The effects of periodic eutrophication on parasitism and stock identification of Trematomus bernacchii (Pisces: Nototheniidae) in McMurdo Sound, Antarctica

M. Moser, R. K. Cowen

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

McMurdo Sound, Antarctica, is suited for the study of the effects of eutrophication on diet-related parasites of Trematomus bernacchii (Boulenger, 1902) (Pisces). It has been relatively well studied, the environment is predictable, and there are significant differences in primary productivity over small distances. The differences in parasitism for 5 helminth species can be attributed to the enrichment processes in the sound. The prevalences of the acanthocephalan Echinorhynchus sp., the nematode Ascarophis nototheniae, the digenean Dinosoma sp., and the cestode Phyllobothrium sp. are significantly higher on the east side of the sound than on the west. The prevalence of the digenean Lepidepedon garrardi was significantly higher on the west side. We believe that the differences in the prevalences of infection between the east and west sides suggest that at least the benthic, adult fish do not readily move from one side of the sound to the other. We report the following (new host records are marked by asterisks): Echinorhynchus sp., Corynosoma hamanni (Acanthocephala); Phyllobothrium sp.*, Diphyllobothrium sp.*, Trypanorhyncha (Cestoidea); Clavellopsis tomoi (Cepepoda); Dinosoma sp.*, Lepidepedon garrardi (Digenea); Pseudobenedenoides brachicola, Polyopisthocotylea* (Monogenea); Contracaecum sp., Ascarophis nototheniae (Nematoda); Myxoproteus sp.*, Henneguya sp.*, Ceratomyxa sp.*, and Zschokkella sp.* (Protozoa).

Original languageEnglish (US)
Pages (from-to)551-556
Number of pages6
JournalJournal of Parasitology
Volume77
Issue number4
DOIs
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Parasitology
  • Ecology, Evolution, Behavior and Systematics

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