ISSN:
1573-1561
Schlagwort(e):
Parasitoid
;
Scelionidae
;
Tachinidae
;
Nezara
;
Euschistus
;
Eurydema
;
Acrosternum
;
Trissolcus
;
pheromone
;
kairomone
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Chemie und Pharmazie
Notizen:
Abstract Many terrestrial Heteroptera have small, but functional, dorsal abdominal glands as adults. The chemistry, and associated intra- and inter-specific behavior, for dorsal abdominal gland secretions from 10 species representing four genera of Pentatomidae was investigated. Eighteen volatile compounds were identified in species-specific blends from the dorsal abdominal gland secretions ofEuschistus, Acrosternum, andEurydema adults, including aliphatic, aromatic, and terpenoid constituents. Evidence from bioassays is presented that parasitic Tachinidae (Diptera) and Scelionidae (Hymenoptera) use these secretions as kairomones. A field experiment was performed to test the hypothesis that minor volatiles increase the specificity of the main pheromone component from NearcticEuschistus species, methyl (2E,4Z)-decadienoate. However, significantly fewer individuals ofE. tristigmus were captured in traps baited with the complete blend for this species than in traps baited with methyl (2E,4Z)-decadienoate alone. Thus, at the concentrations tested, these kinds of dorsal abdominal gland secretions may be epideictic, promoting spacing in the natural habitat.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02033851
Permalink
