Significance of host-plant phenology in the dynamics and pest incidence of the cotton bollworm, Heliothis armigera Hübner (Lepidoptera: Noctuidae), in Western Tanzania

1988 ◽  
Vol 7 (3) ◽  
pp. 161-167 ◽  
Author(s):  
Brigitte T. Nyambo
Keyword(s):  
Host Plant ◽  
Heliothis Armigera ◽  
Plant Phenology ◽  
Cotton Bollworm ◽  
Pest Incidence ◽  
Lepidoptera Noctuidae ◽  
Western Tanzania

scholarly journals The Biology and Ecology of Heliothis-Armigera (Hubner) and Heliothis-Punctigera Wallengren (Lepidoptera, Noctuidae) in Australia - What Do We Know

1986 ◽  
Vol 34 (6) ◽  
pp. 779 ◽  
Author(s):  
MP Zalucki ◽  
G Daglish ◽  
S Firempong ◽  
P Twine
Keyword(s):  
Host Plant ◽  
Population Biology ◽  
Host Plants ◽  
Control Strategies ◽  
Heliothis Armigera ◽  
Host Plant Selection ◽  
Mortality Factors ◽  
Insecticide Treatment ◽  
And Control ◽  
Lepidoptera Noctuidae

The taxonomy and identification of Heliothis armigera and H. punctigera, their distribution and host plants in Australia, the effect of host plant on reproduction and on the development and survival of immature stages, their movements, population biology and dynamics, and their control, are reviewed. Areas where further study is desirable include: the nature of host plant selection and host species preference; adaptability to new cultivars; effects of host plant on development; detailed life-table studies on different host plants; the contribution of predation, parasitism and disease to mortality; factors responsible for fluctuations in populations between years, including the origins of outbreak populations; and control strategies other than insecticide treatment.

Populations and host-plant preferences of Earias spp. (Lepidoptera, Noctuidae) in East Africa

1974 ◽  
Vol 64 (1) ◽  
pp. 33-44 ◽  
Author(s):  
W. Reed
Keyword(s):  
Host Plant ◽  
East Africa ◽  
Rainy Season ◽  
Dominant Species ◽  
Soil Types ◽  
Alternative Host ◽  
Undescribed Species ◽  
Farming Practices ◽  
Lepidoptera Noctuidae ◽  
Western Tanzania

AbstractIn this ecological survey conducted mainly in western Tanzania between 1962 and 1969, six species of Earias were found, including two undescribed species and E. cupreoviridis (Wlk.), which is restricted to Sida spp.; E. biplaga (Wlk.) and E. insulana (Boisd.) were the only species found on cotton and were virtually restricted to Malvales. Differences in the incidence of Malvales and the Earias larvae feeding on them were noted on a research farm and on surrounding local farms as being due to different farming practices and soil types. E. biplaga was the dominant species on cotton for most of each year and its major alternative host was Waltheria indica; E. insulana was relatively more common on cotton in the dry season and was particularly common on Abutilon spp. Populations of E. biplaga increased on W. indica early in the rainy season, then dispersed onto cotton; populations on cotton could be predicted from the size of earlier populations on W. indica and subsequent rainfall.

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