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La Rochelle Univ.[Affiliation] Publications | LitMetric

5 results match your criteria: "La Rochelle Univ.[Affiliation]"

Article Synopsis
  • UV filters in sunscreens are becoming pollutants in coastal waters, raising concerns about their effects on marine life.
  • This study examined how exposure to commercial sunscreen formulations affects the gut and skin microbial communities of mullet fish, revealing unique bacterial profiles for each tissue type.
  • The presence of sunscreen altered the abundance of certain bacterial groups and allowed harmful bacteria to colonize fish skin, potentially impacting the health of the fish.
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There is increasing evidence for the involvement of epigenetics in sex determination, maintenance, and plasticity, from plants to humans. In our previous work, we reported a transgenerational feminization of a zebrafish population for which the first generation was exposed to cadmium, a metal with endocrine disrupting effects. In this study, starting from the previously performed whole methylome analysis, we focused on the gene and hypothesized that it could be involved in sex differentiation and Cd-induced offspring feminization.

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Evidence has emerged that environmentally-induced epigenetic changes can have long-lasting effects on gene transcription across generations. These recent findings highlight the need to investigate the transgenerational impacts of pollutants to assess their long term effects on populations. In this study, we investigated the transgenerational effect of cadmium on zebrafish across 4 generations.

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North Atlantic winter cyclones starve seabirds.

Curr Biol

September 2021

Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS/La Rochelle Univ, La Rochelle, France; Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, Rondebosch, South Africa. Electronic address:

Each winter, the North Atlantic Ocean is the stage for numerous cyclones, the most severe ones leading to seabird mass-mortality events called "winter wrecks." During these, thousands of emaciated seabird carcasses are washed ashore along European and North American coasts. Winter cyclones can therefore shape seabird population dynamics by affecting survival rates as well as the body condition of surviving individuals and thus their future reproduction.

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Article Synopsis
  • Sex determination in zebrafish can be influenced by environmental factors, such as exposure to cadmium (Cd) and temperature, which can lead to shifts in population sex ratios.
  • Research shows that exposure to Cd resulted in increased methylation of certain genes, leading to a trend towards feminization over generations, especially under heat stress conditions.
  • The study highlights the role of epigenetic mechanisms, particularly DNA methylation, in shaping sex ratios and suggests that parental environments can affect offspring development and sex determination.*
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