Vital Statistics of a Population of Great Lakes Rainbow Trout (Salmo gairdneri) Characterized by an Extended Spawning Season

1970 ◽  
Vol 27 (3) ◽  
pp. 613-618 ◽  
Author(s):  
Douglas P. Dodge ◽  
Hugh R. MacCrimmon
Keyword(s):  
Life History ◽  
Rainbow Trout ◽  
Great Lakes ◽  
Sea Lamprey ◽  
Vital Statistics ◽  
Spawning Season ◽  
Lake Huron ◽  
Salmo Gairdneri ◽  
Class Structure ◽  
Adult Fish

Adult fish moved into Bothwell's Creek, Lake Huron, between October 29 and May 3. Run A (October 29–February 15) was composed of 640 fish, run B (February 16–May 3) of 610 fish. Run A spawned between December 29 and February 14 and left the river. Run B spawned between February 20 and April 30. Total lengths of males ranged from 31 to 80 cm, females from 21 to 90 cm. Fourteen categories of life history were identified within the population of which 99% had become smolts after 2 years of stream life. Fish of age 5 were dominant. Differences in age class structure and size of fish occurred between runs A and B. Sea lamprey scars were evident on 8.6% of fish, all over 46 cm in total length.

Life History and Timing of Migrations and Spawning Behavior of Rainbow Trout (Salmo gairdneri) Populations of the Great Lakes

1981 ◽  
Vol 38 (12) ◽  
pp. 1759-1771 ◽  
Author(s):  
R. M. Biette ◽  
D. P. Dodge ◽  
R. L. Hassinger ◽  
T. M. Stauffer
Keyword(s):  
Life History ◽  
Rainbow Trout ◽  
Great Lakes ◽  
Life Histories ◽  
Great Variability ◽  
Salmo Gairdneri ◽  
Spawning Behavior ◽  
Timing Of Migration ◽  
Innate Ability ◽  
Timing Of Spawning

Rainbow trout (Salmo gairdneri) populations of the Great Lakes showed a great variability in timing of spawning migrations and life histories. This variability was examined to determine if rainbow trout populations of the Great Lakes are comprised of discrete stocks. Differences in timing of migration and spawning indicated that at least one spawning population may be distinctive and that others may be in progressive stages towards emergence of discrete stocks. The innate ability of this species to adapt to different environmental conditions, together with its ability to 'home,' provide rainbow trout in the Great Lakes with the potential to develop discrete stocks. The management of this species that allows for the development of this potential is emphasized.Key words: rainbow trout. Great Lakes, stocks, migrations, spawning, life histories, homing

scholarly journals Early life history of triploid rainbow trout (Salmo gairdneri Richardson)

Aquaculture ◽  
1988 ◽  
Vol 71 (1-2) ◽  
pp. 107-118 ◽  
Author(s):  
A. Happe ◽  
Edwige Quillet ◽  
B. Chevassus
Keyword(s):  
Life History ◽  
Rainbow Trout ◽  
Early Life ◽  
Early Life History ◽  
Salmo Gairdneri ◽  
History Of

Production and Movement of Juvenile Rainbow Trout (Salmo gairdneri) in a Headwater of Bothwell's Creek, Georgian Bay, Canada

1974 ◽  
Vol 31 (1) ◽  
pp. 117-121 ◽  
Author(s):  
D. Ross Alexander ◽  
Hugh R. MacCrimmon
Keyword(s):  
Rainbow Trout ◽  
Great Lakes ◽  
Annual Production ◽  
Salmo Gairdneri ◽  
Ecological Disturbance ◽  
Georgian Bay ◽  
Juvenile Rainbow Trout ◽  
Total Annual Production ◽  
Calculated Ratio

Within the 21,500 m2 headwater, the standing population of juvenile rainbow trout reached a high of 7.05 g/m2 in October. Production was maximum during August at 1.77 g/m2. Total annual production is calculated at 284.5 kg (13.2 g/m2). Spring emigrants (no less than 4830 fish weighing 69 kg) were age I (91%) and age II. Minimum calculated ratio of production to yield as emigrants was 4.1:1. Comparatively few age 0 fish emigrated during summer. Because of their demonstrated capability to produce juveniles, sensitive headwaters must be preserved from ecological disturbance to assure self-perpetuating rainbow trout populations in the Great Lakes.

Explicit consideration of uncertainty in Great Lakes fisheries management: decision analysis of sea lamprey (Petromyzon marinus) control in the St. Marys River

2007 ◽  
Vol 64 (10) ◽  
pp. 1456-1468 ◽  
Author(s):  
Steven L Haeseker ◽  
Michael L Jones ◽  
Randall M Peterman ◽  
James R Bence ◽  
Wenjing Dai ◽  
...  
Keyword(s):  
Decision Analysis ◽  
Great Lakes ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Lake Huron ◽  
Management Decision ◽  
Sterile Male ◽  
Management Options ◽  
Explicit Consideration ◽  
Sterile Male Releases

We used decision analysis to assist the Great Lakes Fishery Commission (GLFC) with sea lamprey (Petromyzon marinus) control in the St. Marys River, which connects Lake Superior to Lake Huron and until recently has been a major source of sea lamprey infestation of Lake Huron. The process involved decision-makers, managers, and experts in an analysis of management options, objectives, and critical uncertainties affecting the expected performance of alternative choices. We developed quantitative assessments of uncertainty about sea lamprey demographics and about the implementation effectiveness of three pest control options: trapping adult lampreys, sterile male releases, and lampricide treatment. We used a stochastic simulation model to forecast future parasitic sea lamprey abundance in Lake Huron for 10 management options. Management options that included enhanced levels of trapping and sterile male releases exhibited the best performance for all measures. Our analysis substantially influenced the GLFC strategy for the St. Marys River, providing an example of how explicit consideration of uncertainty using decision analysis can influence fishery management decisions.

PARASITE FAUNA OF THE SEA LAMPREY (PETROMYZON MARINUS VON LINNÉ) IN THE GREAT LAKES REGION

1967 ◽  
Vol 45 (6) ◽  
pp. 1083-1092 ◽  
Author(s):  
K. A. Wilson ◽  
K. Ronald
Keyword(s):  
Great Lakes ◽  
Microscopic Examination ◽  
Parasite Species ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Parasite Fauna ◽  
Lake Huron ◽  
Great Lakes Region ◽  
Sea Lampreys ◽  
First Time

Seven hundred and fifteen adult sea lampreys (Petromyzon marinus von Linné) from four streams tributary to Lake Huron and five offshore samples from the Manitoulin Island – Bruce Peninsula area, were examined for parasites.Dissection and microscopic examination revealed the presence of eight parasite species. Cucullanus stelmioides Vessichelli, 1910 is recorded for the first time both as a parasite of P. marinus and from North American waters. Ergasilus caeruleus Wilson, 1911, Anodontoides ferussacianus Lea. 1834, Diplostomum huronense (La Rue 1927), Plagioporus lepomis Dobrovolny, 1939 are all recorded for the first time as parasites of P. marinus. Echinorhynchus salmonis Müller, 1784, Triaenophorus crassus Forel, 1868, and Proteocephalus sp. are redescribed as parasites of the sea lamprey.

Parasite Fauna of Kokanee Salmon (Oncorhynchus nerka) Introduced into Lake Huron

1974 ◽  
Vol 31 (11) ◽  
pp. 1818-1821 ◽  
Author(s):  
J. J. Collins ◽  
A. O. Dechtiar
Keyword(s):  
North America ◽  
Oncorhynchus Nerka ◽  
Petromyzon Marinus ◽  
Sea Lamprey ◽  
Parasite Fauna ◽  
Lake Huron ◽  
Adult Fish ◽  
Kokanee Salmon ◽  
The Pacific ◽  
High Incidence

In a 7-yr study, the most common parasites of kokanee salmon (Oncorhynchus nerka) introduced to Lake Huron were the acanthocephalans Metechinorhynchus salmonis (in 61% of 228 adult fish examined) and Acanthocephalus jacksoni (15%) and the nematode Cystidicola stigmatura (41%). These also occurred in fish species netted along with kokanee, but many common parasites of other salmonids in Lake Huron were not harbored by kokanee. In addition to evidence of attack by sea lamprey (Petromyzon marinus), 18 species of parasites were found, 13 of which had not been previously recorded for kokanee in the Pacific drainages of North America. The high incidence of M. salmonis and C. stigmatura indicates that amphipods are commonly ingested by kokanee.

Biological Criteria for Definition of Species and Distinct Intraspecific Populations of Anadromous Salmonids Under the U.S. Endangered Species Act of 1973

1981 ◽  
Vol 38 (12) ◽  
pp. 1626-1635 ◽  
Author(s):  
Fred M. Utter
Keyword(s):  
Life History ◽  
Rainbow Trout ◽  
Endangered Species ◽  
Genetic Data ◽  
Endangered Species Act ◽  
The United States ◽  
Salmo Gairdneri ◽  
Biological Species Concept ◽  
Isolated Populations ◽  
The U.S

The validity of most recognized species of salmonids under the biological species concept is supported by evidence from diverse sources. However, the specific status of a number of recently diverged populations remains uncertain. In the United States, it is particularly important to consider the possibility of unrecognized reproductively isolated populations for protection under the U.S. Endangered Species Act of 1973 (ESA).Innate life history differences among species as well as numerous uncertainties within species preclude the use of a generalized model based on homing as the sole or primary means of defining discrete population segments of anadromous salmonid species. A process involving successive samplings, analyses, and syntheses of data from populations of a particular area is suggested. A major requirement of this process is reliable genetic data. The capability for the detection of allelic proteins by electrophoretic methods has provided a major tool for identifying and measuring genetic differences among populations and species. These data are necessary, but often insufficient for identifying most population segments and must be complemented by other biological and life history data as well as by historical and geological information. Provisional classifications of threatened or endangered populations on the basis of incomplete data may be necessary in many instances, but final classifications should depend on complete sets of data.Transplanted and hatchery populations complicate the identification and management of anadromous salmonid populations under the ESA. Some evidence is cited that indicates a potential or actual adverse genetic effect of hatchery or transplanted fish on some native populations, and current studies designed to measure such effects are mentioned. The technical and economical feasibility for measuring these effects suggest that such measurements should be a requisite for new or extended transplantation and hatchery operations.Further data are needed to determine whether or not threatened or endangered species and populations can be artificially perpetuated and still retain the capability to adapt to wild environments upon reintroduction to native habitats. This capability apparently exists in some domesticated strains of rainbow trout (Salmo gairdneri). However, large differences exist in the intrinsic levels of genetic variation between most domesticated populations of rainbow trout and many threatened or endangered natural populations of salmonids.Key words: criteria, intraspecific, anadromous salmonid populations, genetic data

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