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Registros recuperados: 6
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Associations between Cinara atlantica, its natural enemies and ants PFB - Pesquisa Florestal Brasileira
Penteado, Susete do Rocio Chiarello; Lazzari, Sonia Maria Noemberg; Reis Filho, Wilson; Nickele, Mariane Aparecida.
The study of the relationship between species or populations is an excellent tool to learn about ecological phenomena. Among the possible interaction between two species, it is highlighted the mutualism between ants and insects that produce honeydew. While honeydew is "garbage" for the aphids it can be a food source for ants. The type of interaction between aphids and their natural enemies, known as "intraguild predation" or predation of natural enemies that share the same prey is an interaction that occurs in aphid communities. The majority of natural enemies in this system interact asymmetrically according to differences in body size, feeding strategy and priorities of each species. In agroecosystems, the consequence of this relation becomes particularly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Symbionts Predators Parasitoids Large pine aphid Pinus taeda Simbiontes; Predadores Parasitóides Pulgão-gigante-do-pínus Pinus taeda..
Ano: 2012 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/307
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Escolitídeos como bioindicadores do “declínio do nim” no Brasil PFB - Pesquisa Florestal Brasileira
Penteado, Susete do Rocio Chiarello; Carpanezzi, Aparecido Antonio; Neves, Edinelson José Maciel; Santos, Álvaro Figueredo dos; Flechtmann, Carlos Alberto Hector.
Este é o primeiro registro do ataque de besouros (Curculionidae, Scolitinae), no Brasil, causando danos em plantios de nim, entre 7 e 10 anos, em Brejinho de Nazaré, Tocantins, constado em junho de 2009. Os insetos foram identificados como, Xylosandrus compactus (Eichhoff), Cryptocarenus diadematus Eggers, 1937 e Hypothenemus sp. Westwood, 1836. Os plantios atacados apresentavam crescimento abaixo do esperado para a região, baixa produção de sementes, desfolhamento acentuado e rebrota intensa nos ramos, seguida por morte de brotos jovens e/ou do ápice do ramo. A ação dos insetos provocou pontos de exsudação intensa de goma nos orifícios provocados. O fato tem similaridade com a síndrome denominada “declínio do nim”, relatada na África.doi:...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Damage; Stress; Scolytinae; Ambrosia beetles; Azadirachta Danos; Estresse; Scolytinae; Besouros da ambrosia; Azadirachta..
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/179
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Fungus-farming ants: state of art and future research directions PFB - Pesquisa Florestal Brasileira
Nickele, Mariane Aparecida; Pie, Marcio Roberto; Reis Filho, Wilson; Penteado, Susete do Rocio Chiarello.
The tribe Attini (Hymenoptera: Formicidae) comprises 14 genera with approximately 230 described ant species, which are engaged in an obligate mutualism with fungi. The fungus is cultivated inside their  colonies, using a variety of organic material as substrate. The fungus is used as food by the ants, and in return, the ants nourish, protect, and disperse their fungal cultivars. Although all species of this tribe cultivate fungi, attine ants are quite heterogeneous in relation to agricultural system, colony size and social structure, substrate preparation behavior, foraging behavior, etc. Agriculture, symbiosis and natural history traits of fungus-farming ants are discussed in this review, as well as future research directions.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agriculture; Attini; Leaf-cutting ants; Pest; Symbiosis Entomologia Agricultura; Attini; Formigas cortadeiras; Simbiose; Praga.
Ano: 2013 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/403
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Isolamento de DNA genômico de indivíduo de nematoide parasita de insetos: estudo de caso de Deladenus PFB - Pesquisa Florestal Brasileira
Schuhli, Guilherme Schnell e; Penteado, Susete do Rocio Chiarello; Kestring, Daiane Rigoni; Steil, Gisleine Jarenko; Thomas, Micheli Cristina.
Populational studies involve single individual DNA extraction in order to grant further genotyping data. In the case of some parasitic nematodes, the reduced dimensions and high individual number per infestation makes individual genotyping a difficult task. Aiming the development of a protocol we performed adjustments in available methods in order to acquire the best gain in purity and concentration of genomic DNA. Single specimens were digested in Worm Lysis Buffer and submitted to PCR amplification as a concept test. It was possible to obtain good amount and concentration of DNA from individuals. Quality was sufficient to grant subsequent ITS1 sequencing.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genética Molecular; Entomologia Florestal; Controle Biológico DNA extraction; Protocol; Woodwasp; Sirex Noctilio Extração de DNA; Protocolo; Vespa-da-madeira; Sirex Noctilio.
Ano: 2012 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/396
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Sample size for monitoring sirex populations and their natural enemies PFB - Pesquisa Florestal Brasileira
Penteado, Susete do Rocio Chiarello; Oliveira, Edilson Batista de; Iede, Edson Tadeu.
The woodwasp Sirex noctilio Fabricius (Hymenoptera: Siricidae) was introduced in Brazil in 1988 and became the main pest in pine plantations. It has spread to about 1.000.000 ha, at different population levels, in the states of Rio Grande do Sul, Santa Catarina, Paraná, São Paulo and Minas Gerais. Control is done mainly by using a nematode, Deladenus siricidicola Bedding (Nematoda: Neothylenchidae). The evaluation of the efficiency of natural enemies has been difficult because there are no appropriate sampling systems. This study tested a hierarchical sampling system to define the sample size to monitor the S. noctilio population and the efficiency of their natural enemies, which was found to be perfectly adequate.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Recursos Florestais Proteção Florestal hierarchical sampling Sirex noctilio control nematode parasite Amostragem hierárquica; Sirex noctilio; Nematoide.
Ano: 2016 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/788
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Sciarid fungus-gnats as nuisance factor in Pinus timber yards PFB - Pesquisa Florestal Brasileira
Schuhli, Guilherme Schnell e; Penteado, Susete do Rocio Chiarello; Reis Filho, Wilson; Amorim, Dalton Souza.
Some Sciaridae species are considered as cosmopolitan pests in greenhouses and mushrooms farms. The potential harm of these insects involves plant tissue damage and transmission of pathogens to the seedlings. Recently, large sciarid masses were found infesting wood log stocking of processing industries and turned to be a severe nuisance factor and a public health issue. The Sciarid specimens from infested areas were identified belonging to the genus Bradysia Winnertz, 1867. These species certainly do not correspond to pests, but to species that are possibly associated to microenvironments generated by the fungi on the wood bark.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Entomologia Florestal Bradysia; Entomology; Urban Infestation; Wood stocking; Fungus-gnats Bradysia; Entomologia; Infestação urbana; Estocagem de madeira; Fungus-gnats.
Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/732
Registros recuperados: 6
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