1. Krebs, R. A. 1988. The mating behavior of Papilio glaucus: Papilionidae. Journal of Research on the Lepidoptera. 26:27 31.
2. Krebs, R. A. and D. A. West. 1988. The effect of female mate preference on the
evolution of female limited Batesian mimicry. Evolution 42:1101 1104.
3. Krebs, R. A. and T. A. Markow. 1989. Courtship behavior and control of reproductive isolation in Drosophila mojavensis. Evolution 43:908 913.
4. Markow, T. A., P. D. Gallagher and R. A. Krebs. 1990. Ejaculate derived nutritional contribution and female reproductive success in Drosophila mojavensis (Patterson and Crow). Functional Ecology 4:67 73.
5. Krebs, R. A. 1990. Courtship behavior and control of reproductive isolation in Drosophila mojavensis: genetic analysis of population hybrids. Behavior Genetics 20:535 543.
6. Krebs, R. A. and S. W. Rissing. 1991. Preference for larger foundress associations in the desert ant, Messor pergandei. Animal Behaviour 41:361 363.
7. Krebs, R. A. 1991. Function and genetics of long versus short copulations in the cactophilic fruit fly, Drosophila mojavensis (Diptera, Drosophilidae). Journal of Insect Behavior 4:221 233.
8. Krebs, R. A. and K. L. Bean. 1991. The mating behavior of Drosophila mojavensis on organ pipe and agria cactus. Psyche 98:101 109.
9. Krebs, R. A. and J. S. F. Barker. 1991. Coexistence of ecologically similar colonising species: Intra and interspecific competition in Drosophila aldrichi and D. buzzatii. Australian Journal of Zoology 39:579 593.
10. Krebs, R. A. 1991. Variation among Drosophila mojavensis populations for locomotor activity does not cause sexual isolation. Evolutionary Theory 10:101-107.
11. Krebs, R. A., J. S. F. Barker and T. P. Armstrong. 1992. Coexistence of ecologically similar colonising species. III. Drosophila aldrichi and D. buzzatii: performance on, and adult preference for three Opuntia species. Oecologia 92:362-372.
12. Krebs, R. A. and J. S. F. Barker. 1993. Coexistence of ecologically similar colonising species. II. Population differentiation in Drosophila aldrichi and D. buzzatii for competitive effects and responses at different temperatures, and allozyme variation in D. aldrichi. Journal of Evolutionary Biology 6:281-298.
13. Krebs, R. A. and V. Loeschcke. 1994. Effects of short-term thermal extremes on fitness components in D. melanogaster. Journal of Evolutionary Biology 7:39-49.
14. Loeschcke, V., R. A. Krebs and J. S. F. Barker. 1994. Genetic variation for tolerance and acclimation to high temperature stress in Drosophila buzzatii. Biological Journal of the Linnean Society 52: 83-92.
15. Krebs, R. A. and V. Loeschcke. 1994. Costs and benefits of activation of the heat shock response in Drosophila melanogaster. Functional Ecology 8: 730-737.
16. Krebs, R. A. and J. S. F. Barker. 1995. Larval age differences and competition between Drosophila aldrichi and D. buzzatii. Ecological Entomology 20: 60-64.
17. Dahlgaard, J., R. A. Krebs and V. Loeschcke. 1995. Inbreeding and heat-shock tolerance in Drosophila buzzatii. Heredity 74: 157-163.
18. Barker, J. S. F. and R. A. Krebs. 1995. Genetic variation and plasticity of thorax length and wing length in Drosophila aldrichi and D. buzzatii. Journal of Evolutionary Biology 8: 689-709.
19. Krebs, R. A., and V. Loeschcke. 1995. Resistance to thermal stress in adult Drosophila buzzatii: Acclimation and variation among populations. Biological Journal of the Linnean Society 56: 505-515.
20. Krebs, R. A., and V. Loeschcke. 1995. Resistance to thermal stress in preadult Drosophila buzzatii: variation among populations and relative resistance across life stages. Biological Journal of the Linnean Society 56: 517-531.
21. Krebs, R. A. and V. Loeschcke. 1996. Selection for increased resistance and acclimation to thermal stress in Drosophila buzzatii. Genetics 142: 471-479.
22. Krebs, R. A., V. La Torre, V. Loeschcke and S. Cavicchi. 1996. Heat shock resistance in Drosophila populations: analysis of variation in reciprocal cross progeny. Hereditas 124: 47-55.
23. Feder, M. E., N. V. Cartaño, L. Milos, R. A. Krebs and S. L. Lindquist. 1996. Effect of engineering Hsp70 copy number on Hsp70 expression and tolerance of ecologically relevant heat shock in larvae and pupae of Drosophila melanogaster. Journal of Experimental Biology 199: 1837-1844.
24. Loeschcke, V. and R. A. Krebs. 1996. Selection for heat-shock resistance in larval and adult Drosophila buzzatii: comparing direct and indirect responses on viability and development. Evolution 50: 2354-2359.
25. Krebs, R. A. and M. E. Feder. 1997. Natural variation in the expression of the heat-shock protein Hsp70 in a population of Drosophila melanogaster, and its correlation with tolerance of ecologically relevant stress. Evolution 51: 173-179.
26. Krebs, R. A. and M. E. Feder. 1997. Negative consequences of Hsp70 overexpression in Drosophila melanogaster larvae. Cell Stress & Chaperones 2: 60-71.
27. Krebs, R. A. and M. E. Feder. 1997. Tissue specific variation in Hsp70 expression following thermal damage in Drosophila melanogaster larvae. Journal of Experimental Biology 200: 2007-2015.
28. Krebs, R. A. and V. Loeschcke. 1997. Estimating heritability in a threshold trait: Heat-shock tolerance in Drosophila buzzatii. Heredity 79: 252-259.
29. Guerra, D., S. Cavicchi, R. A. Krebs and V. Loeschcke. 1997. Resistance to heat and cold stress in Drosophila melanogaster: inter and intra-population variation Genetics, Selection and Evolution 29:497-510.
30. Feder, M. E. and R. A. Krebs. 1998. Natural and genetic engineering of the heat-shock protein Hsp70 in Drosophila melanogaster: Consequences for thermotolerance. American Zoologist 38: 503-517.
31. Krebs, R. A. and M. E. Feder. 1998. Experimental manipulation of the cost of thermal acclimation in Drosophila melanogaster. Biological Journal of the Linnean Society 63: 593-601.
32. Krebs, R. A., M. E. Feder and J. Lee. 1998. Heritability of expression of the 70kd heat-shock protein in Drosophila melanogaster and its relevance to the evolution of thermotolerance. Evolution 52: 841-847.
33. Krebs, R. A. and M. E. Feder. 1998. Hsp70 and larval thermotolerance in Drosophila melanogaster: How much is enough and when is more too much? Journal of Insect Physiology 44: 1091-1101.
34. Krebs, R. A. and V. Loeschcke. 1999. A genetic analysis of the relationship between life-history variation and heat-shock tolerance in Drosophila buzzatii. Heredity 83: 46-53.
35. Krebs, R. A. 1999.A comparison of Hsp70 expression and thermotolerance in adults and larvae of three Drosophila species. Cell Stress & Chaperones 4: 243-249.
36. Krebs, R. A. and Bettencourt, B. R. 1999. The evolution of thermotolerance and variation in the heat shock protein, Hsp70. American Zoologist 39:910-919.
37. Krebs, R. A. and S. Holbrook. 2001. Reduced enzyme activity following Hsp70 overexpression in Drosophila melanogaster. Biochemical Genetics 39: 73-82.
38. Krebs, R. A., S. P. Roberts, B. R. Bettencourt and M. E. Feder. 2001. Changes in thermotolerance and Hsp70 expression with domestication in Drosophila melanogaster. Journal of Evolutionary Biology 14: 75-82.
39. Patton, Z. J. and R. A. Krebs. 2001. The effect of thermal stress on the mating behavior of three Drosophila species. Physiological and Biochemical Zoology 74: 783-788.
40. Tevesz, M. J. S., L. Rundo, R. A. Krebs, B. G. Redman and A. S. DuFresne. 2002. Changes in the freshwater mussel (Bivalvia: Unionidae) fauna of the Cuyahoga River, Ohio, since late prehistory. Kirtlandia 53: 13-18.
41. Tevesz, M. J. S., L. Rundo and R. A. Krebs. 2002. Freshwater mussels (Bivalvia: Unionidae) of the Ohio & Erie Canal, Cuyahoga Valley National Park, Ohio. Kirtlandia 53: 35-36.
42. Krebs, R. A., H. M. Griffith and M. J. S. Tevesz. 2002. A study of the Unionidae of Tinkers Creek Ohio. Kirtlandia 53: 19-25.
43. Smith, D. C., M. A. Gates, R. A. Krebs, and M. J. S. Tevesz. 2002. A survey of freshwater mussels (Unionidae) and other molluscs in the Cuyahoga Valley National Park. Ohio Biological Survey, Miscellaneous Contribution No. 8: iv-31p.
44. Krebs, R. A., R. N. Vlasceanu and M. J. S. Tevesz. 2003. An analysis of diversity in freshwater mussels (Bivalvia: Unionidae) of the Cuyahoga and Rocky River watersheds (Ohio, USA) based on the 16S rRNA gene. Journal of Great Lakes Research 29: 307-316.
45. Krebs, R. A. 2004. Combining paternally and maternally inherited mitochondrial DNA for analysis of population structure in mussels. Molecular Ecology 13: 1701-1705.
46. Fasolo, A. G. and R. A. Krebs. 2004. Behavioural variation in Drosophila during exposure to thermal stress. Biological Journal of the Linnean Society 83: 197-205.
47. Barker, J. S. F., R. A. Krebs and H. I. Davies. 2005. Geographical distributions, relative abundance and coexistence of Drosophila aldrichi and D. buzzatii in Australia. Austral Ecology 30: 546-557.
48. Krebs, R. A. and K. A. Thompson. 2005. A genetic analysis of variation for the ability to fly after exposure to thermal stress in Drosophila mojavensis. Journal of Thermal Biology 30: 335-342.
49. Huehner, M. K., Krebs, R. A., Zimmerman, G., and Mejia, M. 2005. The Unionid mussel fauna of northeastern Ohio¿s Grand River. Ohio Journal of Science 105: 57-62.
50. Krebs, R. A. and L. J. Rundo. 2005. Diversity of Unionidae in the Rocky River, Ohio. Journal of Freshwater Ecology 20: 603-608.
51. Krebs, R. A. and K. A. Thompson. 2006. Direct and correlated effects of selection on flight after exposure to thermal stress in Drosophila melanogaster. Genetica 128: 217-225.
52. Lyons, M. S., R. A. Krebs, J. P., Holt, L. J Rundo and W. Zawiski. 2007. Assessing causes of change in the freshwater mussels (Bivalvia: Unionidae) in the Black River, Ohio. American Midland Naturalist 158: 1-15.
53. Yasick, A. L., R. A. Krebs and J. A. Wolin. 2007. The effect of dispersal ability in winter and summer stoneflies on their genetic differentiation. Ecological Entomology 32: 399-404.
54. Milligan, J. R., R. A. Krebs and T. K. Mal. 2008. Separating developmental and environmental effects on fluctuating asymmetry in Lythrum salicaria and Penthorum sedoides. International Journal of Plant Sciences. 169: 625-630.
55. Rashleigh, R., R. A. Krebs, and H. van Keulen. 2008 (2009). Population structure of coyote (Canis latrans) in urban landscape (Cleveland, Ohio, USA). Ohio Journal of Science, 4:54-59.
56. Borden, W. C. and R. A. Krebs. 2009. Phylogeography and postglacial dispersal of smallmouth bass (Micropterus dolomieu, Centrarchidae) into the Great Lakes. Canadian Journal of Fisheries and Aquatic Sciences 66: 2142-2156.
57. Krebs, R. A., W. C. Borden, E. R. Steiner, M. S. Lyons, W. Zawiski, and B. M. Walton. 2010. Determinants of mussel diversity in Lake Erie tributaries. Journal of the North American Benthological Society 29: 506-520.
58. Gouch, D. A., M. S. Lyons, and R. A. Krebs. 2010. Evidence for decline in the Unionidae of the East Branch Rocky River, Ohio. Kirtlandia 57:82-86.
59. Krebs, R. A., J. D. Hook, M. A. Hoggarth, and B. M. Walton. 2010. Evaluating the mussel fauna of the Chagrin River, A state listed ¿scenic¿ river in Ohio. Northeastern Naturalist, 17: 565-574.
60. Crail, T. D. R. A. Krebs and D. T. Zanatta. 2011. Unionid mussels from nearshore zones of Lake Erie. Journal of Great Lakes Research, 37:199-202.
61. Sampson, D. A. and R. A. Krebs. 2012. Quantitative evaluation of reciprocal herkogamy in the distylous species, Hedyotis caerulea (Rubiaeceae). Plant Systematics and Evolution 298: 1361-1370.
62. Krebs, R. A., W. C. Borden, N. M. Evans and F. P. Doerder. 2013. Differences in population structure between maternally- and paternally-inherited forms of mitochondria in Lampsilis siliquoidea (Bivalvia: Unionidae). Biological Journal of the Linnean Society 109: 229¿240. Article first published online : 25 JAN 2013, DOI: 10.1111/bij.12025
63. Kenega, B. A., R. A. Krebs, and W. B. Clapham, Jr. 2013. Coyote land use inside and outside urban parks. American Midland Naturalist 170: 298¿310.
64. Sampson, D. A. and R. A. Krebs. 2013. Developmental variation and distyly in Hedyotis caerulea (Rubiaceae). SpringerPlus 2(1) http://dx.doi.org/10.1186/2193-1801-2-383.
65. Scott, M. W., M. T. Begley, R. A. Krebs, and D. T. Zanatta. 2014. Mitochondrial DNA variation in the Eastern Pondmussel, Ligumia nasuta (Bivalvia: Unionoida) in the Great Lakes region. Walkerana, 17: 60-67.
66. Burlakova, L. E., B. L. Tulumello, A. Y. Karatayev, R. A. Krebs, D. W. Schloesser, D. T. Zanatta, W.L. Paterson, T. A. Griffith, M. W. Scott, and T. Crail. 2014. Competitive replacement of invasive congeners may relax impact on native species: interactions among zebra, quagga, and native unionid mussels. PLOS-ONE 9(12): e114926 doi: 10.1371/journal.pone.0114926
67. Krebs, R.A., E. M. Barkett, and M.T. Begley. 2015. The impact of dreissenid mussels on growth of Leptodea fragilis, the most abundant unionid species in Lake Erie. Canadian Journal of Zoology 93(2): 143-148, 10.1139/cjz-2014-0215
68. Yasick, A. L., R. A. Krebs and J. A. Wolin. 2015. Colonization of Lake Erie tributaries by Allocapnia recta (Capniidae). Illiesia 11:41-50. http://illiesia.speciesfile.org/papers/Illiesia11-05.pdf
69. Krebs, R. A., B. D. Allen, N. M. Evans and D. T. Zanatta. 2015. Mitochondrial DNA structure of Pyganodon grandis (Bivalvia: Unionidae) from the Lake Erie watershed and selected locations in its northern distribution. American Malacological Bulletin 33: 5-13. doi: 10.4003/006.033.0105
70. Zanatta, D. T. , J. Bossenbroek, L. E. Burlakova, T. Crail, F. de Szalay, T. A. Griffith, D. Kapusinski, A.Y. Karateyev, R. A. Krebs, E. S. Meyer, W. L. Paterson, T. J. Prescott, M.T. Rowe, D. W. Schloesser, M. C. Walsh. 2015. Distribution of native mussel (Unionidae) assemblages in coastal Lake Erie, Lake St. Clair, and Connecting Channels, twenty-five years after a dreissenid invasion. Northeastern Naturalist 22: 223-235. DOI: 10.1656/045.022.0115
71. Paterson, W. L., T. A. Griffith, R. A. Krebs, L.E. Burlakova and D. T. Zanatta. 2015. Genetic structure of mapleleaf mussels (Quadrula quadrula) in Lake Erie and its tributaries. Journal of Great Lakes Research (out on line)
Invited book chapters
1. Krebs, R. A., J. S. F. Barker and R. Halliburton. 1991. Variation, natural selection and evolution. pp. 329 345. In: Australian Academy of Science, Biology, the Common Threads. Canberra, Australia.
2. Krebs, R. A. and V. Loeschcke. 1994. Response to environmental change: genetic variation and fitness in Drosophila buzzatii following temperature stress. pp. 309-321 In: V. Loeschcke, J. Tomiuk and S. K. Jain, Conservation Genetics, Birkhäuser.
3. Feder, M. E. and R. A. Krebs. 1997. Ecological and evolutionary physiology of heat-shock proteins and the stress response in Drosophila: Complementary insights from genetic engineering and natural variation. pp. 155-173 In Bijlsma, R. and V. Loeschcke, Stress, Adaptation and Evolution, Birkhäuser Verlag, Basel.
4. Loeschcke, V., R. A. Krebs, J. Dahlgaard and P. Michalak. 1997. High temperature stress and the evolution of thermal resistance. pp. 175-190 In Bijlsma, R. and V. Loeschcke, Stress, Adaptation and Evolution, Birkhäuser Verlag, Basel.
5. Tevesz, M. J. S. and R. A. Krebs. 2008. Freshwater Mussels of the Vermilion River. pp. 66-69 In M.C. Garvin and J.A. Cooper (eds.), Living in the Vermilion River Watershed, Western Reserve Land Conservancy, Firelands Chapter, Oberlin College, Ohio.
6. Krebs, R. A. 2015. Atlas of the Freshwater Mussels (Unionidae) (Class Bivalvia: Order Unionoida) Recorded at the Old Woman Creek National Estuarine Research Reserve & State Nature Preserve, Ohio and surrounding watersheds, Ohio Department of Natural Resources, Division of Wildlife, Huron, Ohio, 41 pp. [Initial version, 2009, http://wildlife.ohiodnr.gov/portals/wildlife/pdfs/public%20areas/OWCAtlas_Mussels.pdf]