Consulta: creatorFacets:"Bueno,Odair C."
Registros recuperados: 7
Data/hora: 10/06/2024 02:31:03

Suscetibilidade de operárias e larvas de abelhas sociais em relação à ricinina
Provedor de dados: 76
Autores: Rother,Débora C.; Souza,Tiago F.; Malaspina,Osmar; Bueno,Odair C.; Silva,Maria de Fátima das G. F. da; Vieira,Paulo C.; Fernandes,João B.
Muitas substâncias de origem vegetal podem ser tóxicas ou apresentar potencial inseticida. Com o objetivo de diminuir a problemática da poluição ambiental alguns estudos vêm tentando substituir os inseticidas artificiais pelos inseticidas botânicos. Ricinus communis (Euphorbiaceae) apresenta uma grande variedade de substâncias sendo a ricinina o principal componente tóxico. Considerando que as abelhas são insetos benéficos por atuarem como agentes polinizadores das plantas, este estudo teve por objetivo avaliar o efeito tóxico da ricinina para as operárias e larvas de Apis mellifera (Linnaeus, 1758) (Hymenoptera, Apidae) e Scaptotrigona postica (Latreille, 1907) (Hymenoptera, Meliponini). Para isso, foram realizados testes de ingestão em operárias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communi; Apis mellifera; Scaptotrigona postica; Teste de aplicação tópica; Teste de ingestão.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000100009

Isolation and maintenance of symbiotic fungi of ants in the tribe Attini (Hymenoptera: Formicidae)
Provedor de dados: 82
Autores: Silva-Pinhati,Ana C.O.; Bacci Jr.,Maurício; Siqueira,Célia G.; Silva,Aline; Pagnocca,Fernando C.; Bueno,Odair C.; Hebling,Maria J.A.
The isolation and maintenance of symbiotic basidiomycete fungi living in association with ants of the tribe Attini has been hindered by the slow growth rate of these fungi and the presence of other microorganisms on the surface of the material which the ants maintain inside their nests to provide a growth substrate for their symbiont. In this paper we describe a method which increases the efficiency of isolation of these fungal symbionts by over seven fold as compared to traditional isolation procedures. Underground nests of attine ants of the genera Atta, Acromyrmex, Trachymyrmex and Mycetarotes were located, from which samples containing the fungal symbiont and ants were collected and transported to the laboratory where the ants were able to clean the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atta; Acromyrmex; Trachymyrmex; Mycetarotes; Basidiomycete; Symbiosis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000100001

New Nicoletiidae (Zygentoma: Insecta) from Brazil living in fire-ant (Hymenoptera: Insecta) nests
Provedor de dados: 84
Autores: Mendes,Luis F.; Fox,Eduardo G. P.; Solis,Daniel R.; Bueno,Odair C.
A new myrmecophilous silverfish (Zygentoma: Nicoletiidae: Subnicoletiinae) from Rio de Janeiro, Brazil, found living in fire ant (Solenopsis saevissima, Formicidae: Myrmicinae) nests is described: Allotrichotriura saevissima gen. nov. sp. nov. is compared with the other genera and subgenera known in the subfamily. The main diagnostic features would include the combination of body shape, body and head setation, morphology of praetarsus, and number of abdominal stylets and vesicles. Although further quests were attempted at the type-locality, only the original described material, exclusively composed of females, remains known.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: New genus; New species; Subnicoletiinae; Myrmecophilous; Brazil.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492009003400001

Activity of sesame leaf extracts against the symbiotic fungus of Atta sexdens L.
Provedor de dados: 44
Autores: Ribeiro,Stelamaris B.; Pagnocca,Fernando C.; Victor,Sandra R.; Bueno,Odair C.; Hebling,Maria J.; Bacci Jr,Mauricio; Silva,Osvaldo A.; Fernandes,João B.; Vieira,Paulo C.; Silva,Maria F. G. F.
The symbiotic fungus Leucoagaricus gongylophorus (Möller) Singer (syn. Rozites gongylophora Möller) cultivated by the leaf-cutting ant Atta sexdens L. had its development strongly inhibited by crude extracts obtained from leaves of sesame, Sesamum indicum L. (Pedaliaceae). With most of the fractions from these extracts total inhibition was observed at 2.5 mg/ml, whereas inhibition of 50% was observed with some fractions at 1.25 mg/ml. Chromatographic analysis of the hexane extract showed that it was composed by a mixture of fatty acids, of which tetradecanoic, hexadecanoic, octadecanoic, icosanoic, docosanoic and 9,12,15 octadecatrienoic acids were the major components. The separation of these compounds during the different steps of purification resulted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Hymenoptera; Sesame; Mutualistic fungus; Leaf-cutting ants.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000300010

Sobrevivência de operárias de Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae) isoladas do formigueiro e alimentadas com dietas artificiais
Provedor de dados: 44
Autores: Bueno,Odair C.; Morini,Maria S.C.; Pagnocca,Fernando C.; Hebling,Maria J.A.; Silva,Osvaldo A.
Avaliou-se dietas artificiais, para operárias médias de Atta sexdens rubropilosa Forel isoladas de formigueiros de laboratório e de campo. Os bioensaios foram realizados com 6 formigas/placa de Petri, sendo 10 placas/tratamento, em câmara ambiental a 24 ± 1 °C e UR &gt; 70%. Não houve diferença na sobrevivência entre as operárias de laboratório e de campo, quando tratadas com dieta artificial líquida. Ao se comparar as dietas artificiais líquida e sólida, pode-se constatar que não houve diferença na sobreviência das operárias de laboratório tratadas com as diferentes dietas. A dieta artificial sólida com troca a cada 48 h, até 25 dias, representa uma alternativa para se trabalhar com operárias médias de A. sexdens rubropilosa, isoladas do formigueiro, em...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Attini; Dieta artificial; Formiga; Bioensaio.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000100015

Number of ovarioles in workers descendent from crossings between Africanized and Italian honeybees, Apis mellifera L.: comparison among backcrosses and ancestors colonies
Provedor de dados: 44
Autores: Thuller,Regina H.C.; Malaspina,Osmar; Bueno,Odair C.; Chaud-Netto,José.
A comparative study of ovarioles number in workers of bees, Apis mellifera L. of 36 backcrosses colonies (Africanized and Italian), and stock, inbred and F1 colonies was carried out. No difference on the number of ovarioles in right and left ovaries of workers from the colonies used was detected. The hybrid bees from F1 generation presented from 2 to 31 ovarioles. The number of ovarioles observed in backcrossed Africanized workers varied from 2 to 56 and from 2 to 117 in the Italian ones. The range observed in these bees may be partially explained by the variability registered in stock colonies (Africanized workers: 2 - 16; Italian workers: 6 - 26) and in F1 colonies (2 - 31).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Hymenoptera; Apidae; Ovary; Hybrid bees.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000200010

Leaf-cutting ant faecal fluid and mandibular gland secretion: effects on microfungi spore germination
Provedor de dados: 58
Autores: Rodrigues,André; Carletti,Carla D.; Bueno,Odair C.; Pagnocca,Fernando C.
The mandibular gland secretion (MGS) and the faecal fluid (FF) of the leaf-cutting ant Atta sexdens rubropilosa Forel affected the spore germination of selected microfungi isolated from nests of this insect. MGS was more effective than the FF, completely inhibiting the spore germination of four out of six microfungi species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungus garden; Microorganisms; Atta.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100016