Effects of food limitation on the intensity of blue-green and brown eggshell coloration: an experimental study with the canary

R. Hargitai, Nóra Boross, Zoltán Nyiri, Zsuzsanna Eke

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Variation in blue-green and brown coloration of avian eggshells could be affected by several factors, including environmental nutritional constraints. Better availability of nutrients could influence the synthesis and deposition of pigments into the eggshell, so we may expect a link between the food availability during egg formation, the body condition of the female and intensity of eggshell coloration. This hypothesis has received mixed support so far: in some bird species a positive correlation between female body condition and eggshell blue-green coloration could be demonstrated, but other studies failed to find a significant link. In this study, we experimentally limited the food availability for domestic canaries Serinus canaria prior to and during egg laying, and examined its effects on the biliverdin- and protoporphyrin-based eggshell coloration. Treatment had no significant effect on eggshell blue-green chroma and biliverdin concentration. However, we found a significant positive relationship between female body condition and eggshell background blue-green chroma in the control group, but not in the food restricted group. Females possibly experiencing a decline in antioxidant capacity due to food limitation may not be able to produce a blue-green eggshell colour intensity reliably indicating their body condition. Furthermore, food-restricted canary females laid eggs with significantly higher eggshell brown chroma, spot intensity, and protoporphyrin concentration. Therefore, our results suggest that limitation in actual nutrient availability increases deposition of protoporphyrin into the eggshell, and it may also modify the association between female body condition and intensity of blue-green eggshell coloration.

Original languageEnglish
Article numbere01486
JournalJournal of Avian Biology
Volume49
Issue number1
DOIs
Publication statusPublished - Jan 1 2018

Fingerprint

food limitation
eggshell
canaries
egg shell
experimental study
color
body condition
protoporphyrin
egg
food availability
nutrient availability
effect
food
oogenesis
antioxidant
pigment
environmental factor
oviposition
pigments

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

Effects of food limitation on the intensity of blue-green and brown eggshell coloration : an experimental study with the canary. / Hargitai, R.; Boross, Nóra; Nyiri, Zoltán; Eke, Zsuzsanna.

In: Journal of Avian Biology, Vol. 49, No. 1, e01486, 01.01.2018.

Research output: Contribution to journalArticle

@article{7a316f498c02417da6592ccea884bf92,
title = "Effects of food limitation on the intensity of blue-green and brown eggshell coloration: an experimental study with the canary",
abstract = "Variation in blue-green and brown coloration of avian eggshells could be affected by several factors, including environmental nutritional constraints. Better availability of nutrients could influence the synthesis and deposition of pigments into the eggshell, so we may expect a link between the food availability during egg formation, the body condition of the female and intensity of eggshell coloration. This hypothesis has received mixed support so far: in some bird species a positive correlation between female body condition and eggshell blue-green coloration could be demonstrated, but other studies failed to find a significant link. In this study, we experimentally limited the food availability for domestic canaries Serinus canaria prior to and during egg laying, and examined its effects on the biliverdin- and protoporphyrin-based eggshell coloration. Treatment had no significant effect on eggshell blue-green chroma and biliverdin concentration. However, we found a significant positive relationship between female body condition and eggshell background blue-green chroma in the control group, but not in the food restricted group. Females possibly experiencing a decline in antioxidant capacity due to food limitation may not be able to produce a blue-green eggshell colour intensity reliably indicating their body condition. Furthermore, food-restricted canary females laid eggs with significantly higher eggshell brown chroma, spot intensity, and protoporphyrin concentration. Therefore, our results suggest that limitation in actual nutrient availability increases deposition of protoporphyrin into the eggshell, and it may also modify the association between female body condition and intensity of blue-green eggshell coloration.",
author = "R. Hargitai and N{\'o}ra Boross and Zolt{\'a}n Nyiri and Zsuzsanna Eke",
year = "2018",
month = "1",
day = "1",
doi = "10.1111/jav.01486",
language = "English",
volume = "49",
journal = "Journal of Avian Biology",
issn = "0908-8857",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Effects of food limitation on the intensity of blue-green and brown eggshell coloration

T2 - an experimental study with the canary

AU - Hargitai, R.

AU - Boross, Nóra

AU - Nyiri, Zoltán

AU - Eke, Zsuzsanna

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Variation in blue-green and brown coloration of avian eggshells could be affected by several factors, including environmental nutritional constraints. Better availability of nutrients could influence the synthesis and deposition of pigments into the eggshell, so we may expect a link between the food availability during egg formation, the body condition of the female and intensity of eggshell coloration. This hypothesis has received mixed support so far: in some bird species a positive correlation between female body condition and eggshell blue-green coloration could be demonstrated, but other studies failed to find a significant link. In this study, we experimentally limited the food availability for domestic canaries Serinus canaria prior to and during egg laying, and examined its effects on the biliverdin- and protoporphyrin-based eggshell coloration. Treatment had no significant effect on eggshell blue-green chroma and biliverdin concentration. However, we found a significant positive relationship between female body condition and eggshell background blue-green chroma in the control group, but not in the food restricted group. Females possibly experiencing a decline in antioxidant capacity due to food limitation may not be able to produce a blue-green eggshell colour intensity reliably indicating their body condition. Furthermore, food-restricted canary females laid eggs with significantly higher eggshell brown chroma, spot intensity, and protoporphyrin concentration. Therefore, our results suggest that limitation in actual nutrient availability increases deposition of protoporphyrin into the eggshell, and it may also modify the association between female body condition and intensity of blue-green eggshell coloration.

AB - Variation in blue-green and brown coloration of avian eggshells could be affected by several factors, including environmental nutritional constraints. Better availability of nutrients could influence the synthesis and deposition of pigments into the eggshell, so we may expect a link between the food availability during egg formation, the body condition of the female and intensity of eggshell coloration. This hypothesis has received mixed support so far: in some bird species a positive correlation between female body condition and eggshell blue-green coloration could be demonstrated, but other studies failed to find a significant link. In this study, we experimentally limited the food availability for domestic canaries Serinus canaria prior to and during egg laying, and examined its effects on the biliverdin- and protoporphyrin-based eggshell coloration. Treatment had no significant effect on eggshell blue-green chroma and biliverdin concentration. However, we found a significant positive relationship between female body condition and eggshell background blue-green chroma in the control group, but not in the food restricted group. Females possibly experiencing a decline in antioxidant capacity due to food limitation may not be able to produce a blue-green eggshell colour intensity reliably indicating their body condition. Furthermore, food-restricted canary females laid eggs with significantly higher eggshell brown chroma, spot intensity, and protoporphyrin concentration. Therefore, our results suggest that limitation in actual nutrient availability increases deposition of protoporphyrin into the eggshell, and it may also modify the association between female body condition and intensity of blue-green eggshell coloration.

UR - http://www.scopus.com/inward/record.url?scp=85042122478&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042122478&partnerID=8YFLogxK

U2 - 10.1111/jav.01486

DO - 10.1111/jav.01486

M3 - Article

AN - SCOPUS:85042122478

VL - 49

JO - Journal of Avian Biology

JF - Journal of Avian Biology

SN - 0908-8857

IS - 1

M1 - e01486

ER -