Reproduction of Coregonus nelsonii
Document source:
Main Ref. Morrow, J.E., 1980
Mode dioecism
Fertilization external
Mating type
Spawning frequency
Spawning aggregation Ref.  
Batch spawner Ref.  
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Description of life cycle and mating behavior The spawning run involves an upward migration beginnning as early as late June. The spawning act occurs at night or during the day. A female begins to swim vertically toward the surface, belly upstream. A male (sometimes 2 or 3) joins her and eggs and milt are released as fish approach the surface. The fish break the surface, fall away from each other and return to the bottom. After spawning most move downstream. The young of the year move downstream during their first year and do not return until they are sexually mature. Generally, the same spawning grounds are utilized yearly (Ref. 27547).
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
Entered by Garilao, Cristina V. on 04.06.99
Modified by Luna, Susan M. on 07.19.17
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