Korzelecka et al, 1998


No detailed citation.

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Perca fluviatilis Egg Egg size after water-hardening Swollen egg (without jelly enveloppe, 50 min. after the fertilization) measured 1.25 mm on the average 1.25 mm
Perca fluviatilis Egg Temperature for incubation Incubated at 14 [The best and longest larvae originate from eggs incubated in 12-16°C] 14.0 °C
Perca fluviatilis Egg Degree-days for incubation This study: 126 [At 14°C] [The number of thermal untis (D°) from egg fertilization to hatching varies within a surprisingly wide range (if one is to believe different authors) from 90 through 175 at 12-14°C, to as many as 223 and 195] 13.0 °C * day
Perca fluviatilis Larvae Initial larval size Length of the hatchlings was 3.5 mm on the average [Other studies: newly hatched perch larvae are from 4 to 5.3 mm long, also described at 6.5 mm and 3-6] 4.5 mm
Perca fluviatilis Female Age at sexual maturity 3-4 [Female], but also 2-4 3.5 year
Perca fluviatilis Female Absolute fecundity 12-300 depedning on female 156.0 thousand eggs
Perca fluviatilis Male Age at sexual maturity Sexual maturity is attained by perch males at the age of 2-3 years, but also 1-3 2.5 years
Perca fluviatilis Spawning conditions Spawning season Spawnings in natural conditions in early spring, commecing from March in south regions and from June in the north ['March', 'April', 'May', 'June']
Perca fluviatilis Spawning conditions Spawning substrate Bottom overgrown with a variety of submerged plants, and with patches of emergent vegetation. Underwater sandy and gravel bottom elevations are also preferred by this fish Lithophils