Atypical hepatic vacuolated cell lesion in the white perch Morone Americana
نویسندگان
چکیده
منابع مشابه
Dynamics of white perch Morone americana population contingents in the Patuxent River estuary, Maryland, USA
Alternative migratory pathways in the life histories of fishes can be difficult to assess but may have great importance to the dynamics of spatially structured populations. We used Sr/Ca in otoliths as a tracer of time spent in freshwater and brackish habitats to study the ontogenetic movments of white perch Morone americana in the Patuxent River estuary. We observed that, soon after the larvae...
متن کاملBioenergetic trajectories underlying partial migration in Patuxent River (Chesapeake Bay) white perch (Morone americana)
Partial migration, the coexistence of resident and migratory individuals within the same population, may be common in fish populations. A proposed mechanism underlying partial migration is differing dispersive responses to early growth conditions, but few studies have explicitly tested this. During their first year of life, white perch (Morone americana) in the Patuxent River (Maryland, USA) ex...
متن کاملEndocrine disruption and altered gonadal development in white perch (Morone americana) from the lower Great Lakes region.
High prevalences of gonadal intersex have been observed in wild fish populations in areas affected by domestic and industrial effluents. For this study, fish were collected in 1998 from the Cootes Paradise region of Hamilton Harbour in western Lake Ontario, Canada, to determine whether gonadal abnormalities, including intersex, were present in young of the year (YOY) fish. No gonadal abnormalit...
متن کاملDeduced primary structures of three vitellogenins and specific binding to putative multiple ovarian receptors in white perch (Morone americana)
three complete cdnas encoding different forms of vitellogenin (vtg) were cloned from a white perch (Morone americana) liver cdna library. the two longest cdnas encoded Vtgs with a complete suite of yolk protein domains that, based on comparisons with vtg sequences from other species, were categorized as Vtgaa and Vtgab. the shorter cdna encoded a Vtg that lacked a phosvitin domain, had a shorte...
متن کاملPartial Migration Across Populations of White Perch (Morone americana): A Flexible Life History Strategy in a Variable Estuarine Environment
We evaluated the prevalence of partial migration, coexisting resident and migratory life history types, within six white perch (Morone americana) populations in sub-estuaries (Upper Bay, and Potomac, Choptank, Nanticoke, James, and York Rivers) of the Chesapeake Bay. Otolith stable isotope (δO) values were used to resolve fish habitat use along an estuarine salinity gradient and define resident...
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ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 1991
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao011225