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 Spawning conditions Parental care No brood protection No category
Cobitis taenia Spawning conditions Spawning substrate Eggs are deposited on vegetation Phytophils
Cobitis taenia Spawning conditions Spawning temperature 16-18 17.0 °C
Cobitis taenia Spawning conditions Spawning period duration 2-3, but also 5 2.5 weeks
Cobitis taenia Spawning conditions Spawning water type Slow-flowing or stagnant places with rich vegetation Ambiguous
Cobitis taenia Spawning conditions Spawning depth Shallow (0.3-0.8 m). 0.55 m
Cobitis taenia Female Maximum GSI value 13-24 [Late June and early July, GSI depending on the fish length] 18.5 percent
Cobitis taenia Male Male sexual dimorphism Growth of the Canestrini organ Absent
Cobitis taenia Egg Incubation time 2-4 [17-21°C] 3.0 days
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 Male Maximum GSI value 2.8 [June-July] 2.8 percent
Cobitis taenia Female Age at sexual maturity 3 3.0 years
Cobitis taenia Egg Degree-days for incubation 42-68 55.0 °C * day
Cobitis taenia Egg Temperature for incubation 17-21 19.0 °C
Cobitis taenia Female Resting period A phase or relative quiescence in gonad development follows preceeding until the next spring [From July to May] No data
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', 'July', 'June']
Cobitis taenia Egg Egg size after water-hardening 2.54 [2.40-3.12, activated eggs] 2.76 mm
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 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 Male Resting period Late June and early July [similar to female cycle] No data
Cobitis taenia Egg Oocyte diameter 1.2-1.5 [Large oocytes] 1.35 mm
Cobitis taenia Female Absolute fecundity 0.321-1.314 0.8175 thousand eggs
Cobitis taenia Spawning conditions Spawning season Late June-Middle of July [Estonia] ['June', 'July']
Cobitis taenia Larvae Temperature during larval development 16-24 [Optimum temperature] 20.0 °C
Cobitis taenia Female Weight at sexual maturity 2.81-2.95 g ! 2.88 kg
Cobitis taenia Female Length at sexual maturity 7.7-7.9 7.8 cm
Cobitis taenia Male Length at sexual maturity 5.7-6 5.85 cm
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 Male Weight at sexual maturity 0.00098-0.000107 [0.98-1.07 g !] 0.000543 kg
Cobitis taenia Female Age at sexual maturity 4 4.0 year
Cobitis taenia Spawning conditions Spawning release Only a single batch of eggs during a few days Mutliple