Studies on Age, Growth and Fecundity of Xenocypris Microlepis in Daoguanhe Reservoir, Hubei Province

论文发布时间：[2009-05-14] 范文大全编辑：Voive.net

所有作者：刘敏熊邦喜

作者单位：College of Fisheries, Huazhong Agricultural University

论文摘要：A total of ３９７ samples collected monthly from Daoguanhe Reservoir from September ２００７ to August ２００８ were used to study the age， growth and fecundity of X。Microlepis。 Of which，１１５ species at state Ⅳ-Ⅴ were randomly selected from spawning season for fecundity studying。 A linear relationship was found between body length and radium of of scales。 The von Bertalanffy growth formulae were expressed as Lt=３６。９３。３(１-e-０。２６４１(t+０。２５２４))，Wt=８０５。５１９３(１-e-０。２６４１(t+０。７５２４))３。The inflexion age ti=３。４０７４， when the fish was ２４。６２cm in length and ２３８。６７ in weight。 Multi-regressive analyses showed its absolute fecundity and relative fecundity per centimeter were significantly related with body weight and maturing coefficient， and relative fecundity per gram (Fw) only related with maturing coefficient。

关键词： Age Growth Fecundity Xenocypris Microlepis Daoguanhe Reservoir

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