Use of microsatellite paternity analysis to determine male mating success in the western mosquitofish, Gambusia affinis

Factors influencing male mating behaviour inGambusia affinis (Baird & Girard) with a coercive mating system

The effects of male and female body size, and correlated characteristics, on male mating behaviour were investigated in the western mosquitofish Gambusia affinis. Because larger females typically have larger broods in Gambusia sp., it was predicted that males would attempt more copulations with larger females. Two-way ANOVA showed that female body size was a significant predictor of male mating...

Effects of Size and Exposure to Predation Threat on Mating Behavior and Predation Response in Male Western Mosquitofish (gambusia Affinis)

Effects of a parasitic nematode on male mate choice in a livebearing fish with a coercive mating system (western mosquitofish, Gambusia affinis).

I examined the effects of the parasitic larval nematode, Eustrongylides ignotus, on male mate choice in the western mosquitofish, Gambusia affinis. I hypothesized that parasite presence influences male mate choice either directly (via reduction in male mating behavior due to presence of parasite in females) or indirectly (via reduction in male mating behavior due to reduced condition of infecte...

Reproductive characteristics of male mosquitofish (Gambusia affinis) inhabiting a small southeastern U.S. river receiving treated domestic sewage effluent.

A population of western mosquitofish (Gambusia affinis) living below a wastewater treatment plant in the vicinity of Birmingham (AL, USA) was studied for evidence of exposure to estrogens. Mosquitofish are sexually dimorphic live-bearing fish. Males have an elongated and modified anal fin, called a gonopodium, used in mating. It has been hypothesized that exposure to estrogens and/or anti-andro...

Female fitness declines with increasing female density but not male harassment in the western mosquitofish, Gambusia affinis

Sexual conflict occurs when individuals of one sex express traits that reduce the fitness of individuals of the other sex. In many poeciliid fish, males harass females for copulations, which is thought to reduce female fitness by lowering foraging efficiency and increasing predation risk, energetic expenditure and the likelihood of disease transmission. Mating may also be costly for males, who ...