Epizootiology of Perkinsus marinus, parasite of the pleasure oyster Crassostrea corteziensis, in the Pacific coast of Mexico

• Published in: Journal of invertebrate pathology 2016-09, Vol.139, p.12-18
• Main Authors: Cáceres-Martínez, Jorge, Madero-López, Luis Humberto, Padilla-Lardizábal, Gloria, Vásquez-Yeomans, Rebeca
• Format: Article
• Language: English
• Subjects: Animals; Apicomplexa; Crassostrea - parasitology; Crassostrea corteziensis; Crassostrea virginica; Dermo disease; Female; Host-Parasite Interactions; Male; Marine; Mexico; Oyster culture; Oyster disease; Perkinsosis; Perkinsus marinus; Prevalence; Seasons; Temperature
• ISSN: 0022-2011; 1096-0805
• DOI: 10.1016/j.jip.2016.07.003

[Display omitted] •This is the first epizootiological study of Perkinsus marinus in the West coast of America.•This is the first epizootiological study of Perkinsus marinus in a new host, the pleasure oyster Crassotrea corteziensis.•This is the first long term study on “dermo disease” in the West coast of America. The protozoan parasite Perkinsus marinus is the etiological agent of “dermo disease”. This pathogen is considered by the World Organization for Animal Health (OIE) as reportable due to the high mortalities that it produces in the eastern oyster Crassostrea virginica in the US. In 2006, this parasite was detected in the pleasure oyster Crassostrea corteziensis in Nayarit on the Pacific coast of Mexico, indicating a new host and an extension of its known distribution. Epizootiological data of P. marinus in the pleasure oyster are unknown. With the objective of determining the prevalence and intensity in relation with temperature and salinity throughout time, as well as for studying interactions of host size and sex with the parasite, a monthly sampling was carried out in two aquaculture sites of Nayarit from 2007 to 2014. A total of 7700 oysters were analyzed. In both localities, prevalence was low in winter (