Cohort-specific estimates of first-year survival are positively associated with size at stocking for lake sturgeon Acipenser fulvescens (Rafinesque 1817) stocked in Black Lake, Michigan, USA

2017 ◽  
Vol 33 (5) ◽  
pp. 892-897 ◽  
Author(s):  
E. A. Baker ◽  
K. T. Scribner
Keyword(s):  
Lake Michigan ◽  
Lake Sturgeon ◽  
First Year ◽  
Acipenser Fulvescens

Adult lake sturgeon ( Acipenser fulvescens Rafinesque, 1817) occurrence in the Muskegon River system, a Lake Michigan drowned river mouth, USA

2020 ◽  
Vol 36 (5) ◽  
pp. 547-558
Author(s):  
Brandon S. Harris ◽  
Carl R. Ruetz ◽  
Travis J. Ellens ◽  
Anthony D. Weinke ◽  
Bopaiah A. Biddanda
Keyword(s):  
Lake Michigan ◽  
River Mouth ◽  
River System ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
System A

scholarly journals Effects of temperature, dissolved oxygen, and substrate on the development of metabolic phenotypes in age-0 lake sturgeon (Acipenser fulvescens): implications for overwintering survival

2019 ◽  
Vol 76 (9) ◽  
pp. 1596-1607 ◽  
Author(s):  
Gwangseok R. Yoon ◽  
David Deslauriers ◽  
Eva C. Enders ◽  
Jason R. Treberg ◽  
W. Gary Anderson
Keyword(s):  
Dissolved Oxygen ◽  
Metabolic Rate ◽  
Lake Sturgeon ◽  
Hepatosomatic Index ◽  
First Year ◽  
Acipenser Fulvescens ◽  
Differential Survival ◽  
Rearing Environment ◽  
Metabolic Phenotypes ◽  
The Impact

The impact of early rearing environment on phenotypic development in teleosts has been reasonably well-documented, but only recently has attention been paid to sturgeon raised for conservation purposes. In the present study, we hypothesized that rearing environment will result in the development of distinct metabolic phenotypes in age-0 lake sturgeon (Acipenser fulvescens) and that these phenotypes will drive differential survival rates during a simulated overwintering event. Lake sturgeon gametes were fertilized and raised in one of three different environments: 16 °C + 100% dissolved oxygen (DO), 14 °C + 100% DO, and 16 °C + 80% DO, each with or without substrate. We measured standard metabolic rate, forced maximum metabolic rate, metabolic scope, energy density, hepatosomatic index, Fulton’s condition factor, and enzyme activities associated with ATP production. Our results suggest that subtle changes in abiotic environments during early life history result in the development of distinct metabolic phenotypes during the first year of life. These have important implications for survival of age-0 lake sturgeon when stocked in the fall of their first year.

Characteristics of lake sturgeon Acipenser fulvescens Rafinesque, 1817 in a tributary of Lake Michigan, USA: Status of the Muskegon River population

2017 ◽  
Vol 33 (3) ◽  
pp. 338-346 ◽  
Author(s):  
B. S. Harris ◽  
C. R. Ruetz ◽  
A. C. Wieten ◽  
M. E. Altenritter ◽  
K. M. Smith
Keyword(s):  
Lake Michigan ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
River Population

Big Fish Stories: Analysis of Historical Newspaper Data on Size of Lake Sturgeon (Acipenser fulvescens) in the Lake Michigan Basin

2015 ◽  
Vol 42 (1) ◽  
pp. 26-39
Author(s):  
PHILIP COCHRAN
Keyword(s):  
Lake Michigan ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Michigan Basin ◽  
Large Fish ◽  
Large Lake ◽  
Data Set ◽  
Large Sample ◽  
The Mean ◽  
Newspaper Data

ABSTRACT Old newspapers (1850–1915) in the Lake Michigan basin were surveyed for reports of large lake sturgeon (≥ 100 pounds = 45.4 kg). Records of large fish were obtained from throughout the basin. To assess the accuracy of reported measurements, reported weights associated with reported lengths were compared to weights predicted by a weight-length regression developed for a large sample of fish from Lake Winnebago. Although there were a few obvious or likely outliers in the historical Lake Michigan data set, reported and predicted weights were not significantly different. Moreover, although the mean magnitude of deviations between reported and predicted weights, expressed as a proportion of predicted weight, was substantial, it was comparable to natural variability among lake sturgeon due to the effects of differences between sexes, locations, times of year, and reproductive status.

scholarly journals Response in Growth, Scute Development, and Whole-Body Ion Composition of Acipenser fulvescens Reared in Water of Differing Chemistries

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1419
Author(s):  
Janet Genz ◽  
Rachael Hicks
Keyword(s):  
River Water ◽  
Growth And Development ◽  
Lake Sturgeon ◽  
Whole Body ◽  
Acipenser Fulvescens ◽  
Water Type ◽  
Ion Composition ◽  
Ion Concentrations ◽  
Before And After ◽  
Yolk Absorption

In fishes, environmental ion availability can have substantial effects on growth and development. This study examined the development of Lake Sturgeon in response to the varying environmental ion availability that they experience as part of a conservation stocking program. We reared sturgeon in natural water from the Coosa River, which had higher concentrations of Mg2+, Na+, and Zn2+ than standard hatchery conditions, while [Ca2+] at the Warm Springs National Fish Hatchery was 2× higher than in the Coosa River. Eggs were hatched in each water type and the larvae were sampled at time points before and after yolk absorption during the first 8 weeks of development. Total length and weight in WSNFH larvae were significantly higher than larvae in Coosa River water starting at 8 dph, indicating that growth was dependent on the different environmental ion levels. Concentrations of the ions of interest were also determined for whole-body acid digests of the exposed Lake Sturgeon. We found that Lake Sturgeon reared in Coosa River water had significantly higher magnesium and zinc than Lake Sturgeon reared in WSNFH water (p < 0.05), while calcium was significantly higher in WSNFH than Coosa River water. This difference shows that different environmental ion concentrations also impact the overall development of larval Lake Sturgeon.

Seasonal Variation in Plasma Nonesterified Fatty Acids of Lake Sturgeon (Acipenser fulvescens) in the Vicinity of Hydroelectric Facilities

1993 ◽  
Vol 50 (11) ◽  
pp. 2440-2447 ◽  
Author(s):  
R. S. McKinley ◽  
T. D. Singer ◽  
J. S. Ballantyne ◽  
G. Power
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Total Plasma ◽  
Nefa Concentration ◽  
Plasma Nefa ◽  
Nonesterified Fatty Acids ◽  
Plasma Nefa Concentration ◽  
Fatty Acid Species

To establish the effects of hydroelectric generation on the health of lake sturgeon (Acipenser fulvescens), seasonal variations in plasma nonesterified fatty acids (NEFAs) upstream and downstream from hydroelectric stations were measured over a 2-yr period. Plasma NEFA profiles were also compared up- and downstream of the stations for differences in utilization of individual NEFA species as substrates for lipid oxidation. Significantly higher levels of total plasma NEFA were found in lake sturgeon upstream (2355 ± 395.9 nmol/mL) compared with those downstream (798 ± 133.5 nmol/mL) of the generating stations during the spring. The NEFA profiles for several key fatty acid species differed significantly among seasons up- and downstream of the facilities. In particular, during spring and summer, the levels of oleic acid (18:1n9) were highest upstream of the stations and levels of a polyunsaturated fatty acid, docosahexaenoic acid (22:6n3), were higher below rather than above the stations. The differences in plasma NEFA concentration may be attributed to altered nutritional status due to the varying flow regime located downstream of the hydroelectric stations.

Environmental and lunar cues are predictive of the timing of river entry and spawning-site arrival in lake sturgeon Acipenser fulvescens

2012 ◽  
Vol 81 (1) ◽  
pp. 35-53 ◽  
Author(s):  
P. S. Forsythe ◽  
K. T. Scribner ◽  
J. A. Crossman ◽  
A. Ragavendran ◽  
E. A. Baker ◽  
...  
Keyword(s):  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Spawning Site
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