ABSTRACT

Fourteen morphotypes of the Aden nerite (Nerita adenensis) from Chabahar Bay, the northern Gulf of Oman, were sequenced for mitochondrial cytochrome c oxidase I and nuclear ATPSα genes. COI sequences across all morphotypes yielded uncorrected intraspecific genetic distances (p) of between 0.013 and 0.017, whereas interspecific p was 0.11–0.16 among congeneric species. For ATPSα, across all morphotypes, p was 0.00–0.03, whereas between N. adenensis and congeneric species, p was 0.07–0.19. Morphological analysis revealed a high degree of plasticity in shell colour, pattern and structure, while characters of the operculum and crenulations on the outer lip were more stable. Our descriptions provided here will be helpful in identifying this problematic taxon, which our genetic analyses show is best regarded as a single variable biological species.

摘要

对来自阿曼北部海湾查巴哈尔湾的亚丁nerite（Nerita adenensis）的十四个形态型进行了线粒体细胞色素C氧化酶I和核ATPSα基因测序。跨所有形态型的COI序列产生的未校正种内遗传距离（p）在0.013至0.017之间，而同属种间的种间p为0.11-0.16。对于ATPSα，在所有形态型中，p为0.00–0.03，而在亚种猪笼草和同类动物之间，p为0.07–0.19。形态学分析显示，壳的颜色，样式和结构具有高度可塑性，而外唇的盖和齿状突起的特征更稳定。我们在此处提供的描述将有助于识别此有问题的分类单元，我们的遗传分析表明该分类单元最好被视为单一可变生物物种。