25,026 research outputs found
Parasitóides de Anastrepha obliqua (Macquart) (Dip., Tephritidae) em pitangueira no Município de Belém, Pará.
Resumo simples
Índice de infestação de frutos de pitangueira por Anastrepha obliqua (Macquart) (Diptera: Tephritidae) no Município de Belém, Pará.
Resumo simples
Espécies de Anastrepha Schiner (Diptera: Tephritidae), seus hospedeiros e parasitóides nos Estados do Acre e Rondônia, Brasil.
Durante o mês de março de 2009 foram realizadas amostragens de frutos carnosos nos Estados do Acre (municípios de Brasiléia, Bujari, Capixaba, Epitaciolândia, Rio Branco, Sena Madureira, Senador Guiomard e Xapuri) e Rondônia (Ariquemes, Candeias do Jamari, Itapuã do Oeste, Ouro Preto do Oeste e Porto Velho) visando ampliar o conhecimento sobre a diversidade de moscas-das-frutas (Diptera: Tephritidae), seus hospedeiros e parasitóides. Este trabalho constitui o primeiro registro de Anastrepha coronilli Carrejo & González (Tephritidae) para o Estado do Acre, e das espécies A. coronilli, A. distincta Greene (Tephritidae), e dos himenópteros Doryctobracon areolatus (Szépligeti) e Opius bellus Gahan (Braconidae) para Rondônia. Palavras-chave: Amazônia, Braconidae, Hymenoptera, moscas-das-frutas, Tephritoidea
Generalising the logistic map through the -product
We investigate a generalisation of the logistic map as (, )
where stands for a generalisation of the ordinary product, known as
-product [Borges, E.P. Physica A {\bf 340}, 95 (2004)]. The usual product,
and consequently the usual logistic map, is recovered in the limit ,
The tent map is also a particular case for . The
generalisation of this (and others) algebraic operator has been widely used
within nonextensive statistical mechanics context (see C. Tsallis, {\em
Introduction to Nonextensive Statistical Mechanics}, Springer, NY, 2009). We
focus the analysis for at the edge of chaos, particularly at the
first critical point , that depends on the value of . Bifurcation
diagrams, sensitivity to initial conditions, fractal dimension and rate of
entropy growth are evaluated at , and connections with
nonextensive statistical mechanics are explored.Comment: 12 pages, 23 figures, Dynamics Days South America. To be published in
Journal of Physics: Conference Series (JPCS - IOP
Microbial biomass and activity in two cultivation systems on the SHIFT experimental area near Manaus.
In two different cultivation systems we investigated the microbial biomass and activity in the rhizosphere of Theobroma grandiflorum and Bactris gasipaes, two important crop plants in sustainable agriculture in Brazil during rainy and dry season 1998
First record of Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae) in citrus in Brazil.
Anastrepha serpentina (Wiedemann) is recorded for the first time in citrus (Rutaceae) in Brazil. Specimens were obtained from sweet orange (Citrus sinensis) sampled in the municipalities of Belém and Capitão Poço, and from mandarin orange (Citrus reticulata) from Tomé-Açu, state of Pará, Brazil
First record of Anastrepha serpentina (Wiedemann) (Diptera: Tephritidae) in citrus in Brazil.
Anastrepha serpentina (Wiedemann) is recorded for the first time in citrus (Rutaceae) in Brazil. Specimens were obtained from sweet orange (Citrus sinensis) sampled in the municipalities of Belém and Capitão Poço, and from mandarin orange (Citrus reticulata) from Tomé-Açu, state of Pará, Brazil
Primeiro registro de Anastrepha Fraterculus (Diptera: Tephritidae) no Estado do Pará.
Resumo 1496-2
Primeiro registro de Anastrepha Fraterculus (Diptera: Tephritidae) no estado do Pará.
Resumo 1496-2
Principais espécies de mosca-das-frutas e seus inimigos naturais em frutos comercializados em feiras livres do município de Belém, Pará.
Resumo 1609-1
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