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

$48.00 plus tax (Refund Policy)

Download / Buy Article:


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: February 1, 2004

Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect 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