| [citogenetic characterization of the tropical freshwater fish parachromis managuensis (pisces: cichlidae)]. | to describe the cytogenetics of the jaguar cichlid fish parachromis managuensis, we collected eight males and 13 females in villahermosa, tabasco, méxico. the specimens were processed with standard cytogenetic techniques (slightly modified), and high quality fields of chromosomes in mitosis and meiosis were obtained; 14 of these fields were analyzed by meristics and statistics methods. the specimens presented a diploid modal number of 2n = 48 chromosomes, which is similar to the number reported ... | 2006 | 18457172 |
| [ichthyofauna from wetlands of san pedro, balancán, tabasco, méxico]. | san pedro river's wetlands sustain trophic nets in the fluvial system, due to the high habitat availability, and space and temporal variations. in order to describe the relationship between environmental parameters and ichthyofauna, this study evaluated fish assemblages composition, distribution, abundance, density, biomass, richness species, diversity and equitability in the wetlands. sampling considered three different sites and climatic seasons (dry, rainy and cold fronts). the physical and c ... | 2011 | 21721234 |
| molecular identification of the advanced third-stage larvae (adv l(3)) of gnathostoma lamothei in tabasco, mexico. | advanced third-stage larvae (adv l(3)) of gnathostoma spp. were collected from the muscle tissue of three species of freshwater fish (i.e., gobiomorus dormitor, petenia splendida, and parachromis managuensis) in swamps of centla, tabasco, mexico. nine sequences of the its2 of the ribosomal dna of gnathostoma spp. were compared with sequences obtained from genbank for g. binucleatum, g. lamothei, g. miyazakii, g. spinigerum, and g. turgidum. sequences of the adv l(3) from p. splendida (isla china ... | 2010 | 19874909 |