A Foraging Cost of Migration for a Partially Migratory Cyprinid Fish

Chapman, Ben B.; Eriksen, Anders; Baktoft, Henrik; Brodersen, Jakob; Nilsson, Daniel; Hulthen, Kaj; Brönmark, Christer; Hansson, Lars-Anders; Grønkjær, Peter; Skov, Christian; Fenton, Brock (2013). A Foraging Cost of Migration for a Partially Migratory Cyprinid Fish. PLoS ONE, 8(5), e61223. 10.1371/journal.pone.0061223

[img]
Preview
Text
Chapman_etal_2013_PloSOne.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (419kB) | Preview

Migration has evolved as a strategy to maximise individual fitness in response to seasonally changing ecological and environmental conditions. However, migration can also incur costs, and quantifying these costs can provide important clues to the ultimate ecological forces that underpin migratory behaviour. A key emerging model to explain migration in many systems posits that migration is driven by seasonal changes to a predation/growth potential (p/g) trade-off that a wide range of animals face. In this study we assess a key assumption of this model for a common cyprinid partial migrant, the roach Rutilus rutilus, which migrates from shallow lakes to streams during winter. By sampling fish from stream and lake habitats in the autumn and spring and measuring their stomach fullness and diet composition, we tested if migrating roach pay a cost of reduced foraging when migrating. Resident fish had fuller stomachs containing more high quality prey items than migrant fish. Hence, we document a feeding cost to migration in roach, which adds additional support for the validity of the p/g model of migration in freshwater systems.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Cell Biology
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology

UniBE Contributor:

Nilsson, Daniel

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)

ISSN:

1932-6203

Submitter:

Marcel Häsler

Date Deposited:

12 Apr 2014 10:41

Last Modified:

18 Dec 2014 10:37

Publisher DOI:

10.1371/journal.pone.0061223

BORIS DOI:

10.7892/boris.44151

URI:

https://boris.unibe.ch/id/eprint/44151

Actions (login required)

Edit item Edit item
Provide Feedback