南方农业学报2025，Vol.56Issue(1)：324-333,10.DOI:10.3969/j.issn.2095-1191.2025.01.029
广西内陆水域常见野生罗非鱼的种群结构及其分布特征
Population structure and distribution characteristics of common wild tilapia in inland waters of Guangxi
摘要
Abstract
[Objective]To accurately study the population structure and distribution characteristics of common wild ti-lapia in inland waters of Guangxi,which could provide important reference for the protection of biodiversity in Guangxi waters.[Method]From February 2023 to January 2024,3 common wild tilapia species were collected from 29 sampling points in inland waters of Guangxi,and taken back to the laboratory to measure their biological indicators such as full length,body length and body mass.The gonad was dissected out to identify the male and female and determine the go-nadal development stage,and their ages were determined according to the scales.The distribution characteristics and population structure of the 3 tilapia species,including body length and body mass distribution,age structure and sex ra-tio,were analyzed by Excel 2020,Origin 8.0 and ArcGIS 10.8.[Result]A total of 2648 tilapia were collected.There were 745 Oreochromis niloticus,1379 Coptodon zillii and 524 Sarotherodon galilaeus.The size of C.zillii was smaller than those of O.niloticus and S.galilaeus,and the 3 tilapia were basically in a state of uniform growth,with fullness>1.00,and the tilapia in each sampling site grew well.O.niloticus and C.zillii were in the younger age group in Guangxi inland waters.The age distribution of S.galilaeus had certain regular characteristics,with older individuals mainly occurring in the lower reaches of Hongshui River and Xijiang River,while younger individuals were mainly distributed in Zuojiang River,Youjiang River and rivers that flowed into the sea.In general,there were more females than males in the 3 com-mon tilapia species in inland waters of Guangxi,with more males than females in some water systems.O.niloticus mainly distributed in the southern part of Guangxi,and less in the northern part of Guangxi.C.zillii could be found everywhere in the inland waters of Guangxi.S.galilaeus mainly distributed in Hongshui River and the main stream of Xijiang River,and there were also S.galilaeus distributed in Nanliu River.[Conclusion]O.niloticus and C.zillii tilapia have invaded the whole waters of Guangxi,and S.galilaeus is also distributed in most water systems in Guangxi,and its domestication de-gree can naturally overwinter in the northern part of Guangxi,affecting the biodiversity of local water ecosystems seve-rels.Therefore,in the future,the impacts of tilapia and other alien fish invasions on aquatic ecosystems should be at-tached great importance to,systematic research on monitoring and control should be strengthened,and effective measures to prevent tilapia from moving northward should be taken.关键词
罗非鱼/种群结构/分布特征/广西内陆水域Key words
tilapia/population structure/distribution characteristics/inland waters of Guangxi分类
农业科技引用本文复制引用
乔梁,吴志强,刘昊,黄亮亮,何佳洋,李育森,宋韵涛,衷英杰..广西内陆水域常见野生罗非鱼的种群结构及其分布特征[J].南方农业学报,2025,56(1):324-333,10.基金项目
国家自然科学基金项目(32060830) （32060830）
广西重点研发计划项目(桂科AB22035050) （桂科AB22035050）
广西渔业资源调查项目(GXZC2022-G3-001062-ZHZB) （GXZC2022-G3-001062-ZHZB）
广西水产科学研究院重点实验室开放课题项目(GXKEYLA-2023-01-2) National Natural Science Foundation of China(32060830) （GXKEYLA-2023-01-2）
Guangxi Key Research and Develop-ment Plan Project(Guike AB22035050) （Guike AB22035050）
Guangxi Fisheries Resources Survey Project(GXZC2022-G3-001062-ZHZB) （GXZC2022-G3-001062-ZHZB）
Guangxi Academy of Fisheries Science Key Laboratory Open Project(GXKEYLA-2023-01-2) （GXKEYLA-2023-01-2）
