Feeding Interactions between Fishes in a Coastal Ecosystem in the Southern Gulf of St. Lawrence, Atlantic Canada
| Autor: | John Mark Hanson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Atlantic herring biology 010604 marine biology & hydrobiology Pelagic zone Clupea Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Demersal zone Rainbow smelt Fishery Atlantic mackerel White hake Sea raven Ecology Evolution Behavior and Systematics |
| Zdroj: | Transactions of the American Fisheries Society. |
| ISSN: | 1548-8659 0002-8487 |
| DOI: | 10.1080/00028487.2017.1381160 |
| Popis: | For the period 1999–2003, diet composition, diet similarity, and major predator–prey interactions between the 15 most abundant demersal and pelagic fishes (N = 12,163 stomachs) were described for Northumberland Strait - a semienclosed, marine, coastal ecosystem. Of the five pelagic species, Rainbow Smelt Osmerus mordax ate benthic prey (shrimps and polychaetes), Atlantic Herring Clupea harengus and American Shad Alosa sapidissima consumed small copepods and crab zoea, and Atlantic Mackerel Scomber scombrus and Alewife A. pseudoharengus ate small copepods and moderate amounts of benthic prey and small fishes. Three demersal species were strongly piscivorous but with minimal diet overlap: Sea Raven Hemitripterus americanus consumed small benthic fishes (especially flounders); Winter Skate Leucoraja ocellatus consumed sand lance (Ammodytes sp.) and Rainbow Smelt; and White Hake Urophycis tenuis consumed Atlantic Herring and Atlantic Mackerel. Cluster analysis revealed seven feeding guilds of which fo... |
| Databáze: | OpenAIRE |
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