Temporal distribution of potentially pathogenic agents detected on carpet-shell clam, Ruditapes decussatus cultured in Galicia (NW Spain)

An histology and pathological survey on carpet-shell clam cultured in the south of Galicia (NW Spain) (Ruditapes decussatus) was carried out for a two years period (2000-2001). A temporal distribution of the potentially pathogenic agents were determined by histological analysis. In addition, stocks of molluscs reported to suffer mortalities during the studied period were also analyzed and the pathogenic burden determined. Pathogens do not follow a temporal pattern over studied period and no significant differences were detected nor on the presence nor in prevalence of these pathogens among all the analysed stocks. Therefore, no direct relationship can be established between infection by any pathogen and mortality episodes.

[1]  J. Romalde,et al.  The susceptibility of Irish-grown and Galician-grown Manila clams, Ruditapes philippinarum, to Vibrio tapetis and Brown Ring Disease. , 2007, Journal of invertebrate pathology.

[2]  A. Villalba,et al.  Study of perkinsosis in the carpet shell clam Tapes decussatus in Galicia (NW Spain). II. Temporal pattern of disease dynamics and association with clam mortality. , 2005, Diseases of aquatic organisms.

[3]  M. Cancela,et al.  Perkinsus sp. infestation in carpet-shell clams, Ruditapes decussatus (L), along the Portuguese coast. Results from a 2-year survey , 2004 .

[4]  B. Novoa,et al.  Molecular detection of a haplosporidian parasite in carpet shell clam Ruditapes decussatus from Spain. , 2004, Diseases of aquatic organisms.

[5]  Antonio Villalba,et al.  Perkinsosis in molluscs: A review , 2004 .

[6]  A. Villalba,et al.  Perkinsus mediterraneus n. sp., a protistan parasite of the European flat oyster Ostrea edulis from the Balearic Islands, Mediterranean Sea. , 2004, Diseases of aquatic organisms.

[7]  A. Figueras,et al.  Histopathology of the infection by Perkinsus atlanticus in three clam species (Ruditapes decussatus, R. philippinarum and R. pullastra) from Galicia (NW Spain). , 2001 .

[8]  P. Hine,et al.  A survey of some parasites and diseases of several species of bivalve mollusc in northern Western Australia. , 2000, Diseases of aquatic organisms.

[9]  A. Figueras,et al.  Virus-like particles associated with mortalities of the carpet-shell clam Ruditapes decussatus. , 2000, Diseases of aquatic organisms.

[10]  A. Villalba,et al.  Branchial rickettsia-like infection associated with clam Venerupis rhomboides mortality , 1999 .

[11]  S. Ford,et al.  Range extension by the oyster parasite Perkinsus marinus into the northeastern United States: response to climate change? , 1996 .

[12]  Antonio Figueras Huerta,et al.  Brown ring disease and parasites in clams (Ruditapes decussatus and R. philippinarum) from Spain and Portugal , 1996 .

[13]  T. Renault,et al.  Rickettsia-like Organisms in the Cytoplasm of Gill Epithelial Cells of the Pacific Oyster Crassostrea gigas , 1994 .

[14]  J. I. Navas,et al.  Cross-infection with Perkinsus atlanticus in Ruditapes decussatus, Ruditapes philippinarum and Venerupis pullastra , 1994 .

[15]  L. Macedo,et al.  Perkinsus-marinus (Apicomplexa) As A Potential Source Of Oyster Crassostrea-virginica Mortality In Coastal Lagoons Of Tabasco, Mexico , 1994 .

[16]  J. Norton,et al.  Mortalities in the Giant Clam Hippopus hippopus Associated with Rickettsiales-like Organisms , 1993 .

[17]  M. Ruiz-Rico,et al.  Principal parasites observed in clams, Ruditapes decussatus (L.), Ruditapes philippinarum (Adams et Reeve), Venerupis pullastra (Montagu) and Venerupis aureus (Gmelin), from the Huelva coast (S.W. Spain). , 1992 .

[18]  A. Figueras.  Occurrence of haplosporidian and Perkinsus-like infections in carpet-shell clams, Ruditapes decussatus (Linnaeus, 1758), of the Ria de Vigo (Galicia, NW Spain) , 1992 .

[19]  E. Mialhe,et al.  Epizootiological study of rickettsiosis of the Saint-Jacques scallop Pecten maximus , 1991 .

[20]  C. Paillard,et al.  Origine pathogène de l'«anneau brun» chez Tapes philippinarum (Mollusque, bivalve) , 1989 .

[21]  M. Landolt.  Book reviewDiseases of marine animals: Vol. 1, edited by O. Kinne, John Wiley, New York, 1980, 466 pp., $70.00 , 1981 .

[22]  H. I. Battle,et al.  The gross and microscopic anatomy of the digestive tract of the oyster, Crassostrea virginica (Gmelin) , 1957 .