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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
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| one publication added to basket [293665] |
Exposure to agricultural pesticide impairs visual lateralization in a larval coral reef fish
Besson, M.; Gache, C.; Bertucci, F.; Brooker, R.M.; Roux, N.; Jacob, H.; Berthe, C.; Sovrano, V.A.; Dixson, D.L.; Lecchini, D. (2017). Exposure to agricultural pesticide impairs visual lateralization in a larval coral reef fish. NPG Scientific Reports 7: 9165. https://dx.doi.org/10.1038/s41598-017-09381-0
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, meer
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| Auteurs | | Top |
- Besson, M.
- Gache, C.
- Bertucci, F., meer
- Brooker, R.M.
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- Roux, N.
- Jacob, H.
- Berthe, C.
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- Sovrano, V.A.
- Dixson, D.L.
- Lecchini, D.
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| Abstract |
Lateralization, i.e. the preferential use of one side of the body, may convey fitness benefits for organisms within rapidly-changing environments, by optimizing separate and parallel processing of different information between the two brain hemispheres. In coral reef-fishes, the movement of larvae from planktonic to reef environments (recruitment) represents a major life-history transition. This transition requires larvae to rapidly identify and respond to sensory cues to select a suitable habitat that facilitates survival and growth. This ‘recruitment’ is critical for population persistence and resilience. In aquarium experiments, larval Acanthurus triostegus preferentially used their right-eye to investigate a variety of visual stimuli. Despite this, when held in in situ cages with predators, those larvae that previously favored their left-eye exhibited higher survival. These results support the “brain’s right-hemisphere” theory, which predicts that the right-eye (i.e.left-hemisphere) is used to categorize stimuli while the left-eye (i.e.right-hemisphere) is used to inspect novel items and initiate rapid behavioral-responses. While these experiments confirm that being highly lateralized is ecologically advantageous, exposure to chlorpyrifos, a pesticide often inadvertently added to coral-reef waters, impaired visual-lateralization. This suggests that chemical pollutants could impair the brain function of larval fishes during a critical life-history transition, potentially impacting recruitment success. |
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