Results 11 to 20 of about 883 (114)

Can a Top Predator Persist After One of the World's Largest Mining Dam Failures? Occupancy Dynamics of the Neotropical Otter in Brazil's Paraopeba River. [PDF]

Ecol Evol
We evaluated the effects of the 2019 Brumadinho tailings‐dam collapse on neotropical otters (Lontra longicaudis) in Brazil's Paraopeba river using multi‐season occupancy models. Six years post‐collapse, otters showed high occupancy across impacted reaches.
Massara RL, Santos PM, Stumpp R, Costa AS, Rodrigues JR, Meiga AYY, Solar RRC, Moura MN, Dornas T, Cäsar C, Paglia A.   +10 more
europepmc   +2 more sources

Risk of local extinction and genetic diversity of Melipona quadrifasciata (Apidae: Meliponini) in a possible Northeastern limit of its distribution in Brazil

Sociobiology, 2016
Rapid loss of genetic diversity among eusocial bees, and extinction of their local population has become a major world concern. Populations of M. quadrifasciata have increasingly declined due to predatory extractivism and destruction of their habitat ...
Edilson D Araújo, Rosane Gomes Oliveira, Higor Cesar Meneses Calazans, Carina Caroline Silva França, Valdson SANTOS, Sona Arun Jain, Marcus Vinícius Aragão Batista, Lorena Andrade Nunes, Genésio Tamara Ribeiro   +8 more
doaj   +1 more source

VARIABILIDADE GENÉTICA EM POPULAÇÕES DE IPÊ-ROXO - Tabebuia heptaphylla (Vell.) Tol. - PARA CONSERVAÇÃO "EX SITU"

Revista do Instituto Florestal, 1996
Populações de Tabebuia heptaphylla - ipê-roxo - foram avaliadas através de -testes de progênies para detectar a existência de variabilidade genética e a suficiência dessa variabilidade para conservação "cx situ" dos recursos genéticos da espécie.
Lígia de Castro Ettori, Ana Cristina Machado De Franco Siqueira, Aida Sanae Sato, Ostenildo Ribeiro Campos   +3 more
doaj   +1 more source

A Perspective of Molecular Cytogenomics, Toxicology, and Epigenetics for the Increase of Heterochromatic Regions and Retrotransposable Elements in Tambaqui (Colossoma macropomum) Exposed to the Parasiticide Trichlorfon

Animals, 2022
Rex retroelements are the best-known transposable elements class and are broadly distributed through fish and also individual genomes, playing an important role in their evolutionary dynamics.
Maria dos Santos Costa, Hallana Cristina Menezes da Silva, Simone Cardoso Soares, Ramon Marin Favarato, Eliana Feldberg, Ana Lúcia Silva Gomes, Roberto Ferreira Artoni, Daniele Aparecida Matoso   +7 more
doaj   +1 more source

Caracterização genética de populações naturais de goiabeira serrana (Acca sellowiana) com marcadores microssatélites heterólogos

Biotemas, 2011
A goiabeira serra Acca sellowiana é uma espécie nativa do sul do Brasil e nordestete do Uruguai e devido ao sabor único de seus frutos apresenta-se como alternativa de renda para pequenos agricultores. O conhecimento da diversidade genética se constitui
Karine Louise dos Santos, Jean Pierre Henri Joseph Ducroquet, Rubens Onofre Nodari   +2 more
doaj   +1 more source

Low Genetic Diversity of the Endangered Franciscana (Pontoporia blainvillei) in Its Northernmost, Isolated Population (FMAIa, Espírito Santo, Brazil)

Frontiers in Marine Science, 2020
The franciscana, Pontoporia blainvillei, is the most endangered small cetacean in the Southwestern Atlantic Ocean, occurring from Itaúnas, Espírito Santo, Brazil to Chubut province, Argentina.
Vanessa K. M. de Oliveira, Drienne M. Faria, Haydée A. Cunha, Teresa E. C. dos Santos, Adriana C. Colosio, Lupércio A. Barbosa, Mylla Carla C. Freire, Ana Paula C. Farro   +7 more
doaj   +1 more source

Divergência morfológica entre matrizes de Euterpe edulis Mart.

Floresta e Ambiente, 2023
Resumo Com objetivos de estimar parâmetros populacionais, determinar a divergência entre matrizes e subsidiar a otimização da coleta de germoplasma em uma população fragmentada de Euterpe edulis Mart, com vista à conservação genética da espécie ...
Samuel Pigozzo Silva, Jorge Mitiyo Maêda, Mauricio Ballesteiro Pereira, Antonio Petali Júnior   +3 more
doaj  

The Habitat Affects the Ecological Interactions between Azteca Forel (Hymenoptera: Formicidae) and Cecropia Loefl. (Urticaceae Juss.)

Sociobiology, 2018
In order to understand the effects of human impacts on structure and functioning of tropical forests, we should consider studies on animal-plant interactions such as antplant mutualistic interactions.We investigated the mutualistic interactions between ...
Marcos Augusto Ferraz Carneiro, André Luiz Gaglioti, Karine Santana Carvalho, Ivan Cardoso Nascimento, Juliana Zina   +4 more
doaj   +1 more source

The First Mitochondrial Genome of an Odonata Endemic to South America, Chalcopteryx rutilans (Rambur, 1842) (Odonata: Polythoridae), and Its Implications for the Phylogeny of the Zygoptera

Diversity, 2023
Chalcopteryx rutilans Rambur, 1842 (Polythoridae, Odonata) is a species widely distributed in central Amazonia. Due to its sensitivity to environmental changes, it is a bioindicator species used to evaluate the environmental conditions of streams in ...
Leandro Juen, Ricardo Koroiva, Fernando Geraldo de Carvalho, Cristian Camilo Mendoza-Penagos, Joás da Silva Brito, Lenize Batista Calvão, Victor Rennan Santos Ferreira, Ândrea Ribeiro-dos-Santos, Caio S. Silva, Sávio Guerreiro, Giovanna C. Cavalcante, Leandro Magalhães, Jorge E. S. de Souza, Daniel H. F. Gomes, Luciano Fogaça de Assis Montag, Thaisa S. Michelan, Raphael Ligeiro   +16 more
doaj   +1 more source

Transposable Elements as a Source of Novel Repetitive DNA in the Eukaryote Genome

Cells, 2022
The impact of transposable elements (TEs) on the evolution of the eukaryote genome has been observed in a number of biological processes, such as the recruitment of the host’s gene expression network or the rearrangement of genome structure. However, TEs
Michelle Louise Zattera, Daniel Pacheco Bruschi   +1 more
doaj   +1 more source