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Daniela Maldini, Ph.D. Director of Research Pacific Whale Foundation.

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Presentation on theme: "Daniela Maldini, Ph.D. Director of Research Pacific Whale Foundation."— Presentation transcript:

1 Daniela Maldini, Ph.D. Director of Research Pacific Whale Foundation

2 False killer whale Pseudorca crassidens Length: 11.5 – 19.5 ft (females up to 15 ft) Weight: avg. 1,500 lb Gestation: months Lactation: years Calving intervals: 7 yrs Life span: male 58 yrs, female 63 yrs

3 Why is it called False Killer Whale? 7U-12L 10U-12L

4 Close Relatives in Hawaii Pygmy Killer Whales (Feresa attenuata) Melon Headed Whales (Peponocephala elctra) Pygmy killer whale Melon-headed whale 9 ft – 365 lbs 8 ft – 350 lbs

5 Worldwide Distribution False Killer Whales

6 Hawaiian Populations “Pelagic” – offshore “Insular” – island-associated estimated at only 123 animals effective population size only is 46 Insular population declined from 1989 to 2010 from 3 rd common species in Hawaii to 9 th common species in Hawaii Aerial survey data from Dr. Joe Mobley, UH

7 Movements and Habitat Use Baird et al Movements and habitat use of satellite-tagged false killer whales around the main Hawaiian Islands. Endangered Species Research 10: Applied satellite tags to 3 groups of insular and one group (1 ind.) of pelagic Pseudoorca; Groups from insular population regularly moved between leeward and windward side of the islands; Some individuals moved extensively and rapidly among islands; Others remained associated with the island of Hawaii for longer periods; Individuals within groups associated and dissassociated over periods of days sometimes moving >100km apart; The pelagic individual came within 62km of land (inshore of the longline fishery exclusion boundary); Insular groups stayed <100km from shore. Distance from shore cannot be used as a strict boundary between populations Individuals from insular population may overlap with longline fisheries

8 Social Structure

9 Food Sharing

10 Mass Strandings

11 Threats Hunted in West Indies and Indonesia Some killed every year in Japan – THE COVE – Iki Island 900 killed between Long-line fisheries in Hawaii Persistent organic pollutants (e.g. PCBs, PBDEs) Reduction in prey size Deliberate shooting

12 Hawaii-based long-line fishery id the only fishery with an observer program 20% coverge in the deep-set tuna fishery False killer whale bycatch exceeded “sustainable levels” since at least 1999 Jan NMFS formed a Take Reduction Team Draft of Take Reduction Plan Mandatory Circle Hooks Weak Hooks Year-round closure of area around main Hawaiian Islands Measures Being Considered In Hawaii

13 PACIFIC WHALE FOUNDATION

14 Do not let our Kama’aina whale fade into oblivion!


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