| [parasites of salmo trutta l. from the tirino river. ii. host-parasite interactions of helminth species]. | the hundred and sixteen brown trout (salmo trutta l.) which were examined for helminth parasites were captured in the river tirino, (l'acquila - italy). six parasite species (phyllodistomum simile, crowcrocaecum testiobliquum, crepidostomum metoecus, cyathocephalus truncatus, truttaedacnitis truttae and dentitruncus truttae) were recovered. ecological studies on each helminth species recovered have been carried out analysing the following aspects; the preference of each parasite species for cert ... | 1978 | 553267 |
| [parasites of salmo trutta l. from the titino river. part iii. histological observations of parasites of the intestinal tract]. | during researches on helminth parasites of salmo trutta l. from the river tirino (l'aquila - italy) histological studies of the intestinal tract of brown trout infected by the following species: crowcrocaecum testiobliquum (wisnewski, 1932) skrjabin e koval, 1956; cyathocephalus truncatus (pallas, 1781);o truttaedacnitis truttae (fabricius, 1794) petter, 1974 and dentitruncus truttae sinzar, 1955 have been carried out. the attachment of the single species and the histological changes in the host ... | 1978 | 553268 |
| parasites of native and nonnative fishes of the little colorado river, grand canyon, arizona. | a 2-yr, seasonal, parasitological study of 1,435 fish, belonging to 4 species of native fishes and 7 species of nonnative fishes from the lower little colorado river (lcr) and tributary creeks, grand canyon, arizona, yielded 17 species of parasites. these comprised 1 myxozoan (henneguya exilis), 2 copepods (ergasilus arthrosis and lernaea cyprinacea), 1 acarine (oribatida gen. sp.), 1 piscicolid leech (myzobdella lugubris), 4 monogeneans (gyrodactylus hoffmani, gyrodactylus sp., dactylogyrus ext ... | 2004 | 15562604 |
| the influence of changing prey availability on the prevalence of diphyllobothrium in river otters from yellowstone national park. | parasite prevalence in predatory mammals is influenced by numerous factors including diet, sex, season, and habitat. we examined the effect of such factors on the prevalence of gastrointestinal helminths in north american river otters ( lontra canadensis ) in yellowstone lake, yellowstone national park. otters in this ecosystem have recently experienced a decline in their main prey, yellowstone cutthroat trout ( oncorhynchus clarkii bouvieri), and have, in turn, increased consumption of alternat ... | 2015 | 25192057 |
| morphological and molecular analyses of the spiruroid nematode, falcaustra araxiana massino, 1924 (= spironoura araxiana) from the european pond turtle (emys orbicularis). | there is little information on the phylogenetic position and life cycle of family kathlaniidae. falcaustra araxiana is a member of this family which infects the large intestine of the european pond turtle (emys orbicularis). in the present study, morphological data and molecular analyses based on the 18s rdna were performed on different types of f. araxiana originating from the large intestine and gastric nodules in the turtle. morphological data revealed both larvae and adult stages in the gast ... | 2017 | 27032867 |
| redescription and genetic characterization of cucullanus dodsworthi (nematoda: cucullanidae) from the checkered puffer sphoeroides testudineus (pisces: tetraodontiformes). | cucullanus dodsworthi barreto, 1922 was originally described from the checkered puffer fish, sphoeroides testudineus (linnaeus), from brazilian waters. new material of this nematode species was recovered from the same type host species from mexican waters off the yucatán peninsula. this material was compared with brazilian specimens. although mexican material closely resembles the original description of c. dodsworthi in general appearance, previously undescribed characters, as observed by light ... | 2011 | 21506838 |
| molecular phylogeny of clade iii nematodes reveals multiple origins of tissue parasitism. | molecular phylogenetic analyses of 113 taxa representing ascaridida, rhigonematida, spirurida and oxyurida were used to infer a more comprehensive phylogenetic hypothesis for representatives of 'clade iii'. the posterior probability of multiple alignment sites was used to exclude or weight characters, yielding datasets that were analysed using maximum parsimony, likelihood, and bayesian inference methods. phylogenetic results were robust to differences among inference methods for most high-level ... | 2007 | 17506928 |
| observations on the morphology, systematics, and biogeography of the genus truttaedacnitis (nematoda:cucullanidae). | all species of truttaedacnitis petter, 1974, were examined for a phylogenetic analysis. morphological studies showed that truttaedacnitis truttae (fabricius, 1794) from north america possessed a reduced button-shaped or nipple-shaped caudal mucron that is in contrast to the sharp spike-shaped mucron commonly reported in eurasian specimens. histological studies showed that the excretory pore in truttaedacnitis sphaerocephala (rudolphi, 1809) was situated near the level of the pseudobuccal capsule ... | 1996 | 8973409 |
| cecal histopathology caused by truttaedacnitis truttae (nematoda: cucullanidae) in rainbow trout, salmo gairdneri. | | 1983 | 6642859 |