We examined the mesostigmatid mites found in four nest chambers of the dung beetle Copris lunaris (Scarabaeidae) in Slovakia. A total of 763 mites was found, belonging to ten species. The most frequent and abundant species were Pelethiphis opacus, Macrocheles copridis, Parasitus copridis, Uropoda copridis, Copriphis pterophilus, and Onchodellus hispani. The nests contained 19 dung balls, each enclosing a beetle pupa. Altogether 472 mites were found in these brood balls. A further 291 mites were found on the parental beetles in the nests. Three mite species were clearly more abundant in brood balls than on parental beetles, and these belonged to the life cycle stage that disperses by phoresy. The mites found in brood balls apparently disperse on the young adult beetles when they emerge. Only Parasitus copridis was more abundant on parental beetles than in brood balls. Different species of mites have developed different strategies for dispersal, as shown by their preferential attachment to either the parental or progeny generations of beetles.
Veľmi často, aj keď nie každý deň, možnost stretnúť vysokého, štíhleho muža vchádzať do budovy chemických ústavov v areáli SAV v Bratislave na Patrónke, v ktorej sídli aj Fyzikálny ústav SAV. Je to doc. RNDr. Mikuláš Blažek, DrSc. Nebyť jeho bielych vlasov a trochu zhrbeného držania tela, sotva by ste mu hádali 75 rokov, ktorých sa dožil 21. 11. 2007. Už nemá pracovný úväzok, ale kontakt s ústavom neprerušil. Pri tej príležitosti mu pracovníci Fyzikálneho ústavu SAV Dalibor Krupa, tajomník Slovenskej fyzikálnej spoločnosti, a Štefan Lányi, položili niekoľko otázok., Dalibor Krupa, Štefan Lányi., and Obsahuje Vybrané práce M. Blažeka
Populations of the Minuartia verna group (sect. Polymechana Mattf.) from the Západne, Vysoké and Belianske Tatry Mts (W Carpathians) and from the Svidovec and Čorna Hora Mts (Ukrainian E Carpathians) are classified as a separate species Minuartia pauciflora (Kit. ex Kanitz) Dvořáková; the appropriate nomenclatural correction is proposed. Comments on speciation, taxonomic relationships, chromosome counts, distribution and plant sociology are given. A brief morphological comparison with M. rubella (Wahlenb.) Hiern (arctic zone of Holoarctis), M. gerardii (Willd.) Hayek (Alps and Pyrenees) and M. corcontica Dvořáková (Krkonoše Mts, N Czech Republic) is presented.