A new interstitial ostracod species of the genus Paracobanocythere from Vietnam, with mitochondrial CO1 sequence data of three Asian species

By

Tanaka, Hayato
Dung, Le Doan
Higashi, Ryouichi
Tsukagoshi, Akira

Type

Article

Date of Publication

2016

Original Publication

ZooKeys

Volume

559

Pages

17-33

Subjects

DNA barcode , Interstitial animals , meiofauna , Southeast Asia

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.559.6751

 

Abstract

This study is a first report of an interstitial ostracod from Southeast Asia. The ostracod species, Paracobanocythere vietnamensis sp. n., was found in the marine interstitial environment of Phu Quoc Island, Vietnam. Thus far, three species of this genus have been described. The morphology of the carapace as well as the appendages of this new species are quite similar to P. hawaiiensis and P. watanabei. However, we found that they could be easily distinguished according to the morphology of the male copulatory organ. Additionally, we estimated the evolutionary distances among these three species based on nucleotide and amino acid sequences of the mitochondrial CO1 gene. Similar morphologies of carapaces and appendages, and relatively small evolutionary distances according to CO1 between P. vietnamensis sp. n. and P. watanabei suggest that these two species are very closely related.