Polarization sensitivity provides animals with information not available in the intensity or spectral domains. We examined the polarotaxis reactions in the epiplanktonic copepod Pontella karachiensis. Polarotaxis reactions were intensity dependent. At intensities corresponding to ambient daylight, P. karachiensis showed an attraction to a polarized light field; while at low intensities, corresp...

The aim of this study is determining the different patterns of egg nests and the morphological differences between the specimens of Cicadatra persica Kirkalidy, 1909 (Hemiptera: Cicadidae) distributed in fruit orchards in Erneh located on AL-Sheikh mountain south west of Syria. The appearance of 80 egg nests was studied, and the results showed that there were two basic patterns of egg nests lai...

Bu çalışmada 2018–2019 yıllarında Kırşehir İl'inden toplanan yirmi beş adet Auchenorrhyncha (Hemiptera) örneği değerlendirilmiştir. Teşhisler sonucu Selenocephalus pallidus Kirschbaum, 1868 (Cicadellidae Latreille, 1825), Cicadatra platyptera Fieber, 1876 (Cicadidae 1802), Callodictya krueperi (Fieber, 1876) (Dictyopharidae Spinola, 1839) ve Stictocephala bisonia Kopp & Yonke, 1977 (Membrac...

This article presents the results of study apple’s homoptera pests in forest communities Fergana Valley, biological features, harmfulness, features development phases, specific composition most harmful species, food relations, their natural enemies and recommended measures to control them. Species that are a component entomocenoses cultural landscapes negative impact on have been established. I...

Female cicadas use sound when they select a mate from a chorus of singing males. The cicada has a tympanal ear; and the tympanal membrane, and constituent tympanal ridge, act as both acousto-mechanical transducers and frequency filters. The tympanal ridge is physically connected to a large number of mechanoreceptor neurons via a cuticular extension known as the tympanal apodeme. Using microscan...

In cicadas, the tympanum is anatomically intricate and employs complex vibrations as a mechanism for auditory frequency analysis. Using microscanning laser Doppler vibrometry, the tympanal mechanics of Cicada orni can be characterized in controlled acoustical conditions. The tympanum of C. orni moves following a simple drum-like motion, rather than the travelling wave found in a previous study ...