White Sturgeon Life History

In order to produce reliable estimates of the population of Fraser River White Sturgeon novel life history and migration information for the species and heightened awareness levels in the public regarding the state of this culturally and ecologically significant species the Society designed a cost-effective monitoring and assessment program.

White sturgeon life history. Records indicate that sturgeon historically occurred beyond the described boundaries but at low abundance. Ing occurred in all four years and that the estimated spawning period each year ranged from 38 to 48 days. 21 rows 2009-06-25 Dwelling in the Nechako Fraser Kootenay and Columbia Rivers is a survivor from the age of the dinosaurs - the white sturgeon.

From white sturgeon egg collections we determined that successful spawn. White sturgeon early life history phases are particularly sensitive to contaminant effects and an LC50 the concentration required to kill 50 of tested individuals for copper Cu was identified at 22 ųgmL Vardy et al. The family is grouped into four genera.

WHITE STURGEON III 1-5 May 2004 White sturgeon historically had access from the ocean all the way to the Columbias Canadian headwaters and Shoshone Falls in the upper Snake River. Life history of white sturgeon Aci. The White Sturgeon Acipenser transmontanus is the largest freshwater fish species in North America with some individuals reaching over 100 years of age and over six metres in total length.

Thats the Early Cretaceous period. White sturgeon eggs are. During this time the average individual in the harvest was 7 feet and 150 pounds.

In British Columbia and Canada there are only six known spawning populations inhabiting the Fraser Columbia and Kootenay River systems. Larvae are fragile and appear to suffer high mortalities. Egg fertilization Spawning occurs when the female sturgeon releases eggs and the male sturgeon fertilizes them.

Ied in the lower Columbia River downstream from Bonneville Dam from 1988 through 1991. This mysterious creature is the largest freshwater fish in Canada and has existed relatively unchanged for millions of years - surviving volcanic eruptions ice ages and climatic upheavals. Necessary for white sturgeon to move long distances between the various types of habitat necessary to complete their life history.