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Sex pheromones of Phyllonorycter acerifoliella and Ph. heegerella and communication peculiarities in three species of leafmining moths
Author(s) -
Mozūraitis R.,
Būda V.,
Jonušaite V.,
BorgKarlson A.K.,
Noreika R.
Publication year - 2000
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1046/j.1570-7458.2000.00599.x
Subject(s) - sex pheromone , semiochemical , lepidoptera genitalia , gracillariidae , pheromone , biology , attraction , botany , electroantennography , zoology , stereochemistry , chemistry , linguistics , philosophy
Females of the leaf miner moth Phyllonorycter acerifoliella (Z.) [= Ph. sylvella (Hw.)] and Ph. heegerella (Z.) (Lepidoptera: Gracillariidae: Lithocolletinae) release their sex pheromone at the beginning of photophase. The periodicity of the ‘calling’ behaviour of Ph. acerifoliella females was established. Three compounds from calling virgin Ph. heegerella females were collected by the Solid Phase Micro Extraction (SPME) technique and identified as ( Z )‐8‐tetradecenyl acetate ( Z 8‐14:OAc), tetradecyl acetate (14:OAc) and ( Z )‐8‐tetradecenol ( Z 8‐14:OH) in the ratio (88±3):(2±0.6):(10±5) by capillary gas chromatography and mass spectrometry. Field trapping experiments demonstrated that the first two compounds are important for the attraction of conspecific males. Z 8‐14:OAc was found to be attractive when tested separately, while 14:OAc acted as synergist. The attractivity of the three component blend was reduced by 10% admixture of either ( E )‐10‐dodecenyl acetate ( E 10‐12:OAc) or ( Z )‐10‐tetradecenyl acetate ( Z 10‐14:OAc). Field tests of Z 10‐, Z 8‐ and E 10‐14:OAc, identified from Ph. acerifoliella females, demonstrated that the first two compounds were essential for the attraction of conspecific males; so both are sex pheromone components. The attractivity of the three component blend of Z 10‐ Z 8‐ and E 10‐14:OAc was reduced by 10% admixture of ( E )‐10‐dodecenol ( E 10‐12:OH). The following four semiochemical compounds, Z 8‐14:OAc, Z 8‐14:OH, E 10‐14:OAc and 14:OAc, identified from phyllonoryctid females, as well as two sex attraction antagonists for Ph. acerifoliella and Ph. heegerella males, E 10‐12:OAc and Z 10‐14:OAc, are new for the family Gracillariidae. The results of field trapping experiments revealed mechanisms ensuring the specificity of the chemocommunication systems in Ph. acerifoliella, Ph. heegerella and Ph. ulmifoliella (Hb.) moths.