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Differences in swimming ability and its response to starvation among male and femaleGambusia affinis

机译：雌雄同体游动能力及其对饥饿反应的差异

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To explore the differences in the swimming ability and environmental adaptive abilities between male and female?Gambusia affinis, we assessed the differences in burst swimming speeds (Uburst), critical swimming speeds (Ucrit) and their related fin areas, and consumption of energy substances after starvation at 0 (control group), 15, 30, 45, and 60?days, respectively. The results showed that the pectoral and caudal fin areas did not differ significantly between male and female?G. affinis. However, the dry mass, condition factors, and absolute contents of glycogen, lipids, and proteins were significantly elevated in females in the control group (P<0.05), whereas?Uburst?and?Ucrit?were significantly low (P<0.05). After starvation of 60?days, the rate of consumption of lipids was significantly low in the females (P<0.05). Although?Uburst?and?Ucrit?decreased linearly with increased duration of starvation, the coefficient of linear equation between?Ucrit?and starvation time was significantly lower in females than males (P<0.05). These findings indicated that low body mass and condition factors reduce the relative bear load and moving resistance that causes high swimming performance in male?G. affinis. High contents of energy substances and low rate of consumption of lipids result in stable?Ucrit?in females during hunger.
机译：为了探究雌雄不育球菌之间游泳能力和环境适应能力的差异，我们评估了爆发游泳速度（Uburst），临界游泳速度（Ucrit）及其相关鳍片面积以及运动后能量物质消耗的差异。饥饿分别在0、15、30、45和60天（对照组）。结果表明，雄性和雌性G的胸鳍和尾鳍面积没有显着差异。仿射。然而，对照组女性的干重，条件因子以及糖原，脂质和蛋白质的绝对含量显着升高（P <0.05），而“ Uburst”和“ Ucrit”显着较低（P <0.05）。 。饥饿60天后，雌性动物的脂质消耗率显着降低（P <0.05）。尽管“饥饿”和“饥饿”随饥饿时间的增加而线性降低，但“饥饿”与饥饿时间之间的线性方程系数明显低于男性（P <0.05）。这些发现表明，低体重和身体状况因素会降低相对压力负荷和运动阻力，从而导致雄性G高游泳性能。仿射。高能量物质含量和低脂质消耗率导致女性在饥饿期间稳定的“ Ucrit”。

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