Influence of predator and dietary chemical cues on the behaviour and shredding efficiency of Gammarus pulex
(2000) In Aquatic Ecology 34(4). p.379-387- Abstract
- In two laboratory experiments, we examined short- and long-term responses of the detritivorous amphipod Gammarus pulex to chemical cues from potential predators fed various diets. In the first experiment we studied the short-term effect on G. pulex (locomotory activity) when exposed to chemical cues from three co-existing predators; sculpin (Cottus gobio), trout (Salmo trutta), and signal crayfish (Pacifastacus leniusculus). Chemicals from sculpins and trout induced a short-term decrease in locomotory activity in G. pulex, whereas crayfish did not. There was no difference in activity between G. pulex exposed to water scented by trout or sculpin, and these responses were independent of predator diet (G. pulex, Asellus aquaticus and... (More)
- In two laboratory experiments, we examined short- and long-term responses of the detritivorous amphipod Gammarus pulex to chemical cues from potential predators fed various diets. In the first experiment we studied the short-term effect on G. pulex (locomotory activity) when exposed to chemical cues from three co-existing predators; sculpin (Cottus gobio), trout (Salmo trutta), and signal crayfish (Pacifastacus leniusculus). Chemicals from sculpins and trout induced a short-term decrease in locomotory activity in G. pulex, whereas crayfish did not. There was no difference in activity between G. pulex exposed to water scented by trout or sculpin, and these responses were independent of predator diet (G. pulex, Asellus aquaticus and starved). In the second experiment we examined whether longer-term exposure (4 week) to chemical cues from sculpins affects rates of leaf processing by G. pulex. During the first week, G. pulex consumed significantly more leaves in the control (i.e., no fish cue) than in the fish cue treatment. After 4 weeks, however, there was no difference in total leaf processing rate between treatments indicating an adaptation to the cue. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/150655
- author
- Åbjörnsson, Kajsa LU ; Dahl, Jonas LU ; Nyström, Per LU and Brönmark, Christer LU
- organization
- publishing date
- 2000
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Aquatic Ecology
- volume
- 34
- issue
- 4
- pages
- 379 - 387
- publisher
- Springer
- external identifiers
-
- scopus:0034439954
- ISSN
- 1386-2588
- DOI
- 10.1023/A:1011442331229
- language
- English
- LU publication?
- yes
- id
- 68f665e8-75b4-45c3-a814-5f0464bbce3d (old id 150655)
- date added to LUP
- 2016-04-01 11:43:51
- date last changed
- 2024-04-08 10:22:10
@article{68f665e8-75b4-45c3-a814-5f0464bbce3d, abstract = {{In two laboratory experiments, we examined short- and long-term responses of the detritivorous amphipod Gammarus pulex to chemical cues from potential predators fed various diets. In the first experiment we studied the short-term effect on G. pulex (locomotory activity) when exposed to chemical cues from three co-existing predators; sculpin (Cottus gobio), trout (Salmo trutta), and signal crayfish (Pacifastacus leniusculus). Chemicals from sculpins and trout induced a short-term decrease in locomotory activity in G. pulex, whereas crayfish did not. There was no difference in activity between G. pulex exposed to water scented by trout or sculpin, and these responses were independent of predator diet (G. pulex, Asellus aquaticus and starved). In the second experiment we examined whether longer-term exposure (4 week) to chemical cues from sculpins affects rates of leaf processing by G. pulex. During the first week, G. pulex consumed significantly more leaves in the control (i.e., no fish cue) than in the fish cue treatment. After 4 weeks, however, there was no difference in total leaf processing rate between treatments indicating an adaptation to the cue.}}, author = {{Åbjörnsson, Kajsa and Dahl, Jonas and Nyström, Per and Brönmark, Christer}}, issn = {{1386-2588}}, language = {{eng}}, number = {{4}}, pages = {{379--387}}, publisher = {{Springer}}, series = {{Aquatic Ecology}}, title = {{Influence of predator and dietary chemical cues on the behaviour and shredding efficiency of Gammarus pulex}}, url = {{http://dx.doi.org/10.1023/A:1011442331229}}, doi = {{10.1023/A:1011442331229}}, volume = {{34}}, year = {{2000}}, }