Vollestad, 1987



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Rutilus rutilus Spawning conditions Spawning temperature 7.4-10.5 8.95 °C
Rutilus rutilus Spawning conditions Spawning period duration Lasted 15-25 days 20.0 weeks
Rutilus rutilus Spawning conditions Spawning water type Stream near a lake Stagnant water
Rutilus rutilus Egg Incubation time About 10 10.0 days
Rutilus rutilus Female Age at sexual maturity First male spawned at age 2, all males older than 3 are mature 2.0 years
Rutilus rutilus Egg Degree-days for incubation About 160 160.0 °C * day
Rutilus rutilus Spawning conditions Spawning migration period Upstream migration of mature roach strated in early May with medium or falling watr level (3-6°C). Main stream migration lasted about 5-7 days ['May']
Rutilus rutilus Spawning conditions Spawning season Started in Mid-May until Mid-June ['May', 'June']
Rutilus rutilus Spawning conditions Homing Return with 90.2% precision to their home tributary for subsequent spawnings Present
Rutilus rutilus Female Length at sexual maturity Between 10-12 cm for age 3, and 12-14 cm for age 4 [Female] 11.0 cm
Rutilus rutilus Male Length at sexual maturity From 8-9 at age 2, to 10-11 for age 3, male 8.5 cm
Rutilus rutilus Female Age at sexual maturity The first females spawned at age 3, all females older than age 5 are mature 3.0 year
Rutilus rutilus Spawning conditions Parity Iteroparous, oldest male was 13 and oldest female 17 years Iteroparous