褐菖鲉发声肌形态的雌雄差异

Morphological differences of sonic muscle between male and female in marbled rockfish Sebastiscus marmoratus

发声肌是褐菖鲉的特殊发声系统,为了更深入了解褐菖鲉发声肌发育,运用解剖方法观察褐菖鲉的发声肌形态,量化对比发声肌长度、质量和个体全长、体质量,进行相关性探究。对比发现:性腺发育前其雄性发声肌质量与体质量呈线性正相关,相关系数R^2=0.8422;性腺发育中其发声肌长度-全长相关系数:雌性,R^2=0.8141,雄性,R^2=0.7575;发声肌质量-体质量相关系数:雌性,R^2=0.6428,雄性,R^2=0.8507,这说明此时发声肌长度和质量与全长、体质量分别成线性正相关,雄性个体发声肌质量-体质量具有高度相关性。性腺发育中的雌性发声肌长度和质量大于发育前,怀卵的雌性个体发声肌发生了萎缩。雄性褐菖鲉性腺发育中与发育前发声肌形态无显著性差异。

The development of the sonice muscles is of great significance for the marbled rockfish,Sebastiscus marmoratus.In order to understand the development of the sonic muscle in the marbled rockfish,this study quantified and compared the size and weight of sonic muscles to the individual body size and weight,and to explore the correlationship between them.The results of the study indicated that there is a linear positive correlation between the weight of vocal muscles and body weight in pre-or early gonadal development male,the correlation coefficient:R^2=0.842 2.In gonadal developmental stages,the sonic muscle length-total length correlation coefficient:female,R^2=0.814 1;male,R^2=0.757 5;weight-weight correlation coefficient:female,R^2=0.642 8;male,R^2=0.850 7,indicating that length and weight of the sonic muscleis linearly positively correlated with the total length and weight,respectively.And the sonic muscle weight-total weight correlation of male individuals is more pronounced than female.In the gonadal mature stage females,the sonic muscle length and body weight were greater than those in the pre-or early gonadal development stage,moreover,the sonic muscles atrophied in fertilized female.There was no significant difference in the morphology of the sonic muscle between the gonadal mature stage and the pre-or early gonadal development stage in males.