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dc.contributor.authorLi, Liang
dc.contributor.authorWayland, Matthew Thomas
dc.contributor.authorChen, Hui-Xia
dc.contributor.authorYang, Yue
dc.date.accessioned2018-11-23T00:31:23Z
dc.date.available2018-11-23T00:31:23Z
dc.date.issued2019-03
dc.identifier.issn0031-1820
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/285778
dc.description.abstractThe acanthocephalans are characterized by a retractible proboscis, armed with rows of recurved hooks, which serves as the primary organ for attachment of the adult worm to the intestinal wall of the vertebrate definitive host. Whilst there is a considerable variation in the size, shape and armature of the proboscis across the phylum, intraspecific variation is generally regarded to be minimal. Consequently, subtle differences in proboscis morphology are often used to delimit congeneric species. In this study, striking variability in proboscis morphology was observed among individuals of Neorhadinorhynchus nudus (Harada, 1938) collected from the frigate tuna Auxis thazard Lacépède (Perciformes: Scombridae) in the South China Sea. Based on the length of the proboscis, and number of hooks per longitudinal row, these specimens of N. nudus were readily grouped into three distinct morphotypes, which might be considered separate taxa under the morphospecies concept. However, analysis of nuclear and mitochondrial DNA sequences revealed a level of nucleotide divergence typical of an intraspecific comparison. Moreover, the three morphotypes do not represent three separate genetic lineages. The surprising, and previously undocumented level of intraspecific variation in proboscis morphology found in the present study, underscores the need to use molecular markers for delimiting acanthocephalan species.
dc.format.mediumPrint-Electronic
dc.languageeng
dc.publisherCambridge University Press (CUP)
dc.subjectAnimals
dc.subjectTuna
dc.subjectAcanthocephala
dc.subjectHelminthiasis, Animal
dc.subjectFish Diseases
dc.subjectDNA, Mitochondrial
dc.subjectDNA, Helminth
dc.subjectMicroscopy, Electron, Scanning
dc.subjectBiological Variation, Individual
dc.titleRemarkable morphological variation in the proboscis of Neorhadinorhynchus nudus (Harada, 1938) (Acanthocephala: Echinorhynchida).
dc.typeArticle
prism.endingPage355
prism.issueIdentifier3
prism.publicationDate2019
prism.publicationNameParasitology
prism.startingPage348
prism.volume146
dc.identifier.doi10.17863/CAM.33122
dcterms.dateAccepted2018-08-02
rioxxterms.versionofrecord10.1017/S003118201800166X
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-03
dc.contributor.orcidLi, Liang [0000-0003-2338-1099]
dc.identifier.eissn1469-8161
rioxxterms.typeJournal Article/Review
cam.issuedOnline2018-09-27
rioxxterms.freetoread.startdate2019-09-27


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