N. Zorrozua, C. Alonso-Alvarez, B. Diaz, C. Sanpera, L. Jover, J. Arizaga
{"title":"碳δ13C同位素标记值与成年黄腿鸥喙部类胡萝卜素着色的相关性","authors":"N. Zorrozua, C. Alonso-Alvarez, B. Diaz, C. Sanpera, L. Jover, J. Arizaga","doi":"10.13157/arla.67.2.2020.ra6","DOIUrl":null,"url":null,"abstract":"Summary. The carotenoid-based colouration that many birds present may honestly reflect the quality of the bearer, as carotenoids have to be obtained through diet. These pigments are important for many physiological functions and individuals could find a trade-off between the allocation of carotenoids for these uses and their accumulation for secondary-sexual and social traits. The Yellow-legged Gull Larus michahellis is an opportunistic species that feeds on a wide spectrum of prey. We studied whether carotenoid-based colouration (bill, red spot, eye-ring) is related to the trophic ecology inferred by the isotopic composition of adults' feathers at three colonies of this species. The isotopic marker δ13C negatively correlated with carotenoid-based colouration (red spot area). Contrarily to a priori prediction, the marker indicated that higher consumption of landfill scraps and terrestrial prey might lead to a larger red bill spot in adult Yellow-legged Gulls independently of sex. No correlation was detected between isotopic signatures and egg volume in females. The finding that higher consumption of marine prey may imply a smaller red spot supports some results from other avian studies that report that feeding on human-related terrestrial food sources has an apparently positive effect on the adult phenotype. The results may suggest that higher consumption of marine prey may not be as advantageous as supported by previous studies. Nonetheless, the effects of potentially toxic compounds that may come from some feeding sources should be further studied, including any delayed sub-lethal effects on the physiology of adults and, probably, chicks. —Zorrozua, N., Alonso-Álvarez, C., Diaz, B., Sanpera, C., Jover, Ll. & Arizaga, J. (2020). Carbon δ13C isotopic marker values correlate with carotenoid-based bill colouration in adult Yellow-legged Gulls Larus michahellis. Ardeola, 67: 325-339.","PeriodicalId":55571,"journal":{"name":"Ardeola-International Journal of Ornithology","volume":"14 1","pages":"325 - 339"},"PeriodicalIF":1.4000,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Carbon δ13C Isotopic Marker Values Correlate with Carotenoid-Based Bill Colouration in Adult Yellow-Legged Gulls Larus michahellis\",\"authors\":\"N. Zorrozua, C. Alonso-Alvarez, B. Diaz, C. Sanpera, L. Jover, J. Arizaga\",\"doi\":\"10.13157/arla.67.2.2020.ra6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Summary. The carotenoid-based colouration that many birds present may honestly reflect the quality of the bearer, as carotenoids have to be obtained through diet. These pigments are important for many physiological functions and individuals could find a trade-off between the allocation of carotenoids for these uses and their accumulation for secondary-sexual and social traits. The Yellow-legged Gull Larus michahellis is an opportunistic species that feeds on a wide spectrum of prey. We studied whether carotenoid-based colouration (bill, red spot, eye-ring) is related to the trophic ecology inferred by the isotopic composition of adults' feathers at three colonies of this species. The isotopic marker δ13C negatively correlated with carotenoid-based colouration (red spot area). Contrarily to a priori prediction, the marker indicated that higher consumption of landfill scraps and terrestrial prey might lead to a larger red bill spot in adult Yellow-legged Gulls independently of sex. No correlation was detected between isotopic signatures and egg volume in females. The finding that higher consumption of marine prey may imply a smaller red spot supports some results from other avian studies that report that feeding on human-related terrestrial food sources has an apparently positive effect on the adult phenotype. The results may suggest that higher consumption of marine prey may not be as advantageous as supported by previous studies. Nonetheless, the effects of potentially toxic compounds that may come from some feeding sources should be further studied, including any delayed sub-lethal effects on the physiology of adults and, probably, chicks. —Zorrozua, N., Alonso-Álvarez, C., Diaz, B., Sanpera, C., Jover, Ll. & Arizaga, J. (2020). Carbon δ13C isotopic marker values correlate with carotenoid-based bill colouration in adult Yellow-legged Gulls Larus michahellis. Ardeola, 67: 325-339.\",\"PeriodicalId\":55571,\"journal\":{\"name\":\"Ardeola-International Journal of Ornithology\",\"volume\":\"14 1\",\"pages\":\"325 - 339\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2020-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ardeola-International Journal of Ornithology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.13157/arla.67.2.2020.ra6\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ORNITHOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ardeola-International Journal of Ornithology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.13157/arla.67.2.2020.ra6","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ORNITHOLOGY","Score":null,"Total":0}
Carbon δ13C Isotopic Marker Values Correlate with Carotenoid-Based Bill Colouration in Adult Yellow-Legged Gulls Larus michahellis
Summary. The carotenoid-based colouration that many birds present may honestly reflect the quality of the bearer, as carotenoids have to be obtained through diet. These pigments are important for many physiological functions and individuals could find a trade-off between the allocation of carotenoids for these uses and their accumulation for secondary-sexual and social traits. The Yellow-legged Gull Larus michahellis is an opportunistic species that feeds on a wide spectrum of prey. We studied whether carotenoid-based colouration (bill, red spot, eye-ring) is related to the trophic ecology inferred by the isotopic composition of adults' feathers at three colonies of this species. The isotopic marker δ13C negatively correlated with carotenoid-based colouration (red spot area). Contrarily to a priori prediction, the marker indicated that higher consumption of landfill scraps and terrestrial prey might lead to a larger red bill spot in adult Yellow-legged Gulls independently of sex. No correlation was detected between isotopic signatures and egg volume in females. The finding that higher consumption of marine prey may imply a smaller red spot supports some results from other avian studies that report that feeding on human-related terrestrial food sources has an apparently positive effect on the adult phenotype. The results may suggest that higher consumption of marine prey may not be as advantageous as supported by previous studies. Nonetheless, the effects of potentially toxic compounds that may come from some feeding sources should be further studied, including any delayed sub-lethal effects on the physiology of adults and, probably, chicks. —Zorrozua, N., Alonso-Álvarez, C., Diaz, B., Sanpera, C., Jover, Ll. & Arizaga, J. (2020). Carbon δ13C isotopic marker values correlate with carotenoid-based bill colouration in adult Yellow-legged Gulls Larus michahellis. Ardeola, 67: 325-339.
期刊介绍:
Ardeola: International Journal of Ornithology is the scientific journal of SEO/BirdLife, the Spanish Ornithological Society. The journal had a regional focus when it was first published, in 1954. Since then, and particular during the past two decades, the journal has expanded its thematic and geographical scope. It is now a fully international forum for research on all aspects of ornithology. We thus welcome studies within the fields of basic biology, ecology, behaviour, conservation and biogeography, especially those arising from hypothesis-based research. Although we have a long publication history of Mediterranean and Neotropical studies, we accept papers on investigations worldwide.
Each volume of Ardeola has two parts, published annually in January and July. The main body of each issue comprises full-length original articles (Papersand Review articles) and shorter notes on methodology or stimulating findings (Short Communications). The publication language is English, with summaries, figure legends and table captions also in Spanish. Ardeolaalso publishes critical Book Reviewsand PhD-Dissertation Summaries; summarising ornithological theses defended in Spain. Finally there are two Spanish-language sections, Ornithological News; summarising significant recent observations of birds in Spain, and Observations of Rare Birds in Spain, the annual reports of the Spanish Rarities Committee.