Movements and Spatial Use of Odontocetes in the Western Main Hawaiian Islands: Results from Satellite-Tagging and Photo-Identification off Kaua'i and Ni'ihau in July/August 2011.
Download
Author
Baird, Robin W.
Webster, Daniel L.
Aschettino, Jessica M.
Schorr, Gregory
Mahaffy, Sabre D.
Gorgone, Antoinette M.
Date
2012-09Metadata
Show full item recordAbstract
This report summarizes the second year of a three-year effort in the western main Hawaiian Islands to study the residency patterns and
spatial use of odontocetes in the Hawaii Range Complex. Surveys were made off Kaua‘i and Ni‘ihau over eighteen days in July/August
2011, during which time there were 65 encounters with five species of odontocetes. Twenty-four of those encounters were cued by
acoustic detections from the Marine Mammal Monitoring on Navy Ranges (M3R) system from the Pacific Missile Range Facility, thus
providing species verifications of the acoustic system. Additionally, 22645 photographs for individual and species identification, and
forty-eight biopsy samples for genetic analyses, were collected. Some highlights of the field work include: the first ever satellite tag
deployments on free-ranging rough-toothed dolphins, and the first satellite tag deployment in Hawaiian waters of a bottlenose dolphin;
only the second encounter with killer whales in twelve years of surveys in Hawaiian waters; and encounters with a lone pantropical
spotted dolphin, always in association with a group of spinner dolphins, as has been similarly documented in 2004 and 2005. The latter
two highlights suggest, respectively, that there is no resident Hawaiian killer whale population, and that this particular (at least)
pantropical spotted dolphin has a long-term association with spinner dolphins. The first highlight has provided the first unbiased
movement and habitat use data for both rough-toothed and bottlenose dolphins in Hawaiian waters.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.NPS Report Number
NPS-OC-12-003CRRelated items
Showing items related by title, author, creator and subject.
-
Movements and spatial use of odontocetes in the western main Hawaiian Islands: results from satellite-tagging and photo-identification off Kaua‘i and Ni‘ihau in July/August 2011
Baird, Robert W.; Webster, Daniel L.; Schorr, Gregory S.; Aschettino, Jessica M.; Gorgone, Antoinette, M.; Mahaffey, Sabre D. (2012);Although considerable information is available on residency patterns and spatial use of odontocetes in the eastern half of the Hawai‘i Range Complex (HRC), much less is known about odontocetes in the western half of the ... -
Movements and Spatial Use of Odontocetes in the Western Main Hawaiian Islands: Results from Satellite-Tagging and Photo-Identification off Kaua'i and Ni'ihau in July/August 2011.
Baird, Robin W.; Webster, Daniel L.; Schorr, Gregory S.; Aschettino, Jessica M.; Gorgone, Antoinette M.; Mahaffy, Sabre D. (2012-06-07);This report summarizes the second year of a three-year effort in the western main Hawaiian Islands to study the residency patterns and spatial use of odontocetes in the Hawaii Range Complex. Surveys were made off Kaua i ... -
Movements and Spatial Use of Odontocetes in the western Main Hawaiian Islands: Results of a Three-year Study off O‘ahu and Kaua‘i
Baird, Robin W.; Webster, Daniel L.; Mahaffy, Sabre D.; Schorr, Gregory S.; Aschettino, Jessica M.; Gorgone, Antoinette M. (Cascadia Research Collective, 2013-11-08);A long-term assessment of odontocete populations throughout the main Hawaiian Islands has involved small-boat surveys using photo-identification, genetic sampling and satellite tagging, to address questions related to ...