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URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1401
Centro Nacional de Pesquisa e Conservação de Répteis e Anfíbios
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3 resultados
Resultados da Pesquisa
Item Assessing Pantanal fauna through environmental DNA metabarcoding after the 2020 megafire(Biodiversidade Brasileira, 2024) Luanne Helena Augusto Lima; Marcelo Magioli; Bruno H. Saranholi; Henrique Villas Boas Concone; Lara Gomes Côrtes; Christian Niel BerlinckThe environmental DNA (eDNA) metabarcoding is a methodology that, from environmental samples such as soil, water, air, and others, enables the simultaneous identification of multiple species, thus allowing for large-scale mapping of biological diversity in a specific study area. Due to its non-invasive sampling approach, where species are detected from the traces they leave in the environment, eliminating the need to isolate and capture organisms, eDNA metabarcoding emerges as a valuable tool in conservation strategies. This study aims to explore the use of eDNA methodology for biodiversity monitoring and environmental impact assessment caused by the 2020 megafire in the Pantanal of Brazil, focusing on vertebrates. Environmental samples were collected at two protected areas and their surrounding areas, Taiamã Ecological Station (TES) and Pantanal Matogrossense National Park (PMNP), Mato Grosso, Brazil. We identified in TES, 27 mammals, 56 fishes, 12 birds, 4 amphibians, and 4 reptiles, while in PMNP, 43 mammals, 45 fishes, 126 birds, 19 amphibians, and 11 reptiles. Soil sampling proved to be more efficient compared to water sampling: 26 species were exclusively identified in soil samples, while 9 were attributed to water samples. Here, we demonstrated that the primer 12SV5 only a superior efficacy in identifying mammal and herpetofauna species compared to the other markers used (16Smam and MiBird). Moreover, we confirmed the complementary role of eDNA alongside camera trapping, and its advantage to estimate species richness with a single field expedition. We stress the need to optimize sample collection methods for the target group and to reduce the influence of contamination and water flow. This study highlights the importance of eDNA methodology as a crucial tool for biodiversity monitoring and environmental impact assessment, enabling rapid access to biodiversity and long-term monitoring.Item Lagartos como espécies indicadoras para o monitoramento em uma unidade de conservação na Caatinga(2025) Flávia Regina de Queiroz Batista; Aline Richter; Bruna Arbo Menezes; Paula Ribeiro Anunciação; Hugo Bonfim de Arruda Pinto; Arnaldo José Correia Magalhães Júnior; Paulo de Marco Júnior; Lara Gomes CôrtesDurante nove anos, foi realizado o monitoramento de lagartos na Estação Ecológica Raso da Catarina abrangendo as fitofisionomias de caatinga arbórea e caatinga arbórea-arbustiva. Testamos e aperfeiçoamos um protocolo de monitoramento a ser integrado à caixa de ferramentas do Programa Monitora. Este estudo buscou responder a questões cruciais para viabilizar o monitoramento de lagartos em áreas protegidas através deste programa, incluindo a identificação da composição de espécies e aquelas que funcionam como indicadoras para o protocolo proposto. Os principais objetivos buscaram responder: (1) se existiam comunidades características de cada fitofisionomia; (2) se havia espécies indicadoras específicas para essas fitofisionomias; e (3) se houve variação na dinâmica populacional das espécies indicadoras ao longo dos anos. Para tanto, foi utilizado o método de captura com a utilização de armadilhas de interceptação e queda (pitfall-traps) para levantamento de espécies em campo. Foram utilizados modelos lineares generalizados mistos para avaliar se existiam diferenças na riqueza e na abundância das fitofisionomias estudadas. Para avaliar a diferença na composição entre as fitofisionomias, utilizamos uma análise multivariada permutacional de variância(PERMANOVA) usando matrizes de distância.Item Leveraging genomes to support conservation and bioeconomy policies in a megadiverse country(Cell Genomics, 2024-11) Sibelle Torres Vilaça; Amanda F. Vidal; Ana Carolina D’Oliveira Pavan; Bruno Marques Silva; Carolina S. Carvalho; Cintia Povill; Danielle Luna-Lucena; Gisele L. Nunes; Henrique Vieira Figueiró; Izabela Santos Mendes; Jose Augusto P. Bittencourt; Lara Gomes Côrtes; Lucas Eduardo Costa Canesin; Renato R.M. Oliveira; Roberta P. Damasceno; Santelmo Vasconcelos; Silvia B. Barreto; Valeria Tavares; Guilherme Oliveira; Amely Branquinho Martins; Alexandre AleixoThe biodiversity crisis is a global phenomenon, and measures to monitor, stop, and revert the impacts on species’ extinction risk are urgently needed. Megadiverse countries, especially in the Global South, are responsible for managing and protecting Earth’s biodiversity. Various initiatives have started to sequence reference-level genomes or perform large-scale species detection and monitoring through environmental DNA. Here, we outline the Genomics of the Brazilian Biodiversity (GBB) consortium that is contributing to public policies on the conservation and management of Brazilian species. We describe our unique public-private governance and lessons in setting up a genomic consortium in a megadiverse country of continental scale. We explore the challenges while sharing knowledge for similar initiatives in the Global South. Ultimately, we aim to encourage Brazilian institutions and other megadiverse countries to invest and participate in large-scale genomic initiatives, demonstrating their commitment to preserving and monitoring their exceptional natural heritage while contributing to global biodiversity conservation.