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Asymmetry in genitalia is in sync with lateralized mating behavior but not with the lateralization of other behaviors

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Current Zoology 2020年第1期66卷 71-81页

作者： Julian TORRES-DOWDALL Sina J.ROMETSCH Gaston AGUILERA Guillermo GOYENOLA Axel MEYER Department of Biology University of KonstanzKonstanzGermany Zukunftskolleg University of KonstanzKonstanzGermany Hector Fellow Academy KarlsruheGermany Unidad Ejecutora Lillo(CONICET) Fundacion Miguel LilloTucumanArgentina Departamento de Ecologia y Gestion Ambiental Centro Universitario Regional Del EsteUniversidad de la RepublicaUruguay

Asymmetries in bilateral organisms attract a lot of curiosity given that they are conspicuous departures from the *** allow the investigation of the integration at different levels of biological *** we study whether and how behavioral and asymmetrical anatomical traits coevolved and work *** ask if asymmetry is determined locally for each trait or at a whole individual level in a species bearing conspicuous asymmetrical *** genitalia evolved in many species;however,in most cases the direction of asymmetry is ***,it has been rarely determined if there is an association between the direction of asymmetry in genitalia and other *** onesided livebearer fish of the genus Jenynsia(Cyprinodontiformes,Anablepidae),the anal fin of males is modified into a gonopodium,an intromittent organ that serves to inseminate *** gonopodium shows a conspicuous asymmetry,with its tip bending either to the left or the *** surveying 13 natural populations of Jenynsia lineata,we found that both genital morphs are equally common in wild *** a series of experiments in a laboratory population,we discovered asymmetry and lateralization for multiple other traits;yet,the degree of integration varied highly among *** in exploratory behavior in response to different stimuli was not associated with genital ***,the direction of genital asymmetry was positively correlated with sidedness of mating preference and the number of neuromasts in the lateral *** suggests integration of functionally linked asymmetric traits;however,there is no evidence that asymmetry is determined at the whole individual level in our study species.

关键词： antisymmetry behavioral lateralization Jenynsia iineata Jenynsia multidentata phenotypic integration

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