Một số đặc điểm sinh học của cá phèn vây vàng, Mulloidichthys vanicolensis (Valenciennes, 1831) ở vùng biển Tây Nam Bộ, Việt Nam=Biological characteristics of yellow-fin goatfish (Mulloidichthys vanicolensis (Valenciennes, 1831)) in Southwest Sea, Vietnam

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Phương Đông Tạ, Thị Ngọc Ánh Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học (Đại học Cần Thơ), 2024

Mô tả vật lý: tr.161-170

Bộ sưu tập: Metadata

ID: 244390

Thêm vào giỏ

Cá phèn vây vàng Mulloidichthys vanicolensis (Valenciennes, 1831) phân bố rộng khắp Ấn Độ - Thái Bình Dương và được khai thác phổ biến ở vùng biển Tây Nam Bộ, Việt Nam, nhưng đến nay nghiên cứu về đặc điểm sinh học của loài này còn rất hạn chế. Dựa trên số liệu sinh học nghề cá thu thập tại các cảng cá ở tỉnh Kiên Giang từ 7/2017 đến 12/2019, nghiên cứu đã xác định một số đặc điểm sinh học của loài cá kinh tế này. Kết quả cho thấy cá phèn vây vàng ở vùng biển Tây Nam Bộ sinh trưởng bất đẳng dương (b = 3,2)
các tham số tăng trưởng FL ¥ , K, Ø’ lần lượt là 184,2 mm, 0,95/năm và 4,5. Cá sinh sản lần đầu khi đạt chiều dài FL = 114 mm ở cá đực và 116 mm ở cá cái. Cá cái chiếm ưu thế trong quần thể với tỷ lệ giới tính là 0,6:1 (đực (M)/cái (F)). Cá phèn vây vàng sinh sản rải rác quanh năm, rộ hơn vào thời điểm đầu mùa khô (khoảng tháng 11-12) và đầu mùa mưa (khoảng tháng 5-6). Ngoài ra, nghiên cứu cũng chỉ ra rằng, cá phèn vây vàng đang bị khai thác quá mức với hệ số khai thác cao (E = 0,62).Yellow-fin goatfish, Mulloidichthys vanicolensis (Valenciennes, 1831) is a widely distributed fish in the Indo-Pacific oceans and is popularly exploited in the Southwest Sea of Vietnam. Contrary to its essential role, there is a lack of studies about the biology of this goatfish species. By analyzing the fisheries biology data of yellow-fin goatfish, the present study indicated some biological characteristics of this commercial species, including the length composition, growth, and reproduction characteristics. The results showed that M. vanicolensis in the Southwest Sea of Vietnam had a positive allometric type of growth (slope b = 3.2). The growth parameters including the asymptotic length (Linf), the growth coefficient (K), and the growth performance index (Ø’) were 184.2 mm, 0.95 year -1 , and 4.5, respectively. The fork length at first maturity was 114 mm in males and 116 mm in females. Females dominated the population with a sex ratio of 0.6:1 (M/F). Spawning time was scattered throughout the year, and a higher spawning rate occurred at the beginning of the dry and rainy seasons. In addition, this study showed that yellow-fin goatfish are over-exploited with high pressure (E=0.62).

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR