Data/hora: 08/06/2024 19:11:41

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	06/05/1998	
Data da última atualização: 	27/03/2017	
Autoria: 	DeNIRO, M. J.; EPSTEIN, S.	
Título: 	Influence of diet on the distribution of carbon isotopes in animals.	
Ano de publicação: 	1978	
Fonte/Imprenta: 	Geochimica et Cosmochimica Acta, v.42, p.495-506, 1978.	
Idioma: 	Inglês	
Conteúdo: 	The influence of diet on the distribution of carbon isotopes in animals was investigated by analyzing animals grown in the laboratory on diets of constant carbon isotopic composition. The isotopic composition of the whole body of an animal reflects the isotopic composition of its diet, but the animal is on average enriched in...about 1% relative to the diet. In three of the four cases examined, the 13C enrichment of the whole body relative to the diet is balanced by a 13C depletion of the respired CO2. The isotopic relationships between the whole bodies of animals and their diets are similar for different species raised on the same diet and for the same species raised on different diets. However, the 13C values of whole bodies of individuals of a species raised on the same diet may differ by up to 2%. The relationships between the 13C 12C ratio of a tissue and the 13C/12C ratio of the diet depends both on the trype of tissue and on the nature of the diet. Many of the isotopic relationships among the major biochemical fractions, namely the lipid, carbohydrate and protein fractions, are qualitatively preseved as diet carbon is incorporated into the animal. However the different between the 13C values of a biochemical fraction in an animal and in its diet may be as large as 3%. The 13C values of the biochemical components collagen, chitin and the insoluble organic fractions of shells, all of which are often preserved in fossil material are related to the isotopic composition of the diet.	
Palavras-Chave: 	Carbon isotopes; Distribuicao; Distribution.	
Thesagro: 	Animal; Carbono; Dieta.	
Thesaurus Nal: 	diet.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (35511-1) - ADC - SP - PP - SP15542 -  - 15542 - DIS