Stomach Contents and Giant Trematodes from Wahoo, Acanthocybium Solanderi, Collected Along the South Atlantic and Gulf Coasts of the United States
Abstract:Stomachs of 885 wahoo, Acanthocybium solanderi, collected along the southeastern Atlantic and Gulf of Mexico coasts of the United States from 1965–1981 were examined for food contents and parasites. Approximately 53% of the stomachs contained food consisting primarily of pelagic fishes and squids. Frigate mackerel, Auxis thazard, porcupinefish, Diodon hystrix, and flyingfish, Cypselurus sp., occurred most frequently. There were only slight differences between the diets of wahoo collected from the Gulf of Mexico and from the southeastern United States. Unlike several sympatric species, wahoo did not eat small items, nor did they feed as readily at the surface. No relationship was found between the size of wahoo and the size of prey. Giant digenetic trematodes, tentatively identified as Hirudinella ventricosa, were found in 80.5% of the stomachs (x = 2 parasites/fish). Size and sex of the host had no significant effect on parasitic infestation; geographical area of collection did.
Document Type: Research Article
Publication date: 1983-04-01
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