Various layer traits were recorded on 1082 pullets at 29 generation of selection to evaluate the variability for egg production. Oviposition time of each egg was recorded at hourly and half an hour intervals under 16L: 8D cycle, up to 40 weeks of age and for 15 days period respectively, to study the distribution pattern of oviposition time. Early (06-11h) and late (11-17 h) pattern of ovipositi...

The European cherry fruit fly, Rhagoletis cerasi (L.) (Diptera: Tephritidae), is a highly destructive pest. Methods to control it are limited and alternatives are needed. Observations of cherry fruit flies suggest that females exert much effort to penetrate cherries at color change stage (from green to yellow) for oviposition. Therefore, the question arose as to whether a physical barrier on th...

The breeding habitat of sandflies is a little studied and poorly understood phenomenon. More importantly, oviposition behaviour is a largely neglected aspect of sandfly biology and this knowledge gap further undermines our understanding of the biology of sandflies. Pheromones released by the eggs play an important role in identifying good sites for oviposition by female insects. Several recent ...

A prerequisite for the evolutionary stability of pollinating seed-consuming mutualisms is that each partner benefits from the association. However, few studies of such mutualism have considered the benefit gained by the pollinators. Here, we determined how the pollinating seed-predators ensure the provisioning of their offspring in the recently discovered mutualism between Rheum nobile and Brad...

Effects of photoperiod on development, survival, feeding, and oviposition of boll weevils, Anthonomus grandis grandis Boheman, were assessed under Þve different photophases (24, 14, 12, 10, and0h) at a constant 27 Ctemperature and65%RHin the laboratory.Analyses of our results detected positive relationships between photoperiod and puncturing (mean numbers of oviposition and feeding punctures pe...

ABSTRACT Silicon is an inducer of plant resistance to arthropod pests, being a promising strategy for integrated management. The aim this study was evaluate the effect silicon on biological, reproductive and population aspects parental F1 generations two-spotted spider mite strawberry plants. Potassium silicate, nanosilica water were applied Two-spotted females confined leaf disks oviposition a...

The leaf extract of Solanum trilobatum (Solanaceae) was tested under laboratory conditions for oviposition deterrent and skin repellent activities against the adult mosquito Anopheles stephensi. Concentrations of 0.01, 0.025, 0.05, 0.075 and 0.1% reduced egg laying by gravid females from 18 to 99% compared to ethanol-treated controls. In skin repellent tests, concentrations of 0.001, 0.005, 0.0...

The improvement of techniques for the mass rearing predators in laboratory, including age mating is important to obtain largest number individuals biological control programs. purpose this study was evaluate females’ fecundity predator Podisus fuscescens (Dallas, 1851) (Hemiptera: Pentatomidae) with different pre-mating periods. females were mated immediately after emergence (T1) or one (T2), t...