Evaluation of Rubidium Chloride and Cesium Chloride Incorporated in a Meridic Diet to MarkDiatraea grandiosella(Lepidoptera: Crambidae) for Dispersal Studies

Rubidium Chloride and Cesium Chloride Sprayed on Maize Plants and Evaluated for MarkingDiatraea grandiosella(Lepidoptera: Crambidae) in Mark–Recapture Dispersal Studies

“…Similar results also were recorded for southwestern corn borer feeding on meridic diets containing Rb and Cs (Qureshi et al 2004). One application of 1000 g/g RbCl or CsCl on greenhouse maize plants (133 ml per plant) or Þeld maize (85 ml per plant) effectively marked southwestern corn borer that developed on the plants.…”

“…However, males may have been unmated or may not pass on as much Cs in their ejaculate. However, females that developed in the laboratory on meridic diet containing Cs had almost double the Cs concentration that males had, even though the females had also deposited their eggs (Qureshi et al 2004). Both Rb and Cs have been reported in feral populations and horizontal (mating) and vertical (oviposition) transmission has been demonstrated in other insects (Jost and Pitre 2002).…”

Rubidium marking of Aphidius rhopalosiphi (Hymenoptera: Braconidae) on Sitobion avenae (Hemiptera: Aphididae) reared on a diet supplemented with RbCl

“…Radioactive-isotope marking has a reduced applicability due to environmental concerns. Alternatively to the radioisotope technique, rare or trace elements are more increasingly used as markers (Fernandes et al, 1997;Qureshi et al, 2004) and are among the few ones usable for small insects such as parasitoids (Hagler & Jackson, 2001). Berry et al (1972) were the first to propose rubidium (Rb) as a useful element for marking.…”