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Age, growth and reproductive traits of invasive goby Taenioides cirratus in the Chaohu Lake, China

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文献类型：外文期刊

作者： Liang, Yangyang ¹ ; Fang, Ting ¹ ; Li, Jing ¹ ; Yang, Kun ¹ ; Zhao, Xiuxia ¹ ; Cui, Kai ¹ ; Lu, Wenxuan ¹ ;

作者机构： 1.Anhui Acad Agr Sci, Fisheries Res Inst, Key Lab Freshwater Aquaculture & Enhancement Anhu, Hefei, Peoples R China

关键词： biological invasion; life history; otolith; Taenioides cirratus

期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （影响因子：0.892；五年影响因子：0.956 ）

ISSN： 0175-8659

年卷期： 2020 年 36 卷 2 期

页码：

收录情况： SCI

摘要： The eel goby Taenioides cirratus (Blyth, 1,860) is a small fish inhabits muddy bottoms of brackish-water in the Indo-West Pacific. It has invaded many inland freshwater lakes in China, such as the Chaohu Lake, Gaoyou Lake and Nansi Lake, and its population increased rapidly in these freshwater lakes in recent years. The age, growth and reproductive traits of T. cirratus invading the Chaohu Lake were studied. A total of 482 specimens (210 females, 204 males and 68 juveniles) with total length (TL) ranging from 9.4 to 20.6 cm were collected using the benthic fyke nets at monthly intervals from March 2018 to February 2019. The sagittal otolith was used for age determination. Monthly variation of marginal increment ratio indicated that the annual forming of opaque band on sagittal otolith was completed during March and April. For both sexes, only four (from 0+ to 3+ years) age groups were observed and 1+ and 2+ years age individuals dominated the population. Back calculated length at age showed males grew faster than females. Both sexes reached maturity at 1+ year age and the TL at first maturity (TL50) was 12.6 cm for females and 11.9 cm for males. Monthly variation of gonado-somatic index indicated that the spawning occurred from May to August. The fecundity ranged from 967 ova to 5,114 ova, with a mean of 3,205 ova. Our study provides a comprehensive data on the key life history traits of T. cirratus for the first time.

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