Anwand, 1998



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Coregonus albula Spawning conditions Spawning water type Spawning areas are mainly situated in the sublitoral zone. No category
Coregonus albula Female Maximum GSI value Mean of 19.6, range 13.6-25.0 [In December for nominate form] and mean of 10.9, range 9.3-13.9 [In April/May, for deepwater form] 19.3 percent
Coregonus albula Male Onset of spermatogenesis Developped slowly from spring to the end of June (Maturation stage III: compressing and stretching phase) for the nominate form. For deepwater form, in summer and autumn, gonads mature very slowly, just passing maturation stages II and III while reaching maturation stage IV inly in december. ['April', 'May', 'September', 'August', 'December', 'June', 'July', 'October', 'November']
Coregonus albula Female Relative fecundity Relative fecundity of examined nominate form: mean 95600, and deepwater form, mean 84780 95600.0 thousand eggs/kg
Coregonus albula Male Maximum GSI value Mean of 5.1, range 3.9-6.5 [In December for nominate form] and mean of 4.9, range 3.5-6.1 [In April/May, for deepwater form] 5.2 percent
Coregonus albula Female Age at sexual maturity Spawners of both forms reached maturity at 2 [Both sex] 2.0 years
Coregonus albula Female Resting period During the winter months, vendace remain in the regenerating and resting phaseses (maturation stages VI and II) for nominate form. For deepwater form, from May until July/August No data
Coregonus albula Male Main spermatogenesis activity Beginning in the middle of the year gonads develop faster for nominate form. For deepwater form, full maturity (stage V) is reached in April/May only shortly before spawning. ['April', 'May']
Coregonus albula Female Onset of oogenesis Developped slowly from spring to the end of June (Maturation stage III: compressing and stretching phase) for the nominate form. For deepwater form, in summer and autumn, gonads mature very slowly, just passing maturation stages II and III while reaching maturation stage IV inly in december. ['April', 'May', 'September', 'August', 'December', 'June', 'July', 'October', 'November']
Coregonus albula Female Intensifying oogenesis activity Beginning in the middle of the year gonads develop faster for nominate form. For deepwater form, full maturity (stage V) is reached in April/May only shortly before spawning. ['April', 'May']
Coregonus albula Male Resting period During the winter months, vendace remain in the regenerating and resting phaseses (maturation stages VI and II) for nominate form. For deepwater form, from May until July/August No data
Coregonus albula Female Absolute fecundity Absolute fecundity of examined nominate form: mean 6290, range 3270-8540, and deepwater form, mean 1560, range 650-2480 5905.0 thousand eggs
Coregonus albula Spawning conditions Spawning season December for nominate form and April/May for the deepwater form in Lake Stechlin ['April', 'December', 'May']
Coregonus albula Female Weight at sexual maturity Weight of examined nominate form: mean 65.8, range 44.0-85.0, and deepwater form, mean 18.4, 10.2-34.8 64.5 kg
Coregonus albula Female Length at sexual maturity Length of examined nominate form: mean 20.8, range 18.5-22.5, and deepwater form, mean 14.2, 10.4-17.7 20.5 cm
Coregonus albula Female Age at sexual maturity Spawners of both forms reached maturity at 2 [Both sex] 2.0 year