An Age-Dependent Tag Return Model for Estimating Mortality and Selectivity of an Estuarine-Dependent Fish with High Rates of Catch and Release

Content Provider	Semantic Scholar
Author	Bacheler, Nathan M. Hightower, Joseph E. Paramore, Lee M. Buckel, Jeffrey A. Pollock, Kenneth H.
Copyright Year	2008
Abstract	Abstract Red drum Sciaenops ocellatus support commercial and recreational fisheries in North Carolina, but the stock was overfished in the 1980s because fishing was unregulated. Subsequent fishery regulations increased subadult survival into adult age-classes, but overall stock status is difficult to assess because of migration to ocean waters, prohibited harvest of older fish, and relative importance of catch and release. We analyzed 24 years of tagging data from the North Carolina Division of Marine Fisheries to assess the effects of two regulation changes (effected in 1991 and 1998) on fishing mortality rate (F) and selectivity (SEL) patterns of red drum. We used an age-dependent tag return model that accounted for both harvest and catch-and-release fishing. Using external estimates of natural mortality (M) and annual tag retention rate, we obtained precise estimates of annual F; an overall tag reporting rate (λ); and fate-specific, age-specific, and regulation-period-specific SEL. Estimated F of fully.
Starting Page	1422
Ending Page	1432
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1577/T07-146.1
Volume Number	137
Alternate Webpage(s)	https://repository.lib.ncsu.edu/bitstream/handle/1840.2/2244/Bacheler_etal_2008a.pdf?isAllowed=y&sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article