Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  29,841,656
  • Công bố khoa học và công nghệ Việt Nam

34.33.33

Động vật học

Đặng Đỗ Hùng Việt, Nguyễn Chánh Nghiệm(1)

Nghiên cứu biến động, mật độ phân bố trứng cá - cá bột nhằm xác định bãi đẻ của nhóm cá rạn san hô tại khu bảo tồn biển Vịnh Nha Trang

Studies on density change and distribution of fish eggs and larvae in order to definitons of spawning hold of coral reef fishes in Nha Trang MPA

Báo cáo khoa học về sinh thái và tài nguyên sinh vật (Hội nghị khoa học toàn quốc lần thứ năm)

2013

1715-1722

Four field surveys were carried out during rainy and dry seasons from 2009 to 2010 in Nha Trang MPA. A total of 64,660 fish eggs and 49 larvae were collected in 10 sampling sites. The density of fish eggs and larvae fluctuate seasonally.The density per 100m3 in rainy season is higher than that in dry season, more than 3.2 times in the number of fish eggs and more than 21 times in the number of fish larvae. The density of fish eggs and larvae were also unequally among the survey sites (SCs). In details, the density of fish eggs reached the highest value (7993.75) in SC 6 in September 2010 and the lowest value was 5.6 in SC 4. In September 2010, the density of larvae reached the highest value in SC 7 and 8 (11.29), while the lowest value was 0 in SC 5,6,7 in April 2010. Some coral reefs in the southeast areas of Hon Mot and Hon Mieu islands and Bai De Cape are determined as spawning and breeding grounds of coral reef fishes in the region. Therefore, these sites should be considered as high priority areas of conservation of coral reef fishes in Nha Trang MPA.

TTKHCNQG, Vd 1136/2014