Ruchin A.B.
THE PLASTIC INDICATIONS OF ALBURNOIDES (TELEOSTEI: CYPRINIDAE) FROM VARIOUS PARTS OF THE AREA ^{[№ 10 ' 2013]}
The plastic indications of Alburnoides which are made by one operator are studied. On some of them reliable distinctions of four species of a sort (Alburnoides bipunctatus, A. rossicus, A. kubanicus, A. fasciatus) were observed. The Riffle minnow from a of Zapadnaya Dvina river basin is carried by us to the Russian Riffle minnow.

Ruchin A.B.
INFLUENCE OF THE PHOTOPERIOD ON THE LARVAL DEVELOPMENT AND GROWTH OF THE AMPHIBIANS ^{[№ 6 ' 2013]}
Experiments on studying of influence of the photoperiod on development and growth of the amphibians are made. It appeared that the constant darkness in comparison with the constant lighting reduces growth and rates of development and increases mortality of Rana temporaria tadpoles. However growth of Xenopus laevis fingerlings a didn't change depending on the photoperiod.