Jenssen, Bjørn Munro; Åsmul, Jill Ina; Ekker, Morten; Vongraven, Dag (2010): Age, body mass, mass change and dispersal distance of suckling and weaned grey seal (Halichoerus grypus) pups [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.811713, Supplement to: Jenssen, BM et al. (2010): To go for a swim or not? Consequences of neonatal aquatic dispersal behaviour for growth in grey seal pups. Animal Behaviour, 80(4), 667-673, https://doi.org/10.1016/j.anbehav.2010.06.028
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Grey seal, Halichoerus grypus, pups in the breeding colony at Froan, Norway, have a bimodal pattern of early aquatic behaviour. About 40% of the pups spend their time ashore to save energy, which can be allocated to growth or deposition of energy-rich adipose tissue. The other 60% of the pups enter the sea during suckling and the early postweaning period, and disperse to other locations within the breeding colony. Pups may swim distances up to 12 km. Neonatal aquatic dispersal behaviour may lead to increased energy expenditure for thermoregulation and swimming, and thus lead to a low rate of body mass gain during suckling and a high rate of body mass loss after weaning. Thus, we examined relationships between natal aquatic dispersal behaviour and change in body mass (DeltaBM) in suckling and weaned pups. Suckling pups that had dispersed >2000 m had a significantly lower DBM than suckling pups that dispersed <2000 m or that did not disperse. In weaned pups, there were no effects of aquatic dispersal behaviour on DBM. We suggest that the bimodal natal aquatic dispersal behaviour in grey seals at the study site reflects two different strategies for postweaning survival: to stay ashore and get fat, or to take a swim and acquire diving and feeding skills.
Project(s):
Coverage:
Latitude: 64.050000 * Longitude: 9.190000
Event(s):
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
Download Data
Datasets listed in this publication series
- Jenssen, BM; Åsmul, JI; Ekker, M et al. (2010): (Table 3) Age and body mass of suckling grey seal (Halichoerus grypus) pups at first and second capture. https://doi.org/10.1594/PANGAEA.811711
- Jenssen, BM; Åsmul, JI; Ekker, M et al. (2010): (Table 4) Age and body mass of weaned grey seal (Halichoerus grypus) pups at first and second capture. https://doi.org/10.1594/PANGAEA.811712
- Jenssen, BM; Åsmul, JI; Ekker, M et al. (2010): (Table 2) Daily body mass change and dispersal distance in suckling and weaned grey seal (Halichoerus grypus) pups. https://doi.org/10.1594/PANGAEA.811710