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  Inter-population variation of carotenoids in Galápagos land iguanas (Conolophus subcristatus)

Costantini, D., Dell'omo, G., Casagrande, S., Fabiani, A., Carosi, M., Bertacche, V., et al. (2005). Inter-population variation of carotenoids in Galápagos land iguanas (Conolophus subcristatus). Comparative Biochemistry and Physiology B-Biochemistry & Molecular Biology, 142(2), 239-44. doi:10.1016/j.cbpb.2005.07.011.

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 Creators:
Costantini, David, Author
Dell'omo, Giacomo, Author
Casagrande, Stefania1, Author              
Fabiani, Anna, Author
Carosi, Monica, Author
Bertacche, Vittorio, Author
Marquez, Cruz, Author
Snell, Howard, Author
Snell, Heidi, Author
Tapia, Washington, Author
Gentile, Gabriele, Author
Affiliations:
1University of Parma, ou_persistent22              

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Free keywords: Animals Carotenoids Carotenoids: blood Carotenoids: genetics Ecuador Female Genetic Variation Genetics, Population Iguanas Iguanas: blood Iguanas: classification Iguanas: genetics Male
 Abstract: Carotenoids have received much attention from biologists because of their ecological and evolutionary implications in vertebrate biology. We sampled Galápagos land iguanas (Conolophus subcristatus) to investigate the types and levels of blood carotenoids and the possible factors affecting inter-population variation. Blood samples were collected from populations from three islands within the species natural range (Santa Cruz, Isabela, and Fernandina) and one translocated population (Venecia). Lutein and zeaxanthin were the predominant carotenoids found in the serum. In addition, two metabolically modified carotenoids (anhydrolutein and 3'-dehydrolutein) were also identified. Differences in the carotenoid types were not related to sex or locality. Instead, carotenoid concentration varied across the localities, it was higher in females, and it was positively correlated to an index of body condition. Our results suggest a possible sex-related physiological role of xanthophylls in land iguanas. The variation in the overall carotenoid concentration between populations seems to be related to the differences in local abundance and type of food within and between islands.

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 Dates: 2005
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.cbpb.2005.07.011
 Degree: -

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Title: Comparative Biochemistry and Physiology B-Biochemistry & Molecular Biology
  Other : Comp. Biochem. Physiol. B-Biochem. Mol. Biol.
Source Genre: Journal
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Publ. Info: Amsterdam : Pergamon
Pages: - Volume / Issue: 142 (2) Sequence Number: - Start / End Page: 239 - 44 Identifier: ISSN: 1096-4959
CoNE: https://pure.mpg.de/cone/journals/resource/954925512468