华南湍蛙的两性异形❋

摘要

Twelve morphological traits from 161 individuals were measured by digital caliper to analyse the sexual size dimorphism of Amolops ricketti at Gutian Mountain National Natural Reserve in July, 2014. The re-sults showed that all eleven traits ( except for interorbital space) were correlated significantly with snout-vent length. The females were larger than males in snout-vent length, head length, head width, snout length, in-terorbital space and length of lower arm and hand. The growth rate of females′ head width was higher than male individuals′. Interorbital space was of significant difference between males and subadults, and the traits of interorbital space and tibia length were larger in females than subadults.%2014年7月，在浙江开化古田山国家级自然保护区，用数显游标卡尺测量了161只华南湍蛙( Amolops ricketti)个体的头体长等12项形态指标，分析了华南湍蛙的个体大小和两性异形。结果表明，除眼间距外，其余的11个形态特征均与物种的头体长呈显著的相关关系。进一步的分析显示：华南湍蛙雌性成体的头体长、头长、头宽、吻长、眼间距和前臂及手长等形态特征均显著大于雄性成体；雌性成体头宽的生长速率明显快于雄性个体；雄性成体的眼间距与亚成体存在显著差异；而雌性成体则在眼间距和胫长2个形态特征上显著大于亚成体。