全球智库信息集成服务系统(G2TT): Temporal stability of the maturation schedule of capelin Mallotus villosus in the Barents Sea.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1051/alr/2012014
	Temporal stability of the maturation schedule of capelin Mallotus villosus in the Barents Sea.
	Baulier L; Heino M; Gjosaeter H
发表日期	2012
出处	Aquatic Living Resources 25 (2): 151-161
出版年	2012
语种	英语
摘要	Capelin in the Barents Sea are primarily harvested in a terminal fishery that targets maturing individuals. Theory predicts that, in a semelparous population (i.e., one in which reproduction is seasonal, synchronous, and followed by parental mortality), an unselective, terminal fishery (i.e., one in which most of the fish that are not caught will not have a new spawning opportunity) does not generate strong selection for changed age and size at maturation. The probabilistic maturation reaction norm (PMRN) method was applied to test this prediction and to detect possible temporal changes in length at maturation of Barents Sea capelin between 1978 and 2008. Maturation reaction norms suggest that maturation is age-independent in capelin, but that males require a larger size to attain the same maturation probability as females. No temporal trends in length at maturation could be detected, thus confirming the theoretical prediction. Furthermore, none of the candidate environmental variables tested to explain the temporal variability in length at maturation (water temperature and capelin biomass) consistently showed a significant correlation with the PMRN midpoints.
主题	Evolution and Ecology (EEP)
关键词	Fisheries-induced evolution Forage fish Osmeridae Probabilistic maturation reaction norms Semelparous life-history Sub-Arctic fish
URL	http://pure.iiasa.ac.at/id/eprint/9918/
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/129517
推荐引用方式 GB/T 7714	Baulier L,Heino M,Gjosaeter H. Temporal stability of the maturation schedule of capelin Mallotus villosus in the Barents Sea.. 2012.