Results 221 to 230 of about 19,196 (260)

Studies on some digenea of the familyDidymozoidae

Proceedings / Indian Academy of Sciences, 1966
In 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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Are glial cells of the Digenea (Platyhelminthes) muscle cells?

Parasitology Research, 2019
Muscle cells of a digenean fish blood fluke, Aporocotyle simplex, aggregate along the periphery of the cerebral ganglia. Solitary myocytons and sarcoplasmic processes with muscle fibres give rise to long, narrow lamellate projections, which are visible along the periphery and within ganglia.
Larisa G. Poddubnaya, David I. Gibson
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A Phylogeny of Life-cycle Patterns of the Digenea

1972
Publisher Summary A 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 ...
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Diversity in the Monogenea and Digenea: does lifestyle matter?

International Journal for Parasitology, 2002
If the cestodes are excluded, then the parasitic platyhelminths of fishes divide neatly into the external and monoxenous Monogenea and the internal and heteroxenous Digenea. Both groups have apparently had long associations of coevolution, host switching and adaptation with fishes and have become highly successful in their respective habitats.
Cribb, T. H., Chisholm, L. A., Bray, R. A.   +2 more
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Ultrastructural study of vitellogenesis in Maritrema feliui (Digenea, Microphallidae)

Parasitology Research, 2011
During 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 ...
Jordi Miquel, Carlos Feliu, Isabel Montoliu, Zdzisław Świderski, Zdzisław Świderski, Abdoulaye J.S. Bakhoum, David I. Gibson   +6 more
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Sporocysts of Mesostephanus haliasturis (Digenea) produce miracidia

International Journal for Parasitology, 1993
This 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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A checklist of cercariae (Trematoda: Digenea) in molluscs from Brazil

Zootaxa, 2013
A checklist of digenetic trematodes found in molluscs from Brazil is presented based on 127 scientific articles published after a century of studies. To date 23 families, 35 genera and 46 species of trematodes were identified infecting 25 species of molluscs in the country.
Pinto, Hudson Alves, Melo, Alan Lane De
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Bacteria Associated with the Tegument of Clinostomum marginatum (Digenea)

The Journal of Parasitology, 1991
Adults of Clinostomum marginatum freshly collected from a heron, Ardea herodias, were examined using transmission electron microscopy. Specimens from the mouth of the bird were encrusted with bacteria that were not removed by washing unless the saline contained antibiotics. There was no evidence that the attached bacteria were damaging to the trematode
Gary L. Uglem, Omer R. Larson, John M. Aho, James P. Moore   +3 more
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Sulfated Polysaccharide from Digenea simplex Decreases Intestinal Inflammation in Rats

Revista Brasileira de Farmacognosia, 2020
Hercylianna Pamplonna Helysaromma Rossa Monturil, Tarcísio Vieira de Brito, José Simião da Cruz Júnior, G. J. D. Junior, Diva de Aguiar Magalhães, Stefany Guimarães Sousa, J. A. Batista, R. O. Damasceno, J. G. Pereira, J. X. Mesquita, D. Vasconcelos, J. D. de Oliveira, R. D. Bezerra, P. Soares, M. Souza, A. Freitas, A. Barbosa   +16 more
semanticscholar   +1 more source

Egg-shell in paramphistomatidae (Trematoda: Digenea)

Experientia, 1966
On a decouvert que, dans la famille des Paramphistomatidae (Trematodes), la coquille de l'∄uf, transparente et sans couleur, est une keratine-type de scleroproteine, constituee de disulphide en chaInes (-S-S-). On sait que chez d'autres trematodes, la coquille d'ceuf, d'une couleur ambree, est une proteine de quinone.
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