PDF(Pubmed)
Abstract：
Holothurians of the family Psychropotidae are widely distributed but remain the least studied deep-sea holothurians. On an expedition to the Western Pacific, six psychropotid specimens were collected by the Jiaolong Human Operated Vehicle (HOV). Through morphological examination, four of them were identified as a new species, Benthodytesjiaolongi sp. nov., which was characterized as having minute papillae, a narrow brim, and a terminal anus; and the ossicles were rods and primary crosses. The remaining two specimens were identified as Psychropotesverrucicaudatus Xiao, Gong, Kou & Li, 2019, first recorded at the Kyushu-Palau Ridge. The phylogenetic analysis showed that B.jiaolongi sp. nov. and P.verrucicaudatus were embedded in the clades Benthodytes and Psycheotrephes, respectively, and that Benthodytes was paraphyletic. The new species clustered with Benthodytessanguinolenta and was separated from the clade containing the other Benthodytes species.
摘要：
心理科的Holothurians分布广泛，但仍然是研究最少的深海Holothurians。在西太平洋探险中，蛟龙号人工作业车（HOV）采集了6个嗜冷蛋白标本。通过形态学检查,其中四个被确定为新物种，Benthodytesjiaolongisp.11月。,其特征是有微小的乳头，狭窄的边缘，和末端肛门；小骨是杆状和初级杂交。其余两个标本被鉴定为Xiahod，龚,Kou&Li,2019年，首次记录在九州-帕劳山脊。系统发育分析表明，B.jiaolongisp。11月。并且疣状疟原虫被嵌入在下体和精神病中，分别,而下体是共生的。新物种与Benthodytessanguinolenta聚集在一起，并与包含其他Benthodytes物种的进化枝分开。
