A preliminary population estimate of the Group IV breeding stock of humpback whales off Western Australia.

A preliminary population estimate of the Group IV breeding stock of humpback whales off Western Australia.

Jenner, K.C.S. & M.-N. Jenner (1994).

Rep. int. Whal. Commn 44:303-307

Abstract
Data collected in 1990, 1991 and 1992 from a photo-identification study of humpback whales (Megaptera novaeangliae) off northwestern Australia have enabled the calculation of a preliminary population estimate of the Group IV breeding stock. The Chapman modification of the Petersen population estimate resulted in a 1990-1991 estimate of 2,736 (928; 9,928 95% CI) and a 1991-1992 estimate of3,878 (1,319; 14,10895% CI). The 1991-1992 estimate is considered the more accurate and is similar to a population point estimate of the same stock calculated from aerial surveys in a separate independent study.

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