A Portable Freshwater Closed‐System Fish Egg Incubation System

Sutherland, Jenny L.; Manny, Bruce A.; Kennedy, George C.; Roseman, Edward F.; Allen, J.; Black, M. Glen

doi:10.1080/15222055.2014.933751

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…A subset of Lake Sturgeon eggs from each egg mat was selected at random and reared (Sutherland et al. ) until the yolk sac was absorbed to allow for DNA extraction.…”

Section: Methodsmentioning

confidence: 99%

Egg and Larval Collection Methods Affect Spawning Adult Numbers Inferred by Pedigree Analysis

Hunter

Roseman

Sard

et al. 2020

N American J Fish Manag

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Analytical methods that incorporate genetic data are increasingly used in monitoring and assessment programs for important rate functions of fish populations (e.g., recruitment). Because gear types vary in efficiencies and effective sampling areas, results from genetic-based assessments likely differ depending on the sampling gear used to collect genotyped individuals; consequently, management decisions may also be affected by sampling gear. In this study, genetic pedigree analysis conducted on egg and larval Lake Sturgeon Acipenser fulvescens collected from the St. Clair-Detroit River system using three gear types was used to estimate and evaluate gear-specific differences in the number of spawning adults that produced the eggs and larvae sampled (N s ), the effective number of breeding adults (N b ), and individual reproductive success. Combined across locations and sampling years, pooled estimates were 330 (N s ; point estimate) and 317 (N b ; 95% CI = 271-372). Mean reproductive success was 4.35 with a variance of 5.33 individuals/spawner. Mean ± SE estimated numbers of unique parents per genotyped egg or larva (i.e., adult detection rate) from 2015 samples were 1.140 ± 0.003 for vertically stratified conical nets, 0.836 ± 0.002 for D-frame nets, and 0.870 ± 0.002 for egg mats. Using samples from 2016, adult detection rates were 0.823 ± 0.001 for D-frame nets and 0.708 ± 0.001 for egg mat collections. Coancestry values were negatively correlated with adult detection rate. Although genetic pedigree analyses can improve the understanding of recruitment in fish populations, this study demonstrates that estimates from genetic analyses can vary with the targeted life stage (a biologically informative

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“…A subset of Lake Sturgeon eggs from each egg mat was selected at random and reared (Sutherland et al. ) until the yolk sac was absorbed to allow for DNA extraction.…”

Section: Methodsmentioning

confidence: 99%

Egg and Larval Collection Methods Affect Spawning Adult Numbers Inferred by Pedigree Analysis

Hunter

Roseman

Sard

et al. 2020

N American J Fish Manag

Self Cite

View full text Add to dashboard Cite

show abstract

“…Subsamples of eggs were stored in river water for transport back to the laboratory, where they were reared in accordance with established protocols (Sutherland et al. ). Identification of larvae hatched from eggs was used to verify field classifications via descriptions provided by Auer ().…”

Section: Methodsmentioning

confidence: 99%

“…Eggs were removed from the mats with forceps, counted, and classified in the field based on size, color, transparency, and oil globule position. Subsamples of eggs were stored in river water for transport back to the laboratory, where they were reared in accordance with established protocols (Sutherland et al 2014). Identification of larvae hatched from eggs was used to verify field classifications via descriptions provided by Auer (1982).…”

Section: Data Collectionmentioning

confidence: 99%

Lake Sturgeon, Lake Whitefish, and Walleye Egg Deposition Patterns with Response to Fish Spawning Substrate Restoration in the St. Clair–Detroit River System

et al. 2018

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Egg deposition and use of restored spawning substrates by lithophilic fishes (e.g., Lake Sturgeon Acipenser fulvescens, Lake Whitefish Coregonus clupeaformis, and Walleye Sander vitreus) were assessed throughout the St. Clair–Detroit River system from 2005 to 2016. Bayesian models were used to quantify egg abundance and presence/absence relative to site‐specific variables (e.g., depth, velocity, and artificial spawning reef presence) and temperature to evaluate fish use of restored artificial spawning reefs and assess patterns in egg deposition. Lake Whitefish and Walleye egg abundance, probability of detection, and probability of occupancy were assessed with detection‐adjusted methods; Lake Sturgeon egg abundance and probability of occurrence were assessed using delta‐lognormal methods. The models indicated that the probability of Walleye eggs occupying a site increased with water velocity and that the rate of increase decreased with depth, whereas Lake Whitefish egg occupancy was not correlated with any of the attributes considered. Egg deposition by Lake Whitefish and Walleyes was greater at sites with high water velocities and was lower over artificial spawning reefs. Lake Sturgeon eggs were collected least frequently but were more likely to be collected over artificial spawning reefs and in greater abundances than elsewhere. Detection‐adjusted egg abundances were not greater over artificial spawning reefs, indicating that these projects may not directly benefit spawning Walleyes and Lake Whitefish. However, 98% of the Lake Sturgeon eggs observed were collected over artificial spawning reefs, supporting the hypothesis that the reefs provided spawning sites for Lake Sturgeon and could mitigate historic losses of Lake Sturgeon spawning habitat.

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Lake sturgeon (Acipenser fulvescens) spawn in the St. Marys River Rapids, Michigan

Roseman

Adams

DeBruyne

et al. 2020

Journal of Great Lakes Research

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A Portable Freshwater Closed‐System Fish Egg Incubation System

Cited by 4 publications

References 17 publications

Egg and Larval Collection Methods Affect Spawning Adult Numbers Inferred by Pedigree Analysis

Egg and Larval Collection Methods Affect Spawning Adult Numbers Inferred by Pedigree Analysis

Lake Sturgeon, Lake Whitefish, and Walleye Egg Deposition Patterns with Response to Fish Spawning Substrate Restoration in the St. Clair–Detroit River System

Lake sturgeon (Acipenser fulvescens) spawn in the St. Marys River Rapids, Michigan

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