Obiekt
Tytuł: Production of melanin-based plumage traits in male house sparrows: no effect of dietary copper
Tytuł publikacji grupowej:
Abstract:
In many bird species, males possess conspicuous patches of black feathers on their head or breast, the size of which is often positively related to their success in intra- and intersexual interactions. The production of these plumage signals is presumed to depend upon one or more limiting factors which prevent low quality males developing large signals in order to gain the associated benefits. ; The coloration of these feathers is due to their infusion with the pigment melanin, which birds synthesize endogenously during a series of conversion steps beginning with the enzymatic oxidation of the amino acid tyrosine. Copper is the cofactor of the enzyme responsible for this process, and it is possible that copper level limits the activity of the enzyme and therefore limits melanin production. We tested this hypothesis by manipulating the level of dietary copper available to individually caged juvenile and adult house sparrows (?Passer domesticus?) throughout their moult. ; Birds were provided with artificial diets containing either 100%, 50% or 10% of the recommended level of copper. Dietary copper did not affect the size of the black breast patch, the most obvious melanin-based plumage trait in this species, nor did it affect the reflectance of the black feathers. In sum, we reject the hypothesis that dietary copper limits the size or blackness of the breast patch of the male house sparrow.
Wydawca:
Zielona Góra: University of Zielona Góra, Faculty of Biological Sciences
Format:
Identyfikator zasobu:
DOI:
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Źródło:
International Studies on Sparrows, vol. 35
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Prawa do dysponowania publikacją:
Biblioteka Uniwersytetu Zielonogórskiego
Kolekcje, do których przypisany jest obiekt:
- Zielonogórska Biblioteka Cyfrowa > Repozytorium > Jednostki organizacyjne > Wydział Nauk Biologicznych
- Zielonogórska Biblioteka Cyfrowa > Repozytorium > Typy utworów > Artykuły
- Zielonogórska Biblioteka Cyfrowa > Repozytorium > Czasopisma naukowe i serie wydawnicze UZ > International Studies on Sparrows
Data ostatniej modyfikacji:
2023-05-17
Data dodania obiektu:
2023-05-05
Liczba wyświetleń treści obiektu:
85
Wszystkie dostępne wersje tego obiektu:
https://zbc.uz.zgora.pl/publication/81565
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Wyświetl opis w formacie OAI-PMH:
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International Studies on Sparrows
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International Studies on Sparrows, vol. 44 (2022)
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International Studies on Sparrows, vol. 43 (2019)
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International Studies on Sparrows, vol. 42 (2018)
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International Studies on Sparrows, vol. 41 (2017)
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International Studies on Sparrows, vol. 40 (2016)
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International Studies on Sparrows, vol. 39 (2015)
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International Studies on Sparrows, vol. 38 (2014)
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International Studies on Sparrows, vol. 37 (2013)
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International Studies on Sparrows, vol. 36 (2012)
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International Studies on Sparrows, vol. 35 (2011)
- International Studies on Sparrows, vol. 35 (2011) - spis treści
- Production of melanin-based plumage traits in male house sparrows: no effect of dietary copper
- What a sparrow bib can reveal
- Nesting sites of sympatrically breeding weavers: "Ploceus capensis" and "P. velatus" in mountain grasslands of southern Africa
- Misapplied ecology: investigations of population decline in the House Sparrow
- 8th Conference of the European Ornithologists` Union 27-30 August 2011, Riga
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International Studies on Sparrows, vol. 34 (2010)
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International Studies on Sparrows, vol. 33 (2009)
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International Studies on Sparrows, vol. 32 (2007)
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International Studies on Sparrows, vol. 30 [2005]
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International Studies on Sparrows, vol. 44 (2022)
| Nazwa wydania | Data |
|---|---|
| Production of melanin-based plumage traits in male house sparrows: no effect of dietary copper | 2023-05-17 |
