Data from: Persistent directional selection on body size and a resolution to the paradox of stasis
| Main Authors: | Rollinson, Njal, Rowe, Locke |
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| Format: | info dataset Journal |
| Terbitan: |
, 2015
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4945061 |
Daftar Isi:
- Directional selection on size is common but often fails to result in micro-evolution in the wild. Similarly, macro-evolutionary rates in size are low relative to the observed strength of selection in nature. We show that many estimates of selection on size have been measured on juveniles, not adults. Further, parents influence juvenile size by adjusting investment per offspring. In light of these observations, we help resolve this paradox by suggesting that the observed upward selection on size is balanced by selection against investment per offspring, resulting in little or no net selection gradient. We find that trade-offs between fecundity and juvenile size are common, consistent with the notion of selection against investment per offspring. We also find that median directional selection on size is positive for juveniles but no net directional selection exists for adult size. This is expected because parent-offspring conflict exists over size, and juvenile size is more strongly affected by investment per offspring than adult size. These findings provide qualitative support for the hypothesis that upward selection on size is balanced by selection against investment per offspring, where parent-offspring conflict over size is embodied in the opposing signs of the two selection gradients.
- JS DatabaseEstimates of selection on juvenile size traits, compiled by Njal Rollinson and Locke Rowe in September 2013. These data are are described as the "J-S Database" in the main text. Both the data included in our formal selection analyses as well as data omitted from formal analyses are included in this dataset.JS_Database_Dryad.csvGenetic & Phenotypic CorrelationsGenetic (rA) and phenotypic (rP) correlations between size and number of offspring collected from the literature.Genetic_Phenotypic_Correlations_Dryad.csvKD-DatabaseThese data represent the K-D Database, as defined in the main text. These selection estimates are not new; they were extracted from previously-compiled databases on phenotypic selection. They are presented here in Dryad only to facilitate replication of results presented in the main text, and to allow the reader to determine which studies estimated selection on juvenile size traits, and which studies estimated selection on adult size traits. For original data, consult: [Kingsolver, J., and S. Diamond. 2011. Data from: Phenotypic selection in natural populations: what limits directional selection? Dryad Digit. Repos. doi10.5061/dryad.7996.] and [Siepielski, A. M., K. M. Gotanda, M. B. Morrissey, S. E. Diamond, J. D. DiBattista, and S. M. Carlson. 2013. The spatial patterns of directional phenotypic selection. Ecol. Lett. 16:1382–92.]