Reproduction of Acipenser oxyrinchus
Document source: http://www.fishbase.org/Reproduction/FishReproSummary.php?ID=2593&StockCode=2789
 
Main Ref. Sokolov, L.I. and L.S. Berdicheskii, 1989
Mode dioecism
Fertilization external
Spawning frequency
Batch spawner Ref.  
Reproductive guild nonguarders
open water/substratum egg scatterers
Description of life cycle and mating behavior Matures at increasing ages with increasing latitude (Ref. 88171). Both sexes do not spawn yearly and spawning intervals may vary according to area. In the St. Lawrence River, males spawn every 1-5 years, females every 3-5 years (Ref. 89103). Adults from the sea begin to ascend the lower reaches of large rivers in spring with the majority ascending immediately prior to spawning. Spawning occurs between March and August (Ref. 59043), when water temperature is 13.3-17.8 °C (Ref. 89118). Spawning occurs over bedrock, boulders or gravel bottoms, in depths exceeding 10 m at current velocities of 0.5-0.8 m/s (Ref. 59043, 89103). Exact time of spawning depends on temperature (Ref. 26938). Per female 0.4-8 million eggs may be spawned (Ref. 45706, 84845, 89137). Eggs demersal, sticking to stones, measuring 2.55 mm in diameter and hatching in 1 week at 17.8 °C (Ref. 4639, 9980). Adults return to the sea after spawning (Ref. 59043). Sturgeons in general have a high capacity for hybridization and most species are able to cross-breed (Ref. 89103, 89117).
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
Entered by Torres, Armi G. on 03.03.98
Modified by Franke, Andrea on 01.25.12
Comments & Corrections
Sign our Guest Book
Back to Search


Strict Standards: Non-static method FishBase::displayActaTextAndLink() should not be called statically in D:\fishbaseweb\Reproduction\FishReproSummary.php on line 236
Publish in our journal partner Acta Ichthyologica et Piscatoria the results of your primary research on fishes about growth, weight-length relationships, reproduction (maturity, fecundity, spawning), food and diet composition, introductions and range extensions for faster subsequent entry in (2011 impact factor: 0.547).

cfm script by eagbayani, 21.08.01 ,  php script by rolavides, 11/02/08 ,  last modified by elaxamana, 10:43 AM 1/09/09