Fish larval recruitment to reefs is a thyroid hormone-mediated metamorphosis sensitive to the pesticide chlorpyrifos - HAL Accéder directement au contenu
Article dans une revue eLife Année : 2017

Fish larval recruitment to reefs is a thyroid hormone-mediated metamorphosis sensitive to the pesticide chlorpyrifos

Résumé

Larval recruitment, the transition of pelagic larvae into reef-associated juveniles, is a critical step for the resilience of marine fish populations but its molecular control is unknown. Here, we investigate whether thyroid-hormones (TH) and their receptors (TR) coordinate the larval recruitment of the coral-reef-fish Acanthurus triostegus. We demonstrate an increase of TH-levels and TR-expressions in pelagic-larvae, followed by a decrease in recruiting juveniles. We generalize these observations in four other coral reef-fish species. Treatments with TH or TR-antagonist, as well as relocation to the open-ocean, disturb A. triostegus larvae transformation and grazing activity. Likewise, chlorpyrifos, a pesticide often encountered in coral-reefs, impairs A. triostegus TH-levels, transformation, and grazing activity, hence diminishing this herbivore’s ability to control the spread of reef-algae. Larval recruitment therefore corresponds to a TH-controlled metamorphosis, sensitive to endocrine disruption. This provides a framework to understand how larval recruitment, critical to reef-ecosystems maintenance, is altered by anthropogenic stressors.
Fichier principal
Vignette du fichier
elife-27595-v1.pdf ( 3.67 Mo ) Télécharger
Origine : Publication financée par une institution
Loading...

Dates et versions

hal-01633712, version 1 (13-11-2017)

Licence

Paternité - CC BY 4.0

Identifiants

Citer

Guillaume Holzer, Marc Besson, Anne Lambert, Loïc François, Paul Barth, et al.. Fish larval recruitment to reefs is a thyroid hormone-mediated metamorphosis sensitive to the pesticide chlorpyrifos. eLife, 2017, 6, pp.e27595. ⟨10.7554/eLife.27595⟩. ⟨hal-01633712⟩
794 Consultations
178 Téléchargements
Dernière date de mise à jour le 07/04/2024
comment ces indicateurs sont-ils produits

Altmetric

Partager

Gmail Facebook Twitter LinkedIn Plus