Kết quả bước đầu thăm dò khai thác mực lá đại dương (<i>Thysanoteuthis rhombus</i>) ở vùng khơi Miền Trung, Việt Nam

Abstract

In the research on informing diamondback squid (Thysanoteuthis rhombus) exploitation in the offshore region in Central Vietnam, the researchers investigated factors influencing catch yields to propose suitable exploitation technology for fishing conditions to increase exploitation production and economic efficiency. The research was conducted in September 2023 in the sea area with latitudes from 14⁰35' N to 17⁰07' N and longitudes from 109⁰34' E to 111⁰57' E. The research used diamondback squid fishing lines to conduct 3 exploration trips and collected 46 diamondback squids. The study showed that the total mass of diamondback squid collected was 257.7 kg, with an average catch of 2.78 kg/fishing line. Diamondback squid has a length ranging from 370 to 710 mm and a weight ranging from 1.5 to 10.4 kg. The food composition of diamondback squid belongs to 2 groups, in which bony fish are the dominant food group; diamondback squid exploitation output is high at depths of 150 m and 100 m with seawater temperatures ranging from 15.5 to 19.5⁰C.

Keywords: Diamondback Squid, exploration, Vietnam.