Skip to content

Research at St Andrews

Sex-related differences in the postmolt distribution of Weddell seals (Leptonychotes weddellii) in the southern Weddell Sea

Research output: Contribution to journalArticle

DOI

Open Access permissions

Open

Abstract

The population of Weddell seals (Leptonychotes weddellii) in the southern Weddell Sea is in a unique position on the continental shelf edge, with vast shelf waters to the south, and deep Southern Ocean to the north. We describe sex-related differences in the winter distribution of this population, from data collected by 20 conductivity-temperature-depth satellite relay data loggers deployed in February 2011 at the end of the annual molt. The regional daily speed was calculated, and a state-space model was used to estimate behavioral states to positions along individuals’ tracks. GLMMs estimated that males and smaller individuals, diving in shallower water, traveled less far per day of deployment (males 14.6 ± 2.26 km/d, females 18.9 ± 2.42 km/d), and males were estimated to dive in shallower water (males 604 ± 382 m, females 1,875 ± 1,458 m). Males and smaller individuals were also estimated to be more resident; males spent an average 83.4% ± 7.7% of their time in a resident behavioral state, compared to females at 74.1% ± 7.1%. This evidence that male and female Weddell seals in the southern Weddell Sea are adopting different strategies has not been shown elsewhere along their circumpolar distribution.
Close

Details

Original languageEnglish
Pages (from-to)403-419
Number of pages17
JournalMarine Mammal Science
Volume34
Issue number2
Early online date5 Dec 2017
DOIs
Publication statusPublished - Apr 2018

    Research areas

  • Weddell seal, Leptonychotes weddellii, Postmolt distribution, Sex-related differences, CTD-SRDL, State-space model, Resident state, Weddell Sea

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Variation in the distribution and properties of Circumpolar Deep Water in the eastern Amundsen Sea, on seasonal timescales, using seal-borne tags

    Mallett, H. K. W., Boehme, L., Fedak, M., Heywood, K. J., Stevens, D. P. & Roquet, F., 24 May 2018, In : Geophysical Research Letters. Early View, 9 p.

    Research output: Contribution to journalArticle

  2. In-situ observations using tagged animals

    Roquet, F., Boehme, L., Bester, M., Bornemann, H., Brasseur, S., Charrassin, J-B., Costa, D., Fedak, M. A., Guinet, C., Hall, A. J., Harcourt, R., Hindell, M., Kovacs, K. M., Lea, M-A., Lovell, P., Lowther, A., Lydersen, C., McMahon, C., Picard, B., Reverdin, G. & 1 othersVincent, C., 21 Feb 2017. 5 p.

    Research output: Contribution to conferencePaper

  3. Marine mammals exploring the oceans pole to pole: a review of the MEOP consortium

    Treasure, A., Roquet, F., Ansorge, I. J., Bester, M. N., Boehme, L., Bornemann, H., Charrassin, J-B., Chevallier, D., Costa, D. P., Fedak, M. A., Guinet, C., Hammill, M. O., Harcourt, R. G., Hindell, M. A., Kovacs, K. M., Lea, M-A., Lovell, P., Lowther, A. D., Lydersen, C., McIntyre, T. & 8 othersMcMahon, C. R., Muelbert, M. M. C., Nicholls, K., Picard, B., Reverdin, G., Trites, A. W., Williams, G. D. & de Bruyn, P. J. N., 2017, In : Oceanography. 30, 2, p. 132-138

    Research output: Contribution to journalReview article

  4. Ocean observations using tagged animals

    Roquet, F., Boehme, L., Block, B., Charrasin, J. B., Costa, D., Guinet, C., Harcourt, R. G., Hindell, M. A., Hückstädt, L. A., McMahon, C. R., Woodward, B. & Fedak, M. A., 2017, In : Oceanography. 30, 2, p. 139-139

    Research output: Contribution to journalArticle

  5. Between the devil and the deep blue sea: the role of the Amundsen Sea continental shelf in exchanges between ocean and ice shelves

    Heywood, K., Biddle, L., Boehme, L., Dutrieux, P., Fedak, M. A., Jenkins, A., Jones, R. W., Kaiser, J., Mallett, H., Naveira Garabato, A. C., Renfrew, I. A., Stevens, D. P. & Webber, B. G. M., Dec 2016, In : Oceanography. 29, 4, p. 118-129

    Research output: Contribution to journalArticle

Related by journal

  1. Accuracy and precision of dolphin group size estimates

    Gerrodette, T., Perryman, W. L. & Oedekoven, C. S., Jan 2019, In : Marine Mammal Science. 35, 1, p. 22-39 18 p.

    Research output: Contribution to journalArticle

  2. Breathing synchrony in franciscana (Pontoporia blainvillei) and Guiana dolphins (Sotalia guianensis) in Southern Brazil

    Actis, P. S., Danilewicz, D., Cremer, M. J. & Bortolotto, G. A., Jul 2018, In : Marine Mammal Science. 34, 3, p. 777-789

    Research output: Contribution to journalArticle

  3. Clicks of dwarf sperm whales (Kogia sima)

    Merkens, K., Mann, D., Janik, V. M., Claridge, D., Hill, M. & Oleson, E., 24 Oct 2018, In : Marine Mammal Science. 34, 4, p. 963-978

    Research output: Contribution to journalArticle

  4. Distribution and abundance of beaked whales (Family Ziphiidae) off Cape Hatteras, North Carolina, U.S.A.

    McLellan, W. A., McAlarney, R. J., Cummings, E. W., Read, A. J., Paxton, C. G. M., Bell, J. T. & Pabst, D. A., 30 Mar 2018, In : Marine Mammal Science. 34, 4, p. 997-1017

    Research output: Contribution to journalArticle

  5. Harbor porpoise (Phocoena phocoena) reactions to pingers

    Kindt-Larsen, L., Willestofte Berg, C., Northridge, S. P. & Larsen, F., 2 Nov 2018, In : Marine Mammal Science. Early View

    Research output: Contribution to journalArticle

Related by journal

  1. Marine Mammal Science (Journal)

    Sophie Caroline Smout (Reviewer)
    1 Dec 201730 Dec 2017

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  2. Marine Mammal Science (Journal)

    Nora Nell Hanson (Member of editorial board)
    2017

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  3. Marine Mammal Science (Journal)

    Sophie Caroline Smout (Reviewer)
    Jul 2016 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  4. Marine Mammal Science (Journal)

    Monica Arso Civil (Reviewer)
    20142018

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  5. Marine Mammal Science (Journal)

    Nora Nell Hanson (Reviewer)
    2012 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

ID: 248865290