Escaping peril: perceived predation risk affects migratory propensity.
(2015) In Biology letters 11(8).- Abstract
- Although migratory plasticity is increasingly documented, the ecological drivers of plasticity are not well understood. Predation risk can influence migratory dynamics, but whether seasonal migrants can adjust their migratory behaviour according to perceived risk is unknown. We used electronic tags to record the migration of individual roach (Rutilus rutilus), a partially migratory fish, in the wild following exposure to manipulation of direct (predator presence/absence) and indirect (high/low roach density) perceived predation risk in experimental mesocosms. Following exposure, we released fish in their lake summer habitat and monitored individual migration to connected streams over an entire season. Individuals exposed to increased... (More)
- Although migratory plasticity is increasingly documented, the ecological drivers of plasticity are not well understood. Predation risk can influence migratory dynamics, but whether seasonal migrants can adjust their migratory behaviour according to perceived risk is unknown. We used electronic tags to record the migration of individual roach (Rutilus rutilus), a partially migratory fish, in the wild following exposure to manipulation of direct (predator presence/absence) and indirect (high/low roach density) perceived predation risk in experimental mesocosms. Following exposure, we released fish in their lake summer habitat and monitored individual migration to connected streams over an entire season. Individuals exposed to increased perceived direct predation risk (i.e. a live predator) showed a higher migratory propensity but no change in migratory timing, while indirect risk (i.e. roach density) affected timing but not propensity showing that elevated risk carried over to alter migratory behaviour in the wild. Our key finding demonstrates predator-driven migratory plasticity, highlighting the powerful role of predation risk for migratory decision-making and dynamics. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7834289
- author
- Hulthén, Kaj LU ; Chapman, Ben LU ; Nilsson, Anders LU ; Vinterstare, Jerker LU ; Hansson, Lars-Anders LU ; Skov, Christian ; Brodersen, Jakob ; Baktoft, Henrik and Brönmark, Christer LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Biology letters
- volume
- 11
- issue
- 8
- article number
- 20150466
- publisher
- Royal Society Publishing
- external identifiers
-
- pmid:26311158
- wos:000362798100003
- scopus:84946601324
- pmid:26311158
- ISSN
- 1744-9561
- DOI
- 10.1098/rsbl.2015.0466
- language
- English
- LU publication?
- yes
- id
- 997eb3f7-7fd9-45e4-a2ff-3843afdfedea (old id 7834289)
- date added to LUP
- 2016-04-01 10:19:07
- date last changed
- 2024-02-21 13:50:29
@article{997eb3f7-7fd9-45e4-a2ff-3843afdfedea, abstract = {{Although migratory plasticity is increasingly documented, the ecological drivers of plasticity are not well understood. Predation risk can influence migratory dynamics, but whether seasonal migrants can adjust their migratory behaviour according to perceived risk is unknown. We used electronic tags to record the migration of individual roach (Rutilus rutilus), a partially migratory fish, in the wild following exposure to manipulation of direct (predator presence/absence) and indirect (high/low roach density) perceived predation risk in experimental mesocosms. Following exposure, we released fish in their lake summer habitat and monitored individual migration to connected streams over an entire season. Individuals exposed to increased perceived direct predation risk (i.e. a live predator) showed a higher migratory propensity but no change in migratory timing, while indirect risk (i.e. roach density) affected timing but not propensity showing that elevated risk carried over to alter migratory behaviour in the wild. Our key finding demonstrates predator-driven migratory plasticity, highlighting the powerful role of predation risk for migratory decision-making and dynamics.}}, author = {{Hulthén, Kaj and Chapman, Ben and Nilsson, Anders and Vinterstare, Jerker and Hansson, Lars-Anders and Skov, Christian and Brodersen, Jakob and Baktoft, Henrik and Brönmark, Christer}}, issn = {{1744-9561}}, language = {{eng}}, number = {{8}}, publisher = {{Royal Society Publishing}}, series = {{Biology letters}}, title = {{Escaping peril: perceived predation risk affects migratory propensity.}}, url = {{http://dx.doi.org/10.1098/rsbl.2015.0466}}, doi = {{10.1098/rsbl.2015.0466}}, volume = {{11}}, year = {{2015}}, }