Pharmacophagous acquisition of clerodendrins by the turnip sawfly (Athalia rosae ruficornis) and their role in the mating behavior

被引:25
作者
Amano, Takashi [1 ]
Nishida, Ritsuo [1 ]
Kuwahara, Yasumasa [1 ]
Fukami, Hiroshi [2 ]
机构
[1] Kyoto Univ, Grad Sch Agr, Lab Chem Ecol, Sakyo Ku, Kyoto 6068502, Japan
[2] Ritsumeikan Univ Noji, Fac Sci & Engn, Kusatsu 5255755, Japan
关键词
neo-clerodane diterpenoids; clerodendrins; Clerodendron trichotomum; Verbenaceae; Athalia rosae ruficornis; turnip sawfly; Tenthredinidae; feeding stimulants; pharmacophagy; defense substance; sex pheromone;
D O I
10.1007/s000490050046
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Adults of the turnip sawfly, Athalia rosae ruficornis (Tenthredinidae: Hymenoptera), frequently visit a plant, Clerodendron trichotomum (Verbenaceae), and feed pharmacophagously on the glandular trichomes on the leaf surface. A series of neo-clerodane diterpenoids (e. g. clerodendrins B and D) contained in glandular organs on the leaf surface stimulate feeding of the sawflies (both males and females). The adults fed selectively on the trichomes were found to sequester a series of the bitter-tasting diterpenes (clerodendrin D, ajugachin A, athaliadiol) in the body tissues, which suggested their primary role as defense substances against predators. Females fed on Clerodendron leaves or on clerodendrin B or D were more successful in mating than unfed females. Thus, females seem to obtain an advantage in mating success through the acquisition of the defensive principles from the Clerodendron plant.
引用
收藏
页码:145 / 150
页数:6
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