, Volume 149, Issue 4, pp 593–603

Climate change and condition of herring (Clupea harengus) explain long-term trends in extent of skipped reproduction

Population Ecology

DOI: 10.1007/s00442-006-0483-3

Cite this article as:
Engelhard, G.H. & Heino, M. Oecologia (2006) 149: 593. doi:10.1007/s00442-006-0483-3


It is commonly assumed that iteroparous fish, once mature, normally reproduce in all consecutive seasons. Recent work has suggested, however, that in Norwegian spring-spawning herring—a population that undertakes extensive spawning migrations—almost one in two adults may skip their second spawning migration. Why should herring not return to spawn the year after first spawning, but instead wait an extra year? For herring, participation in distant, energetically costly, and risky spawning migrations will only pay off in terms of fitness if individuals are sufficiently large, and in sufficient condition, to both successfully migrate and spawn. Changes in the environment and individual condition should therefore affect the likelihood of skipped spawning. This paper describes long-term changes in the extent to which the second reproductive season is skipped in this herring population. These are shown to be linked to the size and condition of herring as first-time spawners, and to climatic factors possibly related to food availability. The findings corroborate the hypothesis that skipped reproduction results from trade-offs between current and future reproduction, growth and survival.


Skipping reproduction Size and condition Climate Current and future reproduction Spawning migration costs and risks 

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Cefas LowestoftLowestoftUK
  2. 2.Institute of Marine ResearchBergenNorway
  3. 3.Adaptive Dynamics NetworkInternational Institute for Applied Systems AnalysisLaxenburgAustria
  4. 4.Department of BiologyUniversity of BergenBergenNorway

Personalised recommendations