We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of hatching date, vertical distribution, and interannual variation in physical forcing on northward displacement and temperature conditions of Norwegian spring-spawning herring larvae.
- Authors
Vikebø, Frode B.; Husebø, Ase; Slotte, Aril; Stenevik, Erling Kåre; Lien, Vidar S.
- Abstract
Vikebø, F. B., Husebø, Å., Slotte, A., Stenevik, E. K., and Lien, V. S. 2010. Effect of hatching date, vertical distribution, and interannual variation in physical forcing on northward displacement and temperature conditions of Norwegian spring-spawning herring larvae. – ICES Journal of Marine Science, 67: 1948–1956.Early hatching has been shown to be associated with increased survival of Norwegian spring-spawning herring (Clupea harengus) larvae. We investigated whether the process behind this association is related to larval drift and ambient temperature. A three-dimensional hydrodynamic model was used to simulate the effect of hatching date on northward displacement and temperature conditions of larvae from spawning grounds off western Norway for 1989–2008. The simulations revealed that the displacement during a period of 60 d was greatest if the larvae hatched early in the season and if they were located near the surface. The relationship between drift speed and ambient temperature was significantly negative, but less so later in the season, because the coastal current became progressively warmer. Results from the simulated interannual variations in larval drift compared with the observed survival suggest that a rapid northward displacement to the main nursery area in the Barents Sea is more important for larval survival than ambient temperature. The significant effect of northward displacement on survival could be explained by reduced overlap with predators and/or higher prey densities, but the causal processes involved remain to be investigated.
- Subjects
NORWAY; SPAWNING; ATLANTIC herring; CLUPEA; LARVAE
- Publication
ICES Journal of Marine Science / Journal du Conseil, 2010, Vol 67, Issue 9, p1948
- ISSN
1054-3139
- Publication type
Article
- DOI
10.1093/icesjms/fsq084