Polymorphism in warning coloration is puzzling because positive frequency-dependent selection by predators is expected to promote monomorphic warning signals in defended prey. We studied predation on the warning-coloured wood tiger moth (Parasemia plantaginis) by using artificial prey resembling white and yellow male colour morphs in five separate populations with different naturally occurring ...

ABSTRACT A series of laboratory tests were conducted to investigate potential effects of fungus gnat (Bradysia impatiens) feeding damage on susceptibility of geranium seedlings (Pelargonium x hortorum) to infection by the root rot pathogen Pythium aphanidermatum. Effects were compared with those from similar tests in which the seedlings were mechanically wounded by severing the root tip with a ...

Eosin Y has an extraordinary capacity to form complexes with metallic elements, that have applications in many different fields, from photovoltaics and photocatalysis historical artists’ pigments. To unravel the reactivity, it is essential a precise knowledge of their structure composition, as well how these can be affected by synthesis protocol, often underestimated factor. This manuscript pre...

Some of the aromatic 'essential' oils used in aromatherapy do have well-documented therapeutic actions. However, many of the oils for which aromatherapists claim physiological medical activity, in fact possess no recorded historical medicinal actions. Oils such as: Moroccan chamomile, Citronella, Clary sage, Geranium, Rosewood, Vetiver and Ylang were originally produced solely for the perfumery...

In this contribution to the mycoflora of Karaj, notes are given on 28 species of micromycetes (Peronosporales, Erysiphales, Dothideales, Leotiales, Ustilaginales and mitosporic fungi) mainly collected by the authors in various parts of Karaj area. Six species are new records for Iran viz. Ramularia geranii var. geranii on Geranium pyrenaicum, Septoria gallica on Colchicum robustum, Sphaerotheca...