Distant feeding and associations with cetaceans of gannets Morus bassanus from the Bass Rock, May 1994
Camphuysen, C.J.; Heessen, H.J.L.; Winter, C.J.N. (1995). Distant feeding and associations with cetaceans of gannets Morus bassanus from the Bass Rock, May 1994. Seabird 17: 36-43
In: Seabird. The Seabird Group: Sandy. ISSN 0267-9310, meer
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| Trefwoorden |
Aquatic organisms > Marine organisms > Aquatic birds > Marine birds
Aquatic organisms > Marine organisms > Aquatic mammals > Marine mammals
Behavior > Feeding behavior
Ecological associations
Interspecific relationships
Movements
Lagenorhynchus Gray, 1846 [WoRMS]; Morus bassanus (Linnaeus, 1758) [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Camphuysen, C.J., meer
- Heessen, H.J.L., meer
- Winter, C.J.N.
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| Abstract |
The feeding range of breeding Gannets Morus bassanus, deduced from the time spent away from the nest and a known flight speed, has been estimated at 320-480 km. In contrast, on the basis of ship-based surveys in the North Sea, Tasker et al. (1985) concluded that fishing trips rarely exceed 150 km from the colony and that most are well below one-third of that distance. A ship-based survey in the North Sea in May 1994 showed that mass feedings of Gannets, white-beaked dolphins Lagenorhynchus albirostris and white-sided dolphins L. acutus occurred at the Dogger Bank in the central North Sea. The feeding movements of Gannets found in May 1994 were reconstructed and analysed, in order to determine the origin of the Gannets. Feeding behaviour, group size, presence and feeding success at fishing vessels, prey and associations with cetaceans are described. |
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