Results 21 to 30 of about 460 (64)

CONSERVAÇÃO DE RECURSOS GENÉTICOS FLORESTAIS

Revista do Instituto Florestal, 1992
Os principais aspectos da conservação dos recursos genéticos florestais são abordados. Para conservação in situ, é esboçado um modelo das ações principais necessárias para dimensionar as áreas de conservação, o tamanho mínimo aceitável das populações e ...
Eduardo Lleras
doaj   +1 more source

GENÉTICA DA CONSERVAÇÃO DE Cabralea canjerana (Vell.) Mart. (Meliaceae) EM FRAGMENTOS FLORESTAIS DE MATA ATLÂNTICA NA APA FERNÃO DIAS

Revista Árvore, 2015
A Mata Atlântica é o bioma brasileiro mais severamente afetado pela fragmentação ambiental. A análise da estruturação da diversidade genética, assim como de características demográficas e quantitativas, permite inferir parâmetros populacionais ...
Arthur Tavares de Oliveira Melo, Alexandre Siqueira Guedes Coelho, Marlei Ferreira Pereira, Angel José Vieira Blanco, Edivani Villaron Franceschinelli   +4 more
doaj   +1 more source

Urbanization and food transition in the Brazilian Amazon: From wild to domesticated meat

People and Nature, EarlyView.
Abstract Urbanization is expected to influence food transitions, resulting in a shift from wild foods to more domesticated foods. Concomitantly, food insecurity and urban demand for natural resources, including wildlife, are expected to increase overall, even when the per capita consumption is expected to decrease.
Willandia A. Chaves, Denis Valle, Aline S. Tavares, Thais Q. Morcatty, Marcelo D. Vidal, Tatiana Schor, Eduardo M. von Mühlen, David S. Wilcove   +7 more
wiley   +1 more source

Marcador de DNA mitocondrial para estudos genético-populacionais de Tartaruga-da-amazônia (Podocnemis expansa Schweigger, 1812)

Biodiversidade Brasileira, 2022
Os quelônios são animais de vida longa e poucos dos seus indivíduos chegam à fase adulta. Além da baixa taxa natural de recrutamento, diversas ações antrópicas vêm dificultando a manutenção das populações desse grupo.
Maria Augusta Paes Agostini , Bárbara Beatriz de Sousa Rocha, Rafael Antônio Machado Balestra, Samuel Rezende Paiva   +3 more
doaj   +1 more source

Morphology of Guard Hairs in Amazonian Marsupials: Intergeneric Variation, Habitat and Habit Association in a Phylogenetic Framework of the Order Didelphimorphia

Acta Zoologica, EarlyView.
ABSTRACT The cuticle and medulla of guard hairs exhibit distinct morphological patterns among mammalian species. To investigate this variability in marsupials from the Brazilian Amazon, we analysed guard hairs from nine Didelphimorphia species and incorporated data from an additional 25 didelphid species.
Matheus M. Bitencourt, Ana Cristina Mendes‐Oliveira, Gleomar F. Maschio, Maria Clara S. Ribeiro, Alexandra M. R. Bezerra   +4 more
wiley   +1 more source

Taxonomic and functional diversity of urban bees of the world

Conservation Biology, EarlyView.
Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso, Pietro K. Maruyama, Ingrid N. Gomes, Lorena B. Valadão‐Mendes, Victor H. D. Silva, Larissa Lorraine, Jordana O. Borges, Rogério V. Gonçalves, Léo C. Rocha‐Filho, Renata Trevizan, Yasmine Antonini   +10 more
wiley   +1 more source

DNA barcoding uncovers two putative new species in Trachelyopterus (Siluriformes: Auchenipteridae)

Journal of Fish Biology, EarlyView.
Abstract Trachelyopterus is a cryptic genus within the Neotropical catfish family Auchenipteridae with a complex history of taxonomic revisions. Despite the notable morphological and genetic similarities among its species, some studies suggest that the genus harbours greater diversity than is currently recognized, including additional species yet to be
Fiorindo José Cerqueira, Maelin da Silva, Chrystian Aparecido Grillo Haerter, Sandra Mariotto, Liano Centofante, Eliana Feldberg, Orlando Moreira Filho, Vladimir Pavan Margarido, Daniel Rodrigues Blanco, Roberto Laridondo Lui   +9 more
wiley   +1 more source

A new sexually dimorphic species of the armoured catfish genus Neoplecostomus (Siluriformes: Loricariidae) from Neotropical Atlantic coastal drainages

Journal of Fish Biology, EarlyView.
Abstract A new species of the small‐sized armoured catfish genus Neoplecostomus is described from Neotropical Atlantic coastal drainages, in southeast Brazil. The new species can be readily diagnosed from all congeners by having the first plates of the ventral series reduced in size, rounded and ventrally displaced, resulting in a naked band between ...
Pedro L. C. Uzeda, Tiago C. Pessali, Axel M. Katz, Felipe P. Ottoni, Francisco Langeani, Priscilla C. Silva   +5 more
wiley   +1 more source

Proposta para conservação genética da Araucaria angustifolia

Pesquisa Florestal Brasileira, 2010
O objetivo deste trabalho é apresentar conceitos genéticos desenvolvidos para conservação e restauração de populações de plantas. Adicionalmente, propõem-se linhas gerais para a conservação da Araucaria angustifolia no Estado do Paraná.
Juliana Vitoria Messias Bittencourt
doaj  

Cryptic diversity and recent diversification in the Pyrrhulina australis species complex (Characiformes, Lebiasinidae) revealed by mitochondrial DNA

Journal of Fish Biology, EarlyView.
Abstract Pyrrhulina australis Eigenmann & Kennedy, 1903, is widely distributed across the main hydrographic basins of South America. The taxonomic integrity of this species is nevertheless challenged by the lack of clear diagnostic characters, its marked geographic variation and the morphological overlap with its congeners. In this context, the present
Taina Barbosa De Souza, Daniela Cristina Ferreira, Hugmar Pains Da Silva, Carolina B. Machado, Claudio Oliveira, André L. Netto‐Ferreira, Paulo C. Venere   +6 more
wiley   +1 more source