| persistent organic pollutants and histological lesions in mayan catfish ariopsis assimilis from the bay of chetumal, mexico. | livers of catfish (ariopsis assimilis) from the bay of chetumal were analyzed for organochlorine compounds and hydrocarbons as part of a study to diagnose the environmental health of the bay after a catfish mass mortality that occurred in 1996. the presence of histological lesions in several organs of the fish as result of chemical exposure was also evaluated. the concentrations of organic pollutants found in the bay may be considered high if compared to the levels reported for sites affected by ... | 2004 | 14972578 |
| potential interactions between metazoan parasites of the mayan catfish ariopsis assimilis and chemical pollution in chetumal bay, mexico. | the effect of pollutants on the intensity of infection of metazoan parasites in the mayan catfish, ariopsis assimilis was investigated. data were collected on pollutants and metazoan parasites from 76 catfish from five localities in chetumal bay in october, 1996. nineteen pollutants (pesticides, polychlorinated biphenyls (pcbs) and polycyclic aromatic hydrocarbons (pahs)) were found in the catfish livers. heavy metal content was not determined. nineteen metazoan parasite species were recovered. ... | 2003 | 12756072 |
| procamallanus (spirocamallanus) chetumalensis n. sp. (nematoda: camallanidae) from the mayan sea catfish, ariopsis assimilis, off the caribbean coast of méxico. | procamallanus (spirocamallanus) chetumalensis n. sp. is described from the stomach and intestine of the mayan sea catfish ariopsis assimilis (günther, 1864), from the bay of chetumal, quintana roo, méxico. it is characterized by bifurcate deirids; males have 3 pairs of preanal papillae, 6 pairs of postanal papillae, 2 pairs of transverse elongate adanal papillae surrounding the cloacal aperture, wide caudal alae, spicules of unequal length, and a gubernaculum, and females have a rounded tail bea ... | 2002 | 12197127 |