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Yolk is a source of nutrients for developing embryos and for early fish larval stages that lack the ability to feed actively. Thanks to abundant networks of capillaries, yolk sacs are responsible for larval respiration before the development of gills, and in some fish species they are also the site of primary hematopoiesis. Fish yolk sac shapes and sizes differ among species. Cold-water fish with...
The aim of the present study was to assess the genetic variability of whitefish (Coregonus lavaretus L.) from Lake Vistytis using microsatellite DNA markers. The genetic analysis indicated a high level of polymorphism at the investigated microsatellite loci with 78 alleles identified among four microsatellite markers. The average values of the He, Ho, and PIC parameters were 0.92, 0.85, and 0.89,...
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