scholarly journals Movement of Lake Sturgeon, Acipenser fulvescens, in a Natural Reach of the Ottawa River

2003 ◽  
Vol 117 (4) ◽  
pp. 541 ◽  
Author(s):  
Tim Haxton
Keyword(s):  
Home Range ◽  
Water Depth ◽  
Radio Telemetry ◽  
Lake Sturgeon ◽  
Maximum Distance ◽  
Acipenser Fulvescens ◽  
High Fidelity ◽  
Ottawa River ◽  
River Reach

A radio-telemetry project was conducted on four Lake Sturgeon in a natural reach of the Ottawa River, Canada. The objective was to ascertain the extent of their movement within a natural river reach. Lake Sturgeon displayed high fidelity to a basin and did not move extensive distances. Maximum distance traveled between tracking locations was 10 km and mean home range was 1528 ha. Mean distance moved did not significantly differ between seasons. Mean water depth in which Lake Sturgeon were located was 3.5 m. Lake Sturgeon were not located within 52 km of the upstream dam.

Burbot: Ecology, Management, and Culture

2008 ◽  
Keyword(s):  
Home Range ◽  
Maximum Distance ◽  
Home Ranges ◽  
High Fidelity ◽  
Lota Lota ◽  
Acoustic Tags ◽  
The Mean ◽  
General Movement ◽  
Kootenai River ◽  
Do So

Abstract.—Adult burbot <em>Lota lota </em>from Koocanusa Reservoir, Montana, USA were surgically implanted with acoustic (<em>n </em>= 28) and combined radio/acoustic tags (<em>n </em>= 12) to quantify movements and home range. Fish were tagged from November 2003 to April 2004, and tracking efforts were conducted approximately weekly during daylight hours on Koocanusa Reservoir using a motor boat during the period of mid-December 2003 to July 2005, which spanned two burbot spawning seasons. Six (15%) tagged burbot were never relocated after release, and an additional seven (17.5%) of the tagged burbot either died or shed their tag within 60 d after release. We relocated 34 marked burbot (85%) on at least three occasions (mean = 10.0). Burbot frequently used the deepest portions of the reservoir, especially during the summer months. We estimated that the mean 50%, 75%, and 90% kernel home ranges were 14.6, 22.6 and 32.3 km<sup>2</sup>, respectively. We found no evidence that burbot home range differed within the 2 years of this study. Although we did observe burbot moving a maximum distance of up to 64.3 km, we were unable to discern any general movement patterns by month or capture location. Individual burbot tagged in this study had relatively high fidelity to the original capture side of the reservoir, and almost half of our marked burbot were never relocated on the opposite side of the remnant Kootenai River thalweg, and those that did cross the thalweg do so infrequently. One burbot was entrained through Libby Dam approximately 134–276 d after capture and tagging.

scholarly journals Lake Sturgeon, Acipenser fulvescens, Movements in Rainy Lake, Minnesota and Ontario

2006 ◽  
Vol 120 (1) ◽  
pp. 71 ◽  
Author(s):  
W. Eugene Adams ◽  
Larry W. Kallemeyn ◽  
David W. Willis
Keyword(s):  
Radio Telemetry ◽  
Geographic Location ◽  
Federal Agencies ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
The South ◽  
Spawning Activity ◽  
Seine River ◽  
High Utilization ◽  
East End

Rainy Lake, Minnesota-Ontario, contains a native population of Lake Sturgeon (Acipenser fulvescens) that has gone largely unstudied. The objective of this descriptive study was to summarize generalized Lake Sturgeon movement patterns through the use of biotelemetry. Telemetry data reinforced the high utilization of the Squirrel Falls geographic location by Lake Sturgeon, with 37% of the re-locations occurring in that area. Other spring aggregations occurred in areas associated with Kettle Falls, the Pipestone River, and the Rat River, which could indicate spawning activity. Movement of Lake Sturgeon between the Seine River and the South Arm of Rainy Lake indicates the likelihood of one integrated population on the east end of the South Arm. The lack of re-locations in the Seine River during the months of September and October may have been due to Lake Sturgeon moving into deeper water areas of the Seine River and out of the range of radio telemetry gear or simply moving back into the South Arm. Due to the movements between Minnesota and Ontario, coordination of management efforts among provincial, state, and federal agencies will be important.

La périodicité de la croissance chez la femelle de l'esturgeon jaune (Acipenser fulvescens) du fleuve Saint-Laurent est-elle reliée à la périodicité de la reproduction?

1992 ◽  
Vol 49 (7) ◽  
pp. 1336-1342 ◽  
Author(s):  
Sylvie Guénette ◽  
Daniel Goyette ◽  
Réjean Fortin ◽  
Jean Leclerc ◽  
Nelson Fournier ◽  
...  
Keyword(s):  
Cross Sections ◽  
Growth Patterns ◽  
The State ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Ottawa River ◽  
First Ray ◽  
The Mean ◽  
Narrow Annuli ◽  
St Lawrence River

Measurements of annual increments on cross-sections of the first ray of the pectoral fin of 125 St. Lawrence River female lake sturgeon (Acipenser fulvescens) aged 24 yr and older were used to test the correspondance between growth patterns at the margin of the sections and the state of maturity of the fish. For each of the 21 females aged 34 yr and older, and for the upper Ottawa River specimens presented by Roussow (1957. J. Fish. Res. Board Can. 14: 553–572), annual increments were treated as a temporal series and analysed with the contingency periodogram. The mean age at first spawning was determined using the age at the end of the first belt of crowded annuli, following Roussow. Only 3 of the 21 females aged 34 yr and older showed a typical succession of belts of large and narrow annuli. The most frequent periods were 5–11 yr, using the periodogram, as compared with 6–9 yr for Roussow' specimens. No significant correspondance was found between the pattern of the last five annual increments and the state of maturity. The mean age at first spawning, estimated at 19 yr by this technique, is lower than the mean age of sexual maturity determined for St. Lawrence River females based on the examination of the gonads (26 yr).

Effects of 3,3′,4,4′-tetrachlorobiphenyl on the dynamics of vitamin A in brook trout (Salvelinus fontinalis) and intestinal retinoid concentrations in lake sturgeon (Acipenser fulvescens)

1995 ◽  
Vol 52 (3) ◽  
pp. 512-520 ◽  
Author(s):  
Aristocle Ndayibagira ◽  
Marie-Josée Cloutier ◽  
Perry D. Anderson ◽  
Philip A. Spear
Keyword(s):  
Vitamin A ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Retinyl Palmitate ◽  
Lake Sturgeon ◽  
Contaminated Site ◽  
Acipenser Fulvescens ◽  
River Population ◽  
Ottawa River ◽  
St Lawrence River

A single i.p. injection of 5 μg 3,3′,4,4′-tetrachlorobiphenyl (TCBP)/g body mass in adult brook trout (Salvelinus fontinalis) resulted in decreased (p < 0.0001) growth rate despite pair feeding. Plasma retinol decreased (p < 0.0037). Intestinal retinyl palmitate (RP) and 3,4-dehydroretinyl palmitate (DRP) concentrations decreased in TCBP-injected males (RP, p < 0.0143; DRP, p < 0.0009), whereas retinoid levels did not decrease significantly in TCBP-injected females. The RP:DRP ratio in trout liver increased (p < 0.0001). These results suggested that DRP is more sensitive than RP to the effects of TCBP. No significant differences in ovarian retinoids occurred in post-spawning trout. Field validation of the effects on intestinal retinoids was conducted with lake sturgeon (Acipenser fulvescens) caught at a contaminated site on the Des Prairies River near Montréal (St. Lawrence River population) and reference sturgeon taken from a site near the origin of the Ottawa River in LaVerendrye Park. Intestinal retinoid concentrations were lower (RP, p < 0.0008; DRP, p < 0.0004) in the St. Lawrence River sturgeon. Our results demonstrate that a coplanar PCB is capable of altering vitamin A dynamics in several tissues and organs, and may cause a lowering of retinoids in the intestine.

Variation in lake sturgeon (Acipenser fulvescens) abundance and growth among river reaches in a large regulated river

2008 ◽  
Vol 65 (4) ◽  
pp. 645-657 ◽  
Author(s):  
Tim J Haxton ◽  
C Scott Findlay
Keyword(s):  
Power Management ◽  
Relative Abundance ◽  
Lake Sturgeon ◽  
Regulated River ◽  
Acipenser Fulvescens ◽  
Ottawa River ◽  
Water Power ◽  
Management Regime ◽  
Commercial Harvest ◽  
Historical Levels

Lake sturgeon (Acipenser fulvescens) stocks are well below historical levels across their natural range. In this study, we examine why lake sturgeon have not substantially recovered to historical levels in a large regulated river (Ottawa River, Canada). Three primary anthropogenic stressors have been identified as potentially limiting lake sturgeon populations in the Ottawa River: (i) commercial harvest, (ii) contaminants, and (iii) water power management. Hypotheses i and iii were tested by comparing lake sturgeon abundance and examining growth among reaches differing in level of commercial harvest and water management regime; hypothesis ii was tested by assessing contaminant loads in lake sturgeon and examining effects on growth and condition. Relative abundance, growth, mortality, and mean size of lake sturgeon did not differ among river reaches with (n = 6) and without (n = 3) a commercial harvest. Mercury was the only contaminant that was elevated. Neither growth nor condition showed any detectable relationship with mercury body burden. Relative abundance of lake sturgeon was greater in unimpounded than impounded reaches; additionally, there is evidence of faster growth in the impounded versus unimpounded reaches, suggesting density-dependent compensation. Water power management appears to be the primary factor affecting lake sturgeon in this river.

Genetic assessment of lake sturgeon (Acipenser fulvescens) population structure in the Ottawa River

2010 ◽  
Vol 90 (2) ◽  
pp. 183-195 ◽  
Author(s):  
Kristyne M. Wozney ◽  
Tim J. Haxton ◽  
Shawna Kjartanson ◽  
Chris C. Wilson
Keyword(s):  
Population Structure ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Ottawa River ◽  
Genetic Assessment

Movements and biological statistics of lake sturgeon (Acipenser fulvescens) populations from the St. Lawrence and Ottawa River system, Quebec

1993 ◽  
Vol 71 (3) ◽  
pp. 638-650 ◽  
Author(s):  
Réjean Fortin ◽  
Jean-René Mongeau ◽  
Gilles Desjardins ◽  
Pierre Dumont
Keyword(s):  
Total Mortality ◽  
River System ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Commercial Fishing ◽  
Commercial Catch ◽  
Saint Louis ◽  
Ottawa River ◽  
Biological Statistics ◽  
St Lawrence River

Our objective was to compare movements and biological statistics of lake sturgeon (Acipenser fulvescens) populations from two fluvial lakes on the St. Lawrence River, Lac Saint-Louis and Lac Saint-Pierre, which are main commercial fishing sectors, and from Lac des Deux Montagnes on the Ottawa River. Sturgeon can move freely among these three lakes. Lac des Deux Montagnes sturgeon differ from the other groups by their higher degree of sedentariness, slower growth, and lower condition factor. Lac Saint-Louis and Lac Saint-Pierre sturgeon are also sedentary, but some movement between the two lakes was observed. Sturgeon tagged on the Rivière des Prairies and Rivière L'Assomption spawning grounds, located in the central part of the study area, and also on pre- and post-spawning concentration sites, were recaptured throughout the St. Lawrence River, from Lac Saint-Louis to Lac Saint-Pierre. Length, weight, and age composition of the commercial catch, growth, and total mortality varied between Lac Saint-Louis and Lac Saint-Pierre. Higher commercial exploitation rates in the latter could be responsible for some differences. The management implications of these results are discussed.

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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