SC/63/BRG2 Subsistence harvest of bowhead whales (Balaena mysticetus) by Alaskan Eskimos during 2010 1Robert Suydam, 1John C. George, 1Brian Person, 1Cyd Hanns, and 2,3Gay Sheffield 1 Department of Wildlife Management, North Slope Borough, Box 69, Barrow, AK 99723 USA 2 Alaska Department of Fish and Game, Box 1148, Nome, AK 99762 USA 3Present Address: Northwest Campus-UAF, Marine Advisory Program, Box 400, Nome, AK 99762 USA Contact email:
[email protected] ABSTRACT In 2010, 71 bowhead whales (Balaena mysticetus) were struck during the Alaskan subsistence hunt resulting in 45 animals landed. Total landed for 2010 was more than the average over the past 10 years (2000-2009: mean = 39.0; SD = 7.7). The efficiency (# landed / # struck) of the hunt was 63%, which is lower than the prior ten-year average during 2000-2009 (mean = 77%, SD = 7%). Spring hunts are logistically more difficult than autumn hunts because of severe environmental conditions and the sea ice dynamics. Typically, hunt efficiency during spring is lower than autumn. In 2010, the efficiency of the spring hunt (52%) was much lower than the autumn hunt (95%). This was due in part to difficult environmental conditions during spring, unanticipated equipment failures, and that four whales were not retrieved as they sank after they were killed. Bowheads typically float at death and it is not clear whether having a larger number of whales that sank is a signal that the oceanographic conditions or body condition of the whales is changing. Of the landed whales, 23 were females, 20 were males, and sex was not determined for two animals.