Maturation of male age-0 Atlantic salmon following a massive, localized flood

摘要: Maturation of male age-0 Atlantic salmon Salmo salar parr in New England, U.S.A. streams is rare (25%), but maturation was high (74%) by autumn the Sawmill River following a massive, localized flood. low two other study (3, 7%) same year as flood, and (6%) rivers (5%) subsequent year, suggesting that rates were related to The appear have been result greater growth opportunity Masses fish October two-fold (13·2 g) than (6·5, 6·9 g). Mechanisms contributing fast may include community reorganization flood water temperature diVerences among rivers. caused an year-class failure for brook trout Salvelinus fontinalis brown trutta large reduction (69%) number compared rivers, possibly reducing competition or agonistic interactions remaining fish. Average temperatures slightly warmer (17·0) C) (15·5, 14·9) C). By influencing structure fish, it appears strong environmental disturbance can also alter direction timing life histories salmon.