Laboratories \ Laboratory for Ecology of Lower Vertebrates \ Goals and Tasks . Goals and Tasks . ... Ecology of organisms and communities . ... Geographic variation of morphological features, species structure, distribution, peculiarities of growth, feeding, spawning and population structure of Siberian sturgeon were studied within its natural range. ... Long-term dynamics of teratogenesis in the young acipenserids, bred in the Volga fish-hatcheries, was analyzed. ...