Browsing by Author "Betty E"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Biodiversity of the Kermadec Islands and offshore waters of the Kermadec Ridge: report of a coastal, marine mammal and deep-sea survey (TAN1612)
    (Ministry for Primary Industries, 2017-01-30) Clark MR; Trnski T; Constantine R; Aguirre JD; Barker J; Betty E; Bowden DA; Connell A; Duffy C; George S; Hannam S; Liggins LJ; Middleton C; Mills S; Pallentin A; Reikkola L; Sampey A; Sewell M; Spong K; Stewart A; Stewart R; Struthers C; van Oosterom L
  • Thumbnail Image
    Item
    Stomach contents of long-finned pilot whales, Globicephala melas, mass-stranded in Tasmania
    (Public Library of Science (PLoS), 14/01/2019) Beasley I; Cherel Y; Robinson S; Betty E; Hagihara R; Gales R
    New data are reported from analyses of stomach contents from 114 long-finned pilot whales mass-stranded at four locations around Tasmania, Australia from 1992–2006. Identifiable prey remains were recovered from 84 (74%) individuals, with 30 (26%) individuals (17 females and 13 males) having empty stomachs. Prey remains comprised 966 identifiable lower beaks and 1244 upper beaks, belonging to 17 families (26 species) of cephalopods. Ommastrephidae spp. were the most important cephalopod prey accounting for 16.9% by number and 45.6% by reconstructed mass. Lycoteuthis lorigera was the next most important, followed by Ancistrocheirus lesueurii. Multivariate statistics identified significant differences in diet among the four stranding locations. Long-finned pilot whales foraging off Southern Australia appear to be targeting a diverse assemblage of prey (�10 species dominated by cephalopods). This is compared to other similar studies from New Zealand and some locations in the Northern Hemisphere, where the diet has been reported to be primarily restricted to �3 species dominated by cephalopods. This study emphasises the importance of cephalopods as primary prey for Southern long-finned pilot whales and other marine vertebrates, and has increased our understanding of long-finned pilot whale diet in Southern Ocean waters.