ArticleProceedings. Biological sciences2016
Effective number of breeders, effective population size and their relationship with census size in an iteroparous species, Salvelinus fontinalis.
Article in Proceedings. Biological sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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21 citing papers in PubMed.
- Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework.Conservation biology : the journal of the Society for Conservation Biology · 2026Article
- Comparing the genomic inbreeding of an isolated rhesus macaque study population to wild populations.bioRxiv : the preprint server for biology · 2026Article
- Translocated populations are genetically similar to natural populations and populations resulting from natural colonizations.PloS one · 2026Article
- MaxTemp: A Method to Maximise Precision of the Temporal Method for Estimating NMolecular ecology resources · 2025Article
- The Potential Role of Haploblocks in the Persistence of Small, Isolated Populations of Brook Trout (Ecology and evolution · 2025Article
- Temporal Variability in Effective Size (Molecular ecology resources · 2025Article
- Parallel genetic adaptation amid a background of changing effective population sizes in divergent yellow perch (Proceedings. Biological sciences · 2025Article
- Population genomics of eastern oysters, Crassostrea virginica, in a well-mixed estuarine system: advancement and implications for restoration strategies.BMC genomics · 2024Article
- Estimates of Effective Number of Breeders Identify Drivers of Decline in Mid-Atlantic Brook Trout Populations.Evolutionary applications · 2024Article
- TheEvolutionary applications · 2024Article
- Evaluating the utility of effective breeding size estimates for monitoring sea lamprey spawning abundance.Ecology and evolution · 2023Article
- Genetic structure and relatedness of juvenile sicklefin lemon shark (Negaprion acutidens) at Dongsha Island.Scientific reports · 2023Article
- Demographic resilience of brook trout populations subjected to experimental size-selective harvesting.Evolutionary applications · 2022Article
- Population genomic monitoring provides insight into conservation status but no correlation with demographic estimates of extinction risk in a threatened trout.Evolutionary applications · 2022Article
- Can effective population size estimates be used to monitor population trends of woodland bats? A case study ofEcology and evolution · 2021Article
- Limited hatchery introgression into wild brook trout (Evolutionary applications · 2018Article
- Genomic analyses of Northern snakehead (PeerJ · 2018Article
- Genetic substructure and admixture as important factors in linkage disequilibrium-based estimation of effective number of breeders in recovering wildlife populations.Ecology and evolution · 2017Article
- Reliable effective number of breeders/adult census size ratios in seasonal-breeding species: Opportunity for integrative demographic inferences based on capture-mark-recapture data and multilocus genotypes.Ecology and evolution · 2017Article
- A critical assessment of estimating census population size from genetic population size (or vice versa) in three fishes.Evolutionary applications · 2017Article
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7 authors.
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Abstract
The relationship between the effective number of breeders (Nb) and the generational effective size (Ne) has rarely been examined empirically in species with overlapping generations and iteroparity. Based on a suite of 11 microsatellite markers, we examine the relationship between Nb, Ne and census population size (Nc) in 14 brook trout (Salvelinus fontinalis) populations inhabiting 12 small streams in Nova Scotia and sampled at least twice between 2009 and 2015. Unbiased estimates of Nb obtained with individuals of a single cohort, adjusted on the basis of age at first maturation (α) and adult lifespan (AL), were from 1.66 to 0.24 times the average estimates of Ne obtained with random samples of individuals of mixed ages (i.e. [Formula: see text]). In turn, these differences led to adjusted Ne estimates that were from nearly five to 0.7 times the estimates derived from mixed-aged individuals. These differences translate into the same range of variation in the ratio of effective to census population size [Formula: see text] within populations. Adopting [Formula: see text] as the more precise and unbiased estimates, we found that these brook trout populations differ markedly in their effective to census population sizes (range approx. 0.3 to approx. 0.01). Using AgeNe, we then showed that the variance in reproductive success or reproductive skew varied among populations by a factor of 40, from Vk/k ≈ 5 to 200. These results suggest wide differences in population dynamics, probably resulting from differences in productivity affecting the intensity of competition for access to mates or redds, and thus reproductive skew. Understanding the relationship between Ne, Nb and Nc, and how these relate to population dynamics and fluctuations in population size, are important for the design of robust conservation strategies in small populations with overlapping generations and iteroparity.
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