You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Lifetime Reproductive Success of Females of the Damselfly Coenagrion puella
Michael J. Banks and David J. Thompson
Journal of Animal Ecology
Vol. 56, No. 3 (Oct., 1987), pp. 815-832
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/4950
Page Count: 18
You can always find the topics here!Topics: Female animals, Eggs, Clutch size, Egg production, Body size, Mating behavior, Ponds, Insect larvae, Animal ecology, Weather
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
(1) Two inter-related studies are described, concerned with lifetime clutch production and determination of clutch size in the damselfly Coenagrion puella. The results of these studies are used to investigate lifetime reproductive success in terms of the females' evolutionary biology and population dynamics. (2) Most variation (70%) in reproductive success arises from variation in survival rather than variation in fecundity. (3) Variation in rate of clutch production accounts for 20% of the variation in reproductive success, and variation in clutch size for only 10%. (4) Females maximize their lifetime egg production by minimizing the interval between clutches, rather than by maximizing the size of each clutch. (5) Since females only engage in reproductive activity on warm, sunny days, weather has a marked effect on female egg production; bad weather means increased inter-clutch intervals and lower egg production. (6) Clutch size is inversely related to body size. However, because large females survive for longer than small females, selection should favour large size in females. (7) Egg size is not correlated with female size. (8) There may be a delayed density-dependent population regulatory process, acting through the reduction in adult female size caused by high larval population density.
Journal of Animal Ecology © 1987 British Ecological Society