牡丹江葛氏鲈塘两性异形及其食性研究

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关键词：葛氏鲈塘（Perccottusglenii）；两性异形；食性；DNA宏条形码技术

中图分类号：Q917.4 文献标识码：A

文章编号：0439-8114（2026）01-0124-07

DOI：10.14088/j.cnki.issn0439-8114.2026.01.021 开放科学（资源服务）标识码（OSID）：

The sexual dimorphism and feding ecology of Perccottus gleniin the Mudanjiang River

LI Dian-wei1，XUMeng-hao1，SHANHong-jia1，²，YANGBin-bin1，XUQing1，WANGWan-ting1， ZHANGCheng-zhi³，DINGSen²

（1.ColegecoUij; ofEviotaa3siutdb China）

Abstract：Toexplortesealdmorpsmpaesdfoodesourceutlaionharacteristisofercotusglenii，totalf8e ccottus gleniispecimens（2femalesand36males）wrecollctedbygiletfsingintheoaiTownsectionoftheMudajangRiver Basinfrom SeptembertoNovember2O23.After measuring 26morphologicaltraits，multivariatestatisticalanalysis methods wereappliedtodetectthemorphologicalsexualdimorphismcharacteristics，andDNAmetabarcodingtechnologywasusedtorevealitsfod composition.TheresultsshowedthattherewasnosignificantdiferenceinbodysizebetweenmaleandfemalePercotusglen，but significantsexualdimorpismwasobservedinpartialmorphologicaltraits.Amongtem，thertiosofadheighttoeadlength，dstancefromdorsalfintocaudalfintobodylength，pectoralfinlengthtobodylengthfirstdorsalfinbaselengthtobodylength，fist dorsalfinheighttobodylength，seconddorsalfinbaselengthtobodylength，seconddorsalfinheighttobodylength，andanalfin heighttobodylengthofmalesweresignificantlyhigherthanthoseoffemales，whiletheratioofpelvicfinlengthtobodylengthof maleswassignificantlylowerthanthatoffemales.Itwasinferedthattheformerasrelatedtosexualselection，andthelattrwasas sociatedithfecundityselection.ThefeedinghabitresultsindicatedthatPercotusgleniiwasanomnivorousfishwithapreferncefor carnivory，and its main food source was macroinvertebrates such as arthropods.

Key words： Perccottus glenii； sexual dimorphism；diet；DNA metabarcoding technology

鱼类基础生态学研究是制定鱼类资源保护与管理的科学依据[1。（剩余9732字）