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Angling of hybrid sunfish from a hatchery pond with potential implications for community fisheries

Aquaculture and Fisheries 2023年第1期8卷 91-95页

作者： Brian G.Blackwell Matthew J.Ward Todd M.Kaufman South Dakota Department of Game Fish and Parks603 East 8th AvenueWebsterSD57274USA South Dakota Department of Game Fish and Parks44437139A StreetWaubaySD57273USA

Hatcheries are frequently called upon to produce catchable-sized fish for stocking community fishing *** attributes of fish selected for stocking into community ponds are that they are easy to produce in a hatchery system to sizes anglers are interested in catching and they provide anglers with high catch rates once *** sunfish[male Bluegill(Lepomis macrochirus)×female Green sunfish(***)]have attributes that potentially make them attractive for use in community fishing *** assessed initial angler catch rates of 100 stocked hybrid sunfish in a 0.12-ha hatchery pond and after being subjected to angling(four,1-hr catch-and-release fishing events with five anglers).We also investigated whether catch rates would change following a supplemental stocking of an additional 100 hybrid sunfish(four,1-hr catch-and-release fishing events with five anglers).The anal fin of each fish in the second stocking was hole punched to differentiate them from those of the first stocking and fish caught by anglers were hole punched in the caudal fin each time they were caught before being released back into the *** catch rates were highest during initial fishing events that followed stocking(9.2 fish/angler hr and 18.0 fish/angler hr)and substantially declined in subsequent events(≤3.4 fish/angler hr).Catches of the newly stocked fish and previously stocked fish contributed to the high catch following the supplemental ***(80%)of the fish were caught in the first 30 min of each event and 45%were caught during the first 10 *** were able to catch 88%of the fish from the first stocking and 67%from the second stocking at least *** mortality occurred during the study as all fish were recovered when the pond was *** results suggest that hybrid sunfish will potentially provide high initial catch rates following stocking into community ponds,but managers should expect reduced catch rates following initial fishing even without h

关键词： hybrid sunfish Angling Community fishing ponds

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