Cassou-Leins, 2000



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Alosa alosa Spawning conditions Mating system By pair Monogamy
Alosa alosa Spawning conditions Nycthemeral period of oviposition At the beginning of the night : chiefly during 2 to 3 hours [Longer in the Alosa alosa compared to other Alosa] Night
Alosa fallax Spawning conditions Nycthemeral period of oviposition At the beginning of the night : chiefly during 2 to 3 hours Night
Alosa alosa Spawning conditions Spawning substrate Pebbles and gravels: mainly 5-9 cm but vary between 0.2-18 cm Lithophils
Alosa fallax Spawning conditions Spawning substrate Pebbles and gravels: mainly 5-9 cm but vary between 0.2-18 cm Lithophils
Alosa alosa Spawning conditions Spawning temperature Always above 12°C, but mainly at 15-18 16.5 °C
Alosa fallax Spawning conditions Spawning temperature 16-18 17.0 °C
Alosa alosa Spawning conditions Spawning period duration 5-14 In Atlantic Ocean and Mediterranean Sea populations 9.5 weeks
Alosa fallax Spawning conditions Spawning period duration 3-6 In Atlantic Ocean and Mediterranean Sea populations 4.5 weeks
Alosa alosa Spawning conditions Spawning water type Chiefly 50-100 m wide, with water current of 0.9-2 m/s Flowing or turbulent water
Alosa fallax Spawning conditions Spawning water type Chiefly 50-100 m wide, with water current of 0.9-2 m/s, also in estuaries Flowing or turbulent water
Alosa alosa Spawning conditions Spawning depth In water less than 3 m deep 3.0 m
Alosa fallax Spawning conditions Spawning depth In water less than 3 m deep [sometimes between 15-30 cm] 22.5 m
Alosa alosa Female Relative fecundity 77-576 [Extreme values] 326.5 thousand eggs/kg
Alosa fallax Female Relative fecundity 84-147 [Extreme values] 115.5 thousand eggs/kg
Alosa alosa Female Absolute fecundity 25-636 [Extreme values] 330.5 thousand eggs
Alosa fallax Female Absolute fecundity 29-300 [Extreme values] 164.5 thousand eggs
Alosa alosa Spawning conditions Spawning season March to August depends on the latitude [In Europe mainly in May] ['August', 'March', 'May']
Alosa fallax Spawning conditions Spawning season March to August depends on the latitude [In Europe mainly in May] ['August', 'March', 'May']
Alosa alosa Spawning conditions Spawning release Only one batch by night, 5 to 7 batches during a spawning season Mutliple
Alosa fallax Spawning conditions Spawning release Only one batch by night, 5 to 7 batches during a spawning season Mutliple