01496nas a2200181   4500008004100000050006000041245011700101210006900218260010200287300001400389520076500403653001601168653001101184100001601195700002301211700002501234856005501259       1980                        eng d  aOSU Libraries; Valley QL638 .S2 S24, Guin QL638 .S2 S2400aAdaptive and behavioral responses to artificial propagation in a stock of chum salmon, <i>Oncorhynchus keta</i>.0 aAdaptive and behavioral responses to artificial propagation in a  aOtter Crest, ORbOregon State University Press: Oregon State University Sea Grant College Program  ap.309-3123 aA pilot production program with chum salmon (O. keta ) presented an opportunity to look for adaptive responses. Gametes were withdrawn from a vestigial, naturally-reproducing stock in Whiskey Creek, a tributary of Netarts Bay, Oregon. The fish have now been artificially propagated for two generations. This report describes selective processes and adaptive responses contributing to the evolution of this hatchery brood stock. Hatchery-produced fry entered the estuary somewhat earlier than fry produced in the natural habitat. A large proportion of hatchery-produced fish were recruited to the estuarine stock. The increased variation in size of out-migrant fry from the hatchery indicated qualitative as well as quantitative change in the stock's structure.10aaquaculture10asalmon1 aLannan, Jr.1 aMcNeil, William, J1 aHimsworth, Daniel, C  uhttps://netarts.library.oregonstate.edu/node/14611