Reference intervals for select hematologic and plasma biochemical analytes of wild Lake Sturgeon (Acipenser fulvescens) from the St. Lawrence River in New York

2012 ◽  
Vol 42 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Louis DiVincenti ◽  
Jeff Wyatt ◽  
Heather Priest ◽  
Dawn Dittman ◽  
Rodger Klindt ◽  
...  
Keyword(s):  
New York ◽  
Reference Intervals ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
St Lawrence River

Comparison of lake sturgeon (Acipenser fulvescens), Stizostedion spp., Catostomus spp., Moxostoma spp., quillback (Carpiodes cyprinus), and mooneye (Hiodon tergisus) larval drift in Des Prairies River, Quebec

2001 ◽  
Vol 79 (8) ◽  
pp. 1472-1489 ◽  
Author(s):  
Julie D'Amours ◽  
Stéphanie Thibodeau ◽  
Réjean Fortin
Keyword(s):  
River System ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Larval Drift ◽  
Power House ◽  
Spawning Areas ◽  
Vertical Variations ◽  
Reverse Situation ◽  
The Right ◽  
St Lawrence River

Several fish species that spawn in lotic habitats have a larval-drift phase which is a major determinant of their reproductive success. The main objective of this study was to compare seasonal, diel, longitudinal, transverse, and vertical variations in rates of lake sturgeon (Acipenser fulvescens), Stizostedion spp., Catostomus spp., Moxostoma spp., quillback (Carpiodes cyprinus), and mooneye (Hiodon tergisus) larval drift in Des Prairies River (DPR) near Montreal (Quebec), which is one of the major lotic spawning habitats of the St. Lawrence River system. Larval sampling was conducted in the spring of 1994 and 1995 for the six taxa, and on a more restricted basis for lake sturgeon in 1996–1998, using drift nets set at several transects, stations, depths, and periods of the day, along a 19 km long section of river beginning ca. 2 km downstream from the DPR power house. For all taxa except lake sturgeon, peak larval drift occurred ca. 1 week earlier in 1995 than in 1994. The sequence was very similar between years, beginning with Stizostedion spp., followed by Catostomus spp., then lake sturgeon, quillback, and mooneye drifting simultaneously, and finally Moxostoma spp. Generally, for all taxa except quillback, whose multimodal drift pattern suggests intermittent, prolonged spawning, larval-drift profiles showed one major seasonal mode, which was observed simultaneously at all transects. For all taxa except quillback, drift rates peaked between 21:00 and 03:00 and were minimal during daylight hours. Lake sturgeon and Stizostedion spp. larval drift rates decreased radically from the most upstream to the most downstream transect, suggesting that both taxa spawn mostly in the vicinity of the DPR power house. More studies are required to explain this longitudinal decline in drift rates, particularly for lake sturgeon. The other taxa showed longitudinal variation in larval drift rates, suggesting that they spawn near the DPR power house and (or) in the Île de Pierre Rapids, ca. 12 km downstream. At all transects, larval drift rates for the six taxa were generally higher in the right half (Montreal) of the river, suggesting that eggs are deposited mostly in this part of the river at the two major spawning areas and that larvae tend to remain in the same general corridors during downstream migration. For all taxa, though to a lesser extent for lake sturgeon, nocturnal drift rates tend to be higher near the surface than at mid-depth and near the bottom, the reverse situation being observed for diurnal drift rates.

Efficacy of Iodine for Disinfection of Lake Sturgeon Eggs from the St. Lawrence River, New York

2014 ◽  
Vol 77 (1) ◽  
pp. 82-89 ◽  
Author(s):  
Marc Chalupnicki ◽  
Dawn Dittman ◽  
Clifford E. Starliper ◽  
Deborah D. Iwanowicz
Keyword(s):  
New York ◽  
Lake Sturgeon ◽  
St Lawrence River

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.

Retinoic acid hydroxylation and teratogenesis in lake sturgeon (Acipenser fulvescens) from the St. Lawrence River and Abitibi region, Quebec

1999 ◽  
Vol 56 (8) ◽  
pp. 1428-1436 ◽  
Author(s):  
Christian Doyon ◽  
Réjean Fortin ◽  
Philip A Spear
Keyword(s):  
Retinoic Acid ◽  
Active Form ◽  
Liver Microsomes ◽  
Gonadal Development ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Liver Sample ◽  
Cytochrome P 450 ◽  
St Lawrence River

All-trans-retinoic acid (RA) is an extremely active form of vitamin A; however, excessive or insufficient concentrations elicit anomalies including those associated with limb and craniofacial development. Lake sturgeon (Acipenser fulvescens) from the St. Lawrence River and tributaries were estimated to have a 2.9% incidence of fin and craniofacial malformations. Among larvae raised in artificial streams, a greater incidence of fin malformations (6.3%; p < 0.001) occurred in St. Lawrence River sturgeon compared with larvae from the Abitibi region. To test the hypothesis that the differences in rate of malformations may be associated with metabolic imbalances of RA, cytochrome P-450 dependent conversion to 4-hydroxyretinoic acid (4-OH-RA) was investigated. Optimal assay conditions are described for in vitro 4-OH-RA production in liver microsomes. Enzyme activity tended to decrease with increasing age and gonadal development in fish collected from Abitibi, but no statistically significant effects of sex, age, length, or gonadal development were discerned. The rate of 4-OH-RA formation was 3.5-fold greater (p < 0.0001) in the St. Lawrence sturgeon while the concentrations of cytochrome P-450 inducing PCBs (expressed as dioxin toxic equivalents) were 20-fold greater in a composite liver sample of the St. Lawrence sturgeon. Liver retinoid concentrations were negatively correlated (p < 0.0001) with RA hydroxylation rate. These results are consistent with the possibility that cytochrome P-450 dependent RA metabolism increased by chemical contaminants is associated with developmental anomalies in the St. Lawrence sturgeon.

Mitochondrial DNA Variation in Lake Sturgeon (Acipenser fulvescens) from the St. Lawrence River and James Bay Drainage Basins in Quebec, Canada

1993 ◽  
Vol 50 (3) ◽  
pp. 659-664 ◽  
Author(s):  
S. Guénette ◽  
R. Fortin ◽  
E. Rassart
Keyword(s):  
Mitochondrial Dna ◽  
Drainage Basin ◽  
Restriction Enzymes ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
James Bay ◽  
Drainage Basins ◽  
Dna Variation ◽  
Genotype 2 ◽  
St Lawrence River

Restriction fragment length pattern analysis of mitochondrial DNA (mtDNA) was used to assess genetic differentiation in sympatric lake sturgeon (Acipenser fulvescens) from the St. Lawrence River drainage basin (St. Lawrence and Ottawa rivers and Lac des Deux Montagnes) and in sturgeon from the Waswanipi River (James Bay drainage basin). Using 14 restriction enzymes on mtDNA from 82 specimens, the genetic divergence was relatively low (d = 0.219–0.744%), as only three genotypes were found. Genotype 1 is present at all sites whereas genotype 2 is present only in Lac des Deux Montagnes and the Ottawa and Waswanipi rivers. The St. Lawrence River sturgeon form a homogeneous genotypic group that was not found significantly different from sturgeon from Lac des Deux Montagnes. The genetic heterogeneity seemed higher in the James Bay drainage population than in the St. Lawrence drainage populations that probably have been more significantly influenced by overfishing and man-made habitat changes.

Growth and feeding dynamics of lake sturgeon, Acipenser fulvescens, in Oneida Lake, New York: results from the first five years of a restoration program

2002 ◽  
Vol 18 (4-6) ◽  
pp. 439-443 ◽  
Author(s):  
J. R. Jackson ◽  
A. J. VanDeValk ◽  
T. E. Brooking ◽  
O. A. vanKeeken ◽  
L. G. Rudstam
Keyword(s):  
New York ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Oneida Lake

Climatic and hydrological determinants of year-class strength of St. Lawrence River lake sturgeon (Acipenser fulvescens)

1997 ◽  
Vol 54 (4) ◽  
pp. 774-780 ◽  
Author(s):  
P Nilo ◽  
P Dumont ◽  
R Fortin
Keyword(s):  
River Water ◽  
Age Structure ◽  
Lake Sturgeon ◽  
Acipenser Fulvescens ◽  
Exogenous Feeding ◽  
Water Flows ◽  
Daily Rate ◽  
Rate Of Increase ◽  
Class Strength ◽  
St Lawrence River

From 1991 to 1993, juvenile lake sturgeon (Acipenser fulvescens), mostly aged between 1 + and 12 + , were sampled with experimental gill nets in the St. Lawrence River and in two of its major tributaries (Des Prairies and l'Assomption rivers) to determine population age structure and year-class strength. A ratio of 1:7 was observed between the weakest (1980) and the strongest (1989) year-classes. Positive, significant correlations were observed between year-class strength and daily rate of increase in St. Lawrence River water temperatures in May and June, and mean June water flows in the Des Prairies River (the major spawning tributary in the system). The results suggest that year-class strength is determined in the first few months of life and that climatic and hydrological conditions in June, during which larvae drift from the spawning grounds and exogenous feeding begins, are critical determinants of year-class strength in St. Lawrence River lake sturgeon.

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