title: Stock enhancement to address multiple recreational fisheries objectives: an integrated model applied to red drum Sciaenops ocellatus in Florida.
abstract: An integrated socioecological model was developed to evaluate the potential for stock enhancement with hatchery fishes to achieve socioeconomic and conservation objectives in recreational fisheries. As a case study, this model was applied to the red drum Sciaenops ocellatus recreational fishery in the Tampa Bay estuary, Florida, U.S.A. The results suggest that stocking of juvenile fish larger than the size at which the strongest density dependence in mortality occurs can help increase angler satisfaction and total fishing effort (socioeconomic objectives) but are likely to result in decreases to the abundance of wild fishes (a conservation objective). Stocking of small juveniles that are susceptible to density-dependent mortality after release does not achieve socioeconomic objectives (or only at excessive cost) but still leads to a reduction of wild fish abundance. The intensity and type of socioeconomic gains depended on assumptions of dynamic angler-effort responses and importance of catch-related satisfaction, with greatest gains possible if aggregate effort is responsive to increases in abundance and satisfaction that are greatly related to catch rates. These results emphasize the view of stock enhancement, not as a panacea but rather as a management tool with inherent costs that is best applied to recreational fisheries under certain conditions.
authors.affiliation: School of Forest Resources and Conservation, Fisheries and Aquatic Sciences Program, University of Florida, 7922 NW 71st Street, Gainesville, FL 32605, U.S.A.
authors.forename: E V
authors.initials: EV
authors.lastname: Camp
authors.forename: K
authors.initials: K
authors.lastname: Lorenzen
authors.forename: R N M
authors.initials: RN
authors.lastname: Ahrens
authors.forename: M S
authors.initials: MS
authors.lastname: Allen
mesh_terms: D000818:Animals; D003247:Conservation of Natural Resources; D003258:Consumer Behavior; D005398:Fisheries / Q000191:economics / Q000379:methods*; D005399:Fishes; D005431:Florida; D006801:Humans; D008962:Models, Theoretical; D011998:Recreation
keywords: hatchery; socioecological system; sport fishing; stocking