Open Collections

Braun, Douglas C.; Kindsvater, Holly K.; Otto, Sarah P.; Reynolds, John D.

<b>Abstract</b><br/>Species’ life history traits, including maturation age, number of reproductive bouts, offspring size and number, reflect adaptations to diverse biotic and abiotic selection pressures. A striking example of divergent life histories is the evolution of either iteroparity (breeding multiple times) or semelparity (breed once and die). We analysed published data on salmonid fishes and found that semelparous species produce larger eggs, that egg size and number increase with salmonid body size among populations and species and that migratory behaviour and parity interact. We developed three hypotheses that might explain the patterns in our data and evaluated them in a stage-structured modelling framework accounting for different growth and survival scenarios. Our models predict the observation of small eggs in iteroparous species when egg size is costly to maternal survival or egg number is constrained. By exploring trait co-variation in salmonids, we generate new hypotheses for the evolution of trade-offs among life history traits.; <b>Usage notes</b><br /><div class="o-metadata__file-usage-entry"><h4 class="o-heading__level3-file-title">Salmonid life history data from published literature</h4><div class="o-metadata__file-description">This is a compilation of published values of salmonid egg sizes, fecundity, body size, age at maturity, and GSI for 14 species.</div><div class="o-metadata__file-name">Kindsvater et al. SI Data Table 1.xlsx</br></div></div>

Asia; Europe; North America

Dryad version number: 1</p>

Version status: submitted</p>

Dryad curation status: Published</p>

Sharing link: https://datadryad.org/stash/share/fQ6ZjHBnDYF-NVG5u7OZj_nqVh9W565lBZ-2RTvnE-g</p>

Storage size: 118814</p>

Visibility: public</p>

University of British Columbia Library

10.14288/1.0397728

https://doi.org/10.5683/SP2/I2I5X9; https://doi.org/10.5061/dryad.8v96r

Dataverse