全球智库信息集成服务系统(G2TT): Divergent trends in life-history traits between Atlantic salmon Salmo salar of wild and hatchery origin in the Baltic Sea.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1111/j.1095-8649.2009.02520.x
	Divergent trends in life-history traits between Atlantic salmon Salmo salar of wild and hatchery origin in the Baltic Sea.
	Vainikka A; Kallio-Nyberg I; Heino M; Koljonen M-L
发表日期	2010
出处	Journal of Fish Biology 76 (3): 622-640
出版年	2010
语种	英语
摘要	Four Atlantic salmon Salmo salar stocks in the Baltic Sea, varying in their breeding history, were studied for changes in life-history traits over the years 1972-1995. Total length (L_{T}) at age of captured (L_{TC}) fish had increased throughout the study period, partly due to increased temperature and increased L_{T} at release, (L_{TR}) but also due to remaining cohort effects that could represent unaccounted environmental or genetic change. Simultaneously, maturation probabilities controlled for water temperature, L_{TC} and L_{TR} had increased in all stocks. The least change was observed in the River Tornionjoki S. salar that was subject only to supportive stockings originating from wild parents. These results suggest a long-term divergence between semi-natural and broodstock-based S. salar stocks. Increased L_{T} at age explained advanced maturation only marginally, and it remains an open question to what extent the generally increased probabilities to mature at early age reflected underlying genetic changes.
主题	Evolution and Ecology (EEP)
关键词	Anadromous Fishing-induced evolution Hatchery Life history Maturation reaction norm Selection
URL	http://pure.iiasa.ac.at/id/eprint/9223/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/129113
推荐引用方式 GB/T 7714	Vainikka A,Kallio-Nyberg I,Heino M,et al. Divergent trends in life-history traits between Atlantic salmon Salmo salar of wild and hatchery origin in the Baltic Sea.. 2010.