Abstract
The size and the density of the red-crab population between latitudes 19°20′ and 20°10′S and depths 400 and 900 m are estimated by a tag-recapture technique. Results are compared with estimates of stock density in the same area by three other methods (trawling, photography and effective fishing area [EFA]). Tagging and photography yielded similar estimates of crab population size (21,6 and 19,5 million crabs respectively) whereas trawling (1,9 million) and EFA techniques (81,4 million) apparently under- and overestimated stock size respectively. Fishing mortality (based on the ratio of crabs returned to those tagged) is estimated as 0,24 for males and 0,41 for females.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.