Construction of individual-based ecological model for Scomber japonicus at its early growth stages in the Northwest Pacific
XING Yuna
LI Yuesong
PAN Lingzhi
ZHANG Yu
YU Wei
Abstract：Scomber japonicus is one of the main economic fish species in the Northwest Pacific,and plays an important role in the marine fishery of China.Based on the full understanding of the early life history of S.japonicus in the northwest Pacific,in this study,we used lagrange particle method to couple FVCOM physical model and individual-based-model,and constructed an individual-based ecolog-ical dynamic model of S.japonicus in the northwest Pacific to predict its transportation distribution and resource recruitment in the early life stage.The recruitment of S.japonicus and the transport of eggs and larvae from ground to the nursery were simulated under normal climate conditions from mid-March to the end of July.The results showed that the model could well simulate the early growth,re-source recruitment and transportation trend of S.japonicus in the northwest Pacific.The number of S.japonicus recruitment continued to decrease from March to July,and decreased almost linearly from March to April.The mortality rate reached its peak from the end of March to the end of April.From May,the mortality gradually decreased.From June to July,the mortality of larval fish decreased due to biological and environmental factors.Regarding the transport and distribution of S.japonicus,from the beginning of the simulation to the end,the transport of fish eggs and larvae are obviously controlled by the Kuroshio,and they have been passively transported along the direction of the mainstream axis of the Kuroshio.
Keywords：individual based modelnorthwest pacific scomber japonicusearly life historyrecruit-menttransport distribution
Publication Date：2025-02-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 62-69 )