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Growth of larval and juvenile perch: the importance of diet and fish density

Romare, Pia LU (2000) In Journal of Fish Biology 56(4). p.876-889
Abstract
In August, growth rate of young-of-the-year (YOY) perch in lake enclosures could be explained by both YOY density and mean cladoceran biomass, suggesting that in a lake where YOY perch are dominant, growth may be density dependent in late summer and mediated through top-down control on daphnid biomass. In June, growth rate of YOY perch could not be fully explained by YOY density or by mean cladoceran biomass, suggesting that growth and survival during the first part of the summer is negatively affected by a diet of Bosmina and cyclopoid copepods only. The experiments also suggest why YOY perch have a slow growth and a low abundance in eutrophic lakes where small zooplankton dominate. The June experiment also indicated that growth of late... (More)
In August, growth rate of young-of-the-year (YOY) perch in lake enclosures could be explained by both YOY density and mean cladoceran biomass, suggesting that in a lake where YOY perch are dominant, growth may be density dependent in late summer and mediated through top-down control on daphnid biomass. In June, growth rate of YOY perch could not be fully explained by YOY density or by mean cladoceran biomass, suggesting that growth and survival during the first part of the summer is negatively affected by a diet of Bosmina and cyclopoid copepods only. The experiments also suggest why YOY perch have a slow growth and a low abundance in eutrophic lakes where small zooplankton dominate. The June experiment also indicated that growth of late larval or early juvenile perch improved when a larger cladoceran became available and was included in the diet. (C) 2000 The Fisheries Society of the British Isles. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Fish Biology
volume
56
issue
4
pages
876 - 889
publisher
Wiley-Blackwell
external identifiers
  • scopus:0033863476
ISSN
0022-1112
DOI
10.1006/jfbi.1999.1208
language
English
LU publication?
yes
id
4a1d0783-91a3-46f2-b4dd-2a40e5717305 (old id 146723)
date added to LUP
2007-06-29 07:28:37
date last changed
2017-01-01 05:09:54
@article{4a1d0783-91a3-46f2-b4dd-2a40e5717305,
  abstract     = {In August, growth rate of young-of-the-year (YOY) perch in lake enclosures could be explained by both YOY density and mean cladoceran biomass, suggesting that in a lake where YOY perch are dominant, growth may be density dependent in late summer and mediated through top-down control on daphnid biomass. In June, growth rate of YOY perch could not be fully explained by YOY density or by mean cladoceran biomass, suggesting that growth and survival during the first part of the summer is negatively affected by a diet of Bosmina and cyclopoid copepods only. The experiments also suggest why YOY perch have a slow growth and a low abundance in eutrophic lakes where small zooplankton dominate. The June experiment also indicated that growth of late larval or early juvenile perch improved when a larger cladoceran became available and was included in the diet. (C) 2000 The Fisheries Society of the British Isles.},
  author       = {Romare, Pia},
  issn         = {0022-1112},
  language     = {eng},
  number       = {4},
  pages        = {876--889},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Fish Biology},
  title        = {Growth of larval and juvenile perch: the importance of diet and fish density},
  url          = {http://dx.doi.org/10.1006/jfbi.1999.1208},
  volume       = {56},
  year         = {2000},
}