Non-specific Defensive Factors of the Pacific Oyster Crassostrea gigas against Infection with Marteilioides chungmuensis: A Flow-Cytometric Study.
10.3347/kjp.2011.49.3.229
- Author:
Hee Jung CHOI
1
;
Jee Youn HWANG
;
Dong Lim CHOI
;
Min Do HUH
;
Young Baek HUR
;
Nam Sil LEE
;
Jung Soo SEO
;
Mun Gyeong KWON
;
Hye Sung CHOI
;
Myoung Ae PARK
Author Information
1. Pathology Division, National Fisheries Research and Development Institute (NFRDI), Busan 619-705, Korea. jyhwang@nfrdi.go.kr
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Marteilioides chungmuensis;
pacific oyster;
Crassostrea gigas;
flow cytometry;
hemocyte
- MeSH:
Animals;
Cell Count;
Cell Survival;
Cercozoa/*immunology/*pathogenicity;
Crassostrea/*immunology;
Flow Cytometry;
Granulocytes/immunology;
Hemocytes/immunology;
Phagocytosis
- From:The Korean Journal of Parasitology
2011;49(3):229-234
- CountryRepublic of Korea
- Language:English
-
Abstract:
In order to assess changes in the activity of immunecompetency present in Crassostrea gigas infected with Marteilioides chungmuensis (Protozoa), the total hemocyte counts (THC), hemocyte populations, hemocyte viability, and phagocytosis rate were measured in oysters using flow cytometry. THC were increased significantly in oysters infected with M. chungmuensis relative to the healthy appearing oysters (HAO) (P<0.05). Among the total hemocyte composition, granulocyte levels were significantly increased in infected oysters as compared with HAO (P<0.05). In addition, the hyalinocyte was reduced significantly (P<0.05). The hemocyte viability did not differ between infected oysters and HAO. However, the phagocytosis rate was significantly higher in infected oysters relative to HAO (P<0.05). The measurement of alterations in the activity of immunecompetency in oysters, which was conducted via flow cytometry in this study, might be a useful biomarker of the defense system for evaluating the effects of ovarian parasites of C. gigas.
