Limited inbreeding avoidance at the gamete level despite inbreeding depression in Atlantic salmon (Salmo salar)

Inbreeding and the associated increase in homozygosity and potential accumulation of deleterious alleles may reduce fitness in a process known as inbreeding depression. Mechanisms to mitigate reproduction between close relatives, ranging from pre-mating mate choice to post-mating gamete selection, have evolved across taxa. In external fertilizers like Atlantic salmon (Salmo salar), where females have limited control over paternity, mechanisms of inbreeding avoidance can be expected to evolve at the gamete level. Philopatric Atlantic salmon may run the risk of breeding between relatives, particularly in small populations, and frequent escapes from aquaculture settings are augmenting the chances of adults from the same sibling cohort overlapping in the wild, raising potential ecological and sustainability concerns. Moreover, the presence of inbreeding avoidance mechanisms between full siblings in externally fertilising fish is currently untested. This study tested post-mating inbreeding a..., , # Limited inbreeding avoidance at the gamete level despite inbreeding depression in Atlantic salmon (Salmo salar)

Dataset DOI: [10.5061/dryad.rbnzs7hqp](10.5061/dryad.rbnzs7hqp)

## Description of the data and file structure

Data set associated with the research article Limited inbreeding avoidance at the gamete level despite inbreeding depression in Atlantic salmon (Salmo salar)’

All the material has been deposited on the DRYAD repository for replicability, transparency and for future research purposes.

List of necessary files:

files containing the collected parameters and variables used in the models.

* dataset_sibnonsib_Rcopy2.xlsx

- morphometrics_SIBNONSIB_VERT1.xlsx

* actingasnew3.xlsx

(R-scripts to run all the analyses by using the above mentioned datasets,  R version 4.3.3)

* Spermbehav_repr.out_SIBNONSIB1.txt and MHC_paternity.txt

**Glossary of variables:**

* N: unique #ID for individual

- Fl (cm): Fork length reported in centimetres (cm)

* Bw (gr): Body weight rep...,