7384 - Laserfiche WebLink

Home Browse Search

been recaptured in the last 8 years (L. Kaeding, personal communication). An additional 76,000 age-0 (50-125 mm TL) fish were stocked between 1982 and 1984. Some of these fish have been recaptured, but it is presumed that they n,?c1nt~ z L,(~L have not been4large enough~to be vulnerable to sampling gear (L. Kaeding, personal communication). `` Reintroduction of Colorado squawfish into areas of. the lower Colorado River ire ~ ~f~ Lr,,~ ~~~'~ where they have been extirpated was initiated in 1987, by the Arizona Game and '~ ~V1Qv~' Fish Department, and FWS, Dexter National Fish Hatchery. It is t\o,~o soon to ~,pD'>~ ~\ determine the success of that endeavor. ~- (~ tN rev l ~' S S Y _OLkt. ~ " P ~~, ~os21 _ ~ ~Z s Sz ~ ~ ~ `".'1-~-~„ ~~ 11(l. ~ ro S ~c-t-e ~S ~` ~~ ` I ~ ~wa`~+e~~{ Fish stocking programs can benefit management for recovery, but only in ~~~ '`~ coordination with a com rehensive program in which life requirements of target P r~~ species are understood, and met by sites in which stocking occurs. It is noted ~(oGQPi 0" that the loss of habitat is the prime cause of loss of native fishes in the Colorado River Basin, reintroduction of fishes back into habitats that were not suitable when they were lost, is, at best, a stop-gap measure (Rinne et al 1985). Fish culture dominated fishery science in the United States for at least 50 years. Regarded as a panacea to stop the loss of fisheries, it was not until t,#~'1930-40 dgca~d'e that research highlighted the need for habitat protection and management (Radonski and Martin 1981). In the past, fish culture was not directed at the restoration of endangered fishes; rather, it was directed at restoring sport fishing. e, here are many research needs that remain to be answered regarding the use of hatcheries, and stocking p to ~r t Yv` ,Y+~',~6 r' in management for recovery. Altkoul;h stocking o t e aym n,~ S~2LtGS W~+S~~Ct~v.~ ~ f~11 ~:~that.-s~c~cip,~.~ha-~' are rare and endangered^ abitat loss 30