Laboratory of Evolutionary and Ecological Genomics

Dr. Nicole Valenzuela

Department of Ecology, Evolution, and Organismal Biology
Iowa State University
239 Bessey Hall
Ames, IA 50011
(515) 294-1285
nvalenzu@iastate.edu

Publications

Nicole Valenzuela

 


COPYRIGHT NOTICE: Reprints of published articles are provided as a service to enhance accessibility and the exchange of information. In downloading, you agree to comply with United States copyright law (Title 17, United States Code), such that the reprints are not to be "used for any purpose other than private study, scholarship, or research." All copyrights remain with the original publishers of the articles. Please make only a single copy of any article, for personal use only.

 

Updated 9/24/08

 

2009

35. Escalona, T., Engstrom T.N., Hernandez O.E., Bock B.C., Vogt R.C. and Valenzuela N. 2009. Population genetics of the endangered South American freshwater turtle, Podocnemis unifilis, inferred from microsatellite DNA data. Conservation Genetics (Accepted).

2008

34. Chinsamy, A. and Valenzuela, N. 2008. Skeletochronology of the endangered side-neck turtles Podocnemis expansa. South African Journal of Science 104(7/8): 311-314 PDF

33. Martinez, P., Ezaz T., Valenzuela, N., Georges, A., and Graves J.A.M. 2008. An XX/XY heteromorphic sex chromosome system in the Australian chelid turtle Emydura macquarii, a new piece in the puzzle of sex chromosome evolution in turtles. Chromosome Research 16(6): 815-825 PDF

32. Valenzuela, N. 2008. Sexual development and the evolution of sex determination. Sexual Development 2(2): 64-72. PDF

31. Valenzuela, N. 2008. Evolution of the gene network underlying gonadogenesis in turtles with temperature-dependent and genotypic sex determination. Integrative and Comparative Biology 48 (4): 476-485. PDF Full Text

30. Janes D.E., Organ C., and Valenzuela N. 2008. New resources inform study of genome size, content and organization in non-avian reptiles. Integrative and Comparative Biology 48(4): 447-453. PDF Full Text

29. Valenzuela, N. 2008. Relic thermosensitive gene expression in a turtle with genotypic sex determination. Evolution 62-1: 234-240. PDF

 

2007

 

28. McGaugh, S.E., Alacs E.A., Edwards S.V., Feldman C.R., Georges A., Sites, J.R.Jr., Valenzuela N. 2007. From molecules to organisms: Research applications of modern genetic tools for turtle biology and conservation. Chelonian Research Monographs 4: 47-72. PDF

27. Valenzuela, N. and Shikano T. 2007. Embryological ontogeny of Aromatase gene expression in Chrysemys picta and Apalone mutica turtles: comparative patterns within and across temperature-dependent and genotypic sex-determining mechanisms. Development, Genes and Evolution 217: 55–62. PDF

 

2006

 

26. Valenzuela, N., LeClere A., and Shikano T. 2006. Comparative expression of steroidogenic factor 1 in Chrysemys picta and Apalone mutica turtles with environmental and genotypic sex determination. Evolution and Development 8 (5): 424-432 PDF

25. Ezaz T., Valenzuela, N., Gruetzner F., Miura I., Burke R., Georges, A. and Graves J.M. 2006. Cryptic XY sex chromosome system in a GSD turtle, Chelodina longicollis (Chelidae, Reptilia). Chromosome Research 14:139-150 PDF

24. Pearse, D.E., A.D. Arndt, N. Valenzuela, B.A. Miller, V. Cantarelli, J.W. Sites, Jr. 2006. Estimating population structure under non-equilibrium conditions in a conservation context: Continent-wide population genetics of the giant Amazon river turtle Podocnemis expansa (Chelonia; Podocnemidae). Molecular Ecology 15: 985-1006  PDF

23. Valenzuela, N. 2006. (Book Review). Incubation of Reptile Eggs: Basics, Guidelines, Experiences, by Gunther Kohler. Quarterly Review of Biology 81:290-291. PDF

 

2004

 

22. BOOK: Valenzuela, N. and V. Lance, Eds. 2004. Temperature Dependent Sex Determination in Vertebrates. Smithsonian Books. Washington D.C PDF INFO

21. Valenzuela, N., D.C. Adams, R.M. Bowden, and A.C. Gauger 2004. Geometric morphometric sex estimation for hatchling turtles: a powerful alternative for detecting subtle sexual shape dimorphism. Copeia. 2004(4): 735–742 PDF

20. Valenzuela, N. 2004. Evolution and maintenance of temperature-dependent sex determination. Pp. 131-147. In Valenzuela, N. and V. Lance, Eds. Temperature Dependent Sex Determination in Vertebrates. Smithsonian Books. Washington D.C PDF

19. Valenzuela, N. 2004. Temperature-dependent sex determination. Pp. 211-227. In Deeming D.C. Ed. Reptilian Incubation: Environment & Behaviour. Nottingham University Press.

 

2003

 

18. Valenzuela, N., D.C. Adams, and F.J. Janzen. 2003. Pattern does not equal process: Exactly when is sex environmentally determined? American Naturalist 161 (4): 676-683  PDF

17. Kagima, B. W., N. Valenzuela, T. Engstrom, B. Bock. 2003. Preliminary population genetic study of the yellow spotted Amazon river turtle (Podocnemis unifilis) using microsatellite DNA data. Integrative and Comparative Biology 43: 1025-1025.

 

2001

 

16. Milne-Morjan, C. and N. Valenzuela. 2001. Is ground-nuzzling by female turtles associated with soil surface temperatures? Journal of Herpetology 35(4): 668-672  PDF

15. Valenzuela, N. and F. J. Janzen. 2001. Nest-site philopatry and the evolution of temperature-dependent sex determination. Evolutionary Ecology Research 3: 779-794  PDF

14. Valenzuela, N. 2001. Constant, shift and natural temperature effects on sex determination in Podocnemis expansa turtles. Ecology 82(11): 3010–3024  PDF

13. Valenzuela, N. 2001. Maternal effects on life history traits in the Amazonian giant river turtle Podocnemis expansa. Journal of Herpetology 35(3): 368-378 PDF

12. Valenzuela, N. 2001. Genetic differentiation among nesting beaches in the highly migratory giant river turtle (Podocnemis expansa) from Colombia. Herpetologica 57(1): 48-57   PDF

 

2000

 

11. Valenzuela, N. 2000. Multiple paternity in side-neck turtles Podocnemis expansa: evidence from microsatellite DNA data. Molecular Ecology 9: 99-106 PDF

 

1997

 

10. Adams, D. C., M. S. Di Bitetti, C. H. Janson, L. B. Slobodkin, and N. Valenzuela.  1997. An “audience effect” for ecological terminology: use and misuse of jargon. Oikos 80:632-636 PDF

9. Valenzuela, N, E. Martínez, and R. Botero.  1997. Field study of sex determination in Podocnemis expansa from Colombian Amazonia. Herpetologica 53(3):390-398   PDF

 

1995

 

8. Valenzuela, N, E. Martínez, and R. Botero. 1995. Preliminary model of sex determination of Podocnemis expansa from Colombian Amazonia. Proceedings of the International Congress of Chelonian Conservation and Biology. Pp. 276-278.

1992

 

7. Lance,V.A., N. Valenzuela and P. von Hildebrand. 1992. A hormonal method to determine the sex of hatchling giant river turtles, Podocnemis expansa. Application to endangered species research. American Zoologist 32:16A PDF

 

Undergraduate work (1990-1994)

 

6. Valenzuela, N. 1994. Early behavioral development of three wild infant Cebus apella in Colombia. Current Primatology, Volume II. Social Development, Learning and Behaviour. (Roeder, J.J., Thierry, B., Anderson, J.R. and N. Herrenschmidt, eds.). Selected Proceedings of the XIVth Congress of the IPS, Strasbourg, France, 1992. Pp. 297-302.

5. Valenzuela, N. 1993. Social contacts between infants and other group members in the wild Cebus apella. Field Studies of New World Monkeys at La Macarena, Colombia 8: 1-9 PDF

4. Valenzuela, N. 1992. Early development of three wild infant Cebus apella at La Macarena, Colombia. Field Studies of New World Monkeys at La Macarena, Colombia 6: 15-23  PDF

3. Espinel A. and N. Valenzuela. 1991. Adaptaciones genéticas a la malaria en poblaciones afroaborígenes del Pacífico Colombiano. Revista de Antropología y Arqueología. 7:117-130 PDF

2. Groot de Restrepo, H., A. Espinel, N. Valenzuela, D. Sicard, P. Angulo, and D. Nieto. 1991. Variabilidad Genética en el Género Cebus en Colombia. Proceedings of the II Congreso de Primatología, Barranquilla, Colombia.

1. Espinel A., N. Valenzuela, A. Fajardo, J. Umaña, and G. Quintero. 1990. Breve reseña de las actividades primatológicas en Colombia. Boletín Primatología Latinoamericana 2(1):62-68.

 

COPYRIGHT NOTICE: Reprints of published articles are provided as a service to enhance accessibility and the exchange of information. In downloading, you agree to comply with United States copyright law (Title 17, United States Code), such that the reprints are not to be "used for any purpose other than private study, scholarship, or research." All copyrights remain with the original publishers of the articles. Please make only a single copy of any article, for personal use only.