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Article: Morphological and genetic differentiation of two loliginid squids, Uroteuthis (Photololigo) chinensis and Uroteuthis (Photololigo) edulis (Cephalopoda: Loliginidae), in Asia

TitleMorphological and genetic differentiation of two loliginid squids, Uroteuthis (Photololigo) chinensis and Uroteuthis (Photololigo) edulis (Cephalopoda: Loliginidae), in Asia
Authors
Keywords16S rRNA
COI
Loligo
Morphometrics
MtDNA
Photololigo
Issue Date2009
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembe
Citation
Journal Of Experimental Marine Biology And Ecology, 2009, v. 369 n. 1, p. 22-30 How to Cite?
AbstractThe squids Uroteuthis (Photololigo) edulis and Uroteuthis (Photololigo) chinensis (family Loliginidae) are commercially important fishery species in many coastal regions of Asia. The morphologies of these two squids are very similar, and identification based on morphology has been inadequate. The occurrence of cryptic species in the family Loliginidae has been reported. The widely distributed U. (P.) chinensis and U. (P.) edulis are believed to comprise several cryptic species. In this study, the taxonomic status of the two species in East Asia was elucidated by morphological and genetic analyses. Analysis of U. (P.) chinensis from Hong Kong and Xiamen (China) and U. (P.) edulis from Yamaguchi (Japan) and Shanghai (China) was performed in order to determine the effectiveness of different morphometric variables in discriminating between the two species. Multivariate analysis of 27 morphometric indices revealed no new morphological characters for the taxonomic identification of the two taxa, which can be distinguished by the teeth shape and number on arm sucker rings, and the percentage of hectocotylized part of left arm IV of males. The morphometric differences between U. (P.) edulis individuals from the two localities is most probably due to differences in the maturity stages of the sampled individuals between the two localities. Genetic analysis based on the mitochondrial COI and 16S rRNA genes revealed a high divergence of 15.5% and 7.5% respectively, indicating that U. (P.) edulis and U. (P.) chinensis are distinct species. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/127425
ISSN
2015 Impact Factor: 1.796
2015 SCImago Journal Rankings: 1.029
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council, Hong Kong SARHKU 7613/05M
Funding Information:

The authors would like to thank Prof. F. X. Li (Xiamen University) and Dr. Natsumi Kaneko (University of the Ryukyus) for collecting some of the samples. We are also grateful for comments from Dr. C. K. Wong and Dr. D.J. Wilmshurst (both of The Chinese University of Hong Kong) on the manuscript. This study was fully supported by a grant from the Research Grants Council, Hong Kong SAR (HKU 7613/05M).

References

 

DC FieldValueLanguage
dc.contributor.authorSin, YWen_HK
dc.contributor.authorYau, Cen_HK
dc.contributor.authorChu, KHen_HK
dc.date.accessioned2010-10-31T13:24:53Z-
dc.date.available2010-10-31T13:24:53Z-
dc.date.issued2009en_HK
dc.identifier.citationJournal Of Experimental Marine Biology And Ecology, 2009, v. 369 n. 1, p. 22-30en_HK
dc.identifier.issn0022-0981en_HK
dc.identifier.urihttp://hdl.handle.net/10722/127425-
dc.description.abstractThe squids Uroteuthis (Photololigo) edulis and Uroteuthis (Photololigo) chinensis (family Loliginidae) are commercially important fishery species in many coastal regions of Asia. The morphologies of these two squids are very similar, and identification based on morphology has been inadequate. The occurrence of cryptic species in the family Loliginidae has been reported. The widely distributed U. (P.) chinensis and U. (P.) edulis are believed to comprise several cryptic species. In this study, the taxonomic status of the two species in East Asia was elucidated by morphological and genetic analyses. Analysis of U. (P.) chinensis from Hong Kong and Xiamen (China) and U. (P.) edulis from Yamaguchi (Japan) and Shanghai (China) was performed in order to determine the effectiveness of different morphometric variables in discriminating between the two species. Multivariate analysis of 27 morphometric indices revealed no new morphological characters for the taxonomic identification of the two taxa, which can be distinguished by the teeth shape and number on arm sucker rings, and the percentage of hectocotylized part of left arm IV of males. The morphometric differences between U. (P.) edulis individuals from the two localities is most probably due to differences in the maturity stages of the sampled individuals between the two localities. Genetic analysis based on the mitochondrial COI and 16S rRNA genes revealed a high divergence of 15.5% and 7.5% respectively, indicating that U. (P.) edulis and U. (P.) chinensis are distinct species. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembeen_HK
dc.relation.ispartofJournal of Experimental Marine Biology and Ecologyen_HK
dc.subject16S rRNAen_HK
dc.subjectCOIen_HK
dc.subjectLoligoen_HK
dc.subjectMorphometricsen_HK
dc.subjectMtDNAen_HK
dc.subjectPhotololigoen_HK
dc.titleMorphological and genetic differentiation of two loliginid squids, Uroteuthis (Photololigo) chinensis and Uroteuthis (Photololigo) edulis (Cephalopoda: Loliginidae), in Asiaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-0981&volume=369&spage=22&epage=30&date=2009&atitle=Morphological+and+genetic+differentiation+of+two+loliginid+squids,+Uroteuthis+(Photololigo)+chinensis+and+Uroteuthis+(Photololigo)+edulis+(Cephalopoda:+Loliginidae),+in+Asiaen_HK
dc.identifier.emailYau, C: cynthia-yau@hkucc.hku.hken_HK
dc.identifier.authorityYau, C=rp00829en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jembe.2008.10.029en_HK
dc.identifier.scopuseid_2-s2.0-58549100245en_HK
dc.identifier.hkuros181407en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-58549100245&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume369en_HK
dc.identifier.issue1en_HK
dc.identifier.spage22en_HK
dc.identifier.epage30en_HK
dc.identifier.isiWOS:000263628100004-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridSin, YW=23096308300en_HK
dc.identifier.scopusauthoridYau, C=7007038452en_HK
dc.identifier.scopusauthoridChu, KH=7402453508en_HK

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