| a new species of swingleus (monogenea: gyrodactylidae) from the mummichog fundulus heteroclitus, in the delaware bay. | swingleus ancistrus n. sp. (monogenea: gyrodactylidae) is described from the skin and fins of fundulus heteroclitus from canary creek marsh, lewes, delaware. subsequent records from new jersey, maryland, virginia, and north carolina are reported. swingleus ancistrus is differentiated from s. polyclithroides, the only other species of the genus, primarily by its size, haptoral morphology, host, and locality. swingleus ancistrus is larger in almost every dimension and exhibits a distinct notch on ... | 2000 | 11191894 |
| endocrine disruption: thyroid dysfunction in mummichogs (fundulus heteroclitus) from a polluted habitat. | mummichogs (fundulus heteroclitus) from piles creeks (pc), new jersey (a polluted site), are sluggish and show poorer prey capture and predator avoidance than reference fish from tuckerton (tk). the behavioral dysfunction of the pc fish may be associated with thyroid impairment due to endocrine disruption. in this study, we compared thyroid histology and thyroid hormones in the two populations and determined experimentally whether the polluted environment could alter thyroid hormone levels. pc f ... | 2000 | 11460725 |
| evaluation of potential relationships between chemical contaminants in sediments and aquatic organisms from the lower passaic river, new jersey, usa. | the lower passaic river, new jersey, usa, a tidal tributary to newark bay and part of the new york and new jersey harbor estuary, is contaminated with a variety of persistent organic pollutants (pops) due to nearly two centuries of heavy industrialization and urbanization. resident aquatic organisms are exposed to, and can bioaccumulate, a variety of chemical contaminants from sediments, water and other organisms. in the present study, the relationships between selected pops detected in both sur ... | 2011 | 21520249 |
| contaminants in fish of the hackensack meadowlands, new jersey: size, sex, and seasonal relationships as related to health risks. | the trace metal content and related safety (health risk) of hackensack river fish were assessed within the hackensack meadowlands of new jersey, usa. eight elements were analyzed in the edible portion (i.e., muscle) of species commonly taken by anglers in the area. the white perch collection (morone americana) was large enough (n = 168) to enable statistically significant inferences, but there were too few brown bullheads and carp to reach definite conclusions. of the eight elements analyzed, th ... | 2007 | 17106790 |
| enzymatic and estrogenic responses in fish exposed to organic pollutants in the new york-new jersey (usa) harbor complex. | this study examines biochemical and hormonal responses in resident and migratory fish from the new york-new jersey (usa) harbor complex (ny-njhc) and those treated with sediment-associated organic contaminants. following laboratory exposures to organic extracts of ny-njhc sediments (injection), livers from adult male mummichogs, fundulus heteroclitus, were analyzed for vitellogenin (vtg), cytochrome p4501a (cypia), cyp3a, and estradiol 2-hydroxylase (e2ohase) and ethoxyresorufin-o-deethylase (er ... | 2004 | 15095891 |
| pcb congener distributions in muscle, liver and gonad of fundulus heteroclitus from the lower hudson river estuary and newark bay. | gradients in sediment polychlorinated biphenyl (pcb) concentrations and pcb congener profiles exist along the hudson river (ny, usa). we evaluated site and tissue differences in pcb concentration and congener profiles in resident mummichog (fundulus heteroclitus) collected from pcb-contaminated sites in the lower hudson river and the new york/new jersey harbor estuary. fish were collected from three pcb-contaminated sites piermont marsh (p), iona marsh (i), and newark bay (nb), and from two refe ... | 2003 | 12738290 |
| organochlorine pesticide and polychlorinated biphenyl residues in selected fauna from a new jersey salt marsh--1967 vs. 1973. | more than a half million pounds of ddt were applied to control mosquitoes in salt marsh estuaries of cape may county, new jersey, from 1946 to 1966. the use of ddt was discontinued in the county after 1966. in 1967, mean concentrations of ddt and metabolites ranged from 0.63 to 9.05 ppm in aquatic fauna, but by 1973 mean residue levels had decreased 84 to 99 percent among nine species. dde was still present at reduced levels in nearly all samples in 1973, but other ddt isomers had mostly disappe ... | 1977 | 404626 |