Proceedings of fisheries biology and assessment of Jack mackerel(Trachurus murphyi)inhabiting South Pacific

ZHANG Chang; LI Gang; CHEN Xinjun

doi:10.13984/j.cnki.cn37-1141.2023.06.020

Abstract：Jack mackerel(Trachurus murphyi)is an important economic fish species with a wide range of distribution,which is one of the main fishing targets in many countries and regions.In this study,the biological research progresses in the population structure,migration,growth,reproduction and feeding studies of jack mackerel inhabiting the South Pacific were preliminarily reviewed,which will provide a basis for systematically mastering the basic biology and management of this fish species.The migration pattern of this fish species is complex,and the population structure of this fish species is still controversial.Jack mackerel predates a variety of species.Its day and night vertical movement is relat-ed to the feeding habits.The fish species has multiple spawning grounds in both coastal waters and the high seas.Jack mackerel has an obvious diurnal vertical migration habit,and two types of horizontal migrations,seasonally from high seas to coastal waters and geographically New Zealand coasts to Chil-ean coasts on large scales.However,the specific migration patterns are still unclear,waiting for more studies.Many environmental factors like ocean currents,water masses,mesoscale eddies of different natures,sea surface temperatures,wind and salinity affect the resource of jack mackerel.In order to rationally develop and use jack mackerel resources in the future,it is necessary to continuously strengthen the cooperation among countries and regions,systematically surveying and studying the jack mackerel resources in the south Pacific Ocean,and take the impact of the environment on jack mackerel resources into account,so that a theoretical support for the sustainable use and scientific management of this fish species can be provided.