Earlier pupping in harbour seals, Phoca vitulina

Biology Letters

Volumn 6, Issue 6, 2010, Pages 854-857

  Reijnders, Peter J H ^a   Brasseur, Sophie M J M ^a   Meesters, Erik H W G ^a  

^a WAGENINGEN UNIVERSITY   (Netherlands)

Author keywords

Fisheries impact; Forage base; Pupping phenology; Seals

Indexed keywords

ANNUAL VARIATION; DEMOGRAPHY; EMBRYONIC DEVELOPMENT; ENVIRONMENTAL CONDITIONS; FISH; FORAGING BEHAVIOR; HARBOR; LIFE HISTORY TRAIT; OVERFISHING; PHENOLOGY; PINNIPED; REPRODUCTIVE CYCLE; SIZE STRUCTURE;

ATLANTIC OCEAN; NORTH SEA; WADDEN SEA;

PHOCA VITULINA; PISCES;

EID: 78649806740     PISSN: 17449561     EISSN: 1744957X     Source Type: Journal    
DOI: 10.1098/rsbl.2010.0468     Document Type: Article

References (22)

1. Atkinson, S. 1997 Reproductive biology of seals. Rev. Reprod. 2, 175-194. (doi:10.1530/ror.0.0020175) (Pubitemid 27416910)
2. Bowen, W. D., Ellis, S. L., Iverson, S. J. & Boness, D. J. 2003 Maternal and newborn life-history traits during periods of contrasting population trends: implications for explaining the decline of harbour seals (Phoca vitulina), on Sable Island. J. Zool. (Lond.) 261, 155-163.
3. Boyd, I. L. 1984 The relation between body condition and the timing of implantation in pregnant grey seals (Halichoerus grypus). J. Zool. (Lond.) 203, 113-123. (doi:10.1111/j.1469-7998.1984.tb06048.x)
4. Boyd, I. L. 1991 Environmental and physiological factors controlling the reproductive cycles of pinnipeds. Can. J. Zool. 69, 1135-1148. (doi:10.1139/z91-162)
5. Boyd, I. L. 1996 Individual variation in the duration of pregnancy and birth date in Antarctic fur seals: the role of environment, age, and sex of fetus. J. Mammal. 77, 124-133. (doi:10.2307/1382714)
6. Brasseur, S. M. J. M., Tulp, I., Reijnders, P. J. H., Smit, C. J., Dijkman, E. M., Cremer, J. S. M., Kotterman, M. J. J. & Meesters, E. H. W. G. 2004 Voedselecologie van de gewone en grijze zeehond in de Nederlandse kustwateren. Alterra Report vol. 905, 116 pp. ISSN 1566 7197.
7. Camphuysen, C. J. 2009 The use of seawatching data to monitor population fluctuations in divers (Gaviidae) in nearshore waters (in Dutch with English summary). Sula 22, 1-24.
8. Daan, N., Gislason, H., Pope, G. J. & Rice, J. C. 2005 Changes in the North Sea fish community: evidence of indirect effects of fishing? ICES J. Mar. Sci. 62, 177-188. (doi:10.1016/j.icesjms.2004.08.020) (Pubitemid 40252802)
9. Härkönen, T., Hårding, K. C. & Lunneryd, S. G. 1999 Ageand sex-specific behaviour in harbour seals Phoca vitulina leads to biased estimates of vital population parameters. J. Appl. Ecol. 36, 825-841. (doi:10.1046/j.1365-2664. 1999.00434.x) (Pubitemid 29523838)
10. Jemison, L. A. & Kelly, B. P. 2001 Pupping phenology and demography of harbour seals (Phoca vitulina richardsi) on Tugidak Island, Alaska. Mar. Mamm. Sci. 17, 585-600. (doi:10.1111/j.1748-7692.2001.tb01006.x)
11. Jennings, S., Greenstreet, S. P. R., Hill, L., Piet, G. J., Pinnegar, J. K. & Warr, K. J. 2002 Long-term trends in the trophic structure of the North Sea fish community: evidence from stable isotope analysis, size-spectra and community metrics. Mar. Biol. 141, 1085-1097.
12. Kovacs, K. M. & Lavigne, D. M. 1986 Maternal investment and neonatal growth in phocid seals. J. Anim. Ecol. 55, 1035-1051.
13. Mellish, J.-A. E., Iverson, S. J. & Bowen, W. D. 1999 Variation in milk production and lactation performance in grey seals and consequences for pups growth and weaning characteristics. Physiol. Biochem. Zool. 72, 677-690. (doi:10.1086/316708) (Pubitemid 30156938)
14. R Development Core Team. 2009 R: a language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing. See http://www. R-project.org.
15. Reijnders, P. J. H. 1986 Reproductive failure in common seals feeding on fish from polluted coastal waters. Nature 324, 456-457. (doi:10.1038/324456a0) (Pubitemid 17184159)
16. Reijnders, P. J. H., Ries, E. H., Tougaard, S., Nørgaard, N., Heidemann, G., Schwarz, J., Vareschi, E. & Traut, I. M. 1997 Population development of harbour seals Phoca vitulina in the Wadden Sea after the 1988 virusepizootic. J. Sea Res. 38, 161-168. (doi:10.1016/S1385- 1101(97)00031-2)
17. Reijnders, P. J. H. et al. 2009 Marine mammals. In Quality status report 2009 (eds H. Marencic & J. de Vlas). Wadden Sea Ecosystems No. 25. See http://www.waddensea- secretariat.org/QSR-2009/index.htm.
18. Reiter, J., Panken, K. J. & LeBoeuf, B. J. 1981 Female competition and reproductive success in northern elephant seals. Anim. Behav. 29, 670-687. (doi:10.1016/S0003- 3472(81)80002-4)
19. Stewart, R. E. A., Stewart, B. E., Lavigne, D. M. & Miller, G. W. 1989 Fetal growth of Northwest Atlantic harp seals, Phoca groenlandica. Can. J. Zool. 67, 2147-2157. (doi:10.1139/z89-305)
20. Temte, J. L. 1994 Photoperiod control of birth timing in the harbour seal (Phoca vitulina). J. Zool. (Lond.) 233, 369-384. (doi:10.1111/j.1469-7998.1994. tb05271.x)
21. Tulp, I., Bolle, L. J. & Rijnsdorp, A. D. 2008 Signals from the shallows: in search of common patterns in long-term trends in Dutch estuarine and coastal fish. J. Sea Res. 60, 54-73. (doi:10.1016/j.seares.2008.04. 004)
22. Wood, S. N. 2006 Generalized additive models: an introduction with R. London, UK: Chapman and Hall/CRC Press.