Thorpe, 1977



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Perca fluviatilis Spawning conditions Nycthemeral period of oviposition Day and night Ambiguous
Perca fluviatilis Spawning conditions Spawning substrate Would spawn anywhere away from fast currents attaching their eggs to plants or logs, also over sand and gravel, floating debris: wide variety of habitats Ambiguous
Perca fluviatilis Spawning conditions Spawning site preparation No No category
Perca fluviatilis Spawning conditions Spawning period duration 3-7 [2-18 days on the spawning ground for males and 1-4 days for females] 5.0 weeks
Perca fluviatilis Spawning conditions Spawning water type Lakes, they would spawn anywhere away from fast currents Ambiguous
Perca fluviatilis Spawning conditions Spawning depth Spawn mostly at 0.5-3 m in natural lakes, but may also spawn at depths to 8 m in large lakes and reservoirs 1.75 m
Perca fluviatilis Female Female sexual dimorphism Gravid females in spring are distinct due to their swollen appearance and slight protusion of the genital orifice Present
Perca fluviatilis Male Male sexual dimorphism Males at spawning are generally brighter in colour Present
Perca fluviatilis Egg Egg adhesiveness Outer adhesive layer, but within about 3 min after fertilization, the membrane swells and after hardening lost its adhesive qualities Adhesive
Perca fluviatilis Egg Incubation time 7 [17°C], 19 [10°C] 7.0 days
Perca fluviatilis Female Relative fecundity 30-419 [Extreme values in natural field] 224.5 thousand eggs/kg
Perca fluviatilis Female Age at sexual maturity 1-2 1.5 years
Perca fluviatilis Egg Degree-days for incubation 180-216 198.0 °C * day
Perca fluviatilis Spawning conditions Spawning migration distance Usually migrations are really short No data
Perca fluviatilis Egg Egg size after water-hardening 1.9-2.8 [In lake 1.9-2.4] 2.35 mm
Perca fluviatilis Spawning conditions Spawning migration period Males arrive on the spanwing ground days or weeks before females and remaining behind afterwards No data
Perca fluviatilis Egg Oocyte diameter 1.6-2.1 [Fertilized egg before hardening] 1.85 mm
Perca fluviatilis Female Absolute fecundity 0.95-210 105.475 thousand eggs
Perca fluviatilis Spawning conditions Spawning season February and July in Nothern Hemisphere ['February', 'July']
Perca fluviatilis Spawning conditions Homing "Not well established, but once ""home range"" has been recorded" Present
Perca fluviatilis Female Weight at sexual maturity 0.02-0.24 [20-240 g] 0.13 kg
Perca fluviatilis Female Length at sexual maturity 12-18 15.0 cm
Perca fluviatilis Male Length at sexual maturity 5-12 8.5 cm
Perca fluviatilis Larvae Initial larval size 4.07-6.6 [Range in different populations: 4.1-5.5, 5.5-6.0] 5.335 mm
Perca fluviatilis Male Weight at sexual maturity 0.01-0.06 [10-60 g] 0.035 kg
Perca fluviatilis Female Age at sexual maturity 2-3 2.5 year
Perca fluviatilis Spawning conditions Spawning release All together, unique transparent gelatinous accordion-folded stran Total
Perca fluviatilis Spawning conditions Parity Iteorparous, but perch spawn only once per year but it is not know with certainity that they spawn every year after reaching maturity No category