Morphological and molecular sequence analysis of the harmful shell boring species of Polydora (Polychaeta: Spionidae) from Japan and Australia

Accurate species identification is required to trace, monitor and limit the distribution of harmful shell boring species of the genus Polydora, which have been transported worldwide accompanying commercially important mollusk species. Morphological identification of species in the polydorid complex...

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Bibliographic Details
Published inAquaculture Vol. 368-369; pp. 40 - 47
Main Authors Sato-Okoshi, W., Abe, H.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 24.11.2012
Elsevier Sequoia S.A
Subjects
18S rRNA gene
Aquaculture
Identification
Marine
Mollusca
Molluskan aquaculture
Mollusks
Polychaeta
Polydora
Polydora aura
Polydora brevipalpa
Polydora uncinata
Ribonucleic acid
RNA
Spionidae
Australia
Japan
INW, Japan
Polydora aura
Spionidae
Polydora uncinata
18S rRNA gene
Polydora brevipalpa
Molluskan aquaculture
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Summary:Accurate species identification is required to trace, monitor and limit the distribution of harmful shell boring species of the genus Polydora, which have been transported worldwide accompanying commercially important mollusk species. Morphological identification of species in the polydorid complex is difficult because of close similarities, therefore, nuclear 18S rRNA gene sequences were used for the first time to distinguish among the three serious aquaculture pests Polydora brevipalpa, Polydora uncinata, and Polydora aura, from Japan and Australia. The analysis revealed new intraspecific pigmentation variation and confirmed that P. uncinata and P. aura are closely related, possessing special notochaetae on the posterior chaetigers, while P. brevipalpa is a sister taxon to these two species. Polydora brevipalpa and P. uncinata share characteristic black-bar pigmentation on their palps, but they apparently are not part of the same clade. ► We described morphology and molecular information of three harmful shell borers. ► The nuclear 18S rRNA gene sequences of borers were determined for the first time. ► P. brevipalpa and P. uncinata showed invariant black-bars pigmentation on palps. ► P. uncinata and P. aura made one and P. brevipalpa the other in phylogenetic tree.
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ISSN:0044-8486
1873-5622
DOI:10.1016/j.aquaculture.2012.08.046