Influence of Transmitter Attachment Procedures on Swimming Performance of Wild and Hatchery-Reared

• Main Author: Atlantic Salmon Smolts
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Solmo; Atlantic salmon
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.309.9114; http://www.stream.fs.fed.us/fishxing/fplibrary/Peake and others c-1997.pdf

sul~rr hnve prilnnrily hcun cxnmirlrd III thc Inbornlory wilh hnlchcry-rcared fish. Bicitclcmc~ry rccnrchcrs must extrapolulr tindirl~s of tnggirlg sludics to wild. migrnling smtills. Hccuusc hutchrry rcnrinp can uff'ccr snlrnonid dcvtiltipni~t;tnd hrcnuse field tagging proccdurc:, and cnvironmcntal condition> can differ frcrrrt thosc in the lnhoralory. wc rneasurcd critical swimnlinp spccd ol hntchery-rcarccl Atlantic salmon ~molti cqu~pprd wilh inlernnl, external, rir pslric dummy radlo tranhrnitlers in thr labomlor-y. Wc ~hcrl r-rpcn~rd thr cxpcrirncnl with wild, migraling fish In amhicn~ cnviro~mcntal condition.\. Swirnm~np;tbil~ly 01 ha~chcry amolth wa \ no1 hipnilicnnlly nl-Ucctrd hy nny nttachmrnt proordurc, xnd no hifinilicanr difl'crcncrs wcrt. found bc~wcen fish tcs~rd I nr I(> h after lagging. Similarly, wild rnroll ~ wcrc no1 impaired hy castric ~ransmittcrh: howcvrr, pcrlcrrnurhx of wild fish tec~cd I or 10 h after intrrnal or cxtcrnnl attachmcm wns s~pnificantly lower than Ihal of wild controls. Thus. rcilction oi h;\lchcry-rcarcd Arlanlic snlnio~l sn~oll \ Itr nr~achmcnt procedures can differ from tha ~ oi'wild nilgrnnls. Biotclemcrry reacnrchcrs hould cxcrcisc cnul~cin in inlerprcting dnta oht;~incd from wild Allantic salmon srrloll.: equipped w~th ~rttrrr~al or cxlcrrrnl radio tmnarnillcrs dur~ng thc First Itr 11;~l'lcr logping. Reccnl technological advanccs in the design of radio and acoustic transmilt~xs haw allowcd hiotclrmclry studics to he performed on incrc;~singly sndlcr fish such as smolts of- Atlantic salrr~on Solmo salnr-. Migratory bchavior 01- lapgcd fish can represen! lhal of thc untagpcd population if Lransmittcr attachment causes minimal physiological dislurbuncc and no impairment of swimming. Currcntly used uansmitkrs arc surgically implanrcd inlo thc body cavity (intcrnul), insertcd into thc s~ornach (gnstric), or fixed to thc surfacc of thc body (external; Mellas and Hayncs 1985). Studics that have invesligatcd thr ~ncasurablc cffcct ~ of thcsc proccdurcs generally ...