26 августа исполняется 70 лет со дня рождения известного украинского советского зоолога, доктора биологических наук, профессора Александра Богдановича Кистяковского.

Tracheliastes maculatus Kollar, 1836 a pathogenic parasite of Abramis brama of the elder age was found in A. brama from the Krasnooskolian and Pechenegian water storage reservoirs (the Kharkov Region). Dynamics of A. brama ...

The problem on the possible mechanisms of gonads transition to a refractory phase in birds after the reproduction is discussed on the basis of the literature data and results of the authors' own investigations. The season ...

Infestation of the two-year carps and common carp-carp hybrids with Sphaerospora carassii and the helminths - Dactylogyrus extensus, Khawia sinensis, Bothriocephalus gowkongensis evokes changes in the morphological composition ...

The monotypical genera are described: Bobocris gen. n. with type-species B. roseolus sp. n., Monocris gen. n. with type-species M. griseus sp. n., Lopidodenus gen. n. with type-species L. ogivus sp. n. and Macrotylus ...

In the statistical processing of data on 13 mophological characters of Aglenchus agricola essential differences are found between geographically separated populations in the body total length, the body length from the ...

In 1960-1968 more than 100 species of nesting, flying away, wintering and spo radic birds were registered in the settlements of the Transcarpathian lowland. In all the seasons of a year birds density in towns remains high. ...

The cytological composition of the auditory centres of the inferior colliculi of corpora quadrigemina and internal geniculate bodies was studied in healthy rabbits. Three main types of nerve cells are established on the ...

A new in principle idea of the essence of the horse rest in a standing position is arisen from the study of 3 clinically sound draught-horses by the methods of mechano- and electromyography. It is shown that each 1-27 min. ...