Size at sexual maturity and fecundity of the mola carplet Amblypharyngodon mola (Hamilton 1822) (Cyprinidae) in the Ganges River, Bangladesh

Q4 Environmental Science

Zoology and Ecology Pub Date : 2018-10-02 DOI:10.1080/21658005.2018.1537906

Md. Mosaddequr Rahman, M. Hossain, Anannaya Sen Tumpa, Md. Istiaque Hossain, M. Billah, J. Ohtomi

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引用次数: 13

Abstract

ABSTRACTAmblypharyngodon mola Hamilton 1822 is widely distributed in the freshwaters of Southeast Asia and is commercially important. We studied the size at sexual maturity (TL50) of A. mola in addition to its fecundity indices using samples collected from the Ganges River, Bangladesh. A total of 1200 individuals of A. mola were examined comprising 373 males and 827 females. Based on the relationship between gonadosomatic index (GSI) and total length (TL), males with a GSI ≥ 2.31% and females with a GSI ≥ 4.66% could roughly be defined as mature. The TL50, the TL at which 50% of individuals become mature, was estimated by logistic equation as 5.85 cm in males and 5.97 cm in females. The total fecundity (FT) ranged from 1652 to 15,985 (6255 ± 3640). Both the studied variables (TL and body weight, BW) were highly correlated with FT and can be used to estimate the total potential fecundity, although BW performed better. Our results provide an insight into the TL50 and reproductive potential of A. mola, which...

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孟加拉恒河中白鳍豚Amblypharyngdon mola（Hamilton 1822）（鲤鱼科）性成熟时的大小和繁殖力

摘要mola Hamilton 1822广泛分布于东南亚淡水中，具有重要的商业价值。我们使用从孟加拉国恒河采集的样本，研究了莫拉性成熟时的大小（TL50）及其繁殖力指数。共检测了1200只莫拉个体，包括373只雄性和827只雌性。根据性腺体指数（GSI）与总长度（TL）的关系，GSI≥2.31%的雄性和GSI≥4.66%的雌性可以大致定义为成熟。TL50，即50%个体成熟的TL，通过logistic方程估计为雄性5.85厘米，雌性5.97厘米。总繁殖力（FT）为1652~15985（6255±3640）。研究的两个变量（TL和体重，BW）都与FT高度相关，可以用来估计总的潜在繁殖力，尽管BW表现更好。我们的研究结果提供了对A.mola的TL50和繁殖潜力的深入了解。。。

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来源期刊

Zoology and Ecology Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

1.00

自引率

0.00%

发文量