Show simple item record

dc.contributor.authorStraley, Janice M.
dc.contributor.authorSchorr, G. S.
dc.contributor.authorThode, A. M.
dc.contributor.authorCalambokidis, J.
dc.contributor.authorLunsford, C. R.
dc.contributor.authorChenoweth, Ellen M.
dc.contributor.authorO'Connell, V. M.
dc.contributor.authorAndrews, R. D.
dc.date.accessioned2021-04-05T22:32:03Z
dc.date.available2021-04-05T22:32:03Z
dc.date.issued2014-05-08
dc.identifier.citationStraley, J. M., Schorr, G. S., Thode, A. M., Calambokidis, J., Lunsford, C. R., Chenoweth, E. M., ... & Andrews, R. D. (2014). Depredating sperm whales in the Gulf of Alaska: local habitat use and long distance movements across putative population boundaries. Endangered Species Research, 24(2), 125-135.en_US
dc.identifier.issn1613-4796
dc.identifier.urihttp://hdl.handle.net/11122/11918
dc.description.abstractSatellite tags were attached to 10 sperm whales Physeter macrocephalus (1 whale was tagged in 2 different years) to determine the movements of sperm whales involved in removal of sablefish from longline fishing gear in the Gulf of Alaska (GOA). Tags transmitted from 3 to 34 d (median = 22) in 2007 and 7 to 158 d (median = 45) in 2009. Seven whales stayed in the GOA; all were associating with fishing vessels along the slope. Two whales headed south in June shortly after being tagged; one reached the inner third of the Sea of Cortez; the other’s last location was offshore Mexico at 14°N. A third whale stayed in the GOA until October and then headed south, reaching central Baja, Mexico, 158 d after tagging. The whales that travelled to lower latitudes followed no pattern in timing of departure, and at least 2 had different destinations. All whales passed through the California Current without stopping and did not travel to Hawaii; both are areas with known concentrations of sperm whales. Whales travelled faster when south of 56°N than when foraging in the GOA (median rate of median horizontal movement = 5.4 [range: 4.1 to 5.5] and 1.3 [range: 0.6 to 2.5] km h−1, respectively). Tagged sperm whales primarily travelled over the slope, but one spent considerable time over the ocean basin. Information on the timing and movement patterns of sperm whales may provide a means for fishermen to avoid fishing at whale hot spots, potentially reducing interactions between whales and fishermen.en_US
dc.description.sponsorshipAcknowledgements. The authors thank Jennifer Cedarleaf, Lauren Wild, Delphine Mathias, Nellie Warner, Kendall Folkert and the crew of the F/V Cobra, and the crews of the F/V Ocean Prowler and Alaskan Leader for their assistance, and Sarah Mesnick for sharing results of ongoing genetic studies. Funding was provided by North Pacific Research Board, NOAA Fisheries TSMRI Auke Bay Lab sablefish assessment program, and NOAA grants to the Alaska Fisheries Science Center and Alaska Sea Life Center. Katy Echave created the wonderful maps of the locations of sperm whales. Hal Whitehead provided a thoughtful review of the manuscript and added details on what is known about the social structure of males. Three reviewers provided insightful comments. Improvements to the tagging methods were funded by Office of Naval Research Grant N000140811203. Activities were authorized under NOAA MMPA Scientific Research Permits 473-1700-01 and 02 and University of Alaska IACUC 08-07 permit issued to J. Straley.en_US
dc.language.isoen_USen_US
dc.publisherInter-Research Science Publisheren_US
dc.sourceEndangered Species Researchen_US
dc.subjectSperm whalesen_US
dc.subjectSatellite tagsen_US
dc.subjectShelfen_US
dc.subjectSlopeen_US
dc.subjectOcean basinen_US
dc.subjectRate of horizontal movementen_US
dc.subjectDemersal longlinesen_US
dc.subjectDepredationen_US
dc.titleDepredating sperm whales in the Gulf of Alaska: local habitat use and long distance movements across putative population boundariesen_US
dc.typeArticleen_US
dc.description.peerreviewYesen_US
refterms.dateFOA2021-04-05T22:32:03Z
dc.identifier.journalEndangered Species Researchen_US


Files in this item

Thumbnail
Name:
2014_Straley_Depredating sperm ...
Size:
838.1Kb
Format:
PDF
Description:
Article

This item appears in the following Collection(s)

Show simple item record