Deferred costs of compensatory growth after autumnal food shortage in juvenile salmon

被引:123
作者
Morgan, IJ [1 ]
Metcalfe, NB [1 ]
机构
[1] Univ Glasgow, Inst Biomed & Life Sci, Div Environm & Evolutionary Biol, Fish Biol Grp, Glasgow G12 8QQ, Lanark, Scotland
关键词
Salmo salar; life-history strategy; fat; body size; compensatory growth; fish;
D O I
10.1098/rspb.2000.1365
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Growing animals are often able to offset the effects of periods of reduced food availability by subsequently undergoing a phase of elevated compensatory or 'catch-up' growth. This indicates that growth rates are not normally maximized even when food is not limiting, suggesting that fast growth may be costly. Here, we show experimental evidence of a lung-term deferred cost of compensatory growth after a period of food shortage. Juvenile salmon subjected to a short-lived low-food regime in autumn subsequently entered a hyperphagic phase, leading to complete restoration of lipid reserves and partial recovery of lost skeletal growth relative to controls. However, several months later they entered a prolonged phase of poorer performance (despite food now being freely available), so that by the following spring they were substantially smaller than controls and had lower lipid reserves for their body size. The incidence of sexual maturation in males the following breeding season was also reduced. Salmon thus appear to trade off the benefits of short-term restoration. of fat stores prior to winter against long-term performance.
引用
收藏
页码:295 / 301
页数:7
相关论文
共 30 条
[1]   Adaptive intrinsic growth rates: An integration across taxa [J].
Arendt, JD .
QUARTERLY REVIEW OF BIOLOGY, 1997, 72 (02) :149-177
[2]  
ASHWORTH A, 1986, NUTR REV, V44, P157, DOI 10.1111/j.1753-4887.1986.tb07613.x
[4]   Nestling diet, secondary sexual traits and fitness in the zebra finch [J].
Birkhead, TR ;
Fletcher, F ;
Pellatt, EJ .
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 1999, 266 (1417) :385-390
[5]  
BOERSMA B, 1997, ENDOCR REV, V18, P616
[6]  
BOHLIN T, 1990, ANN ZOOL FENN, V27, P139
[7]   Seasonal matching of foraging to anticipated energy requirements in anorexic juvenile salmon [J].
Bull, CD ;
Metcalfe, NB ;
Mangel, M .
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 1996, 263 (1366) :13-18
[8]   HOMEOSTASIS AND FITNESS [J].
CALOW, P .
AMERICAN NATURALIST, 1982, 120 (03) :416-419
[9]   PHYSIOLOGICAL CONSEQUENCES OF OVERWINTERING IN STREAMS - THE COST OF ACCLIMITIZATION [J].
CUNJAK, RA .
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 1988, 45 (03) :443-452
[10]   Role of fetal and infant growth in programming metabolism in later life [J].
Desai, M ;
Hales, CN .
BIOLOGICAL REVIEWS, 1997, 72 (02) :329-348