Data/hora: 09/06/2024 08:20:20

Biblioteca(s): | Embrapa Café.
Data corrente: | 16/04/2012
Data da última atualização: | 09/05/2012
Autoria: | SCALON, J. D.; AVELAR, M. B. L.; ALVES, G. de F.; ZACARIAS, M. S.
Afiliação: | JOÃO DOMINGOS SCALON, UFLA; MARIA BETANIA LOPES AVELAR, UFLA; GABRIEL DE FREITAS ALVES, UFLA; MAURICIO SERGIO ZACARIAS, SAPC.
Título: | Spatial and temporal dynamics of coffee-leaf-miner and predatory wasps in organic field in formation.
Ano de publicação: | 2011
Fonte/Imprenta: | In: Ciência Rural, Santa Maria, v. 41, n.4, p. 646-652, abr, 2011.
Idioma: | Inglês
Conteúdo: | The coffee production is an economic mainstay for many countries in the world. Brazil is the world?s largest producer and exporter of coffee, being responsible for about 25% of the world production. It is well known that coffee plantations are susceptible to more than 850 fungal and insect pests. Among these pests, the most important significant throughout Brazil is the coffee-leaf-miner, [Leucoptera coffeella (Guérin-Mèneville & Perrottet, 1842) (Lepidoptera: Lyonetiidae)]. It is estimated that the loss in yield due to infestation by L. coffeella moths can increase to as much as 80% in areas where the coffee-leaf-miner larvae are not controlled. Though it is effective, the chemical control of the pest substantially increases the cost of production and constitutes a risk to the environment. The knowledge about the spatialtemporal dynamics of coffee-leaf-miner and predatory wasps may provide valuable information about the biological management pest context. One way to investigate the spatialtemporal synchronism of predator and prey is to calculate and compare an index of spatial randomness within a sequence time. This paper advocates using the Morisita?s index, coupled with the bootstrap method, in a temporal sequence to characterize the spatial- temporal dynamics of coffee-leaf-miner and predatory wasp (Hymenoptera: Vespidae) in one hectare of an organic coffee plantation. The results showed that coffeeleaf- miner and predatory wasps presented a seasonal behavior with a temporal synchronism. The results also showed that both new and preyed mines were aggregated during the peak population (dry season). There was little evidence for space spacetime interaction between coffee-leaf-miner and predatory wasps.
Thesagro: | Leucoptera Coffeella.
Thesaurus Nal: | Hymenoptera; Vespidae.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/57715/1/Spatial-and-temporal-dynamics.pdf
Registro original: | Embrapa Café (CNPCa)
Exemplares: | CNPCa - (642-1) - UPC - AP - DD -  -  -  - DIS