A New Species of Heterosentis Van Cleave, 1931 (Acanthocephala, Arhythmacanthidae), a Parasite of Pinguipedid Fishes in the Southwest Atlantic

Abstract A new species of arhythmacanthid acanthocephalan, Heterosentis martini n. sp., parasitic in the Argentinean sandperch Pseudopercis semifasciata (Cuvier) (Perciformes, Pinguipedidae) from the coasts of Argentina is described. Heterosentis martini n. sp. differs from all congeneric species by having 10 longitudinal rows of hooks in the proboscis, each with 7–8 hooks, consisting of 1 medium apical and 3 larger sub-apical hooks with root, and 3–4 smaller, basal, curved hooks with rudimentary roots and spines in both ventral and dorsal regions of the body. The most similar species, Heterosentis heteracanthus (Linstow, 1896) Van Cleave, 1931, and Heterosentis brasiliensis Vieira, Felizardo and Luque, 2009, also have 10 longitudinal rows of hooks, but H. heteracanthus differs from the new species by having only 3–5 (more frequently 4) hooks in each row, with only the anterior hook large and bearing a developed root. Heterosentis brasiliensis differs from the new species by possessing 2 sub-apical hooks in each row (instead of 3), similar body length but shorter proboscis, and trunk spines restricted to the ventral surface of body.

• Publication year

  2011

• Venue

  Journal of Parasitology

• Publication date

  2011-02-24

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1645/GE-2507.1PMID 21348616
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

• Similarity in parasite communities of the teleost fish Pinguipes brasilianus in the southwestern Atlantic: infracommunities as a tool to detect geographical patterns.

  2010cited by this paper
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  2009influential reference
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  2009cited by this paper
• Seasonal stability and spatial variability of parasites in Brazilian sandperch Pinguipes brasilianus from the Northern Argentine Sea: evidence for stock discrimination.

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  1999influential reference
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  1984influential reference
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