Feminization and masculinization of western mosquitofish (Gambusia affinis) observed in rivers impacted by municipal wastewaters
نویسندگان
چکیده
منابع مشابه
Trophic plasticity and fine-grained resource variation in populations of western mosquitofish, Gambusia affinis
Hypothesis: Fish will exhibit morphological plasticity in response to how (food type: live vs. attached food) and where (orientation: surface, mid-water, benthic) they are fed. Fine-grained resource variation (daily rotation of orientations) will produce intermediate morphologies. Population differences will reflect responses to both predators and resources. Organism: Offspring from two populat...
متن کاملViability Costs of Reproduction and Behavioral Compensation in Western Mosquitofish (Gambusia affinis)
The cost of reproduction hypothesis suggests that current reproduction has inherent tradeoffs with future reproduction. These tradeoffs can be both in the form of energy allocated to current offspring as opposed to somatic maintenance and future reproduction (allocation costs), or as an increase in mortality as a result of morphological or physiological changes related to reproduction (viabilit...
متن کاملUse of microsatellite paternity analysis to determine male mating success in the western mosquitofish, Gambusia affinis
I tested the effects of male body size on male mating behavior and reproductive success in the western mosquitofish, Gambusia affinis. In two separate behavioral experiments (male–male competition and no-competition), I tested the predictions that (1) larger males out-compete smaller males for mates and (2) small males increase their number of mating attempts in the absence of a larger competit...
متن کاملAcute toxicity of mosquitocidal compounds to young mosquitofish, Gambusia affinis.
Toxicity of Florida mosquito larvicides and adulticides to 3-5 day old Gambusia affinis was determined in the laboratory. After 24-h exposure, the larvicides, temephos, fenoxycarb and petroleum distillates had LC50 values of 5.60, 1.05 and 593.4 ppm, respectively. After 24 h the adulticides resmethrin, fenthion, naled and malathion had LC50 values of 0.007, 2.94, 3.50 and 12.68 ppm, respectivel...
متن کاملHelminths of the Western Mosquitofish (Gambusia affinis) in Bayou Traverse, Louisiana, U.S.A
Helminth parasites of mosquitofish (Gambusia affinis) were surveyed in Bayou Traverse, a waterway in the LaBranche wetlands of southeastern Louisiana, U.S.A. In total, 1,255 parasites belonging to 8 species were collected and identified, including Ascocotyle ampullacea, Ascocotyle mcintoshi, Ascocotyle tenuicollis, Phagicola diminuta, Phagicola sp., Echinochasmus swartzi, Posthodiplostomum mini...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2016
ISSN: 2045-2322
DOI: 10.1038/srep20884