Results 91 to 100 of about 408,859 (199)

Integrative taxonomy reveals four new species of the armoured catfish genus Pareiorhina (Siluriformes: Loricariidae) from the upper Paraná River basin, Brazil

open access: yesJournal of Fish Biology, EarlyView.
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

Alteração e conservação do leite. [PDF]

open access: yes, 2011
Propriedades importantes; contaminacao; alteracao; conservacao; conclusao e recomendacao.bitstream/CNPAT-2010/4642/1/Dc-024 ...
MACHADO, T. F.
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A new endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil

open access: yesJournal of Fish Biology, EarlyView.
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

Análise agroecológica de dois paradigmas modernos. [PDF]

open access: yes, 2009
O presente estudo é uma revisão sobre a contribuição da agroecologia para o debate conservacionista e desenvolvimentista. O discurso tradicional da biologia da conservação traz um enfoque exclusivo nas unidades de conservação (UCs), prejudicando os ...
Goulart, Fernando   +3 more
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Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa   +8 more
wiley   +1 more source

Longevidade de sementes de cultivares de "Catuaí" (Coffea arabica) em banco de germoplasma. [PDF]

open access: yes, 2011
A conservação de sementes de café por longos períodos é dificultada pelo comportamento intermediário no armazenamento. No entanto, estudos recentes relatam que a partir da combinação de um grau crítico de umidade das sementes para cada temperatura de ...
BARTHOLO, G. F.   +2 more
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Unravelling the skin of the nurse shark: A morphological description of the placoid scales of Ginglymostoma cirratum

open access: yesJournal of Fish Biology, EarlyView.
Abstract Ginglymostoma cirratum, commonly known as the nurse shark, is a nocturnally active benthic shark, often found in western and eastern Atlantic waters. Although this shark has been well explored in many biological aspects, few studies have thoroughly examined the morphology of its dermal denticles (or placoid scales).
Danilo P. Lima   +7 more
wiley   +1 more source

Estratégias de conservação de trilhas do Parque Nacional da Chapada dos Guimarães, Mato Grosso, Brasil. [PDF]

open access: yes, 2009
Ocorreu um diagnóstico do estado de conservação de duas trilhas do Parque Nacional da Chapada dos Guimarães (PNCG) por meio de uma adaptação do método Visitor Impact Management (VIM). Pretendeu-se contribuir com o monitoramento sistematizado dos impactos
Silva, Ananias Marques da   +1 more
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A new catfish species of Microcambeva Costa & Bockmann, 1994 (Siluriformes: Trichomycteridae) from southern Brazil, with a redescription of M. ribeirae Costa, Lima & Bizerril, 2004

open access: yesJournal of Fish Biology, EarlyView.
Abstract Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this ...
Lucas S. de Medeiros   +6 more
wiley   +1 more source

Introdução de novos acessos no banco in vitro do gênero Ananas [PDF]

open access: yes, 2011
A conservação in vitro é uma estratégia que deve ser considerada para a criação de cópias de segurança de importantes coleções de germoplasma. Além de apresentar vantagens sobre a conservação em campo, permite a disponibilização de acessos para uso e ...
CARVALHO, H. L.   +3 more
core  

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