Skryabin, 1993



Citation


Skryabin, A.G. (1993) The biology of stone loach Barbatula barbatulus in the rivers Goloustnaya and Olkha, East Siberia. Journal of fish biology, pp. 361-374

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Barbatula barbatula Egg Oocyte diameter 1 [Mean egg size] 1.0 mm
Barbatula barbatula Female Age at sexual maturity 1-2 1.5 year
Barbatula barbatula Female Length at sexual maturity 7-7.3 7.15 cm
Barbatula barbatula Female Weight at sexual maturity 5.5-6 g 5.75 kg
Barbatula barbatula Female Relative fecundity 0.424 ± 0.019 [River Goloustnaya] and 0.552 ± 0.015 [River Olkha] 0.42 thousand eggs/kg
Barbatula barbatula Female Absolute fecundity 1.710-27.600 in females of 70-182 mm, averaging 11.96 ± 0.72 11.96 thousand eggs
Barbatula barbatula Female Onset of oogenesis After autumn the GSI was 1.6 ± 0.24%, lower than that in the spring ['April', 'May', 'June', 'October', 'November', 'December']
Barbatula barbatula Female Intensifying oogenesis activity The subsequent ripening of eggs and restoration of the GSI to April-May levels took 2.5-3 months ['April', 'May']
Barbatula barbatula Female Maximum GSI value 30-32 [Before spawning in May] 31.0 percent
Barbatula barbatula Female Resting period 1 [Short] 1.0 months
Barbatula barbatula Female Resting period 2.8± 0.43 [After spawning in May] 2.8 months
Barbatula barbatula Male Age at sexual maturity 1 1.0 years
Barbatula barbatula Spawning conditions Spawning season Begin 10-12 May and end in the end of May ['May']
Barbatula barbatula Spawning conditions Spawning period duration 3-5 4.0 weeks
Barbatula barbatula Spawning conditions Spawning temperature 6°C in the morning, 9-10°C 9.5 °C
Barbatula barbatula Spawning conditions Nycthemeral period of oviposition Night Night
Barbatula barbatula Spawning conditions Spawning release Two periods of spawning : May and late-summer-early autumn Multiple
Barbatula barbatula Spawning conditions Spawning release Interval of 2.5-3 months between first and second spawning event No category