Size-at-Age in Haddock (Melanogrammus aeglefinus): Application of the Growing Degree-Day (GDD) Metric

被引:9
作者
Neuheimer, Anna B. [1 ]
Taggart, Christopher T. [1 ]
Frank, Kenneth T. [2 ]
机构
[1] Dalhousie Univ, Dept Oceanog, 1355 Oxford St, Halifax, NS B3H 4J1, Canada
[2] Fisheries & Oceans Canada, Bedford Inst Oceanog, Ocean Sci Div, Dartmouth, NS, Canada
来源
RESILIENCY OF GADID STOCKS TO FISHING AND CLIMATE CHANGE | 2008年 / 24卷
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.4027/rgsfcc.2008.06
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
While growth variation in fishes is the result of a number of different factors (temperature, food consumption, genetic composition, etc.), temperature has been identified as one controlling factor on fish size-at-age. Thus, variation in size-at-age due to variation in temperature should be explained before the other factors are explored. We argue that the relevant metric for explaining temperature-dependent size-at-age variation in most fishes is physiologically relevant temperature; i.e., the thermal integral parameterized as the growing degree-day (GDD, degrees C x d) metric. Accordingly, we employ GDD to examine the change in size-at-age (length-at-day, LaD) among eastern Scotian Shelf (Northwest Atlantic Fisheries Organization statistical divisions 4VW) haddock (Melanogrammus aeglefinus) from 1970 through 2003. Significant variation in length-at-day (LaD) among year classes (decline in slopes and intercepts of LaD-at-GDD relations) remains after LaD variation due to GDD (temperature) is explained. The unexplained variation is postulated to be a result of temperature-independent factors such as condition or size-selective fishing or both.
引用
收藏
页码:111 / +
页数:3
相关论文
共 20 条
[1]   TEMPERATURE AND ORGANISM SIZE - A BIOLOGICAL LAW FOR ECTOTHERMS [J].
ATKINSON, D .
ADVANCES IN ECOLOGICAL RESEARCH, VOL 25, 1994, 25 :1-58
[2]   Bases and limits to using 'degree.day' units [J].
Bonhomme, R .
EUROPEAN JOURNAL OF AGRONOMY, 2000, 13 (01) :1-10
[3]   THE EFFECT OF TEMPERATURE ON GROWTH OF ATLANTIC COD (GADUS-MORHUA L) [J].
BRANDER, KM .
ICES JOURNAL OF MARINE SCIENCE, 1995, 52 (01) :1-10
[4]  
*DFO, 2001, A306 DFO
[5]  
DRINKWATER KF, 2001, ICES CM V, V10
[6]   Maturity changes in Norwegian spring-spawning herring Clupea harengus:: compensatory or evolutionary responses? [J].
Engelhard, GH ;
Heino, M .
MARINE ECOLOGY PROGRESS SERIES, 2004, 272 :245-256
[7]   GROWTH OF JUVENILE SNAPPER, PAGRUS-AURATUS [J].
FRANCIS, MP .
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH, 1994, 28 (02) :201-218
[8]  
FRANK KT, 2001, 2001100 CAN SCI ADV
[9]  
Fry F.E.J., 1971, FISH PHYSIOL, V6, P1, DOI [DOI 10.1016/S1546-5098(08)60146-6, 10.1016/S1546-5098(08)60146-6]
[10]  
Gilbert N., 1976, Ecological relationships