Mangrove rivulus, Kryptolebias marmoratus, is a hermaphrodite fish capable of self-fertilization. This particularity allows to naturally produce highly homozygous and isogenic individuals. Despite the low genetic diversity, rivulus can live in extremely variable environments and adjust its phenotype accordingly. This species represents a unique opportunity to clearly distinguish the genetic and non-genetic factors implicated in adaptation and evolution, such as epigenetic mechanisms. It is thus a great model in aquatic ecotoxicology to investigate the effects of xenobiotics on the epigenome, and their potential long-term impacts. In the present study, we used the mangrove rivulus to investigate the effects of the neurotoxin b-N-methylamino-L-alanine (BMAA) on larvae behaviors after 7 days exposure to two sub-lethal concentrations. Results show that BMAA can affect the maximal speed and prey capture (trials and failures), suggesting potential impacts on the organism's fitness.
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Thèses de l'étudiant
Characterization of the brain molecular bases of personalities and assessment of their developmental plasticity in response to environmental stressors using an emerging model fish species, the mangrove rivulus, Kryptolebias marmoratusAuteur: CARION, A., 9 sept. 2020
Superviseur: SILVESTRE, F. (Promoteur), Denoël, M. (Personne externe) (Copromoteur), Depiereux, E. (Président), Earley, R. L. (Personne externe) (Jury), Aron, S. (Personne externe) (Jury), Prud'homme, S. (Personne externe) (Jury) & Voisin, A. (Jury)
Student thesis: Doc types › Docteur en SciencesFichier