pepper plant capsicum annuum l. has great nutritional value and many pharmaceutical properties but its sensitivity to pests such as aphis gossypii glover, especially in drought stress conditions, has limited its production. to evaluate the effect of drought stress on the population and damage rate of this pest in greenhouse condition, four moisture treatments including; full irrigation, 15, 30 ...

life table gives the most comprehensive explanation of the survivorship, development, and reproduction of a population. the life table parameters of an aphidophagous midge, aphidoletes aphidimyza were studied on different densities (5, 10, 20, 40, 60, 80) of third instar nymphs of aphis gossypii as prey in a growth chamber (25 ± 1 °c, 70 ± 5% rh and a photoperiod of 16l: 8d h). the pre-oviposit...

Behavioral flexibility and species invasions T.F. Wright et al. T.F. WRIGHT *, J.R. EBERHARD *, E.A. HOBSON , M.L. AVERY 3 and M.A. RUSSELLO 4 1 Department of Biology MSC 3AF, New Mexico State University, Las Cruces, NM 88003, USA 2 Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA 3 USDA/APHIS/WS, National Wildlife Research Center, Florida Field Station,...

The green apple aphid (Aphis pomi De Geer 1783) and the spirea aphid (Aphis spiraecola Patch 1914) are pests of apples in North America (Foottit et al. 2006). They play a role in disease transmission (Blackman and Eastop 2000) and affect healthy growth of their hosts (Kaakeh et al. 1993). Although management regimes exist to effectively control these pests, they differ significantly because of ...

Endosymbiosis with microorganisms is common in insects, with more than 10% of species requiring the metabolic capabilities of intracellular bacteria for their nutrient acquisition. Aphids harbor an obligate mutualism with the vertically transferred endosymbiont, Buchnera aphidicola, which produces key nutrients lacking in the aphid's phloem-based diet that are necessary for normal development a...