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We experimentally investigated proximate factors in uencing the visual detection of  ying conspeciŽ cs by male butter ies (Asterocampa leilia) engaged in a sit-and-wait matesearching tactic. Model butter ies were presented to perched males in the Ž eld using an apparatus that permitted us to control the path and speed of a model while varying minimum(More)
It is well known that different oxovanadium species can have significantly different biopotencies, including hypoglycemic actions. The basis for the observed differences in the biopotency of different oxovanadium species: vanadate, vanadyl, 1,10-phenanthroline bisperoxovanadate (phen-bpv), 4-methyl 1,10-phenanthroline bisperoxovanadate (mpv) and(More)
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