Systematic Parasitology

, Volume 93, Issue 9, pp 831–846

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

  • Russell Q.-Y. Yong
  • Scott C. Cutmore
  • Terrence L. Miller
  • Nicholas Q.-X. Wee
  • Thomas H. Cribb
Article

DOI: 10.1007/s11230-016-9673-5

Cite this article as:
Yong, R.QY., Cutmore, S.C., Miller, T.L. et al. Syst Parasitol (2016) 93: 831. doi:10.1007/s11230-016-9673-5

Abstract

Two new species of Cardicola Short, 1953 are described from the milkfish, Chanos chanos Forsskål (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 μm 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 µm 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.

Funding information

Funder NameGrant NumberFunding Note
Australian Biological Resources Study
  • RF215-40
Holsworth Wildlife Research Endowment
    Moreton Bay Research Station Scholarship

      Copyright information

      © Springer Science+Business Media Dordrecht 2016

      Authors and Affiliations

      1. 1.School of Biological SciencesThe University of QueenslandBrisbaneAustralia
      2. 2.Centre for Sustainable Tropical Fisheries and Aquaculture, College of Marine and Environmental SciencesJames Cook UniversityCairnsAustralia
      3. 3.Fish Health LaboratoryDepartment of Fisheries Western AustraliaSouth PerthAustralia

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