IUCN Red List Assessment
Red List Category
DD
Data Deficient
Red List Criteria
Version
3.1
Year Assessed
2008
Assessor/s
Taylor, B.L., Baird, R., Barlow, J., Dawson, S.M., Ford, J., Mead, J.G., Notarbartolo di Sciara, G., Wade, P. & Pitman, R.L.
Reviewer/s
Hammond, P.S. & Perrin, W.F. (Cetacean Red List Authority)
Justification
As with similar species, threats that could cause widespread declines include high levels of anthropogenic sound, especially military sonar and seismic surveys. The population remains depleted from whaling. However, the decline took place more than three generations ago; the combination of possible declines driven by vulnerability to high-level anthropogenic sound sources is believed sufficient that a 30% global reduction over three generations (53 years; Taylor et al. 2007) cannot be ruled out (criterion A).
History
- 1996Lower Risk/conservation dependent(Baillie and Groombridge 1996)
- 1994Insufficiently Known(Groombridge 1994)
- 1990Vulnerable(IUCN 1990)
- 1988Vulnerable(IUCN Conservation Monitoring Centre 1988)
- 1986Vulnerable(IUCN Conservation Monitoring Centre 1986)
