| morphology of gnathostoma spp. isolated from natural hosts in sinaloa, mexico. | gnathostomosis is an emerging public health problem in sinaloa, mexico, where an increasing number of human cases have been diagnosed since 1989. the present study was carried out to determine the presence of the parasite in other natural hosts from the area. birds, fish, opossums and raccoons were captured from local dams and lagoons. the flesh from bird and fish specimens was ground and examined under a 100 w light bulb. larvae were processed for light and electron microscopy. a total of 368 a ... | 2002 | 12107456 |
| confirmation of gnathostoma binucleatum almeyda-artigas, 1991, advanced third-stage larvae in tres palos lagoon, mexico, by morphological and molecular data. | advanced third-stage larvae of gnathostoma sp. corresponding to 6 morphotypes, distinguished on the basis of the shape of the cephalic hooklets, were collected from the muscle tissue of 5 species of freshwater fish (i.e., dormitator latifrons, eleotris picta, gobiomorus maculatus, ariopsis guatemalensis, and cichlasoma trimaculatum) in tres palos lagoon, guerrero, mexico. principal components analysis of 4 morphological characters cluster all samples in a single taxonomic group. a minimum amount ... | 2005 | 17089777 |