Dynamics of an Introduced and Unexploited Lake Whitefish Population in Lake Pend Oreille, Idaho

摘要: AbstractTo evaluate biological potential of a commercial fishery for an unexploited Lake Whitefish Coregonus clupeaformis population in Pend Oreille, Idaho, we estimated parameters related to production and yield. The length frequency based on trap-netting autumn 2005 was normal with mean 448 mm TL, whereas the gillnetting spring 2006 bimodal 390 mm TL. Sex composition skewed toward females (0.66) during trap-netting. Shape β weight–length models (β = 3.38) males 3.45) were similar those other populations. Instantaneous growth rates K (K 0.144 per year) 0.153 among lowest populations across species’ range. Age at 50% maturity (females: 6.5 years; males: 6.0 years) TL; 378 mm TL) high natural mortality rate M (0.149 pe...