CEM. AciPENSERIDAE.-AciPENSER RUTHENüS. 
229 
tüme. CTepjiRü;i> Me^eTTb HKpy no3ace. 3 to aBaeme aaa pïiKH, TeKy- 
mefi cp. C'ÉBepa Ha iorB>, npeÆCTaBaaeTca cb> nepBaro B3raa;n;a CTpaH- 
hhm'l: ;n;aa Æpyrnxp. pBi6p> Moaœo no^M^THTt cbh3b HacTynaema 
nepio^a HKpoMeTama cp, BeceHHHMB. no^neMOMB» TeMnepaTypBi, y 
CTepjraÆH ace met 3aMlmaeMB. o6paTHoe; bp» BepxHnxp. nacTaxp. pfen, 
ryl BecHa HanHHaeTca paHBme, HKpoMeTame paHBme, a HHace, bp> 
6oal;e ioacHOH mapo-ri,— HepecTP. no3ace. 3 to aBaeme ÔBiao no- 
CTaBaeHO bp, CBa3b cp. pa3anBOMP.: bp. Boarfé CTepaa^B MeneTP. 
HKpy okojio BpeMeHH HaHBEicmaro pa3aHBa, HMeHHO Hanaao Hepe- 
CTa npnxo^HTca H'icKoaBKO paHBme BpeMeHH HaHBBicmaro ropn- 
30HTa bo^et, a, KaKE> h3bï;ctho, pa3aHBP> bp. Boarü HacTynaeTP, hIîmb. 
BHme no Tenemio, t^mp> paHBme. Bp> Chm6hpck^ MaKCHMaaBHBiH 
pa3aHBP, bp. cpe^HeMP> npnxoftHTea Ha 6—7 Man, a bp. CaMapü Ha 
10—12 Maa. Ho, KOHenHO, H3B^CTHyio poaB nrpaeTB. bp> onncBi- 
BaeMOMP. npoijeccfé h xennepaTypa: CTepaa^B MeneTB. npn TeMne- 
paxyp^ 10°—15° C *). Boirpocp. btotb., BnponeMB., Tpe6yeTP> ;n;aaB- 
H'ÉHmnxp> H3ca^OBaHiH. B. H. Mehchepb. (1. c., CTp. 76) comhIs- 
BaeTca ^aace, hto6bi npaBnao: ^-Imb. BBime no Tenemio, t£mp> 
CTepaa^B MeneTB. HKpy paH^e u , Bcer^a onpaB^EmaaocB; TaKP>, bp. 
1907 rojjy BHH3y bb> AxMarô h 3ojiotomp> HepecTP. OKomraaca kb. 
9 Maa, a BBepxy, bp. CaMap'Ê ohb. oacn^aaca He panie HHcaa 12-ro. 
O^Haao, 1907 ro^p» He aBaaeTca yô'isHTeaBHHMP, bp, ÆaHHOMB. cay- 
aa'É, TaKP» KaKP» BecHa 9Toro ro^a ônraa He^pyacHaa, nepeM'ÊHHaa, 
a Tanaa BecHa, no caoBaMP> B. II. Mehchepa^ OTpaacaeTca He6aa- 
ronpiaTHO Ha HKpoMeTaniH CTepaa^n: MaccoBaro HepecTa BOBce He 
Haôaio^aeTca, a CTepaa^B MeneTP. HKpy Bpa36po^;p>, caynaHHBiMH 
napaMH. 
KaKP> 6 h to hh ÔErao, bp> cpe^HeMPî HepécTB. CTepaajpi Ha 
Boar'l Meawy Ka3aHBio h I^apHii;EiHEiMP> npnxojçHTca Ha nepByio 
noaoBHHy Maa. 
ToaBKO hto onaoÆOTBopeHHaa HKpHHKa CTepaa^H HM^èeTP> bp. 
3aHHy 1.9—2.0 mm. 1 2 ). 
Bp> 3aBHCHMOCTH otb. TeMnepaTypBi, MaaBKH CTepaa^n BErayn- 
aaiOTca H3P> ann^» oÔBiKHOBeHHO Ha 6—9 ÆeHB no onao^OTBopemn, 
ho HHor,n;a (bp> HCKyccTBeHHHXP, ycaoBiaxp., HMeHHO bp. xoao^Hon 
1) H. A KysHEmmi» (B-écth. Pbi6., V, 1890, CTp. 258—254) h B. H. Meh- 
chepp» (Tp. Cap. 06m;. Ect., V, b. 3, 1908, CTp. 75—78) coohhu npu^aBaTB 
BaæHoe 3HaqeHie TeMnepaTyp r É. 
2) A. A. OcTPoyMOBP,. Tp. Kaa. O. Ect., XLII, b. 8, 1910, CTp. 25. 
