Acquisition of Lateralized Predation Behavior Associated with Development of Mouth Asymmetry in a Lake Tanganyika ScaleEating Cichlid Fish Yuichi Takeuchi1,2*, Michio Hori3, Shinya Tada4, Yoichi Oda2
1 Department of Anatomy, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan, 2 Graduate School of Science, Nagoya University, Aichi, Japan, 3 Department of Biological Science, Kyoto University, Kyoto, Japan, 4 Graduate School of Science and Engineering, Ehime University, Ehime, Japan * [email protected]
OPEN ACCESS Citation: Takeuchi Y, Hori M, Tada S, Oda Y (2016) Acquisition of Lateralized Predation Behavior Associated with Development of Mouth Asymmetry in a Lake Tanganyika Scale-Eating Cichlid Fish. PLoS ONE 11(1): e0147476. doi:10.1371/journal. pone.0147476 Editor: Walter Salzburger, University of Basel, SWITZERLAND Received: September 4, 2015 Accepted: January 5, 2016 Published: January 25, 2016 Copyright: © 2016 Takeuchi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract The scale-eating cichlid Perissodus microlepis with asymmetric mouth is an attractive model of behavioral laterality: each adult tears off scales from prey fishes’ left or right flanks according to the direction in which its mouth is skewed. To investigate the development of behavioral laterality and mouth asymmetry, we analyzed stomach contents and lower jawbone asymmetry of various-sized P. microlepis (22SL