Pupil dilation and constriction in the skate Leucoraja erinacea in a simulated natural light field.

ABSTRACT: The skate Leucoraja erinacea has an elaborately shaped pupil, whose characteristics and functions have received little attention. The goal of our study was to investigate the pupil response in relation to natural ambient light intensities. First, we took a recently developed sensory-ecological approach, which gave us a tool for creating a controlled light environment for behavioural work: during a field survey, we collected a series of calibrated natural habitat images from the perspective of the skates' eyes. From these images, we derived a vertical illumination profile using custom-written software for quantification of the environmental light field (ELF). After collecting and analysing these natural light field data, we created an illumination set-up in the laboratory, which closely sim

SUBMITTER: Mathger LM 

PROVIDER: S-EPMC10215813 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature