Vollestad and Jonsson, 1986



Citation


Vollestad, L.A. and Jonsson, B. (1986) Life-history characteristics of the European Eel Anguilla anguilla in the Imsa River, Norway. Transactions of the American Fisheries Society, pp. 864-871

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Anguilla anguilla Spawning conditions Spawning water type Sargasso sea No category
Anguilla anguilla Spawning conditions Spawning depth Spawning probably occurs at great depths No data
Anguilla anguilla Female Female sexual dimorphism Females are larger than males Absent
Anguilla anguilla Female Maximum GSI value About 50% in artificial conditions 50.0 percent
Anguilla anguilla Male Maximum GSI value Gonad weight of mature males only constitutes, at most 14% of the body weight 14.0 percent
Anguilla anguilla Female Age at sexual maturity Mean age about 5, range 2.5-9.1, means in various locations 5.8 years
Anguilla anguilla Female Weight at sexual maturity Mean 0.425, range 0.130-2.105 [Female, n=1145] 1.1175 kg
Anguilla anguilla Female Length at sexual maturity Mean 61, range 39.0-105 [Female, n=1145] 72.0 cm
Anguilla anguilla Male Length at sexual maturity Mean 41, range 32.5-45 [Female, n=75] 38.75 cm
Anguilla anguilla Male Weight at sexual maturity Mean 0.107, range 0.028-0.162 [Female, n=75] 0.095 kg
Anguilla anguilla Female Age at sexual maturity Mean age about 7, range 3.4-12.3, means in various locations 7.85 year
Anguilla anguilla Spawning conditions Spawning release Each female probably spawns intermittently with several males each time Ambiguous