Results 41 to 50 of about 460 (64)
Revista do Instituto Florestal, 1998 Estudou-se a estrutura genética de duas subpopulações naturais de Genipa americana L., situadas na mata ciliar do Rio Moji-Guaçu, SP, denominada "Mata da Figueira", de propriedade do Instituto Florestal do Estado de São Paulo, a partir da eletroforese ...
Alexandre Magno Sebbenn +2 more
doaj +1 more source
Divergência genética entre cultivares locais e cultivares melhoradas de feijão [PDF]
Pesquisa Agropecuária Brasileira, 2002 A grande variabilidade genética presente no germoplasma de feijão (Phaseolus vulgaris L.) em uso na agricultura familiar no Brasil tem sido plenamente reconhecida.
Lessandra Silva Rodrigues +3 more
doaj +1 more source
Journal of Fish Biology, Volume 109, Issue 1, Page 102-110, July 2026.Abstract A new species of Pyrrhulina is described based on morphological and molecular evidence. Pyrrhulina punctata is distinguished from all congeners by the presence of a series of 7 to 16 irregular blotches of dark pigmentation on the flanks, equally marked in juveniles and adult specimens, the presence of 26–28 lateral‐line scales, 17–21 maxillary
Andre Netto‐Ferreira +4 more
wiley +1 more source
Revista do Instituto Florestal, 2003 A experimentação com espécies arbóreas nativas vem, nos últimos anos, buscando alternativas de consórcio em sistemas agroflorestais. A aroeira, espécie arbórea de grande valor econômico, tem sofrido redução na sua base genética.
Adriana Junqueira Fonseca +3 more
doaj +1 more source
Journal of Fish Biology, Volume 109, Issue 1, Page 362-370, July 2026.Abstract Catfishes of the subfamily Trichomycterinae comprise the most diverse fish group with species adapted to live in Neotropical caves, but past evolutionary scenarios that have driven the origin of these troglobitic species remain unknown. We herein investigate the phylogenetic position of the cave‐restricted Trichomycterus rubbioli, endemic to ...
Wilson J. E. M. Costa +6 more
wiley +1 more source
Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2006 Virola surinamensis (Rol. ex Rottb.) Warb., conhecida popularmente como ‘ucuúba’, é uma árvore de 40 m de altura, comumente encontrada em lugares alagados, geralmente perto de igapós.
Ely Simone Cajueiro Gurgel +3 more
doaj +1 more source
Freshwater Biology, Volume 71, Issue 6, June 2026.ABSTRACT The Neotropical migratory fish Prochilodus nigricans plays a critical ecological and socioeconomic role in the Amazon basin. Nevertheless, little is known about its populations and the genetic diversity pattern of the species. In light of this, the current study investigates the spatial genetic structure and diversity of P.
Ueslei Lopes +5 more
wiley +1 more source
Journal of Fish Biology, Volume 108, Issue 6, Page 1906-1933, June 2026.Abstract Four new species of the small‐sized armoured catfish genus Pareiorhina are described from mountain ranges in the Grande River drainage, upper Paraná River basin, based on morphological and molecular species delimitation methods. Molecular analyses based on the cytochrome oxidase subunit I (COI) marker recovered Pareiorhina as polyphyletic ...
Pedro L. C. Uzeda +6 more
wiley +1 more source
Bioscience Journal, 2008 Alterações ambientais provocadas pelas mudanças climáticas e principalmente por ações humanas têm reduzido populações naturais de peixes nos últimos anos.
Nelson Maurício Lopera Barrero +7 more
doaj
Journal of Fish Biology, Volume 108, Issue 6, Page 1687-1700, June 2026.Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
Cidimar E. de Assis +7 more
wiley +1 more source