No detailed citation.
Species | Development state | Trait | Primary Data | Secondary Data |
Perca flavescens | Egg | Oocyte diameter | 1.62-2.09, mean 1.76 [Fertilized eggs before water-hardening] | 1.85 mm |
Perca flavescens | Egg | Egg size after water-hardening | Mean diameter of 2.26 mm, 1.87 to 2.81 but some describes it to reach 4.5 mm [Water hardening within the first few minutes] | 2.26 mm |
Perca flavescens | Egg | Egg Buoyancy | Semi-demersal [Strands are slightly heavier than water and float in the current until they become untangled in debris] | Demersal |
Perca flavescens | Egg | Egg adhesiveness | Lose its adhesive properties within 3 minutes in water | Adhesive |
Perca flavescens | Egg | Incubation time | 27 days [8.5-12°C] | 10.25 days |
Perca flavescens | Egg | Degree-days for incubation | 229-300 [About 27 days at 8.5-12°C] | 264.5 °C * day |
Perca flavescens | Larvae | Initial larval size | 5.5-6.0 | 5.75 mm |
Perca flavescens | Larvae | Larvae behaviour | Immediatly active swimmer | Demersal |
Perca flavescens | Larvae | Temperature during larval development | In general, water temperatures varied between 10 and 22°C and it is suspected that this range prevails in the shallow waters of the natural spawning grounds. In other studies, specimens were raised under hatchery conditions around 20°C | 10.0 °C |
Perca flavescens | Spawning conditions | Spawning season | March-April | ['March', 'April'] |
Perca flavescens | Spawning conditions | Spawning water type | Upper reaches of many major tributaries | No category |
Perca flavescens | Spawning conditions | Spawning depth | Shallow : 60-90 cm deep | 75.0 m |
Perca flavescens | Spawning conditions | Spawning release | Eggs of the yellow perch are extruded in adhesive strands, eggs are extruted in long adhesive and 'accordion folded' strands about 5 cm thick | No category |
Perca flavescens | Egg | Egg size after water-hardening | 3.50 | 3.5 mm |
Perca flavescens | Egg | Temperature for incubation | 8.5-12 | 10.25 °C |
Perca flavescens | Larvae | Full yolk-sac resorption | 7-18 days at 20 C | 12.5 °C * day |
Perca flavescens | Larvae | Sibling intracohort cannibalism | absent | Absent |