| infections of gyrodactylus bullatarudis and gyrodactylus turnbulli on guppies (poecilia reticulata) in trinidad. | gyrodactylus bullatarudis turnbull, 1956, and gyrodactylus turnbulli harris, 1986, are recorded from guppies (poecilia reticulata) from the northern mountains of trinidad. mixed infections of the 2 species were found at 9 localities. gyrodactylus turnbulli had a predominantly posterior distribution on the fishes, whereas g. bullatarudis was more anteriorly distributed. this is the first record of these species from guppies collected from within their original range. | 1992 | 1403438 |
| longer-term population dynamics of gyrodactylus bullatarudis and g. turnbulli (monogenea) on adult guppies (poecilia reticulata) in 50-i experimental arenas. | two suprapopulations of monogeneans, one each of gyrodactylus bullatarudis and g. turnbulli, on two groups of ten experimentally infected adult guppies (poecilia reticulata) were maintained separately in 50.1 aquaria and monitored over 210 days. the g. bullatarudis population had a pattern of initial growth, then a subsequent decline to extinction after 40 days. g. turnbulli, after initial population growth and decline, maintained low-intensity infections (0.33-3.3 parasites/host) on six hosts o ... | 1998 | 9766905 |
| parasitic infections in live freshwater tropical fishes imported to korea. | we examined 15 species of ornamental tropical fishes originating from southeast asia to determine the cause of losses among 8 fish farms in korea. a total of 351 individuals belonging to 5 different families (1 species of characidae, 6 of cichlidae, 3 of cyprinidae, 1 of heleostomatidae, and 4 of poecilidae) were collected for the purpose of detecting metazoan and protozoan parasites. parasites were fixed and stained using routine methods, and identified. we found 3 ciliates, 2 monogeneans, 1 ne ... | 2002 | 12542094 |
| morphological and molecular description of eight new species of gyrodactylus von nordmann, 1832 (platyhelminthes: monogenea) from poeciliid fishes, collected in their natural distribution range in the gulf of mexico slope, mexico. | eight new species of gyrodactylus are described from poecilia mexicana, poeciliopsis gracilis, pseudoxiphophorus bimaculatus [syn. = heterandria bimaculata], and xiphophorus hellerii collected in the nautla and la antigua river basins in veracruz, and in the tecolutla river basin in puebla, mexico. analyzing the morphology of the marginal hooks, gyrodactylus pseudobullatarudis n. sp. and gyrodactylus xtachuna n. sp. are both very similar to gyrodactylus bullatarudis; gyrodactylus takoke n. sp. r ... | 2015 | 26091759 |
| evidence for cryptic speciation in directly transmitted gyrodactylid parasites of trinidadian guppies. | cryptic species complexes are common among parasites, which tend to have large populations and are subject to rapid evolution. such complexes may arise through host-parasite co-evolution and/or host switching. for parasites that reproduce directly on their host, there might be increased opportunities for sympatric speciation, either by exploiting different hosts or different micro-habitats within the same host. the genus gyrodactylus is a specious group of viviparous monogeneans. these ectoparas ... | 2015 | 25574955 |
| can parasites use predators to spread between primary hosts? | parasites typically have low reproductive fitness on paratenic hosts. such hosts offer other significant inclusive fitness benefits to parasites, however, such as increased mobility and migration potential. the parasite fauna of the guppy (poecilia reticulata) is dominated by the directly transmitted ectoparasites gyrodactylus bullatarudis and gyrodactylus turnbulli. in the wild, close predatory and competitive interactions occur between the guppy and the killifish rivulus hartii. previous obser ... | 2013 | 23714691 |
| experimental infections with the tropical monogenean, gyrodactylus bullatarudis: potential invader or experimental fluke? | introduced exotic species have the potential to spread their associated parasites to native species which can be catastrophic if these hosts are immunologically naïve to the novel parasite. the guppy (poecilia reticulata) has been disseminated worldwide outside of its native habitat and therefore could be an important source of infection to native fish species. its parasite fauna is dominated by the ectoparasitic monogeneans, gyrodactylus turnbulli and gyrodactylus bullatarudis. the current stud ... | 2009 | 19394437 |
| host response to initial and challenge infections, following treatment, of gyrodactylus bullatarudis and g. turnbulli (monogenea) on the guppy (poecilia reticulata). | the host response of poecilia reticulata peters against two species of gyrodactylus (g. bullatarudis turnbull, 1956 and g. turnbulli harris, 1986) was investigated by comparing the dynamics of infrapopulations arising from initial infections, challenge infections begun 1 day after formalin treatment of 3-day-old initial infections and challenge control infections. the primary host response of p. reticulata to gyrodactylus was shown to be non-(gyrodactylus)-species-specific. observations of diffe ... | 1996 | 8801557 |
| the population dynamics of gyrodactylus bullatarudis (monogenea) within laboratory populations of the fish host poecilia reticulata. | experiments were undertaken to investigate the factors which influence the transmission dynamics of gyrodactylus bullatarudis within populations of laboratory guppies. the parasites possess a number of biological attributes which are almost unique amongst helminth parasites of vertebrates. these include the ability to reproduce viviparously and directly on the surface of the host, the ability to survive death of the host (for a short period of time) and the ability to transfer between hosts (des ... | 1984 | 6472882 |