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Morphological and molecular characterisation of a new genus and species of acanthocephalan, Tenuisoma tarapungi n. g., n. sp. (Acanthocephala: Polymorphidae) infecting red-billed gulls in New Zealand, with a key to the genera of the Polymorphidae Meyer, 1931

journal contribution
posted on 18.03.2020, 00:00 by B Presswell, JDL Bennett, LR Smales
Acanthocephalans of the family Polymorphidae Meyer, 1931 are cosmopolitan parasites that infect the intestines of fish-eating birds and mammals. Polymorphid acanthocephalans recovered from the intestines of red-billed gulls (Chroicocephalus scopulinus (Forster)) from the Otago coast, New Zealand, although morphologically similar to the genus Arhythmorhynchus Lühe, 1911 nevertheless have a unique molecular profile showing considerable genetic differentation, and are here diagnosed and described as Tenuisoma tarapungi n. g., n. sp. Characters which distinguish T. tarapungi include a very elongate, cylindrical hindtrunk, swollen anterior trunk with a spinose region, a secondary swelling in males only containing the testes, and hypodermal nuclei distributed throughout the length of the trunk. Molecular data (cox1, 18S, 28S) confirm that the representative of the new genus is closest to, but nonetheless strongly divergent from species of Pseudocorynosoma Aznar, Pérez-Ponce de León & Raga, 2006. Immature specimens are described and illustrated, demonstrating the extreme degree of hindtrunk inversion occurring in immature individuals of this species. We provide a key to the genera of the family Polymorphidae. © 2020, Springer Nature B.V.

Funding

Other

History

Volume

97

Issue

1

Start Page

25

End Page

39

Number of Pages

15

eISSN

1573-5192

ISSN

0165-5752

Publisher

Springer Netherlands

Peer Reviewed

Yes

Open Access

No

Acceptance Date

04/12/2019

External Author Affiliations

University of Otago, NZ

Era Eligible

Yes

Journal

Systematic Parasitology

Exports

CQUniversity

Exports