A complex of Cardicola Short, 1953 (Digenea: Aporocotylidae) species infecting the milkfish Chanos chanos Forsskål(Gonorynchiformes), with descriptions of two new species

Yong, Russell Q.-Y., Cutmore, Scott C., Miller, Terrence L., Wee, Nicholas Q.-X., and Cribb, Thomas H. (2016) A complex of Cardicola Short, 1953 (Digenea: Aporocotylidae) species infecting the milkfish Chanos chanos Forsskål(Gonorynchiformes), with descriptions of two new species. Systematic Parasitology, 93 (9). pp. 831-846.

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Abstract

Two new species of Cardicola Short, 1953 are described from the milkfish, Chanos chanos ForsskAyenl (Gonorynchiformes: Chanidae), obtained from off Lizard Island on the northern Great Barrier Reef (GBR) and North Stradbroke Island in southeast Queensland. These are the first known blood flukes from this order of fishes. Cardicola suni n. sp. differs from all other Cardicola spp. by a combination of a large ovoid oral sucker surrounding a subterminal mouth, recurved tegumental spines up to 16 mu m long, anterior caeca occupying 25.1-31.3% (28.7%) of total body length and a mostly-intercaecal ovary. Cardicola jiigurru n. sp. differs from C. suni n. sp. and all other species of Cardicola by a combination of a narrowly lanceolate body, weakly-muscularised and poorly-demarcated oral sucker, minute tegumental spines < 1 A mu m in length, and anterior caeca occupying 15.9-22.0% (19.4%) of total body length, an almost entirely post-caecal ovary and the male genital pore terminal on a dorsolateral protuberance. A third species, closely resembling C. suni n. sp., was also discovered off Wangetti Beach, north Queensland, but is not described due to lack of material. Molecular phylogenetic analysis, based on both ITS2 and partial 28S rDNA regions, shows that these three species form a clade nested within that formed by existing species of Cardicola.

Item ID: 46507
Item Type: Article (Research - C1)
ISSN: 1573-5192
Funders: Australian Biological Resources Study (ABRS), Holsworth Wildlife Research Endowment, Moreton Bay Research Station research scholarship
Projects and Grants: ABRS National Taxonomy Research Grant RF215-40
Date Deposited: 23 Nov 2016 07:30
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060301 Animal Systematics and Taxonomy @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960803 Documentation of Undescribed Flora and Fauna @ 100%
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