Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  20,406,826
  • Công bố khoa học và công nghệ Việt Nam

69.09.21

Nuôi trồng thuỷ sản

Trần Thị Thanh Huyền(1), Nguyễn Thị Trung, Đặng Thị Hoàng Oanh, Trương Nam Hải

Phân lập và tuyển chọn vi khuẩn Edwardsiella ictaluri từ mẫu cá tra Việt Nam (Pangasius Hypophthalmus) có biểu hiện bệnh gan thận mủ

Isolation of Edwarsiella ictaluri from Tra catfish (Pangisius hyphophthalamus) containing white lesion in liver, kidney and spleen

Công nghệ Sinh học

2013

1

83-90

1811-4989

Edwardsiella ictaluri is considered as one of the major pathogenic agents that causes disease in fish, necrotizes ogans such as liver, kidney spleen and brain of catfish, causing severe economic losses among fish farms in many countries. E. ictaluri - a Gram negative, short and rod shape bacterium (1 um in diameter and 2-3 um long), non-motile, non-spore formation, nagative for indole, H2S and urease production, positive for hemolysin, catalase and chondroitinase production. The comparison of 16S rDNA sequence showed that most bacteria strains isolated from Vietnam have high sequence similarity, and had over 99.6 percent 16S rDNA sequence similarity with the 16S rDNA sequence of Edwardsiella, indicating that they are all in the genus Edwardsiella. In addition with determination of eip18 specific gene of E. ictaluri, isolated bacterial strains from medical waste samples of Tra catfish from Vietnam were identified as the same species - E. ictaluri. So, it is indicated that E. ictaluri is one of the pathogenic bacteria that causes white lesion in liver, kidney and spleen in Tra catfish in Vietnam.

TTKHCNQG, CVv 262