Get access

Frozen chicken for wild fish: Nutritional transition in the Brazilian Amazon region determined by carbon and nitrogen stable isotope ratios in fingernails

Authors

  • Gabriela B. Nardoto,

    Corresponding author
    1. CENA, Universidade de São Paulo, Campus de Piracicaba, Av. Centenário 303, Piracicaba, SP, 13416-000, Brazil
    2. Faculdade UnB Planaltina, Campus de Planaltina, Universidade de Brasília, Brasília, DF, 73300-000, Brazil
    • Faculdade UnB Planaltina, Campus de Planaltina, Universidade de Brasília, Brasília, DF, 73300-000, Brazil
    Search for more papers by this author
  • Rui Sergio S. Murrieta,

    1. Instituto de Biociências, Universidade de São Paulo, Cidade Universitária, Rua do Matão, 14/321, São Paulo, SP, 05508-900, Brazil
    Search for more papers by this author
  • Luís Enrique G. Prates,

    1. Instituto de Biociências, Universidade de São Paulo, Cidade Universitária, Rua do Matão, 14/321, São Paulo, SP, 05508-900, Brazil
    2. Universidad Nacional de Colombia, km 2 via Tarapacá, Leticia, Colômbia
    Search for more papers by this author
  • Cristina Adams,

    1. Escola de Artes Ciências e Humanidades, Universidade de São Paulo, Av. Arlindo Bétio, 1000, São Paulo, SP, 03828-080, Brazil
    Search for more papers by this author
  • Maria Elisa P.E. Garavello,

    1. ESALQ, Universidade de São Paulo, Campus de Piracicaba, Av. Pádua Dias,11, Piracicaba, SP, 13418-900, Brazil
    Search for more papers by this author
  • Tatiana Schor,

    1. Departamento de Geografia, Universidade Federal do Amazonas, Av. Rodrigo Otávio Jordão Ramos, s/n, Coroado I, Manaus, AM, 69077-000, Brazil
    Search for more papers by this author
  • André De Moraes,

    1. Departamento de Geografia, Universidade Federal do Amazonas, Av. Rodrigo Otávio Jordão Ramos, s/n, Coroado I, Manaus, AM, 69077-000, Brazil
    Search for more papers by this author
  • Fernando D. Rinaldi,

    1. CENA, Universidade de São Paulo, Campus de Piracicaba, Av. Centenário 303, Piracicaba, SP, 13416-000, Brazil
    Search for more papers by this author
  • Juliana G. Gragnani,

    1. CENA, Universidade de São Paulo, Campus de Piracicaba, Av. Centenário 303, Piracicaba, SP, 13416-000, Brazil
    Search for more papers by this author
  • Edila A.F. Moura,

    1. Centro de Filosofia e Ciências Humanas, Universidade Federal do Pará, Campus Universitário, Guamá, Belém, PA, 66077-810, Brazil
    Search for more papers by this author
  • Paulo J. Duarte-Neto,

    1. Unidade Acadêmica de Garanhuns, Universidade Federal Rural de Pernambuco, Av. Bom Pastor s/n, Boa Vista, Garanhuns, PE, 55.292-270, Brazil
    Search for more papers by this author
  • Luiz A. Martinelli

    1. CENA, Universidade de São Paulo, Campus de Piracicaba, Av. Centenário 303, Piracicaba, SP, 13416-000, Brazil
    Search for more papers by this author

Abstract

Objectives:

Amazonian populations are experiencing dietary changes characteristic of the nutrition transition. However, the degree of change appears to vary between urban and rural settings. To investigate this process, we determined carbon and nitrogen stable isotope ratios in fingernails and dietary intake of Amazonian populations living along a rural to urban continuum along the Solimões River in Brazil.

Methods:

Carbon and nitrogen stable isotope ratios were analyzed from the fingernails of 431 volunteer subjects living in different settings ranging from rural villages, small towns to urban centers along the Solimões River. Data from 200 dietary intake surveys were also collected using food frequency questionnaires and 24-h recall interviews in an effort to determine qualitative aspects of diet composition.

Results:

Fingernail δ13C values (mean ± standard deviation) were −23.2 ± 1.3, −20.2 ± 1.5, and −17.4 ± 1.3‰ and δ15N values were 11.8 ± 0.6, 10.4 ± 0.8, and 10.8 ± 0.7‰ for those living in rural villages, small towns, and major cities, respectively. We found a gradual increase in the number of food items derived from C4 plant types (meat and sugar) and the replacement of food items derived from C3 plant types (fish and manioc flour) with increasing size of urban centers.

Conclusion:

Increasing urbanization in the Brazilian Amazon is associated with a significant change in food habits with processed and industrialized products playing an increasingly important role in the diet and contributing to the nutrition transition in the region. Am. J. Hum. Biol. 2011. © 2011 Wiley-Liss, Inc. .

Get access to the full text of this article

Ancillary