Study of the stages of embryonic development of eggs of Ganguleterakis dispar (Schrank, 1790) in soil

Abstract

In order to study the stages of embryonic development of ganguleterakis eggs in different types of soils, 2 types of soil (mountain forest brown and gray - brown) were taken and the obtained helminth eggs were buried in these soils. On mountain forest brown soils, the division phase ended on the 12th day, the blastula phase on the 29th day, the larval formation phase ended on the 36th day, and on gray-brown soils, the division phase ended on the 14th day, the blastula phase ended on the 32nd day, and the larval formation phase ended on the 42nd day. Thus, under in vitro conditions, the embryonic development of Ganguleterakis dispar eggs in water was completed in 7 days at a temperature of 24°C, in various types of soils: in typical mountain–forest brown soil-in 36 days, in gray-brown soil-in 42 days, during which time larvae fully developed inside the eggs.