Present knowledge of grey seals (<i>Halichoerus grypus</i>) in Faroese waters
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چکیده
منابع مشابه
Herpesvirus infections in seals: a summary of present knowledge.
This review summarises the occurrence of herpesvirus infections in pinnipeds and data from investigations carried out by the authors. These data demonstrate that herpesvirus isolates collected from harbour seals (Phoca vitulina Linnaeus, 1758) during the 1988 seal epidemic were almost indistinguishable from feline herpesvirus 1 and that Antarctic Weddell's seals (Leptonychotes weddelli Lesson, ...
متن کاملSpatial Overlap of Grey Seals and Fisheries in Irish Waters, Some New Insights Using Telemetry Technology and VMS
Seals and humans often target the same food resource, leading to competition. This is of mounting concern with fish stocks in global decline. Grey seals were tracked from southeast Ireland, an area of mixed demersal and pelagic fisheries, and overlap with fisheries on the Celtic Shelf and Irish Sea was assessed. Overall, there was low overlap between the tagged seals and fisheries. However, whe...
متن کاملHabitat-Mediated Dive Behavior in Free-Ranging Grey Seals
Understanding the links between foraging behaviour and habitat use of key species is essential to addressing fundamental questions about trophic interactions and ecosystem functioning. Eight female grey seals (Halichoerus grypus) were equipped with time-depth recorders linked to Fastloc GPS tags following the annual moult in southwest Ireland. Individual dives were coupled with environmental co...
متن کاملMHC genotype and near-deterministic mortality in grey seals
The Major Histocompatability Complex (MHC) is one of the best known and best characterised components of the immune system, yet its functions remain somewhat enigmatic, including both anti-pathogen activity and kin recognition. To explore the importance of the MHC relative to literally hundreds of other components of the immune system, we compared MHC genotype frequencies between pups and adult...
متن کاملCardiac responses of grey seals during diving at sea.
Heart rate, swimming speed and diving depth data were collected from free-ranging grey seals, Halichoerus grypus, as they foraged and travelled in the sea around the Hebrides Islands off western Scotland. Information was collected on a tracking yacht using a combination of sonic and radio telemetry. Diving heart rate declined as a function of dive duration. In long dives, grey seals employed ex...
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ژورنال
عنوان ژورنال: NAMMCO Scientific Publications
سال: 2007
ISSN: 2309-2491,1560-2206
DOI: 10.7557/3.2724