Electrophysiological and morphological characteristics of pheromone receptors in male pine sawflies, Diprion pini (Hymenoptera : Diprionidae), and behavioural response to some compounds

Anderbrant, O.Lund University,Lunds universitet,Funktionell zoologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Functional zoology,Department of Biology,Faculty of Science (författare)

The morphology and physiology of pheromone receptors on the antennae of male pine sawflies, Diprion pini L., were investigated. Using scanning electron microscopy, five sensillar types were recognized. The type shown to be pheromone sensitive has a long (50-70 μm) cuticular hair, is single-walled, and is innervated by 8 or 9 sensory cells as revealed by transmission electron microscopy. Electroantennography (EAG) showed similar activity of the acetate and propionate of (2S,3R,7R)-3,7-dimethyl-2-tridecanol, precursor of the main constituent of the female-produced sex pheromone. No other isomer induced any significant response. Single-sensillum recordings confirmed the results of the EAG, and also showed that several neurons were excited by the active compound. EAG recordings and combined gas chromatographic-electroantennographic detection indicated that esters of three 3,7-dimethyl-2-pentadecanol (diprionol) isomers were active, but field tests could not demonstrate any behavioural effect. Diprionol esters are used as sex pheromones by all other pine sawflies investigated so far, and D. pini is thus the first diprionid species shown to use a different sex pheromone.

Hallberg, E.Lund University,Lunds universitet,Funktionell zoologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Functional zoology,Department of Biology,Faculty of Science(Swepub:lu)zool-eha (författare)
Geri, C.INRA Val de Loire Centre (författare)
Varama, M.Natural Resources Institute Finland (Luke) (författare)
Hedenström, E.Mid Sweden University (författare)
Högberg, H. E.Mid Sweden University (författare)
Fägerhag, J.Mid Sweden University (författare)
Edlund, H.Mid Sweden University,Lund University,Lunds universitet,Biofysikalisk kemi,Centrum för Molekylär Proteinvetenskap,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biophysical Chemistry,Center for Molecular Protein Science,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fek-hke (författare)
Wassgren, A. B.University of Gothenburg (författare)
Bergström, G.University of Gothenburg (författare)
Hansson, Bill S.Max Planck Institute for Chemical Ecology (författare)
Funktionell zoologiBiologiska institutionen (creator_code:org_t)

Av författaren/redakt...: Anderbrant, O.; Hallberg, E.; Geri, C.; Varama, M.; Hedenström, E.; Högberg, H. E.; visa fler...; Fägerhag, J.; Edlund, H.; Wassgren, A. B.; Bergström, G.; Hansson, Bill S.; visa färre...

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