scholarly journals Lake sturgeon Acipenser fulvescens and shovelnose sturgeon Scaphirhynchus platorynchus environmental life history revealed using pectoral fin-ray microchemistry: implications for interjurisdictional conservation through fishery closure zones

2016 ◽  
Vol 90 (2) ◽  
pp. 626-639 ◽  
Author(s):  
Q. E. Phelps ◽  
R. N. Hupfeld ◽  
G. W. Whitledge
Keyword(s):  
Life History ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Pectoral Fin ◽  
Shovelnose Sturgeon ◽  
Fin Ray ◽  
Scaphirhynchus Platorynchus ◽  
Fin Ray Microchemistry

Advances in Fisheries Bioengineering

2008 ◽  
Keyword(s):  
Swimming Speed ◽  
Critical Factor ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Mean Velocity ◽  
Shovelnose Sturgeon ◽  
Pectoral Fins ◽  
Fish Ladder ◽  
Juvenile Sturgeon ◽  
Sturgeon Species

<em>Abstract</em>.—Fish ladder designs that pass adult sturgeons are poorly studied. This is partly due to difficulties associated with obtaining and testing large adults. To learn about behavior and swimming of sturgeons in fish ladder environments, we observed juvenile lake sturgeon <em>Acipenser fulvescens </em>to determine the type of ladder opening that fish passed best. We also constructed a short fish ladder (6% slope) using the best opening type and determined the general usefulness of the ladder design to pass juvenile lake sturgeon, pallid sturgeon <em>Scaphirhynchus albus </em>and shovelnose sturgeon <EM>S</EM>. <em>platorynchus</em>. Lake sturgeon swam upstream through orifice and vertical openings better than through surface weir or weir and orifice openings. Because 37% of the fish hit the orifice when swimming upstream, and also, sturgeon could be damaged passing downstream through an orifice, we focused on testing a ladder design with vertical openings. A side-baffle ladder design that created vertical openings that alternated from side to side showed promise at passing the three species of sturgeons. All lake sturgeons (<EM>N </EM>= 15), most pallid sturgeons (12 of 22 fish, 55%), and 1 of 3 shovelnose sturgeons ascended the side-baffle design. Also, all sturgeon species moved safely downstream in the side-baffle ladder by passively drifting tail-first. Mean velocity in side-baffle openings was 60–75 cm/s, so sturgeons could use prolonged swimming speed to swim upstream. Vertical openings were wide enough for fish to partially erect their pectoral fins, likely a critical factor for maintaining balance. Our observations suggest that a ladder for adults should have vertical openings, enable fish to swim continuously and not stop at cross-channel barriers, have resting areas, enable fish to safely drift downstream, and enable fish to swim upstream using prolonged swim speed. The study of juvenile sturgeon behavior and swimming ability can contribute to developing a fish ladder for adults. This approach to fish ladder development can be used for other species with large adults.

Mark-Recapture Validation of Pectoral Fin Ray Age Estimation for Lake Sturgeon

2018 ◽  
Vol 38 (6) ◽  
pp. 1251-1257 ◽  
Author(s):  
Jan-Michael Hessenauer ◽  
Brad E. Utrup ◽  
Andrew S. Briggs ◽  
Todd C. Wills ◽  
Michael V. Thomas
Keyword(s):  
Age Estimation ◽  
Lake Sturgeon ◽  
Pectoral Fin ◽  
Mark Recapture ◽  
Fin Ray

scholarly journals Assessing the migratory histories, trophic positions, and conditions of lake sturgeon in the St. Croix and Mississippi Rivers using fin ray microchemistry, stable isotopes, and fatty acid profiles

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Jeffrey R. Ziegeweid ◽  
Michelle R. Bartsch ◽  
Lynn A. Bartsch ◽  
Steven J. Zigler ◽  
Robert J. Kennedy ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Mississippi River ◽  
Lake Sturgeon ◽  
Fish Length ◽  
Pectoral Fin ◽  
Food Web Structure ◽  
Fin Ray ◽  
Study Results ◽  
Fin Rays ◽  
Pectoral Fin Rays

Abstract Background Reproducing populations of invasive carps (Hypophthalmichthys spp.) could alter aquatic food webs and negatively affect native fishes in the Mississippi National River and Recreation Area (MISS) and the St. Croix National Scenic Riverway (SACN). However, proposed invasive carp barriers may also threaten populations of native migratory fishes by preventing movements of fish between rivers that are necessary for life history requirements. In this study, nonlethal chemical techniques were used to provide baseline data related to the condition, trophic position, and migratory histories of lake sturgeon (Acipenser fulvescens) captured in the Mississippi and St. Croix Rivers. Results Fish length and weight measurements and age estimates determined from pectoral fin rays demonstrated that lake sturgeon from the Mississippi River had greater lengths-at-age compared to sturgeon from the St. Croix River. However, length–weight relations were similar for sturgeon from the Mississippi and St. Croix Rivers. Lake sturgeon captured from different locations had distinguishable fatty acid signatures, and stable isotope analyses demonstrated that lake sturgeon from the Mississippi River generally feed at a higher trophic level than those in the St. Croix River. Strontium-to-calcium ratios (Sr:Ca) from fin ray cross sections indicated that sturgeon captured from the Mississippi River had higher Sr:Ca values than sturgeon captured from the St. Croix River, and natal origins and capture locations were not significantly different among sturgeon captured within individual rivers. Most sturgeon were captured in water with a similar Sr:Ca signature as their natal waters, indicating that there is some separation between populations of lake sturgeon in the St. Croix and Mississippi Rivers. However, Sr:Ca data indicated substantial variation in movement patterns among individual lake sturgeon, indicating that populations interact through migrations of individual fish between rivers. Conclusions Study results provide baseline condition and food web structure index data for assessing changes in lake sturgeon populations should invasive carps become established in these areas of the Mississippi and St. Croix Rivers. Controlled-exposure and telemetry studies would help verify and enhance the relations between Sr:Ca signatures in water and lake sturgeon pectoral fin rays to further assess mixing of sturgeons between rivers.

Lake sturgeon (Acipenser fulvescens) growth chronologies

1999 ◽  
Vol 56 (10) ◽  
pp. 1752-1756 ◽  
Author(s):  
Gregory T LeBreton ◽  
F William H. Beamish ◽  
Robert G Wallace
Keyword(s):  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Decision Criteria ◽  
Pectoral Fin ◽  
Extrinsic Factors ◽  
Fin Rays ◽  
Growth Variation ◽  
Pectoral Fin Rays

We used annual increments in the pectoral fin rays of lake sturgeon (Acipenser fulvescens) to assess growth synchrony. We based our decision criteria on correlation among individual chronologies developed from samples collected in the Saskatchewan River, Saskatchewan, and Lake St. Clair and the Mattagami River, Ontario. Initially, correlations among chronologies were not significant within these three populations. However, as mean ageing error was reduced, correlations among chronologies increased to significant levels in samples from the Saskatchewan River and Lake St. Clair. Correlations were not significant among consistently aged fish sampled from the Mattagami River. We conclude that interannual growth variation in lake sturgeon is influenced by population-wide extrinsic factors in some populations. Our results suggest that both growth synchrony and ageing error should be quantified during the construction of growth chronologies for all organisms.

Reproduction, early life history, and characteristics of the spawning grounds of the lake sturgeon (Acipenser fulvescens) in Des Prairies and L'Assomption rivers, near Montréal, Quebec

1992 ◽  
Vol 70 (9) ◽  
pp. 1681-1689 ◽  
Author(s):  
Michel LaHaye ◽  
Alain Branchaud ◽  
Marc Gendron ◽  
Richard Verdon ◽  
Réjean Fortin
Keyword(s):  
Life History ◽  
Water Temperature ◽  
River Water ◽  
Early Life ◽  
Early Life History ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Spawning Ground ◽  
Spawning Grounds ◽  
River Water Temperature

Spawning, early life history, and physical characteristics of lake sturgeon (Acipenser fulvescens) spawning grounds were compared between two rivers located in the Montréal region. The spawning grounds in Des Prairies River were enlarged in 1985, during the reconstruction of the Des Prairies power plant spillway. The L'Assomption River spawning ground has not been physically altered by human activities. In 1989, spawning occurred between May 14 and 27 in Des Prairies River (water temperature 11.6–15.4 °C) and between May 15 and 22 in L'Assomption River (water temperature 11–21.5 °C). On a given date, embryos were slightly more developed in L'Assomption River, where hatching began 3 days earlier than in Des Prairies River (26 vs. 29 May). The great similarity in the spawning and early development sequence suggests that spawners utilizing these two rivers cannot be differentiated on the basis of these biological characters. In 1990, larval emigration from the Des Prairies River spawning ground began on May 29, 11 days after peak spawning. The larvae drifted to the St. Lawrence River in June (peak on 16 June), at a mean length of approximately 20 mm. In both rivers the proportion of stations with eggs present tends to decrease as depth and current velocity increase. Egg deposition occurs on a wide variety of substrate types, ranging from fine- to medium-sized gravel to boulders. Although utilization varies with prevailing hydrological conditions, in 1990 the artificial spawning bed in Des Prairies River showed a high proportion of stations with eggs present.

Effect of Pectoral Fin Ray Removal on Station-Holding Ability of Shovelnose Sturgeon

2003 ◽  
Vol 23 (3) ◽  
pp. 742-747 ◽  
Author(s):  
Glenn R. Parsons ◽  
Jan Jeffrey Hoover ◽  
K. Jack Killgore
Keyword(s):  
Pectoral Fin ◽  
Shovelnose Sturgeon ◽  
Fin Ray

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.

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