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Comparison of haemocytic parameters among flat oyster Ostrea edulis stocks with different susceptibility to bonamiosis and the Pacific oyster Crassostrea gigas ArchiMer
Comesana, Pilar; Casas, Sandra M.; Cao, Asuncion; Abollo, Elvira; Arzul, Isabelle; Morga, Benjamin; Villalba, Antonio.
Farming of the flat oyster Ostrea edulis in Europe is severely constrained by the protozoan Bonamia ostreae. The introduction of the resistant species Crassostrea gigas has been a relief for the farmers, while the pilot programmes to select O. edulis strains resistant to bonamiosis performed in various countries can be seen as a promising strategy to minimise the effects of bonamiosis. However, the physiological bases of this differential susceptibility remain unknown. A search for an explanation of the intra and interspecific differences in oyster susceptibility to bonamiosis was accomplished by comparing some immune parameters among various O. edulis stocks and C gigas. On December 2003, naive and Bonamia-relatively resistant flat oysters from Ireland....
Tipo: Text Palavras-chave: Ostrea edulis; Crassostrea gigas; Bonamia ostreae; Haemocyte; Phagocytosis; Respiratory burst; Nitric oxide.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00074/18501/16092.pdf
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Disseminated neoplasia in cockles Cerastoderma edule: ultrastructural characterisation and effects on haemolymph cell parameters ArchiMer
Diaz, Seila; Renault, Tristan; Villalba, Antonio; Carballal, María Jesús.
Disseminated neoplasia (DN) has been detected in cockles from various beds in Galicia (NW Spain). A study was performed to characterise cockle neoplastic cell ultrastructure and to evaluate the effect of this disease at different severity stages on various haemolymph cell parameters. Examination of cockle neoplastic cells with transmission electron microscopy (TEM) showed round shapes and a lack of pseudopods, a high nucleus:cytoplasm diameter ratio, Golgi complexes, abundant mitochondria, ribosomes, and numerous endoplasmic reticulum tubes and electron-lucent vesicles. Various haemolymph cell parameters (cell mortality, non-specific esterase and lysosome biovolume, reactive oxygen intermediates [ROI] production, phagocytosis ability, intracellular Ca2+...
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Ano: 2011 URL: https://archimer.ifremer.fr/doc/00043/15468/12846.pdf
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