Motor activity of the silkworm (Bombyx mori L.) as a factor of synchronization of population development

Natural silk was and remains the most elite and luxurious material. Silk is made from cocoons of the silkworm (Bombyx mori L.). The silkworm is part of the Holometabola group (insects with complete transformation). This means that the silkworm goes through several stages of development: egg, larva with four molts, pupa, butterfly. Each stage, depending on the breed and conditions of maintenance, is characterized by a certain duration and the so-called amity of development. In Uzbekistan, it is customary to carry out one feeding per year, timed to the beginning of the mulberry vegetation, therefore, tens of billions of caterpillars are simultaneously subjected to reproduction for 28–30 days. Changing the duration of any of the stages of development of the silkworm leads to destabilization of the feeding process and, as a result, to large material losses. Selection by motor activity, which implies the selection of the most active, and therefore the most viable individuals, leads to an acceleration of the metabоlism of the silkworm, synchronizes the development of a huge number of organisms at all stages of development, allows to coordinate with accuracy up to 1 day the work of all departments of the silk industry, accurately calculate time, human resources, the use of technical means and monetary costs for each stage and the entire cycle of reproduction of the silkworm.

1. Larkina E.A., Salikhova K., Yakubov A.B. Using the method of selection by motor activity to preserve the properties of collection silkworm breeds. Agroilm. 2012; 2(22): 51–53. (In Russ.)

2. Larkina E.A., Yakubov A.B. Creation of silkworm lines with various genetically determined behaviors. Sbornik statey. Actual problems of the silk industry and their scientific solutions based on new technologies. Tashkent. 2012: 30–34. (In Russ.)

3. Larkina E.A., Yakubov A.B., Daniyarov U. The results of studying the genetic nature of the motor activity of the silkworm. Uzbekskiy biologicheskiy jurnal. 2010; 5: 43–46. (In Russ.)

4. Kaidanov L.Z.et al. A study of the genetics of sexual behavior of Drasohila melanogaster. Message 1. Selection and genetic analysis of lines differing in sexual activity. Genetics. 1969; 9(5): 116–118. (In Russ.)

5. Pole I.R., Kaidanov L.Z. Genetic analysis of male sexual activity in the line of Drasohila melanogaster. Genetics. 1978; 3(14): 470–475. (In Russ.)

6. Larkina E.A., Yakubov A.B. The use of parthenogenetic clones to determine the relationship of locomotor activity of the imago silkworm with signs of productivity. Sbornik statey. Actual problems of the silk industry and their scientific solutions based on new technologies. Tashkent, 2012: 41–45. (In Russ.)

7. Luchnikova E.N. Genetics of behavior. Nauka. Leningrad. 1969: 10–15. (In Russ.)

8. Lobashev M.E. Research on genetics I. Sbornik statey. Leningrad. 1961: 1–11. (In Russ.)

9. Nasirillaev U.N., Lezhenko S.S. The main methodological provisions of breeding work with silkworms (rukovodyashiy dokument). Tashkent, 2002: 3–20. (In Russ.)

10. Merkuryeva B.K. Biometrics in breeding and genetics of farm animals. Moscow. 1970: 141–144. (In Russ.)

11. Larkina E.A., Yakubov A.B. Creation of inbred lines with selection for increased and decreased viability of silkworm caterpillars. Uzbekskiy biologicheskiy jurnal. 2010: 6; 45–49. (In Russ.)