Population variation in lateralized eye use in the poeciliid Brachyraphis episcopi

C. Brown, C. Gardner, Victoria Ann Braithwaite-Read

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Differential use of each hemisphere of the brain for specific tasks is a widespread phenomenon that appears to have arisen in the early history of tetrapod lineage. Despite a high degree of conformity in the development of lateralization among the tetrapods, some variation exists. The mechanisms underlying this variation remain largely unresolved. We exposed fish from regions of high and low predation pressure to a series of visual experiences, including viewing an empty compartment, a novel object and a live predator. Fish from each region differed in their preferential use of each eye to view the scenes. For example, fish from high predation regions viewed a live predator by using their right eye, whereas fish from low predation sites showed no eye preference. These results suggest that the degree of lateralization varies between populations of the same species that have been exposed to different ecological/evolutionary pressures.

Original languageEnglish (US)
JournalProceedings of the Royal Society B: Biological Sciences
Volume271
Issue numberSUPPL. 6
DOIs
StatePublished - Dec 7 2004

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Fish
Fishes
eyes
tetrapod
predation
fish
Population
predator
predators
Pressure
brain
Brain
History
history

All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Immunology and Microbiology(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)

Cite this

Brown, C. ; Gardner, C. ; Braithwaite-Read, Victoria Ann. / Population variation in lateralized eye use in the poeciliid Brachyraphis episcopi. In: Proceedings of the Royal Society B: Biological Sciences. 2004 ; Vol. 271, No. SUPPL. 6.
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Population variation in lateralized eye use in the poeciliid Brachyraphis episcopi. / Brown, C.; Gardner, C.; Braithwaite-Read, Victoria Ann.

In: Proceedings of the Royal Society B: Biological Sciences, Vol. 271, No. SUPPL. 6, 07.12.2004.

Research output: Contribution to journalArticle

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