Aprahamian et al, 2001


Citation

No detailed citation.

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Alosa alosa Female Age at sexual maturity Adults range from 3 and 8 years 3.0 year
Alosa alosa Female Female sexual dimorphism Females grow faster and mature later than males Absent
Alosa alosa Male Age at sexual maturity Adults range from 3 and 8 years 3.0 years
Alosa alosa Spawning conditions Spawning migration period All anadromous populations have common biological characteristics: the migration (december-June) ['June']
Alosa alosa Spawning conditions Spawning season All anadromous populations have common biological characteristics: the reproduction (April-July), above 11 ['April', 'July']
Alosa alosa Spawning conditions Spawning temperature Above 15 15.0 °C
Alosa alosa Spawning conditions Parity Populations are semelparous Semelparous
Alosa fallax Egg Egg size after water-hardening 1.7-4.5 3.1 mm
Alosa fallax Egg Incubation time 3-5 [Incubation takes 72 to 120 hours depdning on temperature] 4.0 days
Alosa fallax Egg Temperature for incubation Successfully develop between 15 and 25°C 15.0 °C
Alosa fallax Larvae Initial larval size 4.24-9.2 at hatching 6.72 mm
Alosa fallax Female Age at sexual maturity From 2 to 9 years with females mainly at 4-5 years 4.5 year
Alosa fallax Female Relative fecundity 42,540-302,358 421.0 thousand eggs/kg
Alosa fallax Female Absolute fecundity 25,942-675,000 808.5 thousand eggs
Alosa fallax Male Age at sexual maturity From 2 to 9 years, with males from 3-4 years 3.5 years
Alosa fallax Male Male sexual dimorphism Males mature a year earlier Absent
Alosa fallax Spawning conditions Spawning migration period The spawning migration into the estuary begins between February (southern populations) and May (northern populations), extends for thee months and is temperature depend ['February', 'May']
Alosa fallax Spawning conditions Spawning water type Occurs in fresh water No category
Alosa fallax Spawning conditions Spawning depth 0.15 to 8 m 8.0 m
Alosa fallax Spawning conditions Spawning substrate Occurs over susbtrate ranging from mud to sandy-gravel Lithophils
Alosa fallax Spawning conditions Nycthemeral period of oviposition Mainly nocturnal though has been reported during daylight Day
Alosa fallax Spawning conditions Parity All populations are iteroparous, having a high proportion of repeat spawners Iteroparous