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Molecular and morphological diversity of Heterodesmus Brady and its phylogenetic position within Cypridinidae (Ostracoda)

Citation

Pham, HTM and Tanaka, H and Karanovic, I, Molecular and morphological diversity of Heterodesmus Brady and its phylogenetic position within Cypridinidae (Ostracoda), Zoological Science, 37, (3) pp. 240-254. ISSN 0289-0003 (2020) [Refereed Article]


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DOI: doi:10.2108/zs190118

Abstract

Ostracod genus HeterodesmusBrady, 1866 is known thus far to contain only three species: H. adamsiiBrady, 1866; H. apriculusHiruta, 1992; and H. naviformis (Poulsen, 1962). This genus has been recorded from the Sea of Japan, and the coastal areas of Thailand and Vietnam. The main generic character is the presence of antero-dorsal and postero-dorsal tube-like processes on the rostrum on both valves. The three species mostly differ in the shell lateral projections. Their relationship and the position of Heterodesmus within family Cypridinidae are poorly understood, partly due to the lack of publication of DNA data so far. We study Heterodesmus collected from several localities in the Northwest Pacific, namely Tsushima and Iki Islands in Japan and Maemul Island in Korea. Besides morphological characters, we also use two mitochondrial markers (16S rRNA and mtCOI) and three nuclear regions (18S rRNA, 28S rRNA, and internal transcribed spacer - ITS) in the samples to detect the biodiversity of this genus. Our phylogenetic tree based on molecular data coupled with morphology reveals the presence of two species, H. adamsii and H. apriculus. We report on their morphological variability, molecular diversity, and phylogenetic position within Cypridinidae based on 16S, 28S and 18S rRNAs, and provide a taxonomic key for all living genera of this family. For the first time, we give an overview of the intrageneric and intrafamily DNA distances of the above markers for the entire subclass Myodocopa.

Item Details

Item Type:Refereed Article
Keywords:molecular distance, molecular phylogeny, Myodocopa, Northwest Pacific, taxonomic key
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Molecular Evolution
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
UTAS Author:Karanovic, I (Professor Ivana Karanovic)
ID Code:139671
Year Published:2020
Deposited By:Ecology and Biodiversity
Deposited On:2020-06-25
Last Modified:2020-06-25
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