We investigated the influence of female reply duration on male mate-searching effort in the leafhopper Aphrodes makarovi in which the female reply is essential for successful location of the female. In a duet, the beginning of a female reply overlaps the end of the male call and males evaluate only the nonoverlapped duration of the female reply. In playback experiments we varied the duration of female replies within the natural range. The duration of a female reply was negatively correlated with the male calling effort. By increasing her reply duration a female may significantly reduce the male's direct and indirect costs associated with signalling and searching, thus, ultimately, affecting male reproductive success. Males showed high adaptability in signalling behaviour and when female replies were short, searching males shortened the last section of their advertisement calls. This strategy allows the nonoverlapped part of the female reply to be longer irrespective of its overall duration. Despite its deceptively simple form, vibrational duetting may entail more complex interactions than just temporal coordination.
COBISS.SI-ID: 3801679
In this account distribution data of 178 species of plant-and leafhoppers occurring in Slovenia are recorded; 81 of them are new to the fauna of Slovenia. Some rare and taxonomically and/or zoogeographically critical species like Hyalesthes scottii, Conomelus sagittifer, Delphacodes mulsanti, Delphax meridionalis, Pastiroma clypeata, Dicranotropis hamata group, Hespericerus brusinae, Stegelytra putoni, the genus Aphrodes, Anoscopus albiger, A. albifrons and A. flavostriatus complexes, Notus italicus, the genus Chlorita and many others are discussed. The distribution range and the demarcation line between the cis-and transalpine sibling species of the genus Forcipata in Slovenia is presented here more in detail. With this account the number of plant-and leafhopper species known for Slovenia has increased to 555 species.
COBISS.SI-ID: 1697525
In the last twenty years, stone fruit production in Slovenia has considerably decreased. Acreage with peaches and nectarines has been significantly reduced. Orchard renewal has decreased for various reasons; among them, the frequent occurrence of various diseases is the most significant. These diseases make the economic feasibility of stone fruit production difficult if not impossible. This review addresses the most important stone fruit diseases in Slovenia: European stone fruit yellows, sharka, bacterial leaf spot, bacterioses caused by Pseudomonas spp., perennial canker, and Fusicoccum canker. Additionally, this review focuses on the possibilities of reducing the damage caused by these diseases.
COBISS.SI-ID: 8413049