Selectivity effects on wild white-spotted charr (Salvelinus leucomaenis) during a catch and release fishery

摘要: Abstract Angling selectivity due to both phenotypic variation and experience of being caught was examined at the individual level in white-spotted charr (Salvelinus leucomaenis) a multiple catch-and-release experiment natural stream. We carried out field study headwater tributary, which is closed recreational fishing year-round for all species. As reach (0.9 km) located upstream from impassable dams, have non-anadromous life history. After identifying fish (n = 415) using numbered anchor tags, eleven episodes 7-day intervals were conducted single barbed baited hooks. Of 735 marked (cumulative count) caught-and-released, 82 deep-hooked released by cutting line. Only one (0.13%) died before release. these episodes, each recaptured 366, recapture rate 88.2%, fork length 96–311 mm) ranged zero seven times. The number times increased with age, but not related latest growth or condition factor. In addition, males more often than females. angler differed significantly between (2.14 ± 0.25 times) (1.77 0.13 11th episode. A logistic regression analysis examine whether eight variables probability result suggests that length. Therefore, been are likely be fish. Our results indicate regulations can an effective management tool because anglers may continuously catch while conserving populations.