Distinct patterns of inheritance shape life-history traits in steelhead trout

Life-history variation is the raw material of adaptation, and understanding its genetic and environmental underpinning is key to designing effective conservation strategies. We used large-scale genetic pedigree reconstruction of anadromous steelhead trout (Oncorhynchus mykiss) from the Russian River, California, USA to elucidate sex-specific patterns of life-history traits and their heritability. SNP data from adults returning from sea over a 14-year period were used to identify 13,474 parent-offspring trios. These pedigrees were used to determine age structure, size distributions, and family sizes for these fish, as well as to estimate the heritability of two key life-history traits, spawn date and age at maturity (first reproduction). Spawn date was highly heritable (h2 = 0.73) and had a cross-sex genetic correlation near unity. We provide the first estimate of heritability for age at maturity in ocean-going fish from this species and found it to be high heritable (h2 from 0.29–0.62, ..., , , # Data from: Distinct patterns of inheritance shape life-history traits in steelhead trout

[https://doi.org/10.5061/dryad.4f4qrfjjq](https://doi.org/10.5061/dryad.4f4qrfjjq)

Metadata records, SNP genotype data, fisheries trap counts, pedigree analysis results, bayesian linear regression results, animal model results and R notebooks used to complete the analyses.

The combination of these data and the [R code](https://github.com/abeulke/Beulke_et_al_2023_Molecular_Ecology/) will enable the reproduction of all the results presented in the paper.

## Description of the data and file structure

### Files in Beulke\_et\_al\_2023.zip:

Primary Data Files:

* RR\_steelhead\_2007-2020\_complied\_genotype\_data.csv
* RR\_steelhead\_trap\_counts.csv

Additional Data Files:

* ***animal\_model*** [directory]
* ***bayesian\_linear\_regressions*** [directory]
* ***snppit\_results*** [directory]
* RR\_steelhead\_sibling\_spawn\_dates.csv
* RR\_noSAD\_results\_1.tsv
* RR\_SAD\_results\_1.tsv

### Co...