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Morphometric and molecular data of the two digenean species Lasiotocus lizae Liu, 2002 (Monorchiidae) and Paucivitellosus vietnamensis sp. n. (Bivesiculidae) from mullet fish in Tonkin Bay, Vietnam

Published online by Cambridge University Press:  22 June 2016

D.M. Atopkin*
Affiliation:
Institute of Biology and Soil Sciences, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia Department of Cell Biology and Genetics, Far Eastern Federal University, Vladivostok, Russia
V.V. Besprozvannykh
Affiliation:
Institute of Biology and Soil Sciences, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
H.D. Ngo
Affiliation:
Institute of Ecology and Biodiversity, Vietnamese Academy of Sciences and Technology, Hanoi, Vietnam
N. Van Ha
Affiliation:
Institute of Ecology and Biodiversity, Vietnamese Academy of Sciences and Technology, Hanoi, Vietnam
N. Van Tang
Affiliation:
Institute of Ecology and Biodiversity, Vietnamese Academy of Sciences and Technology, Hanoi, Vietnam
A.V. Ermolenko
Affiliation:
Institute of Biology and Soil Sciences, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
A.Y. Beloded
Affiliation:
Institute of Biology and Soil Sciences, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
*
*Fax: +7 4232310193 E-mail: [email protected]

Abstract

Adults of Lasiotocus lizae Liu, 2002 (Monorchiidae) were found in the mullet Liza longimanus (Günther) from Tonkin Bay, near Cat Ba Island, Vietnam. In this region, flukes belonging to the genus Paucivitellosus (Bivesiculudae) were found in Liza subviridis (Valenciennes), Liza engeli (Bleeker) and Valamugil seheli (Forskåi). Results of investigations showed that morphological features of L. lizae (like L. glebulentus Overstreet, 1971) do not meet the criteria of the genus Lasiotocus. In addition, L. lizae is highly differentiated from other species of Lasiotocus from which molecular data were obtained, including L. arrhichostoma Searle, Cutmore et Cribb, 2014 and L. typicum (Nicoll, 1912). Phylogenetic analyses revealed that L. lizae differs considerably from other species of the genus Lasiotocus presented in the GenBank database. We have identified a new species of the genus PaucivitellosusP. vietnamensis sp. n. from L. subviridis, which differs from P. fragilis Coil, Reid et Kuntz, 1965 by metrical and molecular (18S rRNA) data, and from P. hanumanthai Mani, 1989 by metric features. Our results also show considerable molecular differentiation between P. vietnamensis sp. n. and Paucivitellosus spp. recovered from L. engeli and V. seheli in Vietnam.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 2016 

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