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| Registros recuperados: 1.445 | |
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| Bejarano,Eduar E.; Castro,Mirley; Pérez-Doria,Alveiro; Hernández-Oviedo,Ela; Vélez,Andrés; Vélez,Iván D.. |
| Se registra por primera vez para el Departamento de Guainía, Colombia, la presencia del género Lutzomyia França de reconocida importancia médica. Los flebotomíneos se recolectaron mientras intentaban picar al humano en los alrededores del casco urbano del municipio de Inírida. Se identificaron taxonómicamente tres especies de Lutzomyia, incluidas L. davisi (Root), L. olmeca bicolor Fairchild & Theodor, y L. antunesi (Coutinho). Adicionalmente, Brumptomyia mesai Sherlock es citada por primera vez en el litoral Caribe Colombiano a partir de ejemplares colectados con una trampa de luz CDC modificada en la Reserva Forestal Protectora Serranía de Coraza y Montes de María, Departamento de Sucre. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Phlebotominae; Flebotomíneo; Psychodopygus; Nyssomyia. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600027 |
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| Esteves Filho,Alberto B; Oliveira,José V de; Torres,Jorge B; Gondim Jr,Manoel G C. |
| The two spotted spider mite, Tetranychus urticae Koch, is a nontarget herbivore of Bt-cotton, but acquires and accumulates higher levels of Cry toxin than that expressed by transgenic plants. This work investigated the development and reproduction of T. urticae and of the predator Phytoseiulus macropilis Banks, during three successive generations looking for potential nontarget effect. In addition, behavioral studies on feeding preference, oviposition, and predation were carried out on Bt and non-Bt cottons. The development and reproduction of T. urticae and P. macropilis was conducted using leaf discs of Bt and non-Bt cottons. Arena containing leaf discs from both cotton types connected by a slide coverslip were also used in the behavioral studies.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Transgenic cotton; Cry1Ac; Tritrophic interaction; Nontarget arthropod. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300005 |
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| Beserra,Eduardo B.; Fernandes,Carlos R.M.; Queiroga,Maiene de F. C. de; Castro Jr.,Francisco P. de. |
| Relatos da resistência de Aedes aegypti (L.) ao temefós em vários estados brasileiros, justificou esta pesquisa que teve por objetivo verificar e caracterizar a resistência ao temefós de populações de A. aegypti da Paraíba. A resistência ao temefós foi avaliada e caracterizada a partir da dose diagnóstica de 0,012 mg/l, e de curvas de concentração-mortalidade. Os dados de mortalidade nas concentrações múltiplas foram submetidos à análise de Probit, sendo as razões de resistências calculadas a partir das CL50s das populações resistentes e da CL50 da população suscetível de laboratório. Todas as populações de A. aegypti mostraram-se resistentes ao temefós. A população do Sítio Piabas com RR = 4,0 apresentou baixa resistência, as populações de Campina Grande... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aedini; Vetor; Controle químico; Suscetibilidade. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000200019 |
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| Nickele,Mariane A; Oliveira,Edilson B de; Reis Filho,Wilson; Iede,Edson T; Ribeiro,Rodrigo D. |
| The spatial distribution of insects is essential to perform control strategies, to improve sample techniques and to estimate economic losses. We aimed to determine the spatial distribution of nests of Acromyrmex crassispinus (Forel) in Pinus taeda plantations. The experiments were carried out in P. taeda plantations with different ages (treatments: recently-planted, three and six-year old plants). The study took place in Rio Negrinho and in Três Barras, SC. Three plots of one hectare were delimited in each treatment, and plots were divided in 64 sample units. The analysis of the dispersion index [variance/mean relationship (I), index of Morisita (Iδ) and k exponent of negative binomial distribution] showed that the majority of the samplings presented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf-cutting ant; Pinus pest; Poisson distribution; Reforestation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600003 |
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| Carvalho,Alessandra R. de; DAlmeida,José M.; Mello,Rubens P. de. |
| Devido à importância de Chrysomya megacephala (Fabricius) como vetor de microrganismos patogênicos em grandes aglomerações humanas, este trabalho teve por objetivo conhecer a mortalidade da mosca durante as fases larval e pupal e o seu parasitismo por microhimenópteros. Larvas de C. megacephala de terceiro ínstar, juntamente com seu substrato de criação (carne bovina moída putrefata), foram colocadas por sete dias próximo a lixeiras, no campus do Instituto Oswaldo Cruz /FIOCRUZ e no Jardim Zoológico do Rio de Janeiro, Rio de Janeiro, RJ, de agosto de 1999 a julho de 2000. As pupas recolhidas após o período em campo foram individualizadas em cápsulas de gelatina e mantidas em câmara climática (27°C) por aproximadamente 35 dias. Foi verificado o número de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tachinaephagus zealandicus; Pachycrepoideus vindemiae; Nasonia vitripennis; Parasitoidismo. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000400017 |
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| Loyola,Rafael D.; Martins,Rogério P.. |
| Temporal variation of solitary wasps and bees, nesting frequency, mortality, and parasitism were recorded from a remanent forest in Belo Horizonte, MG, Brazil. Wasps and bees were collected in trap-nests placed in areas with 25, 100, and 400 m², from February to November 2004. The 137 trap-nests collected contained 11 species of wasps and bees. Wasps occupied most nests (75%). Occupation peaks occurred in March (25%) and September (26%); in June, the lowest occupation (2%) was observed. Except for Trypoxylon (Trypargilum) lactitarse Saussure, no significant correlation was found between number of occupied nests, and temperature and rainfall means. In the nests, 48% of the immature specimens died; 13% of the nests were parasitized. Total death and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nesting behavior; Mortality; Parasitism; Trypoxylon lactitarse; Auplopus militaris. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000100006 |
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| Altesor,Paula; Horas,Vanusa R; Arcia,María P; Rossini,Carmen; Zarbin,Paulo H G; González,Andrés. |
| Crocidosema aporema (Walsingham) is a major pest of legumes in the southern cone of Latin America. The mating behaviour of two allopatric populations (Uruguay and Brazil) of C. aporema kept in captivity was studied by observing the posture of calling females, the temporal pattern of pheromone emission and mating, and the response of males to calling females in olfactometer tests. Female calling and mating was observed during the scotophase, from the first to the seventh night after adult emergence. Male response was evaluated at night using a single calling female in a Y-shaped olfactometer. Females adopted a characteristic calling posture, extruding the pheromone gland from the tip of the abdomen. Most females started calling during the second scotophase,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical communication; Sex pheromone; Calling periodicity; Y-olfactometer test. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300003 |
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| Onofrio,Valeria C; Arzua,Márcia; Labruna,Marcelo B; Faccini,João L H; Barros-Battesti,Darci M. |
| Amblyomma scalpturatum Neumann has been reported in Brazil in the northern (States of Amazonas, Pará and Rondônia) and mid-western regions (States of Mato Grosso and Mato Grosso do Sul). It has been found in association with large and medium sized mammals, as Artiodactyla, Perissodactyla, Xenarthra and Carnivora. In this paper, this tick species is reported for the first time in the Brazilian states of Paraná and Roraima, southern and northern regions, respectively. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geographical distribution; Tick. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300023 |
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| Gomes,Juliana P; Iannuzzi,Luciana; Leal,Inara R. |
| The objective of this study was to determine the effects of forest fragmentation on ant richness in a landscape of Atlantic Forest in Northeast Brazil. More specifically, the ant richness was related to the attributes of fragments (area and distance from the fragment central point to the edge), landscape (forest cover surrounding the fragments), and tree community (plant density, richness, and percentage of shade tolerant species). The surveys were carried out in 19 fragments located in Alagoas State from October 2007 to March 2008. Samples were collected through a 300 m transect established in the center of each fragment, where 30 1-m² leaf litter samples were collected at 10 m intervals. A total of 146 ant species was collected, which belonged to 42... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ant species richness; Ant functional group; Forest fragmentation; Leaf-litter ant; Tree community. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600008 |
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| Noronha,Aloyséia C.S.; Mota,Adilson; Moraes,Gilberto J.; Coutinho,Luiz L.. |
| A identificação dos ácaros geralmente é feita com base nas características morfológicas. Entretanto, as evidências morfológicas nem sempre são suficientes para a distinção de espécies muito próximas, levando o taxonomista a considerar aspectos ecológicos, biológicos e, mais recentemente, as características moleculares. A caracterização molecular de populações de Euseius citrifolius Denmark & Muma e E. concordis (Chant) foi realizada com o seqüenciamento da região dos espaçadores internos transcritos ITS1 e ITS2 utilizando-se os primers P1 (5'-AGAGGAAGTAAAAGTCGTAACAAG-3)' e P2 (5'-ATATGCTTAAATTCAGGGGG-3'), localizados nas regiões 18S e 28S do DNA ribossomal, respectivamente. Foram caracterizadas as seguintes populações: E. citrifolius: Arroio do... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Controle biológico; DNA; Fitoseídeo; Predador. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000400009 |
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| Registros recuperados: 1.445 | |
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