Population structure and reproductive biology of the mysid Nanomysis siamensis(Crustacea:Mysida)in Songkhla Lagoon system,southern Thailand

作     者：Rofiza YOLANDA Vachira LHEKNIM Rofiza YOLANDA;Vachira LHEKNIM

作者机构：Division of Biological ScienceFaculty of SciencePrince of Songkla UniversitySongkhla 90112Thailand 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2021年第39卷第3期

页      面：997-1009页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：Supported by the Research Project on“Distribution patterns and variability in abundance of post larvae and juvenile of Metapenaeus spp.for fi shery status and management guidelines in Thale Sap Songkhla,southern Thailand”which is supported by the Prince of Songkla University(No.SCI600364S) the Higher Education Research Promotion and the Thailand’s Education Hub for ASEAN Countries Project Offi ce at Higher Education Commission(No.TEH-AC 042/2017) the Research Funding from the Graduate School,Prince of Songkla University,Thailand 

主　　题：brackish water reproductive trait Thale Sap Thale Sap Songkhla 

摘      要：Songkhla Lagoon in southern Thailand is a large lagoon with brackish water where the mysid Nanomysis siamensis *** has long been the dominant mysid species in this ***,nothing is known about the biology and ecology of *** for the first time,we provide information about its demographic structure and reproductive biology in the Songkhla Lagoon *** conducted monthly sampling from June 2017 to June 2018 at five stations in Thale Sap and seven stations in Thale Sap *** were classified into six *** monthly mean density ranged 8.44-807.33 inds./100 m^(2) in Thale Sap and 8.81-434.44 inds./100 m^(2) in Thale Sap *** peak occurrence of this species was in May 2018 in Thale *** population composition was as follows:juvenile 10.13%,immature males 13.45%,immature females 10.54%,mature males 26.19%,mature females 21.63%and ovigerous females 18.05%.The proportion of ovigerous females was statistically significant and brooding females in the nauplioid stage were more dominant than embryonic phase and post-nauplioid *** size varied from 1 to 17,the embryo diameter ranging from 0.2 to 0.4 mm and the lengths of the larvae ranged from 0.5 to 1.0 *** was a positive correlation between brood size and brood length with ovigerous female body ***,mature males were predominant over the five population composition types,and reproduction in *** was observed every month.