NATURAL SCIENCES

Journal of fundamental
and
applied researches

Inversion sex australian cancer due to the shift on the types of temperature optimum

2015. №3, pp. 103-108

Kryuchkov Viktor N. - D.Sc. (Biology), Professor, Astrakhan State Technical University, 16 Tatishcheva Str., Astrakhan, 414025, Russian Federation, 16. kvn394@rambler.ru

Melnik Irina V. - Ph.D. (Biology), Associate Professor, Astrakhan State Technical University, 16 Tatishcheva Str., Astrakhan, 414025, Russian Federation, irina_1melnik@mail.ru

Vasileva Ekaterina G. - Ph.D. (Biology), Associate Professor, Astrakhan State Technical University, 16 Tatishcheva Str., Astrakhan, 414025, Russian Federation, katerina.84@mail.ru

The polls were conducted to identify improving the cultivation technology of freshwater crustaceans. The experiments have been aimed at assess of changes in the rate of growth in dependence on gender of Australian crayfish ( Cherax quadricarinatus ). It identified overall tendency of increasing the analysed growth indictors of males relative to females. This proves the prospect of using same-sex populations of species under cultivation. In the course of research also was shown the possibility of individuals transsexualism adjusted with the temperature regime.The maximum number of males observed in groups where the temperature regime is different from optimal in the decrease or increase.

Key words: аквакультура, ракообразные, инверсия пола, температурная коррекция, скорость роста, однополая популяция, aquaculture, crustaceans, sex inversion, temperature correction, growth rate, monosex population