Sex Recognition in Surfaceand Cave Dwelling Male Atlanticmollies Poecilia Mexicana
نویسنده
چکیده
ŽAnimals colonizing lightless subterranean habitats can no longer rely on visual signals to find mating partners. In the present study, we investigated the ability of males to recognize females in two surface and a cave dwelling population of a livebearing fish, Poecilia mexicana. In surface populations males discriminated between sexes with visual plus non-visual cues available and with visual stimuli only. In the cave form the ability to discriminate with solely visual stimuli is lacking. In all three populations, males did not recognize females in darkness (infrared observations), suggesting that sex recognition via far-field communication is lacking in surface and cave dwelling P.mexicana. Different preferences in large and small males to stay near a female or a male stimulus fish probably reflect differences concerning a trade-off between sexual and aggressive behaviour. SEX RECOGNITION IN SURFACEAND CAVE DWELLING MALE ATLANTICMOLLIES POECILIA MEXICANA (POECILIIDAE, TELEOSTEI)
منابع مشابه
Size-dependent male mating behaviour in the Cave molly, Poecilia mexicana (Poeciliidae, Teleostei)
We investigated male mating behaviour in a population of Poecilia mexicana from a Mexican limestone cave. A previous study has shown that unlike surface-dwelling P. mexicana, Cave molly males show surprisingly low frequencies of sexual behaviour when together with a female. In surface-living mollies, small males are typically more sexually active than large ones. By contrast, the frequency of s...
متن کاملSex-specific local life-history adaptation in surface- and cave-dwelling Atlantic mollies (Poecilia mexicana)
Cavefishes have long been used as model organisms showcasing adaptive diversification, but does adaptation to caves also facilitate the evolution of reproductive isolation from surface ancestors? We raised offspring of wild-caught surface- and cave-dwelling ecotypes of the neotropical fish Poecilia mexicana to sexual maturity in a 12-month common garden experiment. Fish were raised under one of...
متن کاملInsights into the Social Behavior of Surface and Cave-Dwelling Fish (Poecilia mexicana) in Light and Darkness through the Use of a Biomimetic Robot
Citation: Bierbach D, Lukas J, Bergmann A, Elsner K, Höhne L, Weber C, Weimar N, Arias-Rodriguez L, Mönck HJ, Nguyen H, Romanczuk P, Landgraf T and Krause J (2018) Insights into the Social Behavior of Surface and Cave-Dwelling Fish (Poecilia mexicana) in Light and Darkness through the Use of a Biomimetic Robot. Front. Robot. AI 5:3. doi: 10.3389/frobt.2018.00003 insights into the social Behavio...
متن کاملOtolith morphology and hearing abilities in cave- and surface-dwelling ecotypes of the Atlantic molly, Poecilia mexicana (Teleostei: Poeciliidae)
Cave fish have rarely been investigated with regard to their inner ear morphology, hearing abilities, and acoustic communication. Based on a previous study that revealed morphological differences in the saccular otolith between a cave and two surface populations of Poecilia mexicana, we checked for additional differences in utricular and lagenar otoliths and tested whether different populations...
متن کاملSpectral sensitivity of mollies: comparing surface- and cave-dwelling Atlantic mollies, Poecilia mexicana
The visual pigments of cones and rods in three species of mollies, Poecilia mexicana, Poecilia latipinna and their asexual hybrid Poecilia formosa, were examined using microspectrophotometry. In P. mexicana, populations from extreme photic habitats were used: one population originated from a clear water habitat, one from a milky water habitat and another from a completely dark cave. Ultraviolet...
متن کامل