
TY  - JOUR
A1  - Jallow, MFA 
A1  - Zalucki, MP 
T1  - Within- and Between-Population Variation in Host-Plant Preference and Specificity in Australian Helicoverpa Armigera (Hubner) (Lepidoptera: Noctuidae).
JF  - Australian Journal of Zoology
JO  - Aust. J. Zool.
Y1  - 1996
VL  - 44
IS  - 5
SP  - 503
EP  - 519
KW  - 
UR  - https://doi.org/10.1071/ZO9960503 
N2  - Using a tethered-insect technique, we investigated within- and between-population variation in the post-alighting host-plant preference and specificity of female Helicoverpa armigera from four populations. No significant difference occurred among populations in host-plant preference. Differences in host-plant preference existed among female moths within a population, and these differences are under genetic control and heritable. Most females ranked maize, sorghum and tobacco highest, followed by cotton varieties DP90 and HG660. The least-preferred plants were cowpea and lucerne. A few females (20%) differed from this general pattern and among each other, and reversed the rank order of host plants. Within a population, individual female moths differed in their host-plant specificity, with some individuals being more generalist than others. Similarly, significant differences occurred in host-plant specificity among populations. The relevance of these findings are discussed in relation to polyphagy in H. armigera. 
ER  -

