Article 12119

Title of the article



Nemyko Elena Aleksandrovna, Engineer, sub-department of zoology, Russian State Agrarian University – MTAA (49 Timiryazevskaya street, Moscow, Russia), E-mail:
Kidov Artem Aleksandrovich, Candidate of biological sciences, associate professor, sub-department of zoology, Russian State Agrarian University – MTAA (49 Timiryazevskaya street, Moscow, Russia), E-mail:
Vyatkin Yaroslav Aleksandrovich, Student, Russian State Agrarian University – MTAA (49 Timiryazevskaya street, Moscow, Russia), E-mail:

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Background. The Lantz’s newt, or Caucasian smooth newt, Lissotriton lantzi (Wolterstorff, 1914) – endemic of forest belt in the Caucasus, included in the Red Data Books of Russia and Azerbaijan. One of the actual methods of conservation of this species is laboratory reproduction and introduction into new ponds within the native area. The study of optimal conditions of growing of the Caucasian smooth newt is relevant work. The research aim is to describe the characteristics the growth, survival and cost of feeding at the cultivation of larvae of the Lantz’s newt in zooculture.
Materials and methods. Larvae of newt after the start of exogenous feeding were transplanted into plastic containers with a volume of 3 liters. The animals were grown in groups at a density of 1, 2, 3, 4 and 5 larvae per liter of water. Newts in first 20–26 days were feeding live nauplius of Artemia salina. At 21–27 days in the diet started to add the larvae of chironomids (bloodworms). A mixed diet of bloodworms and Artemia was carried out with 21–27 by 26–35 day. On 27–36 day began to offer for newts the only bloodworms. The following indicators were taken into account: minimum, average and maximum duration of larval development, size and weight of newts after leaving the water, survival in the period of growing, feed costs for 1 g of weight gain and for growing of one newt to metamorphosis.
Results. The newts grown at a minimum density (1 specimen per liter of water) were characterized by higher minimum development duration. Also animals from this group had the big sizes at the first newts leaving water. Larvae grown at different densities (2, 3, 4 and 5 specimens per liter of water) did not differ statistically in all analyzed parameters.
Conclusions. Probably, the obtained results are explained by high individual variability of growth and development in newt larvae. In each group were marked specimens with smaller sizes leaving the water before the other larvae. Also in groups there are always larvae with longer larval development and larger sizes at metamorphosis. The authors believe that this phenomenon has a genetic determination and doesn’t depend on the density of larvae. 

Key words

the Lantz’s newt, the Caucasian smooth newt, Lissotriton lantzi, growth, development, survival, density, zooculture 


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Дата создания: 18.07.2019 13:21
Дата обновления: 19.07.2019 11:58