The effects of ration size on migration by hatchery-raised Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)

被引:25
作者
Lans, Linnea [1 ]
Greenberg, Larry A. [1 ]
Karlsson, Jens [1 ]
Calles, Olle [1 ]
Schmitz, Monika [1 ]
Bergman, Eva [1 ]
机构
[1] Karlstad Univ, Dept Biol, S-65188 Karlstad, Sweden
关键词
Salmo salar; Salmo trutta; migration; standard metabolic rate; food ration; PARR-SMOLT TRANSFORMATION; SWIMMING PERFORMANCE; SALVELINUS-ALPINUS; BALTIC SEA; TRADE-OFF; BEHAVIOR; WILD; L; MORTALITY; RIVER;
D O I
10.1111/j.1600-0633.2011.00503.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The possibility to increase the proportion of migrating hatchery-reared smolts by reducing their food ration was studied. Lake-migrating, hatchery-reared salmon (Salmo salar) and trout (Salmo trutta) smolts were either fed normal rations, based on recommendations from the fish-farming industry, or reduced (15-20%) rations. They were released into the River Klaralven, western Sweden, and followed as they swam downstream to Lake Vanern, a distance of around 25 km. For both Atlantic salmon and brown trout, smolts fed a reduced ration migrated faster than fish fed a normal ration. Furthermore, a higher proportion of salmon smolts fed reduced rations migrated to the lake than fish fed normal rations in 2007 but not in 2006. This difference between years corresponded to greater treatment differences in size and smolt status in 2007 than in 2006. For trout, the proportion of migrating individuals and smolt development did not differ with ration size. Trout migrants fed a normal ration had a higher standard metabolic rate (SMR) than nonmigrants, whereas there was no difference in SMR between migrating and nonmigrating salmon. These results show that it is possible to use a reduced food ration to increase the migration speed of both Atlantic salmon and brown trout and to increase the proportion of migrating Atlantic salmon.
引用
收藏
页码:548 / 557
页数:10
相关论文
共 48 条
[1]   Movement and mortality of stocked brown trout in a stream [J].
Aarestrup, K ;
Jepsen, N ;
Koed, A ;
Pedersen, S .
JOURNAL OF FISH BIOLOGY, 2005, 66 (03) :721-728
[2]   A comparison of startle response in two morphs of the brook stickleback (Culaea inconstans): Further evidence for a trade-off between defensive morphology and swimming ability [J].
Andraso, GM .
EVOLUTIONARY ECOLOGY, 1997, 11 (01) :83-90
[3]   Population density of migratory and resident brown trout (Salmo trutta) in relation to altitude:: evidence for a migration cost [J].
Bohlin, T ;
Pettersson, J ;
Degerman, E .
JOURNAL OF ANIMAL ECOLOGY, 2001, 70 (01) :112-121
[4]  
Brown C, 2001, J FISH BIOL, V59, P471, DOI 10.1111/j.1095-8649.2001.tb02354.x
[5]   Temporal and environmental influences on the variation in sea trout (Salmo trutta L.) smolt migration in the Burrishoole system in the west of Ireland from 1971 to 2000 [J].
Byrne, CJ ;
Poole, R ;
Dillane, A ;
Rogan, G ;
Whelan, KF .
FISHERIES RESEARCH, 2004, 66 (01) :85-94
[6]   Size and temperature dependent foraging capacities and metabolism:: consequences for winter starvation mortality in fish [J].
Bystrom, Par ;
Andersson, Jens ;
Kiessling, Anders ;
Eriksson, Lars-Ove .
OIKOS, 2006, 115 (01) :43-52
[7]   Size-dependent mortality of migratory silver eels at a hydropower plant, and implications for escapement to the sea [J].
Calles, O. ;
Olsson, I. C. ;
Comoglio, C. ;
Kemp, P. S. ;
Blunden, L. ;
Schmitz, M. ;
Greenberg, L. A. .
FRESHWATER BIOLOGY, 2010, 55 (10) :2167-2180
[8]  
Debowski Piotr, 1996, Archiwum Rybactwa Polskiego, V4, P19
[9]  
ELVINGSON P, 1992, Aquaculture and Fisheries Management, V23, P453, DOI 10.1111/j.1365-2109.1992.tb00789.x
[10]   INDEXES OF PARR-SMOLT TRANSFORMATION IN JUVENILE STEELHEAD TROUT (SALMO-GAIRDNERI) UNDERGOING VOLITIONAL RELEASE AT COLE RIVERS HATCHERY, OREGON [J].
EWING, RD ;
EVENSON, MD ;
BIRKS, EK ;
HEMMINGSEN, AR .
AQUACULTURE, 1984, 40 (03) :209-221