Contracaecum rudolphii Hartwich (Nematoda, Anisakidae) from the Neotropical Cormorant, Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) in southern Brazil
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Contracaecum rudolphii Hartwich (Nematoda, Anisakidae) from the Neotropical Cormorant, Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) in southern Brazil
The present report is part of a larger study on the helminth fauna of Neotropical Cormorants, Phalacrocorax brasilianus (Gmelin, 1789) in Brazil, particularly, in the southernmost State of Rio Grande do Sul. The nematodes which were found loose in the proventriculus/ventriculus or in groups of adults of different ages and of L3 and L4 larval stages, forming eosinophylic granulomas had a prevale...
متن کاملCadmium and lead concentrations in Contracaecum rudolphii (Nematoda) and its host, the cormorant Phalacrocorax carbo (Aves).
There are a variety of ways to assess the environmental impacts on parasites (Lafferty D. 1997: Parasitol. Today 13: 251-255). Recent studies on endoparasites of fish have revealed that several helminths (mainly acanthocephalans, and to a lesser degree tapeworms) from the intestine of their definitive hosts bioconcentrate heavy metals above the values detected in host tissues (review in Sures B...
متن کاملExperimental studies on the development of Contracaecum rudolphii (Nematoda: Anisakidae) in copepod and fish paratenic hosts.
The larval development of the nematode Contracaecum rudolphii (Rudolphi, 1819), a common parasite of the proventriculus of cormorants, was experimentally studied. Within the eggs cultivated in freshwater under laboratory temperatures of 20-22 degrees C, the developing larva undergoes two moults on days 4-5, attaining the third larval stage. Most of the ensheathed third-stage larvae, 291-457 mic...
متن کاملFirst record of Contracaecum spp. (Nematoda: Anisakidae) in fish-eating birds from Zimbabwe.
Endoparasites of fish-eating birds, Phalacrocorax africanus, P. carbo, Anhinga melanogaster and Ardea cinerea collected from Lake Chivero near Harare, Zimbabwe, were investigated. Adult Contracaecum spp. were found in the gastrointestinal tract (prevalence 100 % in P. africanus, P. carbo and A. melanogaster; 25 % in A. cinerea). Parasite intensity was 11-24 (mean 19) in P. africanus, 4-10 (mean...
متن کاملExperimental infection of Carassius auratus (L., 1758) with the second stage larvae of the nematode Contracaecum rudolphii Hartwich, 1964.
Susceptibility of the goldfish to infection with the newly hatched second stage larvae of Contracaecum rudolphii was investigated under laboratory condition. A week after the larvae had been placed in the fish tank, the autopsied goldfish showed the nematodes in their intestine lumen. The majority of the larvae were dead. In week 2 and 3 of exposure, the larvae were being found exclusively in t...
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ژورنال
عنوان ژورنال: Revista Brasileira de Zoologia
سال: 2006
ISSN: 0101-8175
DOI: 10.1590/s0101-81752006000400046