Original paper
Predator-induced escape response in Daphnia
Pijanowska, Joanna; Dawidowicz, Piotr; Weider, Lawrence J.
Archiv für Hydrobiologie Volume 167 Number 1-4 (2006), p. 77 - 87
44 references
published: Oct 5, 2006
DOI: 10.1127/0003-9136/2006/0167-0077
ArtNo. ESP141016770006, Price: 29.00 €
Abstract
We studied the effects of predator exudates on evasion efficiency in two Daphnia magna clones that differed in their sensitivity to the kairomones. Pre-exposure to kairomones significantly increased the chances of survival of sensitive Daphnia when confronted with actively-foraging invertebrate and vertebrate predators, as compared to individuals which had not been pre-exposed to predator chemical cues. The induced response is adaptive: predators foraging on a mixture of sensitized and nonsensitized individuals, first removed those which had not been pre-exposed, or were non-sensitive to predator exudates. Predator-induced escape responses, therefore, can be a target for selection.
Keywords
Daphnia • escape • sensitisation • alertness