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71 results on '"Zarbin, P. H. G."'

36. Potencial de utilização de armadilhas iscadas com o feromônio sexual do percevejo marrom, Euschistus heros (Heteroptera: Pentatomidae), para o monitoramento populacional de percevejos praga da soja

Author

PIRES, C. S., SUJII, E. R., SCHMIDT, F. G. V., ZARBIN, P. H. G., ALMEIRA, J. R. M. de, BORGES, M., Carmen Silva Pires, Embrapa Recursos Genéticos e Biotecnologia, Edison Ryoiti Sujii, Embrapa Recursos Genéticos e Biotecnologia, Francisco Guilherme Vergolino Schmidt, Embrapa Recursos Genéticos e Biotecnologia, Paulo H. G. Zarbin, Universidade Federal do Paraná, João R. M. de Almeida, Universidade de Brasília, and Miguel Borges, Embrapa Recursos Genéticos e Biotecnologia.

Subjects
Monitoramento populacional, Praga de Planta, Euschistus Heros, Feromônio, Percevejo marron
Abstract

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Published
2006

44. Mating behaviour and evidence for sex-specific pheromones in Hedypathes betulinus (Coleoptera: Cerambycidae: Lamiinae).

Author

Fonseca, M. G. and Zarbin, P. H. G.

Subjects
*ANIMAL courtship, *ANIMAL sexual behavior, *PHEROMONES, *HORMONES, *SEX recognition (Zoology), *SEMIOCHEMICALS
Abstract

The mating behaviour and evidence for sex-specific pheromones of the main pest of green mate, Ilex paraguariensis, of the southern region of Brazil, Hedypathes betulinus (Klug, 1825) (Coleoptera: Cerambycidae: Lamiinae), were studied in the laboratory. The mating sequence of H. betulinus includes: female approaching the male, antennal contact, male mounting the female and start of copulation. This mating sequence provided support for our hypothesis that recognition of males by females may be mediated by a male-produced pheromone and males recognize females by contact pheromones. The behavioural responses in an olfactometer of male and female H. betulinus to volatiles released by male and female conspecifics confirmed the presence of a male-produced sex pheromone. This finding suggests that visual cues are not primary in eliciting a sexual response from females. Three male-specific compounds were detected in the chromatographic analysis, providing chemical support to the behavioural data. Males did not respond to dead-washed females but 70% of males attempted to mate with dead-washed extract-treated females, suggesting that extracts contained contact pheromones. Based on these results, a male-produced sex pheromone and a female-produced contact pheromone should be essential in the communication system of H. betulinus. [ABSTRACT FROM AUTHOR]

Published
2009
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45. Exocrine Secretions of Wheel Bugs (Heteroptera: Reduviidae: Arilus spp.): Clarification and Chemistry

Author

Aldrich, Jeffrey R., Chauhan, Kamlesh R., Zhang, Aijun, and Zarbin, Paulo H. G.

Abstract

Wheel bugs (Heteroptera: Reduviidae: Harpactorinae: Arilus) are general predators, the females of which have reddish-orange subrectal glands (SGs) that are eversible like the osmeteria in some caterpillars. The rancid odor of Arilus and other reduviids actually comes from Brindley's glands, which in the North (A. cristatus) and South (A. carinatus) American wheel bugs studied emit similar blends of 2-methylpropanoic, butanoic, 3-methylbutanoic, and 2-methylbutanoic acids. The Arilus SG secretions studied here are absolutely species specific. The volatile SG components of A. carinatus include (E)-2-octenal, (E)-2-nonenal, (E)-2-decenal, (E,E)-2,4-nonadienal, (E)-2-undecenal, hexanoic acid, 4-oxo-nonanal, (E,E)-2,4-decadienal, (E,Z)-2,4- or (Z,E)-2,4-decadienal, and 4-oxo-(E)-2-nonenal; whereas in A. cristatus the SG secretion contains β-pinene, limonene, terpinolene, terpinen-4-ol, thymol methyl ether, α-terpineol, bornyl acetate, methyl eugenol, β-caryophyllene, caryophyllene oxide, and farnesol. Arilus spp. SG secretions may be sex pheromones, but verification of this hypothesis requires further testing.

Published
2013
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48. Pheromone bouquet of the dried bean beetle, Acanthoscelides obtectus (Col.: Chrysomelidae), now complete

Author

Vuts, J., Francke, W., Mori, K., Zarbin, P. H. G., Hooper, A. M., Millar, J. G., Pickett, J. A., Toth, M., Chamberlain, K., Caulfield, J. C., Woodcock, C. M., Troger, A. G., Balintne Csonka, E., and Birkett, M. A.

Subjects
Chemistry, Organic
Abstract

Male-specific volatile components, released by the dried bean beetle, Acanthoscelides obtectus, were identified as methyl (E,R)-2,4,5-tetradecatrienoate, methyl (2E,4Z,7Z)-2,4,7-decatrienoate, methyl (2E,4Z)-2,4-decadienoate, octadecanal and the sesquiterpenes (3Z,6E)- and (3E,6E)-alpha-farnesene. In olfactometer bioassays, pure methyl (E, R)-2,4,5-tetradecatrienoate was only weakly attractive to unmated females. However, a blend of the six identified compounds released in physiologically relevant ratios and doses proved to be as active as headspace odours collected from live males.

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