Processing

IWC | Archive
Account Menu
  • Admin Login
  •  Dash
  •  Featured collections
  •  Recent

 Geographic search

 Advanced search

Powered by Powered by ResourceSpace
%BROWSE_INDENT% %BROWSE_EXPAND% %BROWSE_TEXT% %BROWSE_REFRESH%
Browse by tag
Featured collections
Workflow
Browse

This web application uses cookies and other tracking technologies to ensure you get the best experience.

View all results

SC/67B/RMP/02 

Full screen preview

Resource tools

Download this file

1.6 MB Download

View directly in browser

1.6 MB View in browser
  •  Share
Resource details

Resource ID

9120

Access

Open

Document Number

SC/67B/RMP/02

Full Title

A plausible range of MSYR(1+) and relative plausibility of stock structure hypotheses for the WNP common minke whales investigated by bycatch data: Updated responses to requests by the Scientific Committee for more detailed explanation for Section 4 of SC

Author

Toshihide Kitakado and Mutsuo Goto

Publisher

International Whaling Commission

Publication Year

2018

Abstract

This paper aims at suggesting a plausible range of MSYR(1+) and relative plausibility of stock structure Hypotheses A and C for the western North Pacific common minke whales by responding to comments made in SC67a for more detailed explanation for Section 4 of SC/67a/SCSP/13. First, as supplementary information, the paper begins showing time trajectory of population size for each stock under the two stock structure hypotheses. Then an estimated time trend of bycatch proportion of J animals is given with a set of formulas as requested by the SC, and this is compared to that estimated in RMP/IST trials under different assumptions for stock structure (Hypotheses A and C) and MSYR. The results show that only an MSYR(1+) value of 2% or more under Hypothesis A is consistent with the bycatch data, for which the results discussed above indicate no conservation concern for the J stock under the research catches to be taken by Japan. These conclusions are robust to different specifications of the error structure for the time trend estimate from the bycatch data. Also, the results were not sensitive to handling of unassigned J/O animals. However, there are discrepancies between data and model predictions at a sub-area level, which points to the need to revise the mixing matrices used for the RMP/IST trials.

License management
Consent management
Related featured and public collections
  IWC Scientific Committee / Scientific Committee Meeting Papers / SC67B | Slovenia 2018 / RMP
Search for similar resources