一种新的珊瑚捕食性裸鳃亚目动物（腹足纲：Trinchesiidae科）
A New Species of Predatory Nudibranch (Gastropoda: Trinchesiidae) of the Coral .
作者信息
Hu Juntong, Zhang Yanjie, Xie James Yang, Qiu Jian-Wen
机构信息
Department of Biology, Hong Kong Baptist University, 224 Waterloo Road, Kowloon, Hong Kong, China. E-mail:
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 511458, China.
出版信息
Zool Stud. 2020 Jul 14;59:e30. doi: 10.6620/ZS.2020.59-30. eCollection 2020.
Some nudibranchs are predators of scleractinian corals, but little is known about their diversity. Here we describe sp. nov., the first species of nudibranch that preys on , a structure-forming agariciid species in the South China Sea. This new species has a white body with brown pigmentation on the dorsum and cerata, and exhibits excellent mimicry by matching the colour of its coral host. The nudibranch lays crescent-shaped egg masses on the coral surface, where the embryos develop and hatch in 2-3 weeks. This new species possesses a large number of cerata that are arranged in widely-spaced rows, with each row having one dorsal ceras and zero to several ventral cerata, which distinguishes it from all other congeneric species. A comparison of the mitochondrial and 16S rRNA genes and the nuclear H3 gene between sp. nov. and other spp. found that their interspecific distances are large enough to justify the recognition of the new species.
一些裸鳃亚目动物以石珊瑚为食，但对它们的多样性了解甚少。在此我们描述了南海一种裸鳃亚目动物新物种，它是首个捕食石珊瑚科造礁珊瑚的裸鳃亚目动物。这种新物种身体呈白色，背部和鳃上有褐色色素沉着，通过与珊瑚宿主颜色匹配展现出出色的拟态。裸鳃亚目动物在珊瑚表面产下新月形卵块，胚胎在其中发育并在2至3周内孵化。这种新物种拥有大量鳃，排列成间隔很宽的几排，每排有一个背鳃和零至几个腹鳃，这使其有别于所有其他同属物种。对该裸鳃亚目动物新物种与其他裸鳃亚目物种之间的线粒体细胞色素氧化酶亚基I（COI）基因、16S核糖体RNA（rRNA）基因和核组蛋白H3（H3）基因进行比较发现，它们的种间距离足够大，足以证明该新物种的成立。
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