Wolbachia is a maternally transmitted intracellular symbiont which causes reproductive distortions in the arthropods it infects. In recent years there has been an increasing interest in using Wolbachia as a potential tool for biological control by genetic manipulation of insect pests. In the present paper we report Wolbachia infection in several Trissolcus wasps (Hymenoptera: Scelionidae) which are important egg parasitoids of the sunn pest, Eurygaster integriceps Puton (Heteroptera: Scutellaridae). We used DNA sequence data for a gene encoding a surface protein of Wolbachia (wsp) not only to confirm Wolbachia infection but also to discriminate Wolbachia strains. Phylogenetic analyses indicated that Wolbachia strains in Trissolcus species were closely related to one another and belonged to supergroup B. Determination of the infection status of various populations, the possible role of Wolbachia in causing the incompatibility and knowledge of the reproductive compatibility of Trissolcus populations is important for the success of parasitoids in sunn pest management., Nurper Guz ... [et al.]., and Obsahuje seznam literatury
Boj o záchranu jednoho z nejvzácnějších a nejunikátnějších ptačích druhů - Kakapa sovího (Strigops habroptilus) - trvá už několik desítek let. Veškeré snahy dlouhou dobu selhávaly, než vědci odhalili, jak úzce záhadné rozmnožování tohoto druhu souvisí s jeho výživou. Od roku 2000 se tak podařilo populaci více než zdvojnásobit. Za zachráněný však druh bude považován až ve chvíli, kdy dokáže přežít a rozmnožovat se bez pomoci člověka. Záchrana kakapa sovího je běh na dlouhou trať, čím víc ale o jeho biologii víme, tím větší máme naději, že se to podaří., The endeavour to save one of the rarest and most unique species of birds - Kakapo (Strigops habroptilus) - has been going on for decades. All efforts were unsuccessful until the scientists discovered how closely is the reproduction of this species related to its diet. Since the year of 2000 the population has doubled its original. However, the recovery of Kakapo populations is a long process, the species can only be considered salvaged when it is able to reproduce without human assistance., and Petra Tumová.