Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments
Abstract Understanding reproductive performance in ecologically impoverished vs. more sustained anthropogenic habitats is critical to assess population health status and to develop land use and conservation management strategies. We compared resource‐based maternal effects, reproductive performance,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-11-01
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| Series: | Ecosphere |
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| Online Access: | https://doi.org/10.1002/ecs2.1566 |
| _version_ | 1811234819678404608 |
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| author | Elizabeth Yohannes Helga Gwinner Raymond W. Lee Hubert Schwabl |
| author_facet | Elizabeth Yohannes Helga Gwinner Raymond W. Lee Hubert Schwabl |
| author_sort | Elizabeth Yohannes |
| collection | DOAJ |
| description | Abstract Understanding reproductive performance in ecologically impoverished vs. more sustained anthropogenic habitats is critical to assess population health status and to develop land use and conservation management strategies. We compared resource‐based maternal effects, reproductive performance, and offspring quality in a model migratory passerine bird, the European starling (Sturnus vulgaris). We assessed female condition, quantity of egg constituents, quality of diet consumed during egg formation, and nestling growth and survival in two habitats: cultivated farmland and meadows. Egg, albumin, and shell mass were greater at the meadow site, while yolk mass did not differ significantly between sites; albumin mass most strongly predicted egg mass. Stable isotope enrichment (δ15N and δ13C) in yolk but not albumin suggests a broader range of diet for yolk formation at the meadow site but could also reflect different hydric conditions between sites. δ13C and δ15N enrichment did not predict yolk, albumin, or egg mass. Concentration of yolk testosterone was higher at the meadow site and correlated with δ13C enrichment in yolk. Nestling survival was higher in the meadow than in the farmland site and corresponded to egg mass and δ13C enrichment in lipid‐free yolk. Surviving nestlings were larger in the meadow than in the farmland site. Results indicate that agricultural practice influences reproductive output through resource‐based maternal effects. The analyses of isotopic and biochemical composition of small samples of yolk and albumin may provide a minimally invasive tool to assess individual reproductive performance and predict impacts of habitat quality on population health. |
| first_indexed | 2024-04-12T11:42:42Z |
| format | Article |
| id | doaj.art-4a0288b3354b40cb9f6ffb7e9c9e86d3 |
| institution | Directory Open Access Journal |
| issn | 2150-8925 |
| language | English |
| last_indexed | 2024-04-12T11:42:42Z |
| publishDate | 2016-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecosphere |
| spelling | doaj.art-4a0288b3354b40cb9f6ffb7e9c9e86d32022-12-22T03:34:32ZengWileyEcosphere2150-89252016-11-01711n/an/a10.1002/ecs2.1566Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environmentsElizabeth Yohannes0Helga Gwinner1Raymond W. Lee2Hubert Schwabl3Department of Biology University of Konstanz Mainaustr. 252 D‐78464 Konstanz GermanyBehavioural Ecology and Evolutionary Genetics Max Planck Institute for Ornithology P.O. Box 1564 D‐82305 Starnberg (Seewiesen) GermanySchool of Biological Sciences Washington State University Pullman Washington 99164 USASchool of Biological Sciences Washington State University Pullman Washington 99164 USAAbstract Understanding reproductive performance in ecologically impoverished vs. more sustained anthropogenic habitats is critical to assess population health status and to develop land use and conservation management strategies. We compared resource‐based maternal effects, reproductive performance, and offspring quality in a model migratory passerine bird, the European starling (Sturnus vulgaris). We assessed female condition, quantity of egg constituents, quality of diet consumed during egg formation, and nestling growth and survival in two habitats: cultivated farmland and meadows. Egg, albumin, and shell mass were greater at the meadow site, while yolk mass did not differ significantly between sites; albumin mass most strongly predicted egg mass. Stable isotope enrichment (δ15N and δ13C) in yolk but not albumin suggests a broader range of diet for yolk formation at the meadow site but could also reflect different hydric conditions between sites. δ13C and δ15N enrichment did not predict yolk, albumin, or egg mass. Concentration of yolk testosterone was higher at the meadow site and correlated with δ13C enrichment in yolk. Nestling survival was higher in the meadow than in the farmland site and corresponded to egg mass and δ13C enrichment in lipid‐free yolk. Surviving nestlings were larger in the meadow than in the farmland site. Results indicate that agricultural practice influences reproductive output through resource‐based maternal effects. The analyses of isotopic and biochemical composition of small samples of yolk and albumin may provide a minimally invasive tool to assess individual reproductive performance and predict impacts of habitat quality on population health.https://doi.org/10.1002/ecs2.1566anthropogenic environmentcarbon stable isotopesegg qualityEuropean starlingnitrogen stable isotopesreproductive performance |
| spellingShingle | Elizabeth Yohannes Helga Gwinner Raymond W. Lee Hubert Schwabl Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments Ecosphere anthropogenic environment carbon stable isotopes egg quality European starling nitrogen stable isotopes reproductive performance |
| title | Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments |
| title_full | Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments |
| title_fullStr | Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments |
| title_full_unstemmed | Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments |
| title_short | Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments |
| title_sort | stable isotopes predict reproductive performance of european starlings breeding in anthropogenic environments |
| topic | anthropogenic environment carbon stable isotopes egg quality European starling nitrogen stable isotopes reproductive performance |
| url | https://doi.org/10.1002/ecs2.1566 |
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