Data from: Experimental food supplementation reveals habitat-dependent male reproductive investment in a migratory bird
| Main Authors: | Kaiser, Sara A., Sillett, T. Scott, Risk, Benjamin B., Webster, Michael S. |
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| Format: | info dataset Journal |
| Terbitan: |
, 2015
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4960443 |
Daftar Isi:
- Environmental factors can shape reproductive investment strategies and influence the variance in male mating success. Environmental effects on extrapair paternity have traditionally been ascribed to aspects of the social environment, such as breeding density and synchrony. However, social factors are often confounded with habitat quality and are challenging to disentangle. We used both natural variation in habitat quality and a food supplementation experiment to separate the effects of food availability—one key aspect of habitat quality—on extrapair paternity (EPP) and reproductive success in the black-throated blue warbler, Setophaga caerulescens. High natural food availability was associated with higher within-pair paternity (WPP) and fledging two broods late in the breeding season, but lower EPP. Food-supplemented males had higher WPP leading to higher reproductive success relative to controls, and when in low-quality habitat, food-supplemented males were more likely to fledge two broods but less likely to gain EPP. Our results demonstrate that food availability affects trade-offs in reproductive activities. When food constraints are reduced, males invest in WPP at the expense of EPP. These findings imply that environmental change could alter how individuals allocate their resources and affect the selective environment that drives variation in male mating success.
- WPP Model Table 1Dataset supporting the results examining the effects of natural variation in food availability on within-pair paternity (Table 1 Model 1).Model1Table1Data.csvEPP Model Table 1Dataset supporting the results examining the effects of natural variation in food availability on extrapair paternity (Table 1 Model 2).Model2Table1Data.csvDouble brooding Model Table 1Dataset supporting the results examining the effects of natural variation in food availability on double brooding (Table 1 Model 3).Model3Table1Data.csvTable 2Dataset supporting the results examining the effects of food supplementation on within-pair paternity, extrapair paternity, double brooding and total reproductive success (Table 2 Models 1-4).Model1to4Table2Data.csvPoisson ModelDataset supporting the results investigating the relative contribution of within-pair paternity, extrapair paternity and double brooding on total reproductive success (Figure 2).ResultsSecDTableS3Data.csv