To improve the effectiveness of biological control procedures, it is necessary to quantify survival rate a natural enemy through various stages life cycle, fecundity rate, and predation from birth death. It not only important obtain all parameters associated with table, but also in table framework. For this purpose, history, population parameters, Eupeodes corollae (Fabricius) (Diptera: Syrphid...

Understanding how fertilization affects host resistance to hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), is important because fertilizers are often used to grow resistant selections to a suitable size for testing. We evaluated four hemlock species (Tsuga) under three different fertilizer regimes to assess whether fertility affected resistance to the adelgid and to determ...

Experimental life tables were constructed and analyzed for three strains of the common bed bug: a pyrethroid-susceptible laboratory strain (HS), a highly resistant field strain (RR), and a field strain with a declining level of resistance (KR). Egg to adult survival in the RR strain was 94% compared with 79% and 69% in the HS and KR strains, respectively. The RR strain also developed significan...

We studied the distribution of hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), within hemlock trees for three summer (progrediens) and two winter (sistens)generations innorthernGeorgia.Easternhemlock,Tsugacanadensis(L.)Carrière, treeswere treated with 0, 10, or 25% of 1.5 g of imidacloprid per 2.5 cm of tree diameter at breast height and fertilized or not in a factorial de...

virulence of blastospores and conidia of the fungus metarhizium anisopliae were investigatedon different instar nymphs and adults of sunn pest, eurygater integriceps. experiments werecarried out through a factorial arrangement in a completely randomized design of threereplications. the bioassays were performed through immersion method. results revealedsignificant differences among virulence of ...

We studied the distribution of hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), within hemlock trees for three summer (progrediens) and two winter (sistens) generations in northern Georgia. Eastern hemlock, Tsuga canadensis (L.) Carrière, trees were treated with 0, 10, or 25% of 1.5 g of imidacloprid per 2.5 cm of tree diameter at breast height and fertilized or not in a fa...

With the phase-out and impending ban of methyl bromide, sulfuryl fluoride is among the most promising alternative fumigant insecticides for control of stored-product insect pests. It has been evaluated for control of several stored-product insect pests, but there are few data available on its efficacy for control of stored-product psocids (Psocoptera). We evaluated sulfuryl fluoride for control...

For the silverleaf whitefly, Bemisia argentifolii (Bellows and Perring) (Homoptera: Aleyrodidae), scanning and transmission electron microscopic techniques were used to observe the characteristics of egg oviposition into both plant cells/tissues and artificial membranes, and to document the morphology of mature egg pedicles removed from the ovaries of females. The exterior of the distal portion...

Halyomorpha halys (Stål) (Heteroptera: Pentatomidae), the brown marmorated stink bug, is an invasive agricultural and nuisance pest rapidly expanding its incidence in North America. This voracious pest poses a significant threat to rural and urban agriculture, especially to specialty crops such as apples, grapes and ornamentals, as well as staple crops including soybean and corn. The object of ...

Experiments on in vitro feeding of the hard ticks Ixodes ricinus, Boophilus microplus, Amblyomma variegatum and Amblyomma hebraeum are described. An in vitro test for systemic acaricides is presented. Work started with a feeding chamber continuously supplied with new blood. It proved too susceptible to fungal contamination and not efficient enough. Simple feeding units made of honey jars with a...