1,721,062 research outputs found
Studies on the development of Anguillicola crassus Kuwahara, Niimi et Itagaki, 1974 (Nematoda: Dracunculoidea) in the intermediate host
No full textParasitic infections of Chamelea gallina (Mollusca, Bivalvia) from commercially exploited banks of the Adriatic Sea
No full textA parasitological survey of the bivalve Chamelea gallina was carried out from natural beds of the Adriatic Sea, where anomalous mortalities were observed during the last years (1997-1999). The occurrence of protozoans belonging to the families Porosporidae, Hemispeiridae and Trichodinidae was recorded. Porosporidae of the genus Nematopsis, present with 4 species, showed a prevalence of 100%, irrespective of sampling localities, season or bivalve size, but differences were found when percentage of infection was calculated per organ. As for the genus Porospora this is the first record in C. gallina. Among Hemispeiridae, the genera Ancistrum and Boveria were found in the gills. The results suggest that severe infections of protozoans of the genus Nematopsis could cause a not negligible respiratory sufferance, with a possible role in the decline of the natural banks
Gyrodactylus orecchiae sp. n. (Monogenea: Gyrodactylidae) from farmed populations of gilthead seabream (Sparus aurata) in the Adriatic Sea.
No full textGyrodactylus orecchiae sp. n. (Monogenea, Gyrodactylidae) is described from the skin, fi ns, eyes and gills of juvenile
Sparus aurata L. (gilthead seabream) following two outbreaks of gyrodactylosis amongst stocks held in inshore fl oating cages on
the Adriatic coast of Albania and Croatia. Fish were heavily infected (1000+ gyrodactylids/fi sh) with G. orecchiae which reportedly
resulted in ~2–10% mortality amongst the infected stock. Morphologically, the haptoral hooks of G. orecchiae most closely
resemble those of Gyrodactylus arcuatus Bychowsky, 1933 in the approximate shape of the ventral bar with its pronounced ventral
bar processes and marginal hook sickles which possess a square line to the inner edge of the sickle blade and large rounded heels.
The marginal hooks are also morphologically similar to those of Gyrodactylus quadratidigitus Longshaw, Pursglove et Shinn, 2003
and Gyrodactylus colemanensis Mizelle et Kritsky, 1967, but G. orecchiae can be readily discriminated from all three species by
the characteristic infolding of the hamuli roots and the shape of the marginal hook sickle. Molecular sequencing of the ITS1, 5.8S,
ITS2 regions (513+157+404 bp, respectively) of G. orecchiae and alignment with other gyrodactylids for which these same genomic
regions have been determined, suggests that this is a new species. No similarities were found when the ITS1 region of G. orecchiae was compared with 84 species of Gyrodactylus available on GenBank
Social determinants associated with Giardia duodenalis infection in southern Côte d'Ivoire.
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Genotype characterization of Acanthamoeba in Italy and first identification of T15 genotype from a patient with keratitis
No full textAcanthamoeba nelle acque: un problema di sanità pubblica in Italia. Roma: Istituto Superiore di Sanità; 2013. (Rapporti ISTISAN 13/16).
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