| two new species of aristocleidus (monogenea) from the gills of the mexican mojarra eugerres mexicanus (perciformes, gerreidae) from southwestern mexico. | aristocleidus mexicanus n. sp. and aristocleidus lacantuni n. sp. are described from the gills of the mexican mojarra eugerres mexicanus (gerreidae, perciformes) from the rio lacantún basin, chiapas state, mexico. these new species differ from previously described congeneric species in the characteristics of several structures, including: (a) ventral anchors, with differences in length (i.e. 46-50 µm in a. mexicanus vs. 38-43 µm, 34-37 µm, and 26-33 µm in aristocleidus hastatus mueller, 1936, ar ... | 2015 | 26605987 |
| temporal variation of mexiconema cichlasomae (nematoda: daniconematidae) in the mayan cichlid fish cichlasoma urophthalmus and its intermediate host argulus yucatanus from a tropical coastal lagoon. | the aim of the present investigation was to determine whether temporal variation in environmental factors such as rainfall or temperature influence long-term fluctuations in the prevalence and mean abundance of the nematode mexiconema cichlasomae in the cichlid fish cichlasoma uropthalmus and its crustacean intermediate host, argulus yucatanus. the study was undertaken in a tropical coastal lagoon in the yucatan peninsula (south-eastern mexico) over an 8-year period. variations in temperature, r ... | 2013 | 23127328 |