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首页> 外文期刊>ScientificWorldJournal >Reproductive Ecology ofProchilodus brevisan Endemic Fish from the Semiarid Region of Brazil
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Reproductive Ecology ofProchilodus brevisan Endemic Fish from the Semiarid Region of Brazil

机译：来自巴西半干旱地区的繁殖生态学的繁殖生态学

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The commercially important migratory fishProchilodus brevisis from the Neotropical region, and understanding the reproductive ecology of this potamodromous fish is essential for its conservation and management. This study investigated the length-mass relationship, sex ratio, length at first gonadal maturity, gonadal development stages, gonadosomatic index, condition factor, and reproductive period ofP. brevis. Temporal distribution of rainfall, temperature, dissolved oxygen concentration, pH, and electrical conductivity of the water were related to the reproductive period of this fish. Rainfall seems to be the main environmental factor which modulates changes in limnological parameters and the timing of the spawning period of this fish.P. brevismigrates into lower reaches of the river to feed during the dry season and returns to the upper reaches during the rainy season to spawn. Inadequate facilities for migration create obstacles for spawning success of this ecologically important fish.
机译：来自探访的商业上重要的迁移鱼预言，以及了解这种促乘体鱼的生殖生态，对其保护和管理至关重要。本研究研究了第一次性质关系，性比率，性别比率，在第一次性腺成熟，促性腺发育阶段，促性腺指数，病情因子和生殖期间的繁殖期。 brevis。水的时间分布，水的温度，溶解氧浓度，pH和电导率与这种鱼的生殖期间有关。降雨似乎是调制Limnological参数变化的主要环境因素和这种鱼的产卵期的时间。在旱季期间饲喂河的下游，并在雨季返回上游以产卵。迁移设施不足会产生障碍，以产生这种生态上重要的鱼类的成功。

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