Noges and Järvet, 2005



Citation


Noges, P. and Järvet, A. (2005) Climate driven changes in the spawning of roach (Rutilus rutilus (L.)) and bream (Abramis brama (L.)) in the Estonian part of the Narva River basin. Boreal Environment Research, pp. 45-55

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Rutilus rutilus Spawning conditions Mating system Spawning in several groups was observed in rare cases Promiscuity
Abramis brama Spawning conditions Spawning temperature For bream, the typical range is 12-20°C, while extremes may reach 8 and 24°C […] The median water temperature measured in large lakes at the beginning of spawning in bream in rivers respective of lakes (correspondinglyn 12.9 and 13.3°C) was not significantly different [...] Spawning starts at water temperature of 13-14°C and reaches its peak at 16-19°C 16.0 °C
Rutilus rutilus Spawning conditions Spawning temperature Roach spawns most typically at temperatures between 8 and 19.4°C with extremes reaching to 5 and 22°C […] Spawned spontaneously in the laboratory when the temperature reached 18-20°C […] Spawning started in lakes when the median water temperature measured at four stations in large lakes reached 8.7°C. During roach spawning in rivers, the lake temperature was almost one degree lower [...] In lake Peipse roach starts to spawn at water temperature of 8-10°C, and mass spawning takes place at 10-13°C 19.0 °C
Abramis brama Spawning conditions Spawning period duration Median values (upper and lower quartiles in parenthesis) => 3 (2-6) in lakes and 2 (1-3) in rivers 4.0 weeks
Rutilus rutilus Spawning conditions Spawning period duration Median values (upper and lower quartiles in parenthesis) => 5 (3-9) in lakes and 3 (2-5) in rivers […] Our analysis revealed a rather short period spawning duration (median 5 days) at a particular spawning ground, but obviously bue to the large spatial variability of conditions in the whole basin, the spawning period is extended to several weeks 6.0 weeks
Rutilus rutilus Male Onset of spermatogenesis Gonads of the male in August ['August']
Abramis brama Female Age at sexual maturity Male breams reach sexual maturity in Vortsjärv at the age of (6)7-9(10) years 8.0 years
Rutilus rutilus Female Age at sexual maturity Males roaches reach their sexual maturity at 2(3)-4(5) years age 2.0 years
Rutilus rutilus Female Onset of oogenesis Eggs for next spring start to develop already in July ['April', 'May', 'July', 'June']
Rutilus rutilus Spawning conditions Spawning migration period The upstream migration of roach started in a small river in Norway at water temperatures of 6-10°C, and in the Malse River (Czech Republic) at 13-14°C No data
Abramis brama Spawning conditions Spawning season Bream started to spawn 16-17 days later than roach, the median dates being 16 May for rivers and 22 May for lakes. One half of all measurements fell into a range of 16 days between 13 and 28 May. ['May']
Rutilus rutilus Spawning conditions Spawning season Roach stared to spawn on average aound 30 April (day no. 120) in rivers and around 5 May in lakes within the Narva River Basin. One half of all measurement fell into a range of 16 days between 26 April and 11 May […] In lake Peipsi roach starts to spawn at the end of April. Spawning ends during the second half of May ['April', 'May']
Abramis brama Female Length at sexual maturity Female breams reach sexual maturity in Vortsjärv at 26-36 cm 31.0 cm
Rutilus rutilus Female Length at sexual maturity Bigger than males 10-13 cm 11.5 cm
Abramis brama Male Length at sexual maturity Male breams reach sexual maturity in Vortsjärv 25-32 cm long 28.5 cm
Rutilus rutilus Male Length at sexual maturity When they are 8-11 cm long 9.5 cm
Abramis brama Female Age at sexual maturity Female breams reach sexual maturity in Vortsjärv at (6)7-10(11) years old 8.5 year
Rutilus rutilus Female Age at sexual maturity Female first time spawners are older, 3(4)-5(6) years 3.0 year
Abramis brama Spawning conditions Spawning release Bream is a single spawner in the sense the in one individual all eggs mature synchronously […] In lake Peipsi, breams lay their eggs usully in 2-3 groups during the spawning period Total