Olfactory reception of conspecific aggregation pheromone and plant odors by nymphs of the predator, Podisus maculiventris

Citation
J. Sant'Ana et al., Olfactory reception of conspecific aggregation pheromone and plant odors by nymphs of the predator, Podisus maculiventris, J CHEM ECOL, 25(8), 1999, pp. 1813-1826
Citations number
57
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF CHEMICAL ECOLOGY
ISSN journal
0098-0331 → ACNP
Volume
25
Issue
8
Year of publication
1999
Pages
1813 - 1826
Database
ISI
SICI code
0098-0331(199908)25:8<1813:OROCAP>2.0.ZU;2-J
Abstract
Olfactory reception of 23 odorants, including plant volatiles and male-prod uced aggregation pheromone, by third and fifth instars of the spined soldie r bug (SSB) Podisus,maculiventris was investigated by using electroantennog rams (EAGs). Both nymphal stages were sensitive to male-produced aggregatio n pheromone components (E)-2-hexenal, benzyl alcohol, and alpha-terpineol. The plant volatile, (E)-2-hexen-1-ol (a chemical known to be released by pl ants in response to prey feeding over the short-term), elicited the largest EAGs of all volatiles tested. While third instars were sensitive to nonana l, only fifth instars responded to both nonanal and (+/-)-linalool, both co mpounds released systemically by plants in response to feeding by potential prey. Antennal extirpation experiments showed that sensilla responsive to hexan-1-ol, (E)-2-hexenal, and cu-terpineol are situated mainly on the term inal antennal segment. The results support the hypothesis that P. maculiven tris nymphs use both plant volatiles and pheromone components in locating p otential prey and other behaviors.