Two known and one new species of Proctoeces from Australian teleosts: variable host-specificity for closely related species identified through multi-locus molecular data

Wee, Nicholas Q-X., Cribb, Thomas H., Bray, Rodney A. and Cutmore, Scott C. (2017) Two known and one new species of Proctoeces from Australian teleosts: variable host-specificity for closely related species identified through multi-locus molecular data. Parasitology International, 66 2: 16-26. doi:10.1016/j.parint.2016.11.008

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Author Wee, Nicholas Q-X.
Cribb, Thomas H.
Bray, Rodney A.
Cutmore, Scott C.
Title Two known and one new species of Proctoeces from Australian teleosts: variable host-specificity for closely related species identified through multi-locus molecular data
Formatted title
Two known and one new species of Proctoeces from Australian teleosts: variable host-specificity for closely related species identified through multi-locus molecular data
Journal name Parasitology International   Check publisher's open access policy
ISSN 1873-0329
1383-5769
Publication date 2017-04-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.parint.2016.11.008
Open Access Status File (Author Post-print)
Volume 66
Issue 2
Start page 16
End page 26
Total pages 11
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Collection year 2017
Language eng
Formatted abstract
Species of Proctoeces Odhner, 1911 (Trematoda: Fellodistomidae) have been reported from a wide range of marine animals globally. Members of the genus tend to lack strongly distinguishing morphological features for diagnosis, making identification difficult and the true number of species in the genus contentious. Combined morphological and molecular analyses were used to characterise three species of Proctoeces from Moreton Bay and the southern Great Barrier Reef. Data for two ribosomal regions and one mitochondrial region were generated for specimens collected from Australia. Three unique 18S-genotypes were identified which corresponded to subtle, but reliable, morphological differences. Two species of Proctoeces were identified from fishes of Moreton Bay, Proctoeces insolitus (Nicoll, 1915) Yamaguti, 1953 and P. major Yamaguti, 1934, and a third, P. choerodoni n. sp. from off Heron Island on the southern Great Barrier Reef. Phylogenetic analyses of partial 18S and partial 28S rDNA indicated that these three species differ from the four species reported outside of Australia for which sequence data are available. Phylogenetically, Proctoeces proved to be a reliable concept, with all species of Proctoeces that have been characterised genetically forming a well-supported clade in all analyses. Dramatically different patterns of host-specificity were identified for each of the three Australian species; P. insolitus apparently infects a single species of fish, P. choerodoni n. sp. infects multiple species of a single genus of fish, and P. major infects multiple species of two teleost orders.
Keyword 18S rDNA
28S rDNA
Cox1 mtDNA
Fellodistomidae
Great Barrier Reef
Host-specificity
Moreton Bay
Proctoeces
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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