title: Impact of commercial farming on household reproductive strategies in Calakmul, Campeche, Mexico.
abstract: OBJECTIVE
  The purpose of this study was to determine if commercial agriculture can lead to changes in peasant reproductive strategies in migrant agriculturalists from Calakmul, Campeche, Mexico.
  
  
  METHODS
  The reproductive histories of 746 women from Calakmul, Campeche, Mexico were collected. The sample was first divided into women who had reproduced within or outside of Calakmul (RC and RO, respectively) and these were further subdivided into those who lived in households practicing subsistence agriculture and those who turned agriculture into a business (Household Subsistence Agricultural Strategy (HSA) and Household Commercial Agricultural Strategy (HCA), respectively). Age-specific fertility rate (ASFR) differences were compared between strategies and place of reproduction. Comparisons between interbirth interval and age at which desired fertility was reached were done with a Kaplan-Meier life table-based statistic.
  
  
  RESULTS
  In both strategies, RC women increased ASFRs by reducing age at first birth, and HSA-RC women also reduced interbirth intervals. HCA women had lower ASFRs than HSA women. The latter had a natural fertility pattern while the former expressed a desire to stop reproducing at a younger age. HCA-RC women showed important fertility reductions after age 25 and HCA-RO women after age 30.
  
  
  CONCLUSIONS
  Fertility reductions in households that practice commercial versus those that practice subsistence agriculture were significant. Also, a "frontier" effect was observed that increased fertility over all, but HCA households were not as influenced by it.
authors.affiliation: Department of Sustainability Science, El Colegio de la Frontera Sur (ECOSUR), Lerma Campeche, Campeche, C.P. 24500, Mexico.
authors.forename: Francisco D
authors.initials: FD
authors.lastname: Gurri
authors.affiliation: Centro INAH Quintana Roo, Av. Insurgentes #974 Col Forjadores, Chetumal, Quintana Roo, C.P. 77025, Mexico.
authors.forename: Allan
authors.initials: A
authors.lastname: Ortega-Muñoz
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000383:Agriculture / Q000706:statistics & numerical data*; D001723:Birth Rate; D002648:Child; D005190:Family; D005260:Female; D006801:Humans; D007197:Indians, Central American / Q000706:statistics & numerical data*; D053208:Kaplan-Meier Estimate; D008800:Mexico; D008875:Middle Aged; D043762:Reproductive Behavior / Q000706:statistics & numerical data*; D012959:Socioeconomic Factors; D014171:Transients and Migrants / Q000706:statistics & numerical data*