Preliminary Studies on Reproductive Biology of Xenocypris microlepis

论文发布时间：[2009-05-26] 范文大全编辑：Voive.net

所有作者：刘敏熊邦喜吕光俊

作者单位：Huazhong Agriculture University

论文摘要：The investigation data of reproduction biology of Xenocypris microlepis in Daoguanhe Reservoir was introduced。 The obvious feature was the appearance of nuptial organs for males during reproduction periods。 Male to female ratio was about １。５５ to １ at that time。 Spawning stocks involved four age groups， and the main individuals were ２ to ３ years old， occupying about ８４。９７％ of the whole。 The minimum mature age was ２ both for males and females。 The absolute fecundity （F）ranged from ８２４７ to １５７８９９ eggs with an average of ７８６２９。３ eggs。 The relative fecundity to weight (FW) ranged from ９５ to ４８７ eggs with an average of ２２５。８ eggs， and that to length (FL) ranged from ８９４ to ５１１０ eggs with an average of ２７３８。４ eggs。 The results of correlation analysis indicated that fecundity of the fish could be fluctuated primarily by variations of body length， body weight， net weight， gonad mass and GSI。

关键词： Xenocypris microlepis reproductive biology preliminary study

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