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| Matias, A. M.; Diaz, S.; Teixeira De Sousa, Joana; Villalba, A.; Carballal, M. J.; Leitao, A.. |
| Disseminated neoplasia (DN) is characterized by an abnormal cell proliferation, usually resulting in death of the affected mollusks. In the present study we performed, for the first time, karyotypes of two different stages of DN in the cockle Cerastoderma edule. Analysis of moderate (N2) and high (N3) severity neoplasic metaphases displayed a chromosome number ranging from 57 to 317, instead of the normal diploid number of 38. Cockles with N2 showed a lower percentage of microchromosomes and a higher ploidy than those with N3. The comparison of both cytogenetic profiles contributes to better understand the evolution of DN in cockles. |
| Tipo: Text |
Palavras-chave: Karyotype; Disseminated neoplasia; Cerastoderma edule; Microchromosomes. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00184/29550/27876.pdf |
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| Kerr, R.; Ward, G. M.; Stentiford, G. D.; Alfjorden, A.; Mortensen, S.; Bignell, J. P.; Feist, S. W.; Villalba, A.; Carballal, M. J.; Cao, A.; Arzul, Isabelle; Ryder, D.; Bass, D.. |
| Marteilia refringens causes marteiliosis in oysters, mussels and other bivalve molluscs. This parasite previously comprised two species, M. refringens and Marteilia maurini, which were synonymized in 2007 and subsequently referred to as M. refringens ‘O-type’ and ‘M-type’. O-type has caused mass mortalities of the flat oyster Ostrea edulis. We used high throughput sequencing and histology to intensively screen flat oysters and mussels (Mytilus edulis) from the UK, Sweden and Norway for infection by both types and to generate multi-gene datasets to clarify their genetic distinctiveness. Mussels from the UK, Norway and Sweden were more frequently polymerase chain reaction (PCR)-positive for M-type (75/849) than oysters (11/542). We did not detect O-type in... |
| Tipo: Text |
Palavras-chave: Marteilia refringens; Marteilia pararefringens; ITS1 rDNA; IGS rDNA; Paramyxida; Ascetosporea; Mytilus edulis; Ostrea edulis. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00444/55566/57177.pdf |
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