The role of natural-enemy escape in a gallmaker host-plant shift

Oecologia ◽  
1995 ◽  
Vol 104 (1) ◽  
pp. 52-60 ◽  
Author(s):  
J. M. Brown ◽  
W. G. Abrahamson ◽  
R. A. Packer ◽  
P. A. Way
Keyword(s):  
Host Plant ◽  
Natural Enemy ◽  
Enemy Escape ◽  
Host Plant Shift

Diapause initiation and incidence in the millet stem borer, Coniesta ignefusalis (Lepidoptera: Pyralidae): the role of the host plant

2000 ◽  
Vol 90 (4) ◽  
pp. 365-371 ◽  
Author(s):  
P.B. Tanzubil ◽  
G.W.K. Mensah ◽  
A.R. McCaffery
Keyword(s):  
Host Plant ◽  
Pennisetum Glaucum ◽  
Stem Borer ◽  
Field Trials ◽  
Northern Ghana ◽  
Research Station ◽  
Coniesta Ignefusalis ◽  
Larval Diapause ◽  
Diapause Incidence

The role of the host plant in the development of larval diapause in the millet stem borer, Coniesta ignefusalis (Hampson) was investigated in northern Ghana in 1996 and 1997. Surveys conducted in farmers' fields in the Guinea and Sudan savannah revealed that of all the upland cereals grown, the insect survived the dry season only in stalks and stubble of pearl millet, Pennisetum glaucum and late sorghum, Sorghum bicolor. This observation was confirmed by results from field trials conducted at the Manga Research Station. In these studies, C. ignefusalis larvae entered diapause only in late millet and late sorghum, with a higher incidence in the former. The insect neither attacked nor entered diapause in maize planted during the same period as the other crops. Results from controlled experiments showed that diapause incidence in the preferred host, millet, was higher in older than in younger plants, suggesting that host plant maturation is a key factor influencing the development of larval diapause in C. ignefusalis.

scholarly journals Big-eged bugs Geocoris: Diets research and potential of use in prevention of a number of insect pests in Vietnam

2020 ◽  
Vol 9 (1) ◽  
pp. 70-77
Author(s):  
Nguyen Ngoc Bao Chau ◽  
Le Thuy To Nhu
Keyword(s):  
Sustainable Agriculture ◽  
Host Plant ◽  
Insect Pests ◽  
Short Review ◽  
Mass Rearing ◽  
Research Attention ◽  
Perennial Crops ◽  
The World ◽  
Agriculture Development

Big-eyed bugs Geocoris spp. (Lygaeidae, Hemiptera) are small insects that is found in many parts of the world. They are beneficial because they eat a multitude of insect pests in agriculture. Big-eyed bugs Geocoris spp. are insects that receive research attention in Florida and elsewhere because of the benefits that this species give to plants (Mead, 2001). Big-eyed bugs reproduce many generations in a year on weeds, perennial crops, bushes. In spring the female big-eyed bugs start laying eggs on the bud, the leaves of the host plant. Understanding the biology and the role of predator Geocoris spp. in ecosystem will provide an alternative method in sustainable agriculture development. In this short review, we discuss some convenient diets for the application of mass rearing Geocoris spp.

The role of host-plant odour and sex pheromones in mate recognition in the aphid Cryptomyzus

1992 ◽  
pp. 119-121 ◽  
Author(s):  
J. Adriaan Guldemond ◽  
A. F. G. Dixon ◽  
J. A. Pickett ◽  
L. J. Wadhams ◽  
C. M. Woodcock
Keyword(s):  
Host Plant ◽  
Sex Pheromones ◽  
Mate Recognition
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