Erratum: Fujita, M., Roth, E., Lo, Y.-J., Hurst, C., Vollner, J., Kendell, A. (2012), in poor families, mothers' milk is richer for daughters than sons: A test of Trivers-Willard hypothesis in agropastoral settlements in Northern Kenya (Am. J. Phys. Anthropol. 149 (52-59). doi: 10.1002/ajpa.22092);In poor families, mothers' milk is richer for daughters than sons: A test of Trivers-Willard hypothesis in agropastoral settlements in Northern Kenya

American Journal of Physical Anthropology

Volumn 149, Issue 1, 2012, Pages 52-59

  Fujita, Masako ^a   Roth, Eric ^b   Lo, Yun Jia ^a   Hurst, Carolyn ^a   Vollner, Jennifer ^a   Kendell, Ashley ^a  

^a MICHIGAN STATE UNIVERSITY   (United States)

^b UNIVERSITY OF VICTORIA   (Canada)

Author keywords

Africa; breastfeeding frequency; human milk fat; maternal investment; nutrition

Indexed keywords

MILK FAT;

ADULT; ARTICLE; BREAST FEEDING; BREAST MILK; BREAST MILK EXPRESSION; CONTROLLED STUDY; DAUGHTER; FEMALE; HUMAN; KENYA; LOWEST INCOME GROUP; MAJOR CLINICAL STUDY; MALE; MATERNAL BEHAVIOR; MATERNAL WELFARE; SEX DIFFERENCE; SOCIAL STATUS; SOCIOECONOMICS; SON;

EID: 84865226674     PISSN: 00029483     EISSN: 10968644     Source Type: Journal    
DOI: 10.1002/ajpa.22381     Document Type: Erratum

References (64)

1. Bailey KV,. 1965. Quantity and composition of breast milk in some New Guinean populations. J Trop Pediatr Afr Child Health 11: 35-49
2. Bereczkei T, Dunbar RIM,. 1997. Female-biased reproductive strategies in a Hungarian Gypsy population. Proc R Soc Lond B Biol Sci 264: 17-22.
3. Brown KR, Akhtar NA, Robertson AD, Ahmed MG,. 1986. Lactational capacity of marginally nourished mothers: relationships between maternal nutritional status and quantity and proximate composition of milk. Pediatrics 78: 909-19. (Pubitemid 17170704)
4. Brunson EK, Shell-Duncan B, Steele M,. 2009. Women's autonomy and its relationship to children's nutrition among the Rendille of northern Kenya. Am J Hum Biol 21: 55-64.
5. Cronk L,. 1989. Low socioeconomic status and female-biased parental investment: the Mukogodo example. Am Anthropol 91: 414-429.
6. Cronk L,. 2000. Female-biased parental investment and growth performance among the Mukogodo. In:, Cronk L, Chagnon N, Irons W, editors. Adaptation and human behavior: an anthropological perspective. New York: Aldine de Gruyter. p 203-221.
7. Dahl G, Hjort A,. 1976. Having herds: pastoral herd growth and household economy. Stockholm Studies in Social Anthropology, 2. Stockholm: Department of Social Anthropology, University of Stockholm.
8. Dickemann M,. 1979a. Female infanticide, reproductive strategies, and social stratification: a preliminary model. In:, Chagnon N, Irons W, editors. Evolutionary biology and human social behavior: an anthropological perspective. North Scituate, MA: Duxbury. p 321-367.
9. Dickemann M,. 1979b. The ecology of mating systems in hypergynous dowry societies. Social Sci Inform 18: 163-195.
10. Erhardt, JG,. 2003. SIGHT AND LIFE vitamin A intake calculation program. A free program made available by SIGHT and LIFE. Available at:http://www. sightandlife.org/vac/vac.html. Accessed October 8, 2006.
11. Fratkin E,. 1998. Ariaal pastoralists of Kenya: surviving drought and development in Africa's arid lands. Boston: Allyn & Bacon.
12. Fratkin EM, Roth EA,. 2005. The setting: pastoral sedentarization in Marsabit District, northern Kenya. In:, Fratkin EM, Roth EA, editors. As pastoralists settle: social, health, and economic consequences of pastoral sedentarization in Marsabit District, Kenya. New York: Kluwer Academic/Plenum Publishers. p 29-52.
13. Fratkin EM, Roth, EA, Nathan MA,. 1999. When nomads settle: the effects of commoditization, nutritional change, and formal education on Ariaal and Rendille pastoralists. Curr Anthropol 40: 729-735.
14. Fratkin EM, Smith K,. 2005. Women's changing economic roles with pastoral sedentarization: varying strategies in alternate Rendille communities. In:, Fratkin EM, Roth EA, editors. As pastoralists settle: social, health, and economic consequences of pastoral sedentarization in Marsabit District, Kenya. New York: Kluwer Academic/Plenum Publishers. p 155-172.
15. Frisancho AR,. 1990. Anthropometric standards for the assessment of growth and nutritional status. Ann Arbor: The University of Michigan Press.
16. Fujita M,. 2008. An epidemiological and evolutionary investigation of mother-offspring vitamin A transfer. Doctoral Dissertation. University of Washington, Seattle.
17. Fujita M, Roth EA,. 2011. Maternal vitamin A status and parental investment in northern Kenya. Abstract. Am J Hum Biol 23: 259.
18. Fujita M, Shell-Duncan B, Ndemwa P, Brindle E, Lo Y, Kombe Y, O'Connor KA,. 2011. Vitamin A dynamics in breast milk and liver stores: a life history perspective. Am J Hum Biol 23: 664-673.
19. Gaulin SJC, Robbins CJ,. 1991. Trivers-Willard effect in contemporary North American society. Am J Phys Anthropol 85: 61-69.
20. Guggenheim CB, Davis MF, Figueredo AJ,. 2007. Sons or daughters: a cross-cultural study of sex ratio biasing and differential parental investment. J Arizona-Nevada Acad Sci 39: 73-90.
21. Hanafy MM, Morsey MRA, Seddick Y, Habib YA, el Lozy M,. 1972. Maternal nutrition and lactation performance. J Trop Pediatr Environ Child Health 18: 187-191
22. Hewison M, Gaillard JM,. 1999. Successful sons or advantaged daughters? The Trivers-Willard model and sex-biased maternal investment in ungulates. Trends Ecol Evol 14: 229-234.
23. Hinde K,. 2009. Richer milk for sons but more milk for daughters: sex-biased investment during lactation varies with maternal life history in rhesus macaques. Am J Hum Biol 21: 512-9.
24. Hinde K, Milligan LA,. 2011. Primate milk: proximate mechanisms and ultimate perspectives. Evol Anthropol 20: 9-23.
25. Howell N,. 1979. Demography of the Dobe !Kung. New York: Academic Press.
26. Jelliffe DB, Jelliffe EFP,. 1978. The volume and composition of human milk in poorly nourished communities: a review. Am J Clin Nut 31: 492-515. (Pubitemid 8300945)
27. Jenness R,. 1979. The composition of human milk. Semin Perinatol 3: 225-239. (Pubitemid 9224081)
28. Johnson SE,. 2003. Life history and the competitive environment: trajectories of growth, maturation, and reproductive output among chacma baboons. Am J Phys Anthropol 120: 83-98. (Pubitemid 36020001)
29. Kent JC, Mitoulas LR, Cregan MD, Ramsay DT, Doherty DA, Hartmann PE,. 2006. Volume and frequency of breastfeeding and fat content of breast milk throughout the day. Pediatrics 117: e387-e395. (Pubitemid 46063177)
30. Keller MC, Nesse R, Hofferth S,. 2001. The Trivers-Willard hypothesis of parental investment: no effect in the contemporary United States. Evol Hum Behav 22: 343-360. (Pubitemid 33619692)
31. Koziel S, Ulijaszek SJ,. 2001. Waiting for Trivers and Willard: do the rich really favor sons? Am J Phys Anthropol 115: 71-79. (Pubitemid 32378635)
32. Lammi-Keefe CJ, Jensen RB,. 1984. Lipids in human milk: a review. 2: Composition and fat-soluble vitamins. J Pediatr Gastroenterol Nutr 3: 172-198. (Pubitemid 14163782)
33. Lande B, Andersen LF, Baerug A, Trygg KU, Lund-Larsen K, Veierod MB, Bjorneboe GE,. 2003. Infant feeding practices and associated factors in the first six months of life: the Norwegian infant nutrition survey. Acta Paediatr 92: 152-61. (Pubitemid 36390418)
34. Lauber E, Reinhardt M,. 1979. Studies on the quality of breast milk during 23 months of lactation in a rural community of the Ivory Coast. Am J Clin Nutr 32: 1159-1173.
35. Lindblad BS, Rahimtoola RJ,. 1974. A pilot study of the quality of human milk in a lower socio-economic group in Karachi, Pakistan. Acta Paediat Scand 63: 125-128.
36. Lucas A, Gibbs JA, Lyster RL, Baum JD,. 1978. Creamatocrit: simple clinical technique for estimating fat concentration and energy value of human milk. Br Med J 22: 1018-20. (Pubitemid 8308864)
37. Mandel D, Lubetzky R, Dollberg S, Barak S, Mimouni FB,. 2005. Fat and energy contents of expressed human breast milk in prolonged lactation. Pediatrics 116: e432-e435. (Pubitemid 44336659)
38. Michaelsen KF, Larsen PS, Thomsen BL, Samuelson G,. 1995. The Copenhagen cohort study on infant nutrition and growth: breast-milk intake, human milk macronutrient content, and influencing factors. Am J Clin Nutr 59: 600-11. (Pubitemid 24085096)
39. Mitoulas LR, Kent JC, Cox DB, Owens RA, Sherriff JL, Hartmann PE,. 2002. Variation in fat, lactose and protein in human milk over 24 h and throughout the first year of lactation. Br J Nutr 88: 29-37. (Pubitemid 34752312)
40. Murase M, Mizuno K, Nishida Y, Mizuno N, Taki M, Yoshizawa M, Itabashi K, Mukai Y,. 2009. Composition of Creamatocrit and protein concentration in each mammary lobe of the same breast: does the milk composition of each mammary lobe differ in the same breast? Breastfeed Med 4: 189-195.
41. Powe C, Knott CD, Conklin-Brittain N,. 2010. Infant sex predicts breast milk energy content. Am J Hum Biol 22: 50-54.
42. Prentice A, Prentice AM, Whitehead RG,. 1981. Breast-milk fat concentrations of rural African women. 1. Short-term variations within individuals. Br J Nutr 45: 483-494. (Pubitemid 11083985)
43. Quinlan RJ, Quinlan MB, Flin MV,. 2003. Parental investment and age at weaning in a Caribbean village. Evol Hum Behav 24: 1-16. (Pubitemid 35450042)
44. Quinlan RJ, Quinlan MB, Flinn MV,. 2005. Local resource enhancement and sex-biased breastfeeding in a Caribbean community. Curr Anthropol 46: 471-480. (Pubitemid 44273454)
45. Roth EA,. 1990. Modeling Rendille household herd composition. Hum Ecol 18: 441-455.
46. Roth EA,. 1994. Reexamination of Rendille population regulation. Am Anthropol 95: 597-611.
47. Roth EA,. 1999. Proximate and distal demographic variables among Rendille pastoralists. Hum Ecol 27: 517-536. (Pubitemid 30132663)
48. Roth EA,. 2004. Culture, biology, and anthropological demography. Cambridge: Cambridge University Press.
49. Roth EA, Fratkin EM,. 2005. The social, health, and economic consequences of pastoral sedentarization in Marsabit District, northern Kenya. In:, Fratkin EM, Roth EA, editors. As pastoralists settle: social, health, and economic consequences of pastoral sedentarization in Marsabit District, Kenya. New York: Kluwer Academic/Plenum Publishers. p 1-28.
50. Saarela T, Kokkonen J, Kovisto M,. 2005. Macronutrient and energy contents of human milk fractions during the first six months of lactation. Acta Paediatr 94: 1176-1181. (Pubitemid 41510607)
51. Sellen DW,. 2007. Evolution of infant and young child feeding: implications for contemporary public health. Annu Rev Nutr 27: 123-148. (Pubitemid 351373351)
52. Sellen DW,. 2010. Mobility, animal source foods and micronutrient needs among African pastoralists. Soc Biol Hum Aff 75: 27-49.
53. Shell-Duncan B, Obiero WO,. 2000. Child nutrition in the transition from nomadic pastoralism to settled lifestyles: individual, household, and community-level factors. Am J Phys Anthropol 113: 183-200. (Pubitemid 33051133)
54. Smith K,. 1998. Sedentarization and market integration: new opportunities for Rendille and Ariaal women of northern Kenya. Hum Organ 57: 459-468. (Pubitemid 29184419)
55. StataCorp LP. 2004-2007. STATA statistical software, version 9.2. College Station Texas: StataCorp LP.
56. Stearns SC,. 1992. The evolution of life histories. Oxford: Oxford University Press.
57. Szabo E, Boehn G, Beermann C, Weyermann M, Brenner H, Rothenbacher D, Desci T,. 2010. Fatty acid profile comparisons in human milk sampled from the same mothers at the sixth week and the sixth month of lactation. J Pediatr Gastroenterol Nutr 50: 316-320.
58. Tracer DP,. 2009. Breastfeeding structure as a test of parental investment theory in Papua New Guinea. Am J Hum Biol 21: 635-642.
59. Trivers RL,. 1974. Parent offspring conflict. Am Zool 11: 249-264.
60. Trivers RL, Willard DE,. 1973. Natural selection of parental ability to vary the sex ratio of offspring. Science 179: 90-92.
61. Underwood BA, Hepner R, Abdullah H,. 1970. Protein, lipid, and fatty acids of human milk from Pakistani women during prolonged periods of lactation. Am J Clin Nutr 23: 400-407.
62. Vitzthum VJ,. 1994. Suckling patterns: lack of concordance between maternal recall and observational data. Am J Hum Biol 6: 551-562.
63. Voland E,. 1998. Evolutionary ecology of human reproduction. Annu Rev Anthropol 27: 347-74. (Pubitemid 128460206)
64. Wang CD, Chu PS, Mellen BG, Shenai JP,. 1999. Creamatocrit and the nutrient composition of human milk. J Perinatol 343-6.