Results 171 to 180 of about 6,333 (215)
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Experimental Infections of Waterfowl with Sphaeridiotrema globulus (Digenea)
Journal of Wildlife Diseases, 1989Sphaeridiotrema globulus in experimentally infected mute swans (Cygnus olor), mallard ducks (Anas platyrhynchos) and Canada geese (Branta canadensis) induced ulcerative hemorrhagic enteritis. Sites of infection include the jejunum and ileum. The digeneans ulcerated the intestine. The inflammatory response was primarily lymphocytic with some eosinophils.
J E, Huffman, D E, Roscoe
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Opistholobetines (Digenea: Opecoelidae) in Australian tetraodontiform fishes
Systematic Parasitology, 2018Opistholebetine opecoelids are reported following examination of 1,041 individual tetraodontiform fishes, comprising 60 species and seven families, collected in Australian waters between 1986 and 2018. Nine species consistent with Opistholebes Nicoll, 1915, Heterolebes Ozaki, 1935 or Maculifer Nicoll, 1915 were recovered. However, phylogenetic analysis
Storm B. Martin +3 more
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Introduction of a Brachylaima species (Digenea: Brachylaimidae) to Australia
International Journal for Parasitology, 1990A Brachylaima species recorded previously from the house mouse (Mus domesticus) in South Australia is shown to use the introduced European snails Cernuella virgata and Cochlicella barbara as first intermediate hosts, and the same two species and Theba pisana as second intermediate hosts. The life cycle is typical of Brachylaima species. The parasite is
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Control of Swimming in Cercariae of Proterometra macrostoma (Digenea)
The Journal of Parasitology, 1983A specific acetylcholinesterase (AChE) was localized histochemically in Proterometra macrostoma cercariae. This esterase activity was inhibited by eserine, but was resistant to tetraisopropyl pyrophosphoramide. A transverse band of intense AChE activity was observed in the posterior region of the tail.
G L, Uglem, D J, Prior
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Sporocysts of Mesostephanus haliasturis (Digenea) produce miracidia
International Journal for Parasitology, 1993This is the sixth report of a trematode that produces miracidia in its Sporocysts. Experimentally, we induced transmission of this parasite from snails to fish to cormorants. Thus, adult specimens were obtained and the species identified for the first time.
Barker, Stephen C., Cribb, Thomas H.
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Studies on some digenea of the familyDidymozoidae
Proceedings / Indian Academy of Sciences, 1966In the light of the above discussion, it appears that the parasites and their hosts form a biotype which is both exclusive and interchangeable. In the former case it is of such an extreme association as to be confined to a very limited geographical region. Using the parasites as “biological tags” in such cases appears to have great possibilities.
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A molecular phylogeny of the genus Ichthyocotylurus (Digenea, Strigeidae)
International Journal for Parasitology, 2001Three nucleotide data sets, two nuclear (ribosomal internal transcribed spacer regions 1 and 2, ITS1 and ITS2) and one mitochondrial (cytochrome c oxidase subunit 1, CO1), were analysed using distance matrix and maximum likelihood methods to determine the inter-relationships amongst the four species attributed to the genus Ichthyocotylurus Odening ...
A S, Bell +2 more
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A Phylogeny of Life-cycle Patterns of the Digenea
1972A comparison of helminth life-cycles reveals a number of singular features in the digenean pattern. Thus, in addition to the most singular feature, alternation of generations, there is the ubiquity of the cercaria, a stage designed for escape from the molluscan first host and for swimming, two patterns of behavior that are not called for in many life ...
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Journal of Wildlife Diseases, 1988
Over the past 20 yr, recurrent late-summer mortality of dabbling ducks in southern Québec has been attributed to the digenean parasite Cyathocotyle bushiensis. This study attempted to determine whether this parasite was still implicated in the epizootics, and examined aspects of the ecology of the parasite in the definitive host.
J, Hoeve, M E, Scott
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Over the past 20 yr, recurrent late-summer mortality of dabbling ducks in southern Québec has been attributed to the digenean parasite Cyathocotyle bushiensis. This study attempted to determine whether this parasite was still implicated in the epizootics, and examined aspects of the ecology of the parasite in the definitive host.
J, Hoeve, M E, Scott
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Ultrastructural study of vitellogenesis in Maritrema feliui (Digenea, Microphallidae)
Parasitology Research, 2011During vitellogenesis in the microphallid trematode Maritrema feliui, we distinguished four stages: (I) a stem cell stage of the gonial type; (II) an early differentiation stage with the main cell activity concentrated on the initiation of protein synthetic activity and the beginning of shell globule formation; (III) an advanced differentiation stage ...
Zdzisław, Swiderski +5 more
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