Reproductive Biology of Mosquito Fish (Gambusia affinis) in different Habitats in Conghua, Guangdong
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Institute of Hydorbiology, Jinan University, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes ,Guangzhou 510632,China,Institute of Hydorbiology, Jinan University, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes ,Guangzhou 510632,China,Institute of Hydorbiology, Jinan University, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes ,Guangzhou 510632,China,Institute of Hydorbiology, Jinan University, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes ,Guangzhou 510632,China,Institute of Hydorbiology, Jinan University, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes ,Guangzhou 510632,China,Institute of Hydorbiology, Jinan University, Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes ,Guangzhou 510632,China

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    Abstract:

    This research assessed morphology, ovarian development, fecundity, etc. of the breeding population of mosquito fish, Gambusia affinis, found in streams, ponds, and farmlands of Conghua City, Guangdong. It was found that in no matter the water flow or the static water bodies, mosquito fish breeding season were from March to December, and there were more females than males. Female fish in ponds had significantly larger one-year means of body length and body mass than those in farmlands, but in the breeding season,their gonad indexes, brood amounts, body mass relative fecundity were significantly lower than those of farmlands, except for the larger egg sizes. Females in streams in the breeding season had the gonad indexes and body mass relative fecundity between those of ponds and farmlandsbut closer to those of the ponds, they conceived less but larger eggs.The results showed that there were different reproductive characteristics in different groups of G. affinss, and they were related to the environmental stability and food supply conditions.

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CUI Yi, YAO Da-Zhang, LIN Xiao-Tao, LIU Ming-Zhong, WANG Zheng-Kun, XU Zhong-Neng. 2016. Reproductive Biology of Mosquito Fish (Gambusia affinis) in different Habitats in Conghua, Guangdong. Chinese Journal of Zoology, 51(1): 57-65.

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History
  • Received:January 05,2015
  • Revised:January 06,2016
  • Adopted:October 10,2015
  • Online: January 15,2016
  • Published:
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