Acipenser ruthenus (Sterlet):  

Predictions & Data for this entry

Model:  std  

COMPLETE = 1.8
MRE = 0.106
SMSE = 0.113

Zero-variate data
DataObservedPredicted(RE)UnitDescriptionReference
ab 8 10.13 (0.2664)dage at birth RochWill1991
ap2550 1684 (0.3397)dage at puberty Rein2002, PeteVecs2006
am9500 9500 (3.967e-05)dlife spanPikiDoek2005
Lb0.65 0.6728 (0.03513)cmtotal length at birthRochWill1991
Lp 42 43.18 (0.02819)cmtotal length at pubertyRochWill1991
Li120 112.4 (0.06312)cmultimate total lengthRochWill1991
Wb0.0014 0.001274 (0.09011)gwet weight at birthRochWill1991
Wp292 336.8 (0.1534)gwet weight at pubertyRochWill1991
Wi6400 5943 (0.07145)gultimate wet weightRein2002
Ri21.3 21.55 (0.01155)#/dmaximum reprod rateRein2002
Pseudo-data at Tref
DataGeneralised animalAcipenser ruthenusUnitDescription
v 0.02 0.05407cm/denergy conductance
kap 0.8 0.994-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 11.83J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.7924-growth efficiency

Facts

  • *Sex ratio:* The numerical proportions of the sexes vary in different rivers and according to the season.At the spawning sites the males are usually predominant, accounting for about 60 to 70
  • *reproductive capacity:* of our farmed sterlets began to deteriorate in fish older than 1416 years (Data from aquaculture, Williot et al. 2005) (ref: WilliBron1993)
  • *Spawning frequency:* only once or twice during life (Danube, Kovri_nych 1988 citt. in Holcik et al. 2006); every year in Danube (both males and females, Manea 1966 citt. in Rochard et al. 1991); 1-2 for females (Jankovic 1958 citt. in Rochard et al. 1991); intervals between two spawnings 1-2 years (Bacalbasa-Dobrovici 1991); each 1-3 years (Vassilev sturgeon.pdf); every 2 years (Pikitch et al. 2005); The question of the spawning periodicity of sterlets has yet to be answered. Some investigators state that they spawn every year, while others tend to believe that the gonads may become ripe again only after a one or more years pause, the recovery period being shorter for males. One researcher found that in the Danube River, males and young females up to the age of seven years spawn every year. Older females, however, become ripe only after an interval of two years (Reinartz 2002). it is believed that younger individuals are spawning each year, and the old individuals every second year (Lenhardt et al. 2005a) period between two spawnings 1 year (40-50
  • *Fecundity:* 7,000108,000 eggs/female (in Danube, Reinartz 2002; Kolarevi? 2004; Bloesch et al. 2006); 4,000-140,000 eggs/female (Ural River, Lagutov and Lagutov 2008); up to 137,600 eggs/female (Simonovi? 2001) (ref: Rein2002)
  • reproductive age 3-17 (Ural River , Lagutov and Lagutov 2008); 4-5 (Kovri_nych 1988 citt. in Holcik et al. 2006); 4-5 years (Bacalbasa-Dobrovici 1991); 4-7 (in Danube Reinartz 2002; Bloesch et al. 2006; Lenhardt et al. 2005a); 6 years (Pikitch et al. 2005); 6 years (in the wild), 3 years (in aquaculture) (Chebanov and Billard 2001); 7 years (Vassilev sturgeon.pdf); 7-8 (Ural River, Lagutov and Lagutov 2008); 7-9 years (40-45 cm, URSS, Charlon and Williot 1978 citt. in Rochard et al. 1991). (ref: PikiDoek2005)
  • *Maturity:* between 3-8 years of age (Peterson et al. 2006) which sex?; Maturity at age 4-5 (Simonovi? 2001) which sex?; 5-6 years (Kolarevi? 2004) which sex?; Age of first offspring for males: 3-4 years (Bacalbasa-Dobrovici 1991); 3-5 (in Danube, Reinartz 2002; Bloesch et al. 2006; Lenhardt et al. 2005a); 3-7 (in Danube, Manea 1966 citt. in Rochard et al. 1991); 4 years (Vassilev sturgeon.pdf); 4 years (in the wild), 2 years (in aquaculture) (Chebanov and Billard 2001); 4-5 years (Ural River, Lagutov and Lagutov 2008; 35 cm, USSR, Charlon and Williot 1978 citt. in Rochard et al. 1991); 5-7 (Kovri_nych 1988 citt. in Holcik et al. 2006); males reach sexual maturity, as a rule, one to two years earlier than the females (Reinartz 2002) (ref: Rein2002)
  • *Egg diameter:* 1.9-2.5 mm (Detlaf et al. 1981 citt. in Rochard et al. 1991); 2.5-2.6 mm (Data from aquaculture, Williot et al. 2005) (ref: WilliBron1993)
  • *Ultimate length:* rarely exceeds 80 cm (Peterson et al. 2006); >90 cm (Maitland 1987 citt. in Rochard et al. 1991); 100-120 cm (Vassilev sturgeon.pdf); 110 cm (Pikitch et al. 2005); >110 cm (Tsepkin and Sokolov 1979 citt. in Rochard et al. 1991); >125 cm (Charlon and Williot 1978 citt. in Rochard et al. 1991); rarely 125 cm, normally up to 100 cm (in Danube, Reinartz 2002; Kolarevi? 2004); 125 cm (Simonovi? 2001; Bloesch et al. 2006; Lenhardt et al. 2005a) (ref: WilliBron1993)
  • *Ultimate weight:* rarely exceeds 3 kg (Peterson et al. 2006); up to 15 kg (Ural River, Lagutov and Lagutov 2008); 16 kg (Vassilev sturgeon.pdf; Pikitch et al. 2005; Simonovi 2001; Lenhardt et al. 2005a); >16 kg (Charlon and Williot 1978 citt. in Rochard et al. 1991); rarely 16 kg, normally up to 6-6.5 kg (in Danube, Reinartz 2002; Kolarevi? 2004) (ref: Rein2002)
  • *Age-length-weight relationship:* 10 years = 62.0 cm = 1123 g (females), 7 years = 47.9 cm = 477 g (Sample from Holcik et al. 2006); 1 years = 26 cm, 2 years = 35 cm, 6 years = 52 cm, 11 years = 59 cm (Jankovic 1956 citt. in Bacalbasa-Dobrovici 1991); 4-5 years = 35 cm (males), 7-9 years = 40-45 cm (females) (Charlon and Williot 1978 citt. in Rochard et al. 1991); 47 years = 40 cm (females, maturity) (Reinartz 2002) (ref: Rein2002)
  • *Life span:* 10 years females, 7 years males (Sample from Holcik et al. 2006); 24 (in Danube) (Reinartz 2002; Bloesch et al. 2006); 25 years (Vassilev sturgeon.pdf; Simonovi? 2001; Kolarevi? 2004); 26 years (historic), 22 (current) (Pikitch et al. 2005); 26 years (Lenhardt et al. 2005a); 26 (archeological remains), 26 (Kuibyshev reservoir), 27 (Yenisei River) (Reinartz 2002); around 30 years (USSR, Charlon and Williot 1978 citt. in Rochard et al. 1991); 30 (Ural River, Lagutov and Lagutov 2008) females live considerably longer than the males (according to all authors, Reinartz 2002) (ref: Rein2002, PikiDoek2005, WilliBron1993)

Bibliography

  • Wiki
  • Kooy2010
  • Rein2002
  • PikiDoek2005
  • PeteVecs2006
  • WilliBron1993
  • RochWill1991

Bibtex files with references for this entry


Yoan Eynaud, 2011/03/17 (last modified by Bas Kooijman 2016/10/18)

accepted: 2016/02/24

refer to this entry as: AmP Acipenser ruthenus version 2016/02/24 bio.vu.nl/thb/deb/deblab/add_my_pet/