A review of nine species the bee genus Epeolus Latreille, 1802 (Hymenoptera: Apidae, Nomadinae) currently known from Mongolia is given. Two new species, E. leleji sp. nov. and mongolicus are described. The following five newly recorded Mongolia: alpinus Friese, 1893, cruciger (Panzer, 1799), melectiformis Yasumatsu, 1938, nudiventris Bischoff, 1930, ruficornis Morawitz, 1875. lectotype designat...

This study evaluated the effects of fish farm wastewater from production hybrid sturgeon (Acipenser gueldenstaedtii Brandt × Acipenser baeri Brandt) on growth and quality parameters romaine lettuce (Lactuca sativa var. longifolium cv. “Elizium”). The tested combinations were wastewater, enriched with one three microbiological consortia, supplemented minerals. best plants obtained in combination...

Diversion (i.e. extraction) of water from rivers and estuaries can potentially affect native wildlife populations if operation is not carefully managed. For example, open, unmodified water diversions can act as a source of injury or mortality to resident or migratory fishes from entrainment and impingement, and can cause habitat degradation and fragmentation. Fish-protection devices, such as ex...

Exposure to chemical contaminants is often invoked to explain recruitment failures to populations of sturgeon worldwide, but there is little empirical evidence to support the idea that young sturgeon are sensitive at environmentally relevant concentrations. The authors used shortnose sturgeon (Acipenser brevirostum) and Atlantic sturgeon (Acipenser oxyrinchus) as models to investigate the sensi...

Acipenser dabryanus is listed as a Critical Endangered species in the IUCN Red List and the first class protected animals in China. Fortunately, A. dabryanus specimens are being successfully bred in captivity for conservation. However, for effective ex situ conservation, we should be aware of the genetic diversity and the degree of relatedness of the individuals selected for breeding. In this s...

No significant differences in macro- and micromorphology were found between the parasitic stolon and free-living polyps of Polypodium sp. obtained from infected eggs of the North American acipenseriform fish Polyodon spathula and corresponding developmental stages of Polypodium hydriforme Ussov, parasitic in the Volga sterlet (Acipenser ruthenus). Therefore, both the American and the European f...

Sturgeons (Acipenser schrenckii) are of high evolutionary, economic, and conservation value, and caviar isone of the most valuable animal food products in the world. The Illumina HiSeq2000 sequencing platform was used to construct testicular and ovarian transcriptomes to identify genes involved in reproduction and sex determination in A. schrenckii. A total of 122,381 and 114,527 unigenes were ...