| cenotes (sinkholes) of the yucatan peninsula, mexico, as a habitat of adult trematodes of fish. | examination of a total of 581 fish specimens of 15 species from 39 cenotes (sinkholes) in the yucatan peninsula, southeastern mexico, revealed the presence of 10 species of adult trematodes. these were as follows: saccocoelioides sogandaresi lumsden, 1963, saccocoelioides sp. (family haploporidae), cichlasotrema ujati pineda et andrade, 1989 (angiodictyidae), crassicutis cichlasomae manter, 1936 (homalometridae), magnivitellinum simplex kloss, 1966 (macroderoididae), stunkardiella minima (stunka ... | 1995 | 9599426 |
| [gnathostoma binucleatum (spirurida: gnathostomatidae) from the freshwater fish in tabasco, mexico]. | human gnathostomiasis is a food-born parasitic disease of relative importance in many countries in southeast asia. it is caused by several species of nematodes of the genus gnathostoma. in mexico is an emerging public health problem since 1970, when first cases were reported. until today, larval morphometric characters that have been proposed to differentiate between the three species of gnathostoma present in this country, are not satisfactory. recently, the presence of advanced third-stage lar ... | 2004 | 17354387 |
| 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 |
| otolith microchemistry of tropical diadromous fishes: spatial and migratory dynamics. | otolith microchemistry was applied to quantify migratory variation and the proportion of native caribbean stream fishes that undergo full or partial marine migration. strontium and barium water chemistry in four puerto rico, u.s.a., rivers was clearly related to a salinity gradient; however, variation in water barium, and thus fish otoliths, was also dependent on river basin. strontium was the most accurate index of longitudinal migration in tropical diadromous fish otoliths. among the four spec ... | 2014 | 24673161 |
| a capture-recapture model of amphidromous fish dispersal. | adult movement scale was quantified for two tropical caribbean diadromous fishes, bigmouth sleeper gobiomorus dormitor and mountain mullet agonostomus monticola, using passive integrated transponders (pits) and radio-telemetry. large numbers of fishes were tagged in río mameyes, puerto rico, u.s.a., with pits and monitored at three fixed locations over a 2·5 year period to estimate transition probabilities between upper and lower elevations and survival probabilities with a multistate cormack-jo ... | 2014 | 24673127 |
| predation's role in life-history evolution of a livebearing fish and a test of the trexler-deangelis model of maternal provisioning. | populations experiencing consistent differences in predation risk and resource availability are expected to follow divergent evolutionary trajectories. for example, live-history theory makes specific predictions for how predation should drive life-history evolution, and according to the trexler-deangelis model for the evolution of matrotrophy, postfertilization maternal provisioning is most likely to evolve in environments with consistent, high levels of resource availability. using the model sy ... | 2013 | 23234847 |
| introduced predator elicits deficient brood defence behaviour in a crater lake fish. | introduced species represent one of the most serious global threats to biodiversity. in this field-based study, we assessed behavioural responses of brood tending cichlid fish to an invasive predator of their offspring. this was achieved by comparing parental defence responses of the endangered arrow cichlid (amphilophus zaliosus), a fish species endemic to the crater lake apoyo in nicaragua, towards the bigmouth sleeper (gobiomorus dormitor), a formidable predator of cichlid fry, and all other ... | 2012 | 22253881 |
| the effect of luminance upon the distribution and behavior of the eleotrid fish gobiomorus dormitor, and its prey. | gobiomorus dormitor success in capturing prey, cichlids, poeciliids and atherinids, is correlated with low luminance. both prey and predator populations inhabiting rocky areas in lake jiloa, nicaragua shift to deeper water during the dry season when luminance is greater. predator and prey populations are also deeper over bright sandy areas than over rocks. predators, during the middle of the day, attack prey significantly less in water above 3 m than in water between 3-12 m, but there is a signi ... | 1979 | 441453 |