[Development of monogeneans from the family Tetraonchidae under experimental conditions].

Experimental data on the development of the Tetraonchus borealis larvae and species of the genus Salmonchus are given for the first time. The experiments was carried out in field conditions, in the estuary of the Shegnanda river (Baikal Lake basin), during 25 days. It was established that temperatures from 15 to 22 degrees C are favorable for the culture of the Salmonchus eggs followed by the emergence of larvae at eighth or ninth day. At the same time, T. borealis larvae need in lower temperatures, from 15 to 17 degrees C for their development. Detailed descriptions of eggs and larvae of the Tetraonchidae species under are given.