Geographic distribution, abundance, diet, and body size of invasive pink salmon (Oncorhynchus gorbuscha) in the Norwegian and Barents Seas, and in Norwegian rivers
| Autor: | Beatriz Diaz Pauli, Henrik H Berntsen, Eva B Thorstad, Eydna ì Homrum, Susan Mærsk Lusseau, Vidar Wennevik, Kjell Rong Utne |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Ecology
Invasive species VDP::Zoologiske og botaniske fag: 480 Zoology and botany: 480 [VDP] Aquatic Science Distribution Oceanography Pink salmon Diet Northeast atlantic VDP::Zoology and botany: 480 SDG 14 - Life Below Water Zoologiske og botaniske fag: 480 [VDP] Ecology Evolution Behavior and Systematics |
| Zdroj: | Pauli, B D, Berntsen, H H, Thorstad, E B, Homrum, E, Lusseau, S M, Wennevik, V & Utne, K R 2023, ' Geographic distribution, abundance, diet, and body size of invasive pink salmon ( Oncorhynchus gorbuscha ) in the Norwegian and Barents Seas, and in Norwegian rivers ', ICES Journal of Marine Science, pp. 76-90 . https://doi.org/10.1093/icesjms/fsac224 fsac224 ICES Journal of Marine Science |
| Popis: | We report for the first time the geographic distribution, abundance, diet, and body size of invasive pink salmon (Oncorhynchus gorbuscha) in the Norwegian and Barents Seas and Norwegian coast and rivers. We found that pink salmon have spread throughout the Norwegian Sea and along the Norwegian coast, and abundance increased by several orders of magnitude in 2017, with no signs that it has peaked. Marine pink salmon diet comprised mainly fish larvae, amphipods, and krill, but their relative importance varied with geographic distribution. North of 67.5◦N, Amphipoda, herring, and saithe were more important, while south of 67.5◦N, Euphausiidae and mesopelagic fish abounded. Pink salmon body size was larger in the northern rivers, and to the north of the Norwegian Sea and the Barents Sea, relative to the southern rivers and sea areas. Pink salmon were feeding in the ocean during the winter and spring, and in coastal areas immediately before return to the rivers, but not after they had entered the rivers. There was no geographical pattern in the seasonal timing of river ascent. The geographic pattern in abundance and diet of pink salmon, as reported here, offer a measure of the ecological effect of the invasion. diet, distribution, invasive species, northeast Atlantic, pink salmon. publishedVersion |
| Databáze: | OpenAIRE |
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