Feeding habits shape infection levels by plerocercoids of the tapeworm in muscle of a sympatric pair of whitefish in an oligotrophic lake.

Lake Teletskoye (West Siberia, Russia) is inhabited by a sympatric pair of whitefish, with each member of the pair being characterized by different feeding habits. Coregonus lavaretus pidschian (Gmelin, 1789) is a large 'benthivorous' form, while C. l.

The effect of diet on the structure of gut bacterial community of sympatric pair of whitefishes (): one story more.

In the complex may be found lacustrine sympatric pairs, which serves as an intriguing model for studying different aspects of fish evolutionary biology. One such sympatric whitefish pair inhabits Teletskoye Lake (West Siberia, Russia) and includes a "large" form ( (Gmelin, 1789)) and a "small" form ( (Dulkeit, 1949)). has a narrow trophic specialization and feeds on zooplankton, whereas the diet of is based on benthic prey.

Unexpected endemism in the Daphnia longispina complex (Crustacea: Cladocera) in Southern Siberia.

The biological significance of regional cladoceran morphotypes in the montane regions of the central Palearctic remains poorly understood. In the Holarctic Daphnia longispina complex (Cladocera: Daphniidae), several variants, lineages and species have been proposed as endemic for Southern Siberia. Daphnia turbinata Sars, for example, named after its unusual head shape, is known only from Southern Siberia.

Contrasting phylogeographic patterns and demographic history in closely related species of Daphnia longispina group (Crustacea: Cladocera) with focus on North-Eastern Eurasia.

Species with large geographic distributions present a challenge for phylogeographic studies due to the logistic difficulties of obtaining adequate samples. Daphnia O.F.

[Genetic polymorphism, haplotype distribution, and phylogeny of Daphnia (Cladocera: Anomopoda) species from the water bodies of russia as inferred from the 16S mtDNA gene sequencing].

The data on the genetic polymorphism of the most widespread Daphnia species occupying different water bodies of Russia are presented. The phylogenetic relationships between the examined species were established, and the haplotype networks were constructed. A fragment of the 16S mitochondrial DNA gene was used as a genetic marker.