Insect pheromone synthesis in Brazil: an overview

Zarbin, Paulo H. G.; Villar, José Augusto Ferreira Perez; Corrêa, Arlene G.

doi:10.1590/s0103-50532007000600003

Cited by 12 publications

(11 citation statements)

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“…[28][29][30] However, in field experiments using all the four possible stereoisomers synthesized by Kuwahara et al 29 it was observed that the traps baited with pure stereoisomers were poor attractive 30 while the binary mixture of the 5S,9S-(1) and 5R,9S-(1) isomers were attractive comparable to a stereoisomeric mixture of (1). 32,33 …”

Section: Resultsmentioning

confidence: 99%

Age and time related pheromone production in coffee leafminer Leucoptera coffeella Guérin-Méneville (Lepidoptera: Lyonetiidae)

Lima¹,

Vilela²,

Lúcia³

et al. 2008

J. Braz. Chem. Soc.

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Este estudo foi feito para determinar o padrão de produção de feromônio sexual em glândulas de fêmeas virgens de Leucoptera coffeella como uma medida indireta do comportamento de chamamento. O composto principal, 5,9-dimetilpentadecano (1) foi extraído de glândulas de feromônio de fêmeas virgens para ser usado em dois experimentos. No primeiro foi investigado o efeito do tempo na produção do feromônio (extratos de 10 fêmeas de dois dias de idade em intervalos de duas horas) e no outro foi avaliado o efeito da idade das fêmeas na produção de feromônio (10 fêmeas com idade entre 1 e 5 dias após a emergência). Os extratos hexânicos contendo 5 ng µL -1 de 5,9-dimetilheptadecano (2) como padrão interno foram analisados por CG. As fêmeas tiveram as maiores quantidades de feromônio nas últimas quatro horas da escotofase e nas duas primeiras horas da fotofase. Fêmeas de um dia de idade produziram as maiores quantidades de feromônio na glândula.This study was undertaken to access the pattern of sex pheromone production in glands of virgin females of Leucoptera coffeella as an indirect measure of the calling behavior. The major compound, 5,9-dimethylpentadecane (1) was extracted from pheromone glands of virgin females to be used in two experiments. The first one investigated the effect of the pheromone production time by females (extracts of 10 females with age of two days were carried out at 2-hour intervals). The other experiment evaluated the effect of female age on pheromone production (10 females with age ranged from 1 to 5 days after emergence class were used). Hexane extracts were made with 5 ng µL -1 of 5,9-dimethylheptadecane (2) as internal standard and analyzed by GC. Females had the highest amount of pheromone at the last four hours in the dark and the two first hours in the light period. One-day old females produced the highest amount of pheromone in the glands.Keywords: Leucoptera coffeella, Lepidoptera, sex pheromone, 5,9-dimethylpentadecane, pheromone titer, coffee leaf miner IntroductionCoffee leafminer (CLM) Leucoptera coffeella (Guérin-Méneville) is an important and widely distributed pest among the main coffee-producing countries in the Neotropical region. 1,2 In Brazil, it is considered a key pest of the coffee plant and causes losses up to 50% in production, due to the loss of photosynthetic area as a consequence of necrosis of the leaf surface, and early leaf fall when larval infestation is high. 2 The inclusion of CLM sex pheromone in programs of integrated pest management of coffee through population monitoring has been pointed out by Precetti and Parra. 3 The sex pheromone was previously identified as 5,9-dimethylpentadecane (1). 4 Several aspects of pheromone biology may change significantly with age. In some species, most females initiate calling within 24 h of emergence, 5,6 while in other individuals vary considerably in the age at which calling starts. 7,8 In several species, pheromone titer in the gland changes both with age and time during the scotophase or photophase. [9][10][11][12] To a...

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Section: Resultsmentioning

confidence: 99%

Age and time related pheromone production in coffee leafminer Leucoptera coffeella Guérin-Méneville (Lepidoptera: Lyonetiidae)

Lima¹,

Vilela²,

Lúcia³

et al. 2008

J. Braz. Chem. Soc.

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“…The syntheses of pheromone compounds developed by Brazilian research groups have been reviewed most recently 100 and are not further discussed here. Another review presented by Brazilian authors summarized the syntheses of naturally occurring medium-sized lactones.…”

Section: Syntheses Of Pheromonesmentioning

confidence: 99%

Insect pheromone research in South America

Bergmann

González

Zarbin

2009

J. Braz. Chem. Soc.

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As pesquisas com feromônios de insetos tem uma longa e rica história, construída, primariamente, pelos estudos conduzidos no hemisfério Norte. Não é surpresa que estes estudos tenham apontado, em grande parte, para espécies relevantes dessas regiões do mundo, na maioria pragas agrícolas e florestais. As investigações com feromônios nos países da América do Sul vieram somente algumas décadas atrás, apesar da sua forte dependência agrícola e, conseqüentemente, no manejo de pragas. Nos últimos 20 anos, fatores econômicos, ambientais e técnicos têm caminhado juntos para gerar um pequeno, mas crescente, número de ecologistas químicos trabalhando na química e biologia dos feromônios na América do Sul. Neste artigo, foram compilados os resultados desta tendência. Foram revisados os estudos feitos com feromônios nos quais os cientistas da América do Sul têm participado em parceria com cientistas estrangeiros, majoritariamente grupos de química, como também os estudos realizados dentro da região. O principal objetivo são as pesquisas que envolvem a caracterização dos feromônios de espécies nativas, as quais compreendem as ordens mais importantes como Lepidoptera, Coleoptera, Heteroptera e Himenoptera. É também apresentada uma meta-análise, incluindo a distribuição geográfica, a tendência dos trabalhos de colaboração ou independente, e a evolução nos últimos 20 anos dos artigos publicados na área. Finalmente, é enfatizada a importância do esforço coordenado para promover o avanço deste campo na América Latina, através do respaldo e colaboração internacional dentro da região. Esta meta deverá ser alcançada através de uma organização acadêmica regional, incumbida da realização contínua de encontros científicos.Insect pheromone research has a long and rich history built up primarily by studies conducted in the Northern hemisphere. Not surprisingly, these studies have largely targeted species relevant to these regions of the world, for the most part agricultural and forest pests. Pheromone research in South American countries came a few decades behind, albeit their strong dependence in agriculture and therefore in pest management. In the last 20 years, a combination of economic, environmental and technical factors have come together to generate a small but rising number of chemical ecologists working in pheromone chemistry and biology in South America. In this article we summarize the results of this trend. We review pheromone studies in which South American scientists have participated in collaboration with foreign scientists, mostly chemistry groups, as well as the ever-growing number of studies carried out completely within the region. We have focused mainly in research involving the characterization of pheromones from native species, which involve the most important insect orders, namely Lepidoptera, Coleoptera, Heteroptera and Hymenoptera. We also present a simple meta-analysis including geographical distribution, trends in collaborative or independent work, and a 20-year evolution of published articles in the field. Fin...

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“…4,5 The function of plant secondary metabolites in mediating insect-plant interactions has been addressed in several studies 6,7 and more recently, the specificity of Piper-insects relationship and the metabolism of secondary compounds by herbivorous insects has been investigated. 8,9 Herein, we describe the hydrolysis of methyl benzoic acid derivative 1 to 3-geranyl-4-hydroxybenzoic acid (2) during the digestive process of P. arboreum leaves by N. bipes beetles.…”

Section: Methylenedioxyphenyl)-7(e)9(z)-pentadienoyl]-pyrrolidine Amentioning

confidence: 99%