Results 21 to 30 of about 489 (138)

Evaluation of the Toxicity of Virola sebifera Crude Extracts, Fractions and Isolated Compounds on the Nest of Leaf-Cutting Ants

Psyche: A Journal of Entomology, 2012
The phytochemical study of Virola sebifera leaves led to the isolation of three lignans: (+)-sesamin, (−)-hinokinin, and (−)-kusunokinin and three flavonoids: quercetin-3-O-α-L-rhamnoside, quercetin-3-O-β-D-glucoside, and quercetin-3-methoxy-7-O-β-D ...
Keylla Utherdyany Bicalho, Ana Paula Terezan, Denise Cristina Martins, Taís Garcia Freitas, João Batista Fernandes, Maria Fátima das Graças Fernandes da Silva, Paulo Cezar Vieira, Fernando Carlos Pagnocca, Odair Côrrea Bueno   +8 more
doaj   +2 more sources

Análise de agrupamento e regressão não-linear aplicados ao crescimento in vitro de Leucoagaricus gongylophorus (Singer) Möller em meios de cultura acrescido com diferentes extratos vegetais

Biotemas, 2011
O estudo teve como objetivo avaliar o crescimento in vitro de Leucoagaricus gongylophorus em meio de cultura acrescidos com diferentes extratos de espécies vegetais, por meio da análise estatística multivariada de agrupamento de dados, além de ...
Marcelo Dias de Souza, Otávio Peres Filho, Sidney Fernando Caldeira, Allan Libanio Pelissari, Alberto Dorval   +4 more
doaj   +4 more sources

Bacteria Contribute to Plant Secondary Compound Degradation in a Generalist Herbivore System [PDF]

mBio, 2020
Herbivores must overcome a variety of plant defenses, including coping with plant secondary compounds (PSCs). To help detoxify these defensive chemicals, several insect herbivores are known to harbor gut microbiota with the metabolic capacity to degrade ...
Charlotte B. Francoeur, Lily Khadempour, Rolando D. Moreira-Soto, Kirsten Gotting, Adam J. Book, Adrián A. Pinto-Tomás, Ken Keefover-Ring, Cameron R. Currie   +7 more
doaj   +2 more sources

Low Virulence of the Fungi Escovopsis and Escovopsioides to a Leaf-Cutting Ant-Fungus Symbiosis [PDF]

Frontiers in Microbiology, 2021
Eusocial insects interact with a diversity of parasites that can threaten their survival and reproduction. The amount of harm these parasites cause to their hosts (i.e., their virulence) can be influenced by numerous factors, such as the ecological ...
Débora Mello Furtado de Mendonça, Marcela Cristina Silva Caixeta, Gabriel Leite Martins, Camila Costa Moreira, Camila Costa Moreira, Thiago Gechel Kloss, Simon Luke Elliot   +6 more
doaj   +2 more sources

Ants manage polyol production to fight fungal antagonists [PDF]

Microbiology Spectrum
The attinas, ants of the Attina subtribe (Formicidae: Myrmicinae), colonize vast areas in the American continent. This impressive fitness depends on culturing mutualistic fungi in their “fungus gardens” to digest biomass.
Diego Santana Assis, Sérgio Kakazu, Mateus Oliveira da Cruz, Raphael Affonso Pereira da Silva, Vitor Rodrigues Marin, Milene Ferro, Daiane Cristina Sass, Andre Rodrigues, Maurício Bacci   +8 more
doaj   +2 more sources

Selectively Targeting of Gardeners and Symbiotic Fungus in Leaf-Cutting Ant Colonies Using Essential Oils [PDF]

Insects
Social insect pests such as leaf-cutting ants challenge conventional pest management because effective control must disrupt colony-level organization rather than target individual insects. Colony persistence depends on the mutualistic association between
Andressa Graebin, Patrícia F. Pinheiro, Karina D. Amaral, Vinicius F. Santos, Tarciza F. Nascimento, Marcela V. de S. Vilela, Yenara K. M. Silva, Thais D. Marcelino, Raul Narciso C. Guedes   +8 more
doaj   +2 more sources

<i>Leucoagaricus gongylophorus</i> provides protection for </i>Atta sexdens</i> against plant extracts

Ciência Florestal, 2022
Plant extracts have been considered for the control the leaf-cutting ants. The objectives of this study were to evaluate the survival leaf-cutting worker ants after topical application of Ageratum conyzoides (mentrasto) and Manihot esculenta (cassava) extracts; and to evaluate the effect of Manihot esculenta hexane extract via ingestion on the survival
Amanda Cristiane Queiroz Motta, Deise Santos Avelino, Cidália Gabriela Santos Marinho, Marcos Antônio Matiello Fadini, Júlio Onésio Ferreira Melo   +4 more
openaire   +3 more sources

Selection of leaves of Palicourea padifolia, Platanus mexicana and Eriobotrya japonica by Atta mexicana (Hymenoptera: Formicidae) and its influence on the growth of the mutualistic fungus Leucoagaricus gongylophorus

Botan‪ical Sciences
Background: The foraging preference of Atta mexicana for leaves of three plant species was analyzed under laboratory conditions. Physicochemical characterizations, bioassays with leaf material and crude extracts, and tests on the effect on the ...
Dennis Adrián Infante-Rodríguez, Alberto Carlos Velázquez-Narváez, Mario J. Aguilar-Méndez, Luis Javier Fuentes-Jacques, Juan L. Monribot-Villanueva, José A. Guerrero-Analco, Jorge Valenzuela-González   +6 more
doaj   +2 more sources

Low variation in ribosomal DNA and internal transcribed spacers of the symbiotic fungi of leaf-cutting ants (Attini: Formicidae)

Brazilian Journal of Medical and Biological Research, 2004
Leaf-cutting ants of the genera Atta and Acromyrmex (tribe Attini) are symbiotic with basidiomycete fungi of the genus Leucoagaricus (tribe Leucocoprineae), which they cultivate on vegetable matter inside their nests.
Silva-Pinhati A.C.O., Bacci Jr. M., Hinkle G., Sogin M.L., Pagnocca F.C., Martins V.G., Bueno O.C., Hebling M.J.A.   +7 more
doaj   +4 more sources

Clustering and nonlinear regression analysis applied to the in vitro growing of Leucoagaricus gongylophorus (Singer) Möller in a culture environment enriched with different botanical extracts [PDF]

Biotemas, 2011
The study aimed to evaluate the in vitro growing of Leucoagaricus gongylophorus in a culture environment enriched with different extracts from botanical species, via multivariate statistical analysis of data clustering, besides identifying the fungus ...
Marcelo Dias de Souza, Otávio Peres Filho, Sidney Fernando Caldeira, Allan Libanio Pelissari, Alberto Dorval   +4 more
doaj   +1 more source