Testing optimal foraging theory in a penguin–krill system

by Yuuki Y. Watanabe, Motohiro Ito, and Akinori Takahashi

Proceedings BVolume 281(1779):20132376

March 22, 2014

©2014 by The Royal Society

Illustration and schematic diagram showing how optimal patch residence time will change in response to patch quality according to the MVT. (a) Consider an animal foraging in an

environment where prey patches are heterogeneously distributed.

Yuuki Y. Watanabe et al. Proc. R. Soc. B 2014;281:20132376

©2014 by The Royal Society

An example of successive diving activities, called a ‘dive bout’, of an Adélie penguin with the number of krill capture events in each dive.

Yuuki Y. Watanabe et al. Proc. R. Soc. B 2014;281:20132376

©2014 by The Royal Society

Gain function analyses.

Yuuki Y. Watanabe et al. Proc. R. Soc. B 2014;281:20132376

©2014 by The Royal Society

Partial regression plots (i.e. the relationship between the response variable and a predictor, with the other predictors held constant [20]) from a linear mixed model (dive duration = dive depth +

dive-scale patch quality + bout-scale patch quality) with bi...

Yuuki Y. Watanabe et al. Proc. R. Soc. B 2014;281:20132376

©2014 by The Royal Society