Genetically inherited tolerance may unveil trait dominance patterns in an amphibian model.

ABSTRACT: Chemical contamination may cause genetic erosion in natural populations by wiping out the most sensitive genotypes. This is of upmost concern if the loss of genetic variability is irreversible due to contaminant-driven elimination of alleles, which may happen if tolerance is a recessive or incompletely dominant trait - the recessive tolerance inheritance (working-) hypothesis. Accordingly, this work investigated the tolerance inheritance to lethal levels of a metal-rich acid mine drainage (AMD) and to copper sulphate in a population of Pelophylax perezi. Time-to-death for each egg, after being exposed to 60% of a sample of acid mine drainage and to 9 mg/L Cu, was registered, and, for each egg mass, the median lethal time (LT₅₀) and respective quartiles (LT₂₅ and LT

SUBMITTER: Fasola E 

PROVIDER: S-EPMC6914805 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature