Plankton and Benthos Research
Online ISSN : 1882-627X
Print ISSN : 1880-8247
ISSN-L : 1880-8247
Original Papers
First description of developmental processes in Sclerodactyla multipes (Echinodermata: Holothuroidea: Dendrochirotida) from Misaki, Sagami Bay, Japan
Hisanori KohtsukaKohei OguchiYusuke YamanaMasanori Okanishi
ジャーナル フリー

2021 年 16 巻 3 号 p. 228-236


More than 100 individuals of sea cucumber larvae were collected in the Japanese coastal sea of Moroiso, Sagami Bay, Kanagawa Prefecture, central-eastern Japan, in January 2018. Based on an obtained sequence of mitochondrial 16S rRNA gene region of one juvenile, it was identified as Sclerodactyla multipes by BLAST search with 0.3% genetic distance. The developmental process of the S. multipes was observed for three months, in which time, they grew from 250 µm to about 4 mm in length; here they showed distinct tentacles and dermal ossicles. Detailed morphological features of this species were described based on stereomicroscopic, fluorescence and SEM observations for the first time. This is the first description of life history through planktonic larva to juveniles in the family Sclerodactylidae.

© 2021 The Plankton Society of Japan