PUBLICATION
Diminished foraging performance of a mutant zebrafish with reduced population of ultraviolet cones
- Authors
- Novales Flamarique, I.
- ID
- ZDB-PUB-160305-15
- Date
- 2016
- Source
- Proceedings. Biological sciences 283(1826): 20160058 (Journal)
- Registered Authors
- Keywords
- foraging, retina, ultraviolet cone, zebrafish
- MeSH Terms
-
- Animals
- Feeding Behavior*
- Mutation
- Retinal Cone Photoreceptor Cells/physiology*
- Ultraviolet Rays*
- Visual Perception*
- Zebrafish/genetics
- Zebrafish/physiology*
- PubMed
- 26936243 Full text @ Proc. Biol. Sci.
Citation
Novales Flamarique, I. (2016) Diminished foraging performance of a mutant zebrafish with reduced population of ultraviolet cones. Proceedings. Biological sciences. 283(1826):20160058.
Abstract
Ultraviolet (UV) cones are photoreceptors that sense light in the range 300-450 nm and are found in the retinas of non-mammalian vertebrates and small mammals. Despite their widespread presence across taxa, the functions that these cones exert in the lives of animals remain largely unknown. In this study, I used the zebrafish lor (lots of rods) mutant, characterized by a diminished UV cone population compared to that of wild-type zebrafish, to test whether its foraging performance differed from that of the wild-type (control). The mean location distance and angle (variables that are reliable indicators of foraging performance) at which control fish detected zooplankton prey were, on average, 24 and 90% greater than corresponding measures for lor fish. Such inferior foraging performance of the mutant could be explained by reduced contrast perception of the prey, resulting from the diminished population of UV cones and associated sensitivity. Thus, UV cones enhance the foraging performance of zebrafish, a crucial ecological function that may explain why small zooplanktivorous fishes retain UV cones throughout their lives.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping