Vaino and Saat, 2003


Citation

Vaino, V. and Saat, T. (2003) Spined loach, Cobitis taenia L., pp. 241-245

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Cobitis taenia Egg Oocyte diameter 1.2-1.5 [Large oocytes] 1.35 mm
Cobitis taenia Egg Egg size after water-hardening 2.54 [2.40-3.12, activated eggs] 2.76 mm
Cobitis taenia Egg Incubation time 2-4 [17-21°C] 3.0 days
Cobitis taenia Egg Temperature for incubation 17-21 19.0 °C
Cobitis taenia Egg Degree-days for incubation 42-68 55.0 °C * day
Cobitis taenia Larvae Initial larval size 5.4 5.4 mm
Cobitis taenia Larvae Larvae behaviour Live on the bottom, at the age of 3-4 days their activity increases Demersal
Cobitis taenia Larvae Temperature during larval development 16-24 [Optimum temperature] 20.0 °C
Cobitis taenia Female Age at sexual maturity 4 4.0 year
Cobitis taenia Female Length at sexual maturity 7.7-7.9 7.8 cm
Cobitis taenia Female Weight at sexual maturity 2.81-2.95 g ! 2.88 kg
Cobitis taenia Female Relative fecundity RF (per Total weight) is 113-193, mean 148 ± 12 eggs per g 148.0 thousand eggs/kg
Cobitis taenia Female Absolute fecundity 0.321-1.314 0.82 thousand eggs
Cobitis taenia Female Oocyte development Two well-separated size classes of oocytes : small (0.5 mm) and large (1.2-1.5 mm). In addition some medium-sized oocytes can be found No category
Cobitis taenia Female Onset of oogenesis In late July GSI decline rapidly to 3-6%. From this month a phase of relative quiescence in gonad development follows proceeding until the next spring ['April', 'May', 'June', 'July']
Cobitis taenia Female Intensifying oogenesis activity In females from South Estonian rivers (Vohandu, Ahja) a rapid increase in gonad weight occurs during May and June ['May', 'June']
Cobitis taenia Female Maximum GSI value 13-24 [Late June and early July, GSI depending on the fish length] 18.5 percent
Cobitis taenia Female Resting period A phase or relative quiescence in gonad development follows preceeding until the next spring [From July to May] 12.0 months
Cobitis taenia Female Resting period 3-6 [In late July] 4.5 months
Cobitis taenia Male Age at sexual maturity 3 3.0 years
Cobitis taenia Male Length at sexual maturity 5.7-6 5.85 cm
Cobitis taenia Male Weight at sexual maturity 0.00098-0.000107 [0.98-1.07 g !] 0.0 kg
Cobitis taenia Male Male sexual dimorphism Growth of the Canestrini organ Absent
Cobitis taenia Male Maximum GSI value 2.8 [June-July] 2.8 percent
Cobitis taenia Male Resting period Late June and early July [similar to female cycle] 3.0 months
Cobitis taenia Spawning conditions Spawning season Late June-Middle of July [Estonia] ['June', 'July']
Cobitis taenia Spawning conditions Spawning period duration 2-3, but also 5 2.5 weeks
Cobitis taenia Spawning conditions Spawning temperature 16-18 17.0 °C
Cobitis taenia Spawning conditions Spawning water type Slow-flowing or stagnant places with rich vegetation Stagnant water
Cobitis taenia Spawning conditions Spawning depth Shallow (0.3-0.8 m). 0.55 m
Cobitis taenia Spawning conditions Spawning substrate Eggs are deposited on vegetation Phytophils
Cobitis taenia Spawning conditions Spawning release Only a single batch of eggs during a few days Multiple
Cobitis taenia Spawning conditions Parental care No brood protection No category