top of page

Research Interests

Publications

Books

Navara KJ. (2018) Choosing sexes: Adaptive patterns and mechanisms of sex allocation in vertebrates. Springer-Verlag.

choosing sexes.jpg
Peer-reviewed journal articles

50. Wrobel ER, Molina E, Khan N, Mendonça MT, Navara KJ. (in press) Androgen and mineralocorticoid receptors are present on the germinal disc region in laying hens: Potential mediators of sex ratio adjustment in birds? General and Comparative Endocrinology.

49. Navara KJ, Wrobel ER. (2018) Frequent double ovipositions in two flocks of laying hens. Poultry Science. 98:1903-1910.

48. Possenti CD, Bentz, AB, Romano A, Parolini M, Caprioli M, Rubolini D, , Saino N. (2018) Predation risk affects egg mass but not egg steroid levels in yellow legged gulls. Published online: doi: 10.1093/cz/zoy064

47. Pusch EA, Navara KJ. (2018) Behavioral Phenotype Corresponds To Physiological Differences in Immunological and Stress Responsiveness in Reactive and Proactive Birds. General and Comparative Endocrinology. 261: 81-88.

46. Corti M, Romano A., Costanza A., Bentz A., Parolini M, Saino N, Rubolini D. (2018) Protoporphyrin-based eggshell pigmentation is associated with female plumage colouration and predicts offspring sex ratio in the barn swallow. Journal of Avian Biology. DOI: 10.1111/jav.01642.

45. Becker DJ, Czirják G, Volokhov D, Bentz AB, Carerra J, Camus M, Chizhikov V, Fenton B, Simmons N, Recuenco S, Gilbert A,Altizer SA, Streicker D. (2018) Livestock abundance predicts vampire bat demography, immune profiles, and bacterial infection risk. Philosophical Transactions of the Royal Society. 373: 2017-0089.

44. Bentz AB, Andreason V, Navara KJ. (2018) An experimental test of the relationship between yolk testosterone and the social environment in a colonial passerine. Journal of Avian Biology. 49(3): JAV-01635.

43. Pusch, EA, Bentz AB, Becker DJ, Navara KJ. (2017) Behavioral Phenotype Predicts Physiological Responses to Chronic Stress in Reactive and Proactive Birds. General and Compartive Endocrinology, 255: 71-77.

42. Bentz AB, Becker DJ, Navara KJ. (2016). Evolutionary implications of interspecific variation in a maternal effect: a meta-analysis of yolk testosterone response to competition. Royal Society Open Science, 3(11), 160499.

41. DuRant, SE, Hopkins WA, Carter AW, Kirkpatrick LT, , Hawley DM. (2016). Incubation temperature causes skewed sex ratios in a precocial bird. , (13), 1961-1964.

40. Bentz, AB, Sirman AE, Wada H, Navara KJ,  Hood WR. (2016). Relationship between maternal environment and DNA methylation patterns of estrogen receptor alpha in wild Eastern Bluebird (Sialia sialis) nestlings: a pilot study. Ecology and Evolution, 6(14), 4741-4752.

39. Gam AE, Navara KJ. (2016). Endogenous corticosterone elevations five hours prior to ovulation do not influence offspring sex ratios in Zebra Finches. Avian Biology Research, 9(3), 131-138.

38. Pinson, SE, Wilson, JL, and Navara KJ. (2015). Timing matters: corticosterone injections 4 h before ovulation bias sex ratios towards females in chickens. Journal of Comparative Physiology B, 185:539-546.

37. Navara KJ, Pinson SE, Chary P, and Taube PC. (2015). Higher rates of internal ovulations occur in broiler breeder hens treated with testosterone. Poultry science, 94(6), 1346-1352.

36. Navara KJ (2014) Low gestational weight gain skews human sex ratios towards females. Journal of Comparative Biochemistry and Physiology. PLoS One. 9: e114304.

35. Collins KE, Jordan BL, McLendon BL, , Beckstead RB, Wilson JL. (2013) No evidence for temperature-dependent sex determination or sex-biased embryo mortality in the chicken.. 92: 3096-3102.

34. Bentz AB, Navara KJ, Siefferman LM. (2013) Phenotypic plasticity in response to breeding density in tree swallows: an adaptive maternal effect?  Hormones and Behavior. 64: 729-736.

33. Navara KJ (2013) Hormone-mediated sex ratio adjustment in vertebrates. Integrative and Comparative Biology.53: 877-887

32. Navara KJ. (2013) The role of steroid hormones in the adjustment of primary sex ratios in birds: Compiling the puzzle pieces.  Integrative and Comparative Biology. 53: 923-937.

31. Siefferman LM, Liu M, , Mendonça MT, Hill GE. (2013) Effect of prenatal and natal administration of testosterone on production of structurally based plumage coloration.. 86: 323-332.

30. Navara, KJ, Edwards, ML, and Anderson, EM. (2012) Comb size and color relate to sperm quality: A test of the phenotype-linked fertility hypothesis. Behavioral Ecology. 23: 1036-1041.

29. Navara, KJ and Anderson, EM. (2011) Eastern bluebirds choose nest boxes based on box orientation. Southeastern Naturalist. 10: 713-720.

28. Pinson, SE and Navara, KJ. (2011) Elevated testosterone during meiotic segregation stimulates laying hens to produce more sons than daughters. General and Comparative Endocrinology. 174: 195-201.

27. Rubolini D, Romano M, , Karadas F, Ambrosini R, Caprioli M, and Saino, N. (2011) Maternal effects mediated by egg quality in the Yellow-legged Gull in relation to laying order and embryo sex. . 8: 24-38.

26. Soley, N, Siefferman, LM, , and Hill, GE. (2011) Influence of hatch order on begging and plumage coloration of nestling eastern bluebirds. . 123: 772-778.

25. Anderson, EM and KJ. Navara (2011) Steroid hormone content of seminal plasma influences fertilizing ability in white leghorns. 90:2035-2040.

24. Pinson, SE, Parr, C, Wilson, JL, and Navara, KJ. (2011) Acute corticosterone administration during meiotic segregation stimulates females to produce more male offspring. Physiological and Biochemical Zoology. 84:292-298.

23. Gam, AE, Mendonça, MT, and Navara, KJ. (2011) Acute corticosterone treatment prior to ovulation biases offspring sex ratios towards males in zebra finches, Taeniopygia guttata. Journal of Avian Biology. 42: 253-258.

22. Navara, KJ and Pinson, SE. (2010) Yolk and albumen corticosterone concentrations in eggs laid by white versus brown caged laying hens. Poultry Science. 89: 1509-1513.

21. Navara, KJ. (2010) Programming of offspring sex ratios by maternal stress in humans: Assessment of physiological mechanisms using a comparative approach. Journal of Comparative Physiology B. 180: 785-796.

20. Huggins, KA, , Mendonça, MT, and Hill, GE. (2010) Detrimental effects of carotenoid pigments: The dark side of bright coloration. . 97: 637-644.

19. Navara, KJ, Workman, JL, Oberdick, J, and Nelson, RJ. (2010) Short day lengths skew prenatal sex ratios towards males in Siberian hamsters. Physiological and Biochemical Zoology. 83:127-134.

18. Navara, KJ. (2009) Humans at tropical latitudes produce more females. Biology Letters. 5: 524-527.

17. Navara, KJ and Nelson, RJ. (2009) Invited Review: Prenatal environmental influences on the production of sex-specific traits in mammals. Seminars in Cell and Developmental Biology. 20: 313-319.

16. Allen, LC, Turmelle, AS, Mendonça, MT, , Kunz, TH, and McCracken, GF. (2008) Roosting ecology and variation in adaptive and innate immune system function in the Brazilian free-tailed bat, Journal of Comparative Physiology B, 179: 315-323.

15. Navara, KJ and Mendonça, MT. (2008) Yolk androgens as pleiotropic mediators of physiological processes: A mechanistic review. Comparative Biochemistry and Physiology A. 150: 378-386.

14. Martin LM II, Navara KJ, Bailey MT, Hutch CR, Powell ND, Sheridan JF, and Nelson RJ. (2007) Food restriction compromises immune memory in deer mice (Peromyscus maniculatus) by reducing spleen-derived antibody-producing B cell numbers. Physiological and Biochemical Zoology. 81: 366-372.

13. Navara, KJ and Nelson, RJ. (2007) The dark side of light at night: Physiological, ecological, and epidemiological consequences. Journal of Pineal Research. 43: 215-224.

12. Navara, KJ, Trainor, BT, and RJ Nelson. (2007) Photoperiod alters macrophage responsiveness but not expression of toll-like receptors in the Siberian hamster. Comparative Biochemistry and Physiology. 148: 354-359.

11. Martin II, LB, , Weil, ZB, and Nelson, RJ. (2007) Immunological memory is compromised by food restriction in deer mice, 292:R316-R320.

10. Navara, KJ, Badyaev, AV, Mendonça, MT, and Hill, GE. (2006) Yolk antioxidants vary with male attractiveness and female condition in the house finch. Physiological and Biochemical Zoology. 79(6): 1098-1105.

9. Navara, KJ, Hill, GE, and Mendonça, MT. (2006). Yolk androgens vary inversely to maternal androgens in eastern bluebirds: An experimental study. Functional Ecology. 20: 449-456.

8. Navara, KJ, Hill, GE, and Mendonça, MT. (2006). Yolk testosterone stimulates growth and immunity in house finch nestlings. Physiological and Biochemical Zoology. 79(3): 550-555.

7. Navara, KJ, Hill, GE, and Mendonça, MT. (2006) Yolk androgen deposition as a compensatory strategy. Behavioral Ecology and Sociobiology. 60(3): 392-398.

6. Badyaev, AV, Seaman, DA, , Hill, GE, and Mendonça, MT. (2006) Evolution of sex-biased maternal effects in birds: III. Adjustment of ovulation order enables sex-specific allocation of hormones, carotenoids, and vitamins. Journal of Evolutionary Biology, 19: 1044-1057.

5. Siefferman, LM and KJ Navara. (2006) Egg coloration is correlated with female condition in Eastern Bluebirds. Behavioral Ecology and Sociobiology, 59(5): 651-656.

4. Badyaev, AV, Schwabl, H, Young, R.L., Duckworth, R.A., Parlow, AF. (2005). Adaptive sex differences in growth of pre-ovulation oocytes in a passerine bird. Proceedings of the Royal Society of London B, 272(1577):1-8.

3. Navara, KJ, Hill, GE, and Mendonça, MT. (2005).Variable effects of yolk androgens on the growth and immunity in bluebird nestlings. Physiological and Biochemical Zoology. 78(4):570-578.

2. McGraw, KJ, Hill, GE, , and Parker, RS. (2004) Differential accumulation and pigmenting ability of dietary carotenoids in colorful finches. . 77(3):484-491.

1. Navara, KJ & Hill, GE. (2003) Dietary carotenoid pigments and immune function in a songbird with extensive carotenoid-based plumage coloration. Behavioral Ecology.  14(6) 909-916.

bottom of page