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Differential life history responses of several pelagic Daphnia clones differing in migratory behaviour

Differential life history responses of several pelagic Daphnia clones differing in migratory... Females of the hybrid Daphnia galeata × hyalina were isolated from a natural population in Lake Maarsseveen and from these individuals clones were cultured in the laboratory. Some clones were assumed to be migrating and some non-migrating. Life history experiments were performed with these clones in the presence and absence of fish kairomones. Results show that clones differed in life history strategy in concert with their presumed migration strategies which suggests a link between life history and behaviour. However, no sharp border exists between migrating and non-migrating clones since a gradual response pattern was found for the traits investigated. In the absence of fish kairomones, the relation between length at maturity and number of eggs was found to differ between the clones of the non-migrating and the migrating group. The latter had a lower number of eggs at similar length values. In the presence of fish kairomones, the length–clutch size relation was the same. However, non-migrating clones were smaller at the age at maturity and had fewer eggs. Although clones of both groups were thus found to differ significantly, overlap existed. Age at maturity was found to be the same. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Ecology Springer Journals

Differential life history responses of several pelagic Daphnia clones differing in migratory behaviour

Reede, Tineke; Ringelberg, Joop
Aquatic Ecology , Volume 32 (3) – Sep 30, 2004
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References (52)

Publisher
Springer Journals
Copyright
Copyright © 1998 by Kluwer Academic Publishers
Subject
Life Sciences; Freshwater & Marine Ecology; Ecosystems
ISSN
1386-2588
eISSN
1573-5125
DOI
10.1023/A:1009968311604
Publisher site
See Article on Publisher Site

Abstract

Females of the hybrid Daphnia galeata × hyalina were isolated from a natural population in Lake Maarsseveen and from these individuals clones were cultured in the laboratory. Some clones were assumed to be migrating and some non-migrating. Life history experiments were performed with these clones in the presence and absence of fish kairomones. Results show that clones differed in life history strategy in concert with their presumed migration strategies which suggests a link between life history and behaviour. However, no sharp border exists between migrating and non-migrating clones since a gradual response pattern was found for the traits investigated. In the absence of fish kairomones, the relation between length at maturity and number of eggs was found to differ between the clones of the non-migrating and the migrating group. The latter had a lower number of eggs at similar length values. In the presence of fish kairomones, the length–clutch size relation was the same. However, non-migrating clones were smaller at the age at maturity and had fewer eggs. Although clones of both groups were thus found to differ significantly, overlap existed. Age at maturity was found to be the same.

Journal

Aquatic Ecology – Springer Journals

Published: Sep 30, 2004

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