| do environmental differences between lakes in northwestern argentinean patagonia affect the infection of philureter trigoniopsis (monogenea) in galaxias maculatus (osmeriformes)? | philureter trigoniopsis is the only parasite found in the ureters and urinary bladder of galaxias maculatus in patagonian andean lakes. the dynamics of this endoparasitic monogenean were studied in lake gutiérrez, a body of water with scarce shoreline vegetation, where the host has an annual cycle of migration to the deep pelagic zone of the lake. to compare variations of the infection related to differences between lakes, g. maculatus specimens were sampled monthly with baited traps from septem ... | 2009 | 18576893 |
| impact of a caged-trout farm on parasites of galaxias maculatus in lake moreno, southern argentina. | the present study was conducted to determine the impact of a caged-trout farm on the helminth parasites of the wild fish puyen chico (galaxias maculatus) in lake moreno, southern argentina. samples of water, fish (g. maculatus), and snails (heleobia hatcheri) were taken at 4 sampling stations in january 2001. wild fish were parasitized by 8 helminth species, all of which are endemic in the region; therefore, the farm did not introduce any helminth parasite to g. maculatus. fish captured near the ... | 2005 | 16108574 |
| allocreadium pichi n. sp. (trematoda: allocreadiidae) in galaxias maculatus (osteichthyes: galaxiidae) from lake moreno in patagonia (argentina). | allocreadium pichi n. sp. (trematoda: allocreadiidae) is described from the intestine of galaxias maculatus (osteichthyes: galaxiidae) from moreno lake in patagonia, argentina. this species is distinguished from a. patagonicum shimazu, urawa & coria, 2000, the other species recorded in the area, by its smaller body size, the diagonal position of the testes and different ratios of the suckers, testes and cirrus-sac in relation to body size. in addition, the synonymy of a. patagonicum with polylek ... | 2004 | 15218369 |
| component population study of acanthocephalus tumescens (acanthocephala) in fishes from lake moreno, argentina. | seasonal samples of all fish species from lake moreno were taken in order to determine the presence of paratenia, to evaluate the status of the hosts and to characterise the transmission of acanthocephalus tumescens (von linstow, 1896) at the component population level. prevalence, mean abundance, mean intensity, numbers of gravid females, relative abundance of the different fish species, relative output of eggs and relative flow rates for each host species were computed. acanthocephalus tumesce ... | 2003 | 12735727 |
| [new metacercariae of the genus tylodelphys (trematoda, diplostomatidae) in lacustrine populations of galaxias maculatus (teleostei, galaxiidae)]. | metacercariae of three new species of tylodelphys (trematoda, diplostomatidae) were found in the brain of galaxias maculatus (teleostei, galaxiidae), at the meliquina lake, neuquen province, argentina. these metacercariae are morphologically described as tylodelphys argentinus n. sp., tylodelphys barilochensis n. sp. and tylodelphys crubensis n. sp. this is the first time that a stage of genus tylodelphys is mentioned parasitizing galaxias maculatus. metacercariae of t. barilochen sis n. sp. wer ... | 1992 | 1306987 |