File(s) not publicly available
Diet composition and guild structure of mesopelagic and bathypelagic fishes near Macquarie Island, Australia
journal contribution
posted on 2023-05-16, 13:10 authored by Gaskett, AC, Bulman, CM, He, X, Goldsworthy, SDMesopelagic (200-1000 m) and bathypelagic ( > 1000 m) fish near Macquarie Island, Australia, are important in the diets of seals, seabirds, and Patagonian toothfish. They also form important links between the productivity at shallow and deeper water depths. Here we analyse the diets of 23 fish species, 13 of which are from the family Myctophidae from 254 stomach samples. Crustaceans (particularly copepods, amphipods, and euphausiids) were the dominant prey in 18 species. Fishes were the dominant prey in five species. Further analysis showed that five of the 13 myctophid fishes bad a low level of similarity in diet composition between individuals of each species, whereas the other eight species had significantly high levels of similarity. Cluster analysis and randomisation procedures suggested the existence of five trophic guilds among the Myctophidae.
History
Publication title
New Zealand Journal of Marine and Freshwater ResearchVolume
35Pagination
469-476ISSN
0028-8330Department/School
Institute for Marine and Antarctic StudiesPublisher
SIR PublishingPlace of publication
New ZealandRepository Status
- Restricted