Biologie dekompozitorů byla vždy tak trochu na druhé koleji širšího vědeckého i veřejného zájmu. Není se trochu čemu divit – než se přehrabovat v něčem nevábném, je pohodlnější pozorovat zvířata na rostlinách či jejich predátory. Nicméně dekompozitoři si naši pozornost zaslouží už jen tím, že po nás uklízejí, ať jde o kontinuální úklid koprofágů, tak o jednorázový úklid, který po nás provedou nekrofágové, a tím pomáhají udržovat to krásné a přitažlivé v chodu a stabilitě. Z koprofágů se již od věků pyramid těší jisté pozornosti koprofágní brouci, nicméně za poslední léta o nich v naší literatuře mnoho slyšet nebylo. Cílem tohoto článku je tedy představit širší veřejnosti tyto koprofágní brouky s jejich osobitou a zajímavou ekologií, která zajímavě ovlivnila jednu lidskou kulturou., Dung beetles are introduced as an important and interesting ecological group. Their ecology, what they eat and their impact on human culture and society are reviewed. Although they are no longer considered to be a deity, dung beetles still prove to be highly beneficial for both nature and human society, thanks to their degradation of dung., and František Xaver Jiří Sládeček.
Čeleď brukvovitých patří k největším rostlinným čeledím; zahrnuje 49 tribů, 321 rodů a 3 660 druhů. Zájem vědců o tuto rostlinnou skupinu vzrostl především díky ustanovení huseníčku rolního (Arabidopsis thaliana) modelovým druhem a sekvenování jeho genomu. To v r. 2000 odstartovalo mimo jiné bouřlivý rozvoj srovnávací fylogenomiky a cytogenomiky, včetně úspěšného zavedení metody malování chromozomů (chromosome painting) huseníčku a její aplikace na další zástupce brukvovitých (srovnávací malování chromozomů; comparative chromosome painting, CCP). Metoda CCP umožňuje studium chromozomové kolinearity, rozpoznání chromozomových přestaveb, porovnání struktury chromosomů nebo jejich částí mezi jednotlivými druhy a rekonstrukci struktury celých karyotypů. Brukvovité jsou jedinou rostlinnou čeledí, u níž je v tomto rozsahu metoda CCP použitelná. Srovnávací cytogenetické mapy brukvovitých tak představují zcela unikátní typ dat o evoluci rostlinných karyotypů a genomů., Whole-genome sequencing of the model plant Arabidopsis thaliana has stimulated a rapid development of comparative phylogenomics and cytogenomics, including the invention of chromosome painting in A. thaliana and comparative chromosome painting (CCP) in other species of the Brassicaceae (Cruciferae) family. This is the only plant family in which large-scale CCP is feasible. CCP provides unique insights into the karyotype and genome evolution in plants by comparing chromosome collinearity, identification of chromosome rearrangements, construction of comparative cytogenetic maps, and reconstruction of ancestral karyotype structures., and Terezie Mandáková.
Příspěvek Petry Kolátorové je věnován mezinárodní muzikologické konferenci, která se uskutečnila v německém Bonnu ve dnech 27. až 29. srpna 2012., Petra Kolátorová., Rubrika: Konference, and Cizojazyčné resumé není.
The 700th birth anniversary of King of Bohemia and Holy Roman Emperor Charles IV has been designated as one of UNESCO´s important world anniversaries for 2016-2017. The Czech Academy of Sciences recreates the period of Charles IV at the exhibiton entitled Seven Towers. Charles IV through the eyes of academics (1316-2016) at the Science and Art Gallery. The visitors have an oppportunity to see the unique gold ducats with a picture of Charles IV. For this first time the most valuable archaeological discoveries of glass goblets are exhibited. Everyday items used by residents of the medieval city are also on display. The exhibition also shows a rare treasure of coins, which was hidden in the Emmaus monastery about 1370, as well as copies of the Constitutive Act of the Charles University, Charles´s Code Maiestas Carolina or late-medieval transcript of Charles´ Golden Bull. Personality of Charles IV is documented by commemorative coins, medals and seals bearing his image. Part of the exhibition is also a faithful copy of the statue of Charles IV from the Old Town Bridge Tower, the last sculptural portrait of the monarch before his death. and Marina Hužvárová.
The multicoloured Asian ladybird Harmonia axyridis is an invasive insect that can negatively influence biodiversity and human economy in invaded areas. According to the enemy release hypothesis, invasive alien species are often little affected by parasites and other enemies. We studied the prevalence of common parasites of insects infesting and infecting H. axyridis in NW Poland. A large sample of 2351 individuals was collected and divided into two groups: 1180 beetles were dissected and examined for the presence of eugregarines, nematodes and Laboulbeniales fungi, and 751 were checked for phoretic mites. Our results show that H. axyridis is indeed parasitized infrequently. The prevalence of eugregarines and nematodes was very low (1.5% and 0.4%, respectively). No specimens of Laboulbeniales or phoretic mites were found. Our study indicates that in NW Poland H. axyridis is rarely infested or infected by parasites. This paper reports for the first time the infection of H. axyridis by the eugregarine Gregarina barbarara., Kryzstof Dudek, Paweł Sienkiewicz, Dariusz J. Gwiazdowicz, Piotr Tryjanowski., and Obsahuje bibliografii
Twenty eight species of winter-active Heleomyzidae were collected during a long-term study in Poland. More than 130 samples of insects, including Heleomyzidae, were collected from the surface of snow in lowland and mountain areas using a semi-quantitative method. Lowland and mountain assemblages of Heleomyzidae recorded on snow were quite different. Heleomyza modesta (Meigen, 1835) and Scoliocentra (Leriola) brachypterna (Loew, 1873) dominated in the mountains, Tephrochlamys rufiventris (Meigen, 1830) mainly in the lowlands and Heteromyza rotundicornis (Zetterstedt, 1846) was common in both habitats. Heleomyzidae were found on snow during the whole period of snow cover, but the catches peaked from late November to the beginning of February. In late winter and early spring the occurrence of heleomyzids on snow decreased. Most individuals were active on snow at air temperatures between -2 and +2.5°C. A checklist of 78 winter active European Heleomyzidae is presented. Helomyza nivalis Wahlgren, 1918 is herein considered as a new junior synonym of Helomyza caesia Meigen, 1830, syn. n., Agnieszka Soszyńska-Maj, Andrzej J. Woźnica., and Obsahuje bibliografii
The Northern pine processionary moth, Thaumetopoea pinivora (Treitschke, 1834) shows a highly scattered distribution with fragmented populations across Europe. A previous study exploring the postglacial history of T. pinivora defined it as a cold-tolerant relict species and concluded that a progressive reduction of suitable habitats after the postglacial expansion from refugia in the southern Iberian peninsula best explained the distribution and genetic structure of populations of this species. However, recent records, both by us and others, challenge this view. Surprisingly, some of the newly found populations from southern Spain use black pine, Pinus nigra J.F. Arnold as a host plant despite the fact that the typical host of the species, Scots pine, Pinus sylvestris L. occurs in the area. We provide genetic data for one of these recently found southern populations where the larvae feed on P. nigra, and compare this with previously published data on individuals collected on P. sylvestris. This data reveals that populations from different host trees are no more genetically differentiated than populations sharing the same host plant. The findings of a wider diet breadth open the way to widen the search for the still unidentified glacial refugium of T. pinivora, and as such may contribute to a better understanding about how the species has spread across Europe., José A. Hódar, Anna Cassel-Lundhagen, Andrea Battisti, Stig Larsson., and Obsahuje bibliografii