Friends, Has anybody of our group an information about the effect of UV irradiation on nectar secretion? Are there any references. Thanks in advance. Vladimir Ptacek ---------------------------------------------------------------- Fac. Sci., Dept. Anim. Physiol. E.mail: [log in to unmask] Masaryk University phone: .42/5/41129 562 611 37 Brno, Czech Republic fax: .42/5/41211 214