Agrotis segetum

Fig. 8.2. Geographic variation in male attraction to pheromone in the turnip moth, Agrotis segetum as percentage capture at 11 localities in Eurasia and Africa. The numbers above each column indicate the highest catch of the best lure. Z5, (Z)-5-decenyl acetate Z7, (Z)-7-dodecenyl acetate and Z9, (Z)-9-tetradecenyl acetate. Within each diagram, differing letters indicated = 0.05. (FromToth et al, 1992.)...

Fig. 8.3. Geographic variation in the ratio of pheromone components in the female sex pheromone and the relative abundance of the male antennal sensilla attuned to these components in the turnip moth, Agrotis segetum. (From Lofstedt, 1993.)...

Hansson, B. S., T6th, M., Lofstedt, C., Szocs, G., Subchev, M. and Lofqvist, J. (1990). Pheromone variation among eastern European and western Asian populations of the turnip moth Agrotis segetum. Journal of Chemical Ecology 16 1611-1622. 

LaForest, S Wu, W. and Lofstedt, C. (1997). A genetic analysis of population differences in pheromone production and response between two populations of the turnip moth, Agrotis segetum. Journal of Chemical Ecology 23 1487-1503. 

T6th, M., Lofstedt, C., Blair, B. W. el al. (1992). Attraction of male turnip moths Agrotis segetum (Lepidoptera Noctuidae) to sex pheromone components and their mixtures at 11 sites in Europe, Asia, and Africa. Journal of Chemical Ecology 18 1337-1347. 

Wu W. Q., Zhu J. W., Millar J. and Lofstedt C. (1998) A comparative study of sex pheromone biosynthesis in two strains of the turnip moth, Agrotis segetum, producing different ratios of sex pheromone components. Insect Biochem. Mol. Biol. 28, 895-900. 

Lepidoptera Agrotis segetum Asegr-PBP AH007940 LaForest et al. (1999)... 

LaForest S. M., Prestwich G. D. and Lofstedt C. (1999) Intraspecific nucleotide variation at the pheromone binding protein locus in the turnip moth, Agrotis segetum. Insect Mol. Biol. 8, 481-490. 

Norinder U., Gustavsson A.-L. and Liljefors T. (1997) A 3D-QSAR study of analogs of (Z)-5-decenyl acetate, a pheromone component of the turnip moth, Agrotis segetum. J. Chem. Ecol. 23, 2917-2934. 

Gadenne C., Picimbon J.F., Becard J.M., Lalanne-Cassou B. and Renou M. (1997) Development and pheromone communication systems in hybrids of Agrotis ipsilon and Agrotis segetum (Lepidoptera Noctuidae). J. Chem. Ecol. 23, 191-209. 

Lofstedt C., Lofsqvist J., Lanne B. S., Van Der Pers J. C. N. and Hansson B. S. (1982) Sex pheromone components of the turnip moth, Agrotis segetum, chemical identification, electrophysiological evaluation and behavioral activity. J. Chem. Ecol. 8, 1305-1321. 

Wu W. Q., Cottrell C. B., Hansson B. S. and Lofstedt C. (1999) Comparative study of pheromone production and response in Swedish and Zimbabwean populations of turnip moth, Agrotis segetum. J. Chem. Ecol. 25, 177-196. 

Cutworm [Lepidoptera Noctuidae] Agrotis segetum Denis Schiffermiiller... 

Cutworms (Lepidoptera Noctuidae) are generalists whose large caterpillars (50 mm long) attack plant stems at ground level and tubers in the soil, especially near the soil surface. The cutworm Agrotis segetum Denis Schiff. has been recorded feeding on Jerusalem artichoke (CAB International, 2001). 

B.S. Hansson, S. Anton and T.A. Christensen, Structure and function of antennal lobe intemeurons in the male turnip moth, Agrotis segetum (Lepidoptera Noctuidae), J. Comp. Physiol. A 175 (1994) 547-562. 

SVENSSON, M.G.E., BENGTSSON, M., LOFQVIST, J., Individual variation and repeatability of sex pheromone emission of female turnip moths Agrotis segetum. J. Chem. EcoL, 1997, 23, 1833-1850. 

ANDERS0N, P., LARSS0N, M., L0FQVIST, J., HANSS0N, B. S., Plant odour receptor neurones on the antennae of the two moths Spodoptera littoralis and Agrotis segetum, EntomoL Exp. Appl., 1996, 80, 32-34. 

Fig. 2 (Z)-5-decenyl acetate and conformationally restrained analogues reveal structural requirements for peripheral detection by the turnip moth, Agrotis segetum.

There have been two cases of conflicting identifications of sex pheromones from the same species. Although the previously identified primary attractant for Agrotis segetum has been confirmed as (Z)-5-decenyl acetate, together with (Z)-7- and (Z)-9-dodeceny1 acetates as secondary components, another report identifies only... 

Geographical variation in male response also appears to be documented in the noctuid Agrotis segetum. The attractant components Z5-10 Ac, Z7-12 Ac and Z9-14 Ac and their blends that evoke male catch appear to differ in Denmark, Switzerland, France and Hungary (Arn et al., 1982). Geographical differences in pheromone production and response occur in Ostrinia nubilalis, the European corn borer, and will be considered in Section 13.3.6. 

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