Pubblicazione scientifica

Stomach contents of long-finned pilot whales, Globicephala melas mass-stranded in Tasmania

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità

RIASSUNTO

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.

DATA

Data di pubblicazione: 14/01/2019

AUTORI

BEASLEY ISABEL
CHEREL YVES
ROBINSON SUE
BETTY EMMA
HAGIHARA RIE
GALES ROSEMARY

ENTE DI AFFERENZA

SNUBFIN DOLPHIN PROJECT COLEBROOK TASMANIA AUSTRALIA
COLLEGE OF SCIENCE & ENG JAMES COOK UNIV TOWNSVILLE AUSTRALIA
CENTRE D’ETUDES BIOLOGIQUES DE CHIZE CEBC UMR 7372 DU CNRS-UNIVERSITE DE LA ROCHELLE VILLIERS-EN-BOIS FRANCE
INVASIVE SPECIES BRANCH BIOSECURITY TASMANIA DEPT PRIMARY IND PARKS WATER & ENVIRONMENT TASMANIA AUSTRALIA
INST APPLIED ECOLOGY NEW ZEALAND SCHOOL OF SCIENCE AUCKLAND UNIV TECH AUCKLAND NEW ZEALAND
INST NATURAL & MATHEMATICAL SCIENCES COLLEGE OF SCIENCES MASSEY UNIV PALMERSTON NORTH NEW ZEALAND
NATURAL VALUES CONSERVATION BRANCH DEPT PRIMARY IND PARKS WATER & ENVIRONMENT TASMANIA AUSTRALIA
UNIV SAINT ANDREWS UK

RIVISTA

PLoS ONE, 14(1), e0206747

IMPACT FACTOR

2,870

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