Data from: Effects of individual-based preferences for colour-banded mates on sex allocation in zebra finches
Song, Zitan, Beijing Forestry University
Liu, Yao, Beijing Forestry University
Booksmythe, Isobel, University of Zurich
Ding, Changqing, Beijing Forestry University
Published Apr 04, 2017 on Dryad.
Cite this dataset
Song, Zitan; Liu, Yao; Booksmythe, Isobel; Ding, Changqing (2017). Data from: Effects of individual-based preferences for colour-banded mates on sex allocation in zebra finches [Dataset]. Dryad. https://doi.org/10.5061/dryad.35115
Sex allocation theory predicts that females mated to attractive males produce more sons than females mated to unattractive males. However, previous tests of this hypothesis have obtained mixed results. We suggest that females differ in the traits they find attractive. To test this proposition, we assessed female zebra finches’ preferences for males banded with red or green plastic leg bands and then tested the sex allocation pattern of females paired with preferred and non-preferred males. Although most females preferred red-banded males, 34% of females consistently preferred green-banded males. The sex ratio at laying and hatching was not influenced by paternal preferred status. However, the fledging sex ratios differed between females paired with preferred and non-preferred males due to sex-biased chick mortality; sons of females paired with preferred males were born heavier and were more likely to survive than daughters. Our results indicate that female zebra finches show individual variation in their preferences for colour banded males, although females do not seem to adjust the offspring sex ratio in response to their mate’s band colour. However, the differential post-hatch mortality suggests females may differentially allocate resources into male and female eggs according to their individual mate preferences.
zebra finch sex ratio－paper
The brood sex ratio, brood size and other brood level data at zebra finch reproduction in this study.
zebra finch selection original
Female zebra finches' preference on red- or green-bands male, and the consistence of this behaviour
zebra finch all chicks
Nestlings' condition at female zebra finch reproduction in this study
National Science Foundation, Award: This work was supported by National Natural Science Foundation of China (No. 31372218)