Thorny-headed worms

Echinorhynchus lesteri n. sp. (Acanthocephala: Echinorhynchidae) parasitic in the intestine of the orange roughy Hoplostethus atlanticus

Publication Type:Journal Article
Year of Publication:2012
Authors:L. R. Smales
Journal:Transactions of the Royal Society of South AustraliaTrans. R. Soc. S. Aust.
Pagination:50 - 55
Date Published:2012///
ISBN Number:03721426 (ISSN)
Keywords:Acanthocephala, Echinorhynchidae, Echinorhynchus, Echinorhynchus lesteri, fish, Great Australian Bight, Hoplostethus atlanticus, N.sp., Tasmania, Threatened species

Echinorhynchus lesteri (Acanthocephala: Echinorhynchidae) is described from the intestine of the deep-sea fish, the orange roughy Hoplostethus atlanticus Collett 1889, from the waters of western Tasmania and the Great Australian Bight. The new species can be distinguished from all congeners by a proboscis armature of 14-16 rows of 14 hooks. Echinorhynchus jacundus Travassos, 1923 with 16-17 rows of 14 hooks and is. salobrensis Machado, 1941 with 16-17 rows of 12-14 hooks were the most similar but differed in the sizes of hooks, proboscides and lemnisci. All other species of Echinorhynchus with similar armature differed as follows: those with 14-16 rows of hooks did not have 14 hooks per row and those withl4 hooks per row did not havel4-16 rows of hooks. Since the Australian and New Zealand populations of the orange roughy are now listed as threatened perhaps E. lesteri could also be considered a threatened species.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith