Temporal changes in gene expression and genotype frequency of the ornithine decarboxylase gene in native silverside Basilichthys microlepidotus : Impact of wastewater reduction due to implementation of public policies

Evolutionary Applications
D VélizC Vega-Retter

Abstract

Human activity has caused a deterioration in the health and population size of riverine species; thus, public policies have been implemented to mitigate the anthropogenic impacts of water use, watercourse transformation, and pollution. We studied the Maipo River Basin, one of the most polluted with untreated wastewater in Chile, for a period of 12 years (2007-2019). Since the implementation of new public policies, including the operation of a wastewater collector (2012), the Maipo River Basin is currently much less polluted by untreated water than before. To analyze the impact of wastewater reduction in this river basin, we studied the native silverside (Basilichthys microlepidotus), which inhabits both polluted and unpolluted areas of the river basin. Previous studies reported the overexpression of the ornithine decarboxylase (odc) gene, heterozygote deficit, and high frequency of a homozygote odc genotype in silverside populations that inhabit wastewater-polluted sites, suggesting a phenotypic change and genotypic selection in response to pollution. Here, a population affected and another population unaffected by wastewater were studied before and after implementing the wastewater collector. The physicochemical data of water ...Continue Reading

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Citations

Jul 21, 2020·Evolutionary Applications·Anne-Laure FerchaudMaren Wellenreuther
Apr 30, 2021·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Kathleen M MunleyFernando Galvez

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Methods Mentioned

BETA
atomic absorption spectroscopy
PCA
PCAs
salt extraction
PCR
electrophoresis

Software Mentioned

DnaSP
Mira Assembler
Genetix
GeneMarker
Blastx
Bridger
BAYESASS
CD
Bowtie2
Cutadapt

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