ISSN:
1365-2427
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
SUMMARY. 1. Body growth, reproduction and survivorship of Bosmina longirostris were monitored at four food concentrations (0.05, 0.10, 0,25 and 2.50 ing Cl−1) to examine the extent to which food concentration affects these life-history parameters.2. Food concentration had a significant effect on growth, and most of the reproductive parameters (size and age at maturation, brood size, instar duration and egg development time). More than 60% of animals died before maturation at the lowest food concentration, although most animals survived until maturation at other food concentrations.3. Change in life-history parameters resulted in a decrease in rate of population growth (r) from 0.310 to 0.020 day−1 with decreasing food concentration, showing that this cladoceran is highly food-limited in many lakes.4. Importance of the effect of food concentration on egg development time was emphasized in relation to analysis of natural populations.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2427.1991.tb00467.x
