Evaluating the utility of effective breeding size estimates for monitoring sea lamprey spawning abundance

Ellen M. Weise; Kim T Scribner; Olivia Boeberitz; Gale Bravener; Nicholas S. Johnson; John D Robinson

doi:10.1002/ece3.10519

Evaluating the utility of effective breeding size estimates for monitoring sea lamprey spawning abundance

Ecology and Evolution

By: Ellen M. Weise, Kim T Scribner, Olivia Boeberitz, Gale Bravener, Nicholas S. Johnson, and John D Robinson

https://doi.org/10.1002/ece3.10519

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Abstract

Sea lamprey (Petromyzon marinus) is an invasive species that is a significant source of mortality for populations of valued fish species across the North American Great Lakes. Large annual control programs are needed to reduce the species' impacts; however, the number of successfully spawning adults cannot currently be accurately assessed. In this study, effective breeding size (N_b) and the minimum number of spawning adults (N_s) were estimated for larval cohorts from 17 tributaries across all five Great Lakes using single nucleotide polymorphisms (SNP) genotyped via RAD-capture sequencing. Reconstructed larval pedigrees showed substantial variability in the size and number of full- and half-sibling groups, N_b (<1–367), and N_s (5–545) among streams. Generalized linear models examining the effects of stream environmental characteristics and aspects of sampling regimes on N_b and N_s estimates identified sample size, the number of sampling sites, and drainage area as important factors predicting N_b and N_s. Correlations between N_b, N_s, and capture–mark–recapture estimates of adult census size (N_c) increased when streams with small sample sizes (n < 50) were removed. Results collectively indicate that parameters estimated from genetic data can provide valuable information on spawning adults in a river system, especially if sampling regimes are standardized and physical stream covariates are included.

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Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Evaluating the utility of effective breeding size estimates for monitoring sea lamprey spawning abundance
Series title	Ecology and Evolution
DOI	10.1002/ece3.10519
Volume	13
Issue	9
Year Published	2023
Language	English
Publisher	Wiley
Contributing office(s)	Great Lakes Science Center
Description	e10519, 15 p.
Other Geospatial	Great Lake System
Google Analytic Metrics	Metrics page