Skip to main content

Seasonal bottlenecks in diet shifts and growth of smelt in a large eutrophic lake

Buy Article:

$51.00 plus tax (Refund Policy)


Seasonal growth of smelt Osmerus eperlanus was studied in the Kiihkelyksenselkä basin in the eutrophic Lake Hiidenvesi, southern Finland. The growth of age 1+ and 2+ year smelts was very low probably due to the discontinuous supply of large invertebrates Chaoborus flavicans and Mysis relicta. Diet shift back to zooplankton in autumn, suggested the existence of a bottleneck in the growth of these age groups. Slow growth rate was further intensified by the onset of maturity at age 2 years, combined with the high diet and habitat overlaps between similar‐sized 1+ and 2+ year smelts. Older 3+ and 4+ year smelts shifted to piscivory, i.e. cannibalism, during the growing season, which was seen as rapid increases in their growth rates.

Keywords: cannibalism; diet shift; echosounding; growth bottleneck; smelt

Document Type: Regular Paper


Affiliations: 1: Department of Limnology and Environmental Protection, P. O. Box 65, Viikki, FIN-00 014 University of Helsinki, Finland and 2: Finnish Environment Institute, P. O. Box 140, FIN-00 251 Helsinki, Finland

Publication date: 2004-02-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more