Isolated mycobiota from carcasses of wild animals run over on Highway 493 in Seropédica, Rio de Janeiro, Brazil

The ''barrier effect'' is caused by the intense construction of highways in the present day. It's a phenomenon that modifies the dynamics of circulation and disperses animal communities, isolating them on both sides of the highways and reducing the gene flow of the population. In order to evaluate its impact, over a period of two years, the monitoring of the wild fauna run over on a federal highway in Seropédica, Rio de Janeiro, Brazil was carried out. Samples of animals found dead were identified and sown on mycological culture media, and the fungi were later identified. The three most frequently found animal species were, respectively: bat (Ordem Chiroptera), opossum (Didelphis aurita), and capybara (Hidrochoerus hidrochaeris). A great diversity of fungi was found in all the 55 samples of cadaveric remains from the carcasses found throughout the period - different species belonging to more than 10 fungal genera, including Mucor sp. and Rhyzopus sp. (belonging to the Order Mucorales), Aspergillus sp., Acremonium sp., Cladosporium sp. and Fusarium sp. (These last 4 belong to the phylum Ascomycota). This study solidifies the understanding about the impacts caused by anthropic expansion on Brazilian fauna and the succession of mycoobiota in cadaveric decomposition.