Reproductive Conditions of the Klamath River Green Sturgeon

2006 ◽  
Vol 135 (1) ◽  
pp. 151-163 ◽  
Author(s):  
Joel P. Van Eenennaam ◽  
Javier Linares ◽  
Serge I. Doroshov ◽  
David C. Hillemeier ◽  
Thomas E. Willson ◽  
...  
Keyword(s):  
Green Sturgeon ◽  
Klamath River

Using Trace Elements in Pectoral Fin Rays to Assess Life History Movements in Sturgeon: Estimating Age at Initial Seawater Entry in Klamath River Green Sturgeon

2009 ◽  
Vol 138 (2) ◽  
pp. 240-250 ◽  
Author(s):  
Peter J. Allen ◽  
James A. Hobbs ◽  
Joseph J. Cech ◽  
Joel P. Van Eenennaam ◽  
Serge I. Doroshov
Keyword(s):  
Trace Elements ◽  
Life History ◽  
Green Sturgeon ◽  
Pectoral Fin ◽  
Klamath River ◽  
Fin Rays ◽  
Pectoral Fin Rays

Biology, Management, and Protection of North American Sturgeon

2002 ◽  
Keyword(s):  
Growth Rate ◽  
Incubation Temperature ◽  
Larval Survival ◽  
Sampling Time ◽  
White Sturgeon ◽  
Green Sturgeon ◽  
Acipenser Medirostris ◽  
Relative Growth ◽  
Klamath River ◽  
Length Relationship

<em>Abstract.</em>—Gametes of green sturgeon <em>Acipenser medirostris</em> (caught in the Klamath River, California) and farm-reared white sturgeon <em>A. transmontanus</em> were obtained using hormonal induction of ovulation and spermiation. The offspring of one female in each species were reared in the laboratory, to compare their development and growth. Green and white sturgeon embryos had similar rates of development and hatched after 169 h and 176 h, respectively, at incubation temperature 15.7 ± 0.2°C. Embryos of both species exhibited similar holoblastic development and passed through 36 stages characteristic of acipenserids. Green sturgeon fertilization and hatching rates were 41.2% and 28.0%, compared with 95.4% and 82.1% for the white sturgeon. Larval survival to 45 d (metamorphosis) was 93.3% in green and 92.1% in white sturgeon. Newly hatched green sturgeon (length 13.7 ± 0.4 mm, mean ± SD) were larger and less pigmented, compared with white sturgeon. They had large ovoid yolk sacs and did not exhibit pelagic behavior that was observed in white sturgeon. The onset of exogenous feeding in green sturgeon occurred at age 10–15 d and length 24.0 ± 0.5 mm, and metamorphosis was completed at age 45 d and length 74.4 ± 5.9 mm (rearing temperature 18.5 ± 0.2°C). Weight and length of green sturgeon larvae and juveniles were considerably greater than in white sturgeon at each sampling time, but the relative growth rate and weight-length relationship were similar in both species. This suggests an effect of larger egg size and maternal yolk supply on the growth of green sturgeon. We conclude that green sturgeon differs from the white sturgeon in their reproductive strategy and, potentially, reproductive habitat.

Artificial Spawning and Larval Rearing of Klamath River Green Sturgeon

2001 ◽  
Vol 130 (1) ◽  
pp. 159-165 ◽  
Author(s):  
Joel P. Van Eenennaam ◽  
Molly A. H. Webb ◽  
Xin Deng ◽  
Serge I. Doroshov ◽  
Ryan B. Mayfield ◽  
...  
Keyword(s):  
Larval Rearing ◽  
Green Sturgeon ◽  
Klamath River

Klamath River Water Quality and Acoustic Doppler Current Profiler Data from Link River Dam to Keno Dam, 2007

2008 ◽  
Author(s):  
Annett B. Sullivan ◽  
Michael L. Deas ◽  
Jessica Asbill ◽  
Julie D. Kirshtein ◽  
Kenna D. Butler ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Acoustic Doppler Current Profiler ◽  
River Water Quality ◽  
Klamath River ◽  
Current Profiler ◽  
Profiler Data

Reducing River Flows to Control a Parasitic Salmonid Disease in the Klamath River: Simulations Question the Efficacy of Desiccation as a Management Tool

2021 ◽  
Author(s):  
Aaron Turecek ◽  
Quinn Payton ◽  
Julie D. Alexander ◽  
Damon Goodman ◽  
Allen F. Evans ◽  
...  
Keyword(s):  
Management Tool ◽  
River Flows ◽  
Klamath River

Migration of green sturgeon, Acipenser medirostris, in the Sacramento River

2008 ◽  
Vol 84 (3) ◽  
pp. 245-258 ◽  
Author(s):  
Joseph C. Heublein ◽  
John T. Kelly ◽  
Carlos E. Crocker ◽  
A. Peter Klimley ◽  
Steven T. Lindley
Keyword(s):  
Sacramento River ◽  
Green Sturgeon ◽  
Acipenser Medirostris

A comparison of meristic and morphometric characters of green sturgeon Acipencer medirostris

2002 ◽  
Vol 18 (4-6) ◽  
pp. 234-239 ◽  
Author(s):  
J. A. North ◽  
R. A. Farr ◽  
P. Vescei
Keyword(s):  
Green Sturgeon ◽  
Morphometric Characters
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