Evaluating the potential for prezygotic isolation and hybridization between landlocked and anadromous alewife ( Alosa pseudoharengus ) following secondary contact
نویسندگان
چکیده
منابع مشابه
Human disturbance causes the formation of a hybrid swarm between two naturally sympatric fish species.
Most evidence for hybrid swarm formation stemming from anthropogenic habitat disturbance comes from the breakdown of reproductive isolation between incipient species, or introgression between allopatric species following secondary contact. Human impacts on hybridization between divergent species that naturally occur in sympatry have received considerably less attention. Theory predicts that rei...
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Alewife Alosa pseudoharengus, a small clupeid fish native to Atlantic Ocean, has recently (∼150 years ago) invaded the North American Great Lakes and despite challenges of freshwater environment its populations exploded and disrupted local food web structures. This range expansion has been accompanied by dramatic changes at all levels of organization. Growth rates, size at maturation, or fecund...
متن کاملBeta-thymosin gene polymorphism associated with freshwater invasiveness of alewife (Alosa pseudoharengus).
Predicting the success of a species' colonization into a novel environment is routinely considered to be predicated on niche-space similarity and vacancy, as well as propagule pressure. The role genomic variation plays in colonization success (and the interaction with environment) may be suggested, but has not rigorously been documented. To test an hypothesis that previously observed ecotype-sp...
متن کاملIntestinal coccidiosis of anadromous and landlocked alewives, Alosa pseudoharengus, caused by Goussia ameliae n. sp. and G. alosii n. sp. (Apicomplexa: Eimeriidae)
Anadromous alewives, Alosa pseudoharengus, have experienced significant population level declines caused by factors including habitat destruction. Alewives occur in two different life histories, anadromous and landlocked forms. The landlocked alewife evolved from ancestral anadromous populations, resulting in an exclusively freshwater and phenotypically unique form. The occurrence of parasites ...
متن کاملIndependent evolutionary origins of landlocked alewife populations and rapid parallel evolution of phenotypic traits.
Alewife, Alosa pseudoharengus, populations occur in two discrete life-history variants, an anadromous form and a landlocked (freshwater resident) form. Landlocked populations display a consistent pattern of life-history divergence from anadromous populations, including earlier age at maturity, smaller adult body size, and reduced fecundity. In Connecticut (USA), dams constructed on coastal stre...
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ژورنال
عنوان ژورنال: Evolutionary Applications
سال: 2018
ISSN: 1752-4571,1752-4571
DOI: 10.1111/eva.12645