Comparative fecundity and egg survival of coho salmon (Oncorhynchus kisutch Walbaum) from lakes Ontario, Erie, and Michigan

1985 ◽  
Vol 63 (5) ◽  
pp. 1096-1100 ◽  
Author(s):  
P. F. Morrison ◽  
J. F. Leatherland ◽  
R. A. Sonstegard
Keyword(s):  
New York ◽  
Lake Erie ◽  
Lake Michigan ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Lake Ontario ◽  
Viral Disease ◽  
Fertilization Success ◽  
Egg Survival ◽  
Salmon River

Survival to hatch in 1982 of coho salmon (Oncorhynchus kisutch Walbaum) collected from two Lake Ontario stocks (Salmon River, New York, and Credit River, Ontario) and Lake Michigan and Lake Erie stocks in 1982 was 79, 86, 78 and 24%, respectively; eggs taken from smaller females (<2 kg) of the Lake Erie stock had a significantly lower survival (9%) than those of larger females (>2 kg). Poor fertilization success appeared to be the major cause of low survival to hatch of Lake Erie coho salmon eggs. There were no significant differences in egg size, embryo size, or development time to hatch, step E47, or first exogenous feeding in the four stocks studied, although the incidence of alevin deformity was significantly higher in the Lake Erie coho salmon than in the Lake Ontario or Lake Michigan stocks. Posthatch mortalities were low, except in the case of the Credit River (Lake Ontario) stock, which suffered an epizootic of a suspect viral disease that increased mortality 3 weeks after hatch.

Residues of DDT in Lake Trout (Salvelinus namaycush) and Coho Salmon (Oncorhynchus kisutch) from the Great Lakes

1974 ◽  
Vol 31 (2) ◽  
pp. 191-199 ◽  
Author(s):  
Robert E. Reinert ◽  
Harold L. Bergman
Keyword(s):  
Lake Erie ◽  
Lake Michigan ◽  
Lake Trout ◽  
Coho Salmon ◽  
Marked Decrease ◽  
Life Stage ◽  
Oncorhynchus Kisutch ◽  
Salvelinus Namaycush ◽  
Spawning Season ◽  
Spawning Run

Concentrations of DDT residues were higher in lake trout (Salvelinus namaycush) from southern Lake Michigan in 1966–70 (average 18.1 ppm in fish 558–684 mm long) than in lake trout of the same size-class from Lake Superior in 1968–69 (4.4 ppm), and higher in adult coho salmon (Oncorhynchus kisutch) from Lake Michigan in 1968–71 (averages for different year-classes, 9.9–14.0 ppm) than in those from Lake Erie in 1969 (2.2 ppm). Residues were significantly higher in lake trout from southern Lake Michigan than in those from the northern part of the lake. In lakes Michigan and Superior, the levels increased with length of fish and percentage oil. In Lake Michigan coho salmon, the residues remained nearly stable (2–4 ppm) from September of the 1st yr of lake residence through May or early June of the 2nd yr, but increased three to four times in the next 3 mo. Residues in Lake Erie coho salmon did not increase during this period, which preceded the spawning season. Although the concentrations of total residues in whole, maturing Lake Michigan coho salmon remained unchanged from August 1968 until near the end of the spawning season in January 1969, the residues were redistributed in the tissues of the spawning-run fish; concentrations in the loin and brain were markedly higher in January than in August. This relocation of DDT residues accompanied a marked decrease in the percentage of oil in the fish, from 13.2 in August to 2.8 in January. Concentrations of residues were relatively high in eggs of both lake trout (4.6 ppm) and coho salmon (7.4–10.2 ppm) from Lake Michigan. The percentage composition of the residues (p,p′DDE, o,p′/DDT, p,p′DDT, and p,p′DDT) did not differ significantly with life stage, size, age, or locality, or date of collection of lake trout or coho salmon.

scholarly journals Effect of Thiamine Status on Probability of Lake Ontario Chinook Salmon Spawning in the Upper or Lower Sections of Salmon River, New York

2009 ◽  
Vol 29 (4) ◽  
pp. 895-902 ◽  
Author(s):  
H. George Ketola ◽  
James H. Johnson ◽  
Jacques Rinchard ◽  
Francis J. Verdoliva ◽  
Mary E. Penney ◽  
...  
Keyword(s):  
New York ◽  
Chinook Salmon ◽  
Lake Ontario ◽  
Salmon River

scholarly journals Subglacial water-sheet floods, drumlins and ice-sheet lobes

1999 ◽  
Vol 45 (150) ◽  
pp. 201-213 ◽  
Author(s):  
E.M. Shoemaker
Keyword(s):  
New York ◽  
Lake Michigan ◽  
New York State ◽  
Ice Sheet ◽  
Lake Ontario ◽  
High Water ◽  
Green Bay ◽  
Subglacial Lake ◽  
Western Lake ◽  
Subglacial Lakes

AbstractThe effect of subglacial lakes upon ice-sheet topography and the velocity patterns of subglacial water-sheet floods is investigated. A subglacial lake in the combined Michigan–Green Bay basin, Great Lakes, North America, leads to: (1) an ice-sheet lobe in the lee of Lake Michigan; (2) a change in orientations of flood velocities across the site of a supraglacial trough aligned closely with Green Bay, in agreement with drumlin orientations; (3) low water velocities in the lee of Lake Michigan where drumlins are absent; and (4) drumlinization occurring in regions of predicted high water velocities. The extraordinary divergence of drumlin orientations near Lake Ontario is explained by the presence of subglacial lakes in the Ontario and Erie basins, along with ice-sheet displacements of up to 30 km in eastern Lake Ontario. The megagrooves on the islands in western Lake Erie are likely to be the product of the late stage of a water-sheet flood when outflow from eastern Lake Ontario was dammed by displaced ice and instead flowed westward along the Erie basin. The Finger Lakes of northern New York state, northeastern U.S.A., occur in a region of likely ice-sheet grounding where water sheets became channelized. Green Bay and Grand Traverse Bay are probably the products of erosion along paths of strongly convergent water-sheet flow.

Fecundity of Coho Salmon (Oncorhynchus kisutch) from the Great Lakes and a Comparison with Ocean Salmon

1976 ◽  
Vol 33 (5) ◽  
pp. 1150-1155 ◽  
Author(s):  
Thomas M. Stauffer
Keyword(s):  
Great Lakes ◽  
Early Life ◽  
First Generation ◽  
Lake Michigan ◽  
Coho Salmon ◽  
Pacific Salmon ◽  
Lake Superior ◽  
Oncorhynchus Kisutch ◽  
Early Life History ◽  
Freshwater Salmon

I measured fecundity of coho salmon (Oncorhynchus kisutch) that matured in the Great Lakes to make comparisons with Pacific Ocean coho salmon and among groups of Great Lakes salmon. Numbers of eggs produced (1600–3500) by Great Lakes salmon were comparable to production (1500–3300) by Pacific salmon of similar size. Average egg diameters of Lake Michigan (7.1–7.4 mm) and Pacific salmon (6.1–7.4 mm) were also comparable but Lake Superior eggs were smaller (5.1–5.4 mm). Fecundity of second generation freshwater salmon which originated from Lake Michigan eggs was similar to that of the first generation which originated from Pacific eggs because the average numbers (2938–3243) and diameters (7.1–7.4 mm) of eggs produced were about the same. On the average, Lake Michigan salmon contained more (2938) and larger (7.1-mm diam) eggs than did Lake Superior salmon (2150 and 5.1-mm diam) of the same year-class and early life history.

Overripening as the cause of low survival to hatch in Lake Erie coho salmon (Oncorhynchus kisutch) embryos

1996 ◽  
Vol 74 (5) ◽  
pp. 851-857 ◽  
Author(s):  
P. A. Flett ◽  
G. Van Der Kraak ◽  
K. R. Munkittrick ◽  
J. F. Leatherland
Keyword(s):  
Lake Erie ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Low Fertility ◽  
Genetic Origin ◽  
Salmon Stock ◽  
And Migration ◽  
Cross Fertilization ◽  
Egg Fertility ◽  
Poor Fertilization

We investigated the cause of the low survival to hatch of embryos of coho salmon (Oncorhynchus kisutch) from the Fairview, Pennsylvania, stock in Lake Erie. In 1988, survival to hatch of this stock was only 42%, whereas another Great Lakes coho salmon stock of similar genetic origin had an 84% survival to hatch. Laboratory cross-fertilization studies between the Fairview stock and a reference Lake Erie stock from Simcoe, Ontario, showed that eggs from the Fairview stock were the probable source of the low fertility. The presence of overripe eggs in Fairview females was associated with poor fertilization and low survival to hatch. Plasma gonadotropin II levels were similar in preovulatory females taken from the Fairview and Simcoe stocks, but testosterone and 17α, 20β-dihydroxy-4-pregnen-3-one levels were significantly lower in the Fairview females. Increasing the triiodo-L-thyronine (T3) content of the eggs by the administration of T3 to the preovulatory females did not enhance egg fertility. We propose that the low survival to hatch of the Fairview embryos is due to delayed oocyte maturation and ovulation and vent maturation, which may have been caused by exposure of the Fairview salmon to warmer water during the period of late ovarian maturation and migration.

scholarly journals Sperm characteristics and fertilization success of masculinized coho salmon (Oncorhynchus kisutch)

Aquaculture ◽  
2005 ◽  
Vol 249 (1-4) ◽  
pp. 459-468 ◽  
Author(s):  
J.L. Fitzpatrick ◽  
J.C. Henry ◽  
N.R. Liley ◽  
R.H. Devlin
Keyword(s):  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Fertilization Success ◽  
Sperm Characteristics

Phosphorus Enrichment, Silica Utilization, and Biogeochemical Silica Depletion in the Great Lakes

1986 ◽  
Vol 43 (2) ◽  
pp. 407-415 ◽  
Author(s):  
Claire L. Schelske ◽  
Eugene F. Stoermer ◽  
Gary L. Fahnenstiel ◽  
Mark Haibach
Keyword(s):  
Steady State ◽  
Great Lakes ◽  
Urban Population ◽  
Thermal Stratification ◽  
Lake Erie ◽  
Lake Michigan ◽  
Lake Ontario ◽  
Lake Huron ◽  
Phosphorus Enrichment

Our hypothesis that silica (Si) depletion in Lake Michigan and the severe Si depletion that characterizes the lower Great Lakes were induced by increased phosphorus (P) inputs was supported by bioassay experiments showing increased Si uptake by diatoms with relatively small P enrichments. We propose that severe Si depletion (Si concentrations being reduced to ≤0.39 mg SiO2∙L−1 prior to thermal stratification) results when P levels are increased to the extent that increased diatom production reduces Si concentrations to limiting levels during the thermally mixed period. Large P enrichments such as those that characterized the eastern and central basis of Lake Erie and Lake Ontario in the early 1970s are necessary to produce severe Si depletion. It is clear that severe Si depletion in the lower lakes was produced by P enrichment because inflowing waters from Lake Huron have smaller P concentrations and larger Si concentrations than the outflowing waters of either Lake Erie or Lake Ontario. Severe Si depletion probably began in the 1940s or 1950s as the result of increased P loads from expanded sewering of an increasing urban population and the introduction of phosphate detergents. The model proposed for biogeochemical Si depletion is consistent with previous findings of high rates of internal recycling because, under steady-state conditions for Si inputs, any increase in diatom production will produce an increase in permanent sedimentation of biogenic Si provided some fraction of the increased biogenic Si production is not recycled or unless there is a compensating increase in dissolution of diatoms.

Sign in / Sign up

Export Citation Format

Share Document