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Relationships between condition factors, parasite load and paternity in bluegill sunfish, Lepomis macrochirus

机译:大鳍sun鱼Lepomis macrochirus的条件因素,寄生虫负荷和亲子关系之间的关系

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摘要

We examined the relationship between non-polar lipid density, parasite density and paternity of male bluegill sunfish, Lepomis macrochirus, and four condition factors: (1) Fulton's condition factor, K; (2) the relative condition factor, K-n; (3) the relative mass index, W-r; and (4) the residuals from the geometric regression of mass on total length, C. Although the four factors were highly correlated to each other, only K and W-r were significantly correlated with non-polar lipid density, explaining about 40% and 25% of the variation, respectively. K was also the best predictor of parasite density and was significantly correlated with the paternity of nesting males. These data provide support for K as a good indicator of individual energetic state and overall quality during the breeding period and demonstrate the importance of energetic state for understanding reproductive success in bluegill sun.
机译:我们研究了雄性蓝blue翻车鱼,Lepomis macrochirus的非极性脂质密度,寄生虫密度和亲子关系与四个条件因子之间的关系:(1)Fulton条件因子K; (2)相对条件因子K-n; (3)相对质量指数W-r; (4)质量对总长度C的几何回归的残差。尽管这四个因素彼此高度相关,但只有K和Wr与非极性脂质密度显着相关,分别解释了40%和25%的变化分别。钾也是寄生虫密度的最佳预测指标,并且与筑巢雄性的父本显着相关。这些数据为钾提供了支持,可作为繁殖期个体能量状态和总体质量的良好指标,并证明了能量状态对于理解blue鱼繁殖成功的重要性。

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