Seeing red: Color vision in the largemouth bass

摘要: How animals visually perceive the environment is key to understanding important ecological behaviors, such as predation, foraging, and mating. This study focuses on visual system properties perception of color in largemouth bass Micropterus salmoides. (1) documents number spectral sensitivity photoreceptors, (2) uses these parameters model perception, (3) tests using a behavioral assay. Bass possess single cone cells maximally sensitive at 535 nm, twin 614 rod 528 nm. A simple predicted that should not be able discern between chartreuse yellow white nor green blue. In contrast, red from all achromatic (i.e., gray scale) stimuli. These predictions were partially upheld trials. trials, first trained recognize target receive food reward, then tested their ability differentiate similar brightness. could easily training other colors for brightness (white black, respectively). shows dichromatic vision do use chromatic color) cues making visual-based decisions.