signals,especially when they occur simultaneously with those of other males.Previous studies show female Schizocosa ocreata wolf spiders display receptivity to isolated visual or vibratory courtship signals,but increased receptivity to multimodal courtship.It is unknown whether this is true when females are presented with a choice between simultaneous multimodal and isolated unimodal male courtship.We used digital playback to present females with a choice simulating simultaneous male courtship in different sensory modes without variation in information content:1)isolated unimodal visual versus vibratory signals;2)multimodal versus vibratory signals;and 3)multimodal versus visual signals.When choosing between isolated unimodal signals(visual or vibratory),there were no significant differences in orientation latency and number of orientations,approaches or receptive displays directed to either signal.When given a choice between multimodal versus vibratory-only male courtship signals,females were more likely to orient to the multimodal stimulus,and directed significantly more orients,approaches and receptivity behaviors to the multimodal signal.When presented with a choice between multimodal and visual-only signals,there were significantly more orients and approaches to the multimodal signal,but no significant difference in female receptivity.Results suggest that signal modes are redundant and equivalent in terms of qualitative responses,but when combined,multimodal signals quantitatively enhance detection and/or reception.This study confirms the value of testing preference behavior using a choice paradigm,as female preferences may depend on the context(e.g.,environmental context and social context)in which they are presented with male signals.

关 键 词：mate choice multimodal communication Schizocosa SIGNALING wolf spider 

分 类 号：O35[理学—流体力学]