Premium
Abundance and Production of a Self‐Sustaining Population of Rainbow Trout in the South Fork Holston River, Virginia
Author(s) -
Neves Richard J.,
Brayton Steven L.,
Helfrich Louis A.
Publication year - 1985
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8659(1985)5<584:aapoas>2.0.co;2
Subject(s) - rainbow trout , salmo , fish measurement , trout , fishery , salvelinus , biomass (ecology) , population , abundance (ecology) , hectare , zoology , biology , environmental science , geography , ecology , fish <actinopterygii> , demography , agriculture , sociology
A population of rainbow trout (Salmo gairdneri) in two sections of the South Fork Holston River, Virginia was sampled quarterly from November 1979 to October 1980 to determine abundance, biomass, and annual production. Densities of trout varied from 592 to 1,734 per hectare, and mean biomass from 3.13 to 4.30 g/m 2. Age composition during the year consisted of 17% Age 0, 60% Age 1, 21% Age 2, and 3% Age 3. Mean annual production (3.6 g/m 2) was similar to other reported estimates for rainbow trout, and generally exceeded those obtained for endemic brook trout (Salvelinns fontinalis) in the southern Appalachians.