Web-Based System for Register of Journeys

Tato práce pojednává o tvorbě on-line aplikace kniha jízd, pro správu jízd na internetu. Popisuje návrh aplikace a prostředky použité při její tvorbě, dále se zabývá zajímavými problémy, které musely být při implementaci řešeny. V závěru pak nastiňuje možnosti dalšího rozšíření.This project presents the creation of on-line application register of company travels, for the administration of these travels on the Internet. It describes design of the applications and devices used in its formation, dealing with interesting problems that need to be resolved in the implementation. In conclusion, it outlines the possibility of further extension.

Fifty Shades of the Harlequin Ladybird and a Sexually Transmitted Fungus.

The ectoparasitic fungus Hesperomyces virescens was studied on its invasive host, the harlequin ladybird Harmonia axyridis, in the Czech Republic. A primary aim was to examine the relationship between fungal infection and elytral coloration of the ladybird. Furthermore, the role of host sex and mating status of females were analyzed. Beetles (n = 1,102) were sampled during autumn migration, and then sexed, weighed, and screened for infection. Females were dissected for detection of sperm in their spermathecae. Ladybirds were sorted according to color form and absorbance spectrophotometry was used to quantify carotenoid contents in their elytra. In individuals of the nonmelanic succinea form, the degree of melanization was measured using digital photographs and putative age groups were estimated based on background color of elytra. Sexual differences in infection patterns indicated transmission during copulation: males were infected mostly on elytra and venter, and females had infection almost exclusively on elytra. Mated females had higher infection rate than virgins. There was no influence of genetic color form on the fungal infection. Putative age groups (visual sorting to yellow, orange, and red) correlated with fungal infection. Infected individuals had elevated elytral carotenoid levels in comparison to uninfected individuals, which could be explained by host age. Infection-free succinea beetles were extensively melanized because they emerged later in the season at lower temperatures which induced melanization. Overall, we highlight that H. axyridis is a multivoltine species whose age, if not taken into account in ecophysiological studies, might present a considerable confounding factor

The influence of weather on frequency of suicide in Czech population

This study deals with suicide seasonality and the influence of meteorological and climatological factors on suicide rates in different countries and in the Czech Republic. The results of various statistical methods sometimes indicate statistically significant relationship between meteorological and climatologic factors and suicidality. In the Czech Republic, based on available data for the period from 1. 1. 2002 to 31. 12. 2009, true that increasing the temperature increases in the number of suicides. He went therefore statistically significant positive relationship between average daily temperature and the number of suicides. Further worked, that is about 5% more suicides at average daily temperatures above 18 řC. Also, the average temperature change from day to day has an effect on suicide. Along the linear regression is statistically significantly more suicides when the average temperature change from day to day by more than 2 řC. Furthermore, based on the ratio of the annual running anticyclone and cyclone, it was assumed that the suicide rate is higher during anticyclonic weather type. Linear regression test or 2-square test (chi-square), however, did not confirm anything like that, just as confirmed by the relationship between the duration of sunshine and suicidality in the Czech Republic

Influence of meteorological factors on mortality in the Czech Republic

Department of Physical Geography and GeoecologyKatedra fyzické geografie a geoekologieFaculty of SciencePřírodovědecká fakult

Parasites of Harmonia axyridis: current research and perspectives

Harmonia axyridis (Coleoptera: Coccinellidae) has been introduced widely for biological control of agricultural pests. Harmonia axyridis has established in four continents outside of its native range in Asia and it is considered an invasive alien species (IAS). Despite a large body of work on invasion ecology, establishment mechanisms of IAS and their interactions with natural enemies remain open questions. Parasites, defined as multicellular organisms that do not directly kill the host, could potentially play an important role in regulating host populations. This study presents a review of the parasites of H. axyridis, discussing their distributions and effects on host populations across the host’s native and invasive range. These parasites are: Hesperomyces virescens Thaxt. fungi, Coccipolipus hippodamiae (McDaniel and Morrill) mites, and Parasitylenchus bifurcatus Poinar and Steenberg nematodes