Updated assessments of Southern Hemisphere humpback whale breeding stock C and its component sub-stocks

Bayesian stock assessment results for a mixed model breeding sub-stocks C1 and C2+3 are presented. The modelling approach allows mixing on the feeding grounds and fits to various data sources, including capturerecapture data from both sub-stocks. A baseline case which inputs all capture-recapture da...

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Bibliographic Details
Main Authors: Johnston, Susan J, Butterworth, Doug S
Format: Report
Language:English
Published: Marine Resource Assessment and Management Group 2008
Subjects:
Humpback whales
Bayesian assessment
Humpback Whale
Online Access:http://hdl.handle.net/11427/18503
Description
Summary:Bayesian stock assessment results for a mixed model breeding sub-stocks C1 and C2+3 are presented. The modelling approach allows mixing on the feeding grounds and fits to various data sources, including capturerecapture data from both sub-stocks. A baseline case which inputs all capture-recapture data directly suggests posterior median 2006 abundances for each sub-stock of a little more than 7000, with C1 at about 85% and C2+3 at about 55% of their pristine levels. These results are intended to be illustrative only, and the variety of choices available for the various model inputs require further discussion by the IWC Scientific Committee.

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