ArticleJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2021
Visual discrimination and resolution in freshwater stingrays (Potamotrygon motoro).
Article in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Smart sharks: a review of chondrichthyan cognition.Animal cognition · 2023Review
- Cichlids and stingrays can add and subtract 'one' in the number space from one to five.Scientific reports · 2022Article
- A shark's eye view: testing the 'mistaken identity theory' behind shark bites on humans.Journal of the Royal Society, Interface · 2021Article
- Counting on Numbers-Numerical Abilities in Grey Bamboo Sharks and Ocellate River Stingrays.Animals : an open access journal from MDPI · 2021Article
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Authors and funding
4 authors.
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Abstract
Potamotrygon motoro has been shown to use vision to orient in a laboratory setting and has been successfully trained in cognitive behavioral studies using visual stimuli. This study explores P. motoro's visual discrimination abilities in the context of two-alternative forced-choice experiments, with a focus on shape and contrast, stimulus orientation, and visual resolution. Results support that stingrays are able to discriminate stimulus-presence and -absence, overall stimulus contrasts, two forms, horizontal from vertical stimulus orientations, and different colors that also vary in brightness. Stingrays tested in visual resolution experiments demonstrated a range of visual acuities from < 0.13 to 0.23 cpd under the given experimental conditions. Additionally, this report includes the first evidence for memory retention in this species.
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