caa a22 4500 397571143 CHVBK 20180308164841.0 cr unu---uuuuu 161202e19961001xx s 000 0 eng 10.1093/ee/25.5.906 doi (NATIONALLICENCE)oxford-10.1093/ee/25.5.906 Assimilation of Rubidium by Melanoplus Grasshoppers (Orthoptera: Acrididae) [Elektronische Daten] [Stephen A. Woods, Douglas A. Streett] A series of assays were set up to evaluate several parameters affecting rubidium assimilation, excretion and effects on migratory grasshopper, Melanoplus sanguinipes (F.), development following ingestion of RbCl. Dosages of RbCl as high as 3.82 mg were found to elevate tissue concentrations of Rb as much as 4,900 ppm above background levels at 2 d after ingestion. The rate of ingestion was essentially linear, and excretion rates followed the behavior of a half-life model with a half-life of roughly 1 d. There were no differences between M. sanguinipes and M. packardii (Scudder) in the amount of Rb assimilated, however, subtle differences that were proportional to the weight of the grasshoppers were observed in the resulting tissue concentrations. Constant exposure to RbCl raised body concentrations of Rb to 2,000-5.000 ppm and caused a slight retardation in developmental rates. A single exposure to 121μg of RbCl caused tissue concentrations of Rb to rise to 140ppm at 2 d after ingestion, but had no effect on developmental rates. These assays provide the basic parameters necessary for designing field studies in which RbCl, formulated in a bait, can be used for grasshopper dispersal and feeding studies. © 1996 Entomological Society of America Pest Management and Sampling nationallicence grasshopper nationallicence rubidium chloride nationallicence insect-marking nationallicence insect-dispersal nationallicence Woods Stephen A. USDA-ARS Rangeland Insect Laboratory, Montana State University, Bozeman, MT 59717 aut Streett Douglas A. USDA-ARS Rangeland Insect Laboratory, Montana State University, Bozeman, MT 59717 aut Environmental Entomology Oxford University Press 25/5(1996-10-01), 906-911 0046-225X 25:5<906 1996 25 ee https://doi.org/10.1093/ee/25.5.906 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.5.906 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Woods Stephen A. USDA-ARS Rangeland Insect Laboratory, Montana State University, Bozeman, MT 59717 aut NATIONALLICENCE 700 1- Streett Douglas A. USDA-ARS Rangeland Insect Laboratory, Montana State University, Bozeman, MT 59717 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/5(1996-10-01), 906-911 0046-225X 25:5<906 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford