Liting Wang

Author    Correspondence author
International Journal of Marine Science, 2025, Vol. 15, No.   
Received: 01 Jan., 1970    Accepted: 01 Jan., 1970    Published: 17 Oct., 2025

Scomberomorus spp. is one of the important economic fishes in China's offshore fisheries and aquaculture industries, but its wild population resources are under pressure from overfishing and environmental changes. Improve the growth performance of mackerels through selective breeding is expected to improve breeding efficiency and alleviate their dependence on wild resources. This study takes mackerel in Hainan as an example to analyze the genetic variation characteristics of growth traits (including body length, weight and growth rate) and the selection of breeding effects. The results show that the main growth trait of mackerel has a moderate level of heritability, and the selected breeding population exhibits faster growth rates and higher weight genetic gain relative to the natural population. At the same time, the genetic gain of different breeding generations shows a decreasing trend, showing that the impact of continuous selection on genetic variation needs attention. Case studies show that selective breeding strategies based on genetic parameter evaluation can effectively improve the growth traits of mackerels and provide practical basis for regional seawater fish breeding. This study provides scientific reference for the cultivation of mackerel species and the sustainable use of marine fishery resources in Hainan and other regions.