55. delBarco-Trillo, J. and Putman, B. (2023) Not all cities are the same: variation in animal phenotypes across cities within urban ecology studies. Urban Ecosystems. 26: 1725-1737. doi:10.1007/s11252-023-01419-8
54. Regacho, T. and delBarco-Trillo, J. (2022) Morphological stability of rural populations supports their use as controls in urban ecology studies. Urban Ecosystems. 25: 1611-1618. doi:10.1007/s11252-022-01253-4
53. Kelly, G. and delBarco-Trillo, J. (2020) Importance of taxonomic group, life stage and circumstance of rescue upon wildlife rehabilitation in Ontario, Canada. Journal for Nature Conservation. 57: 125897. doi:10.1016/j.jnc.2020.125897
52. O’Donnell, K. and delBarco-Trillo, J. (2020) Changes in the home range sizes of terrestrial vertebrates in response to anthropogenic disturbance: a meta-analysis. Journal of Urban Ecology. 6: juaa014. doi:10.1093/jue/juaa014
51. McCarthy, T. and delBarco-Trillo, J. (2020) Tardigrade abundance in relation to urbanization and highly anthropogenic substrates. Journal of Urban Ecology. 6: juaa008. doi:10.1093/jue/juaa008
50. delBarco-Trillo, J. (2019) Tardigrades in the city: a review of diversity patterns in response to urbanization. Ecological Research. 34: 872-878. doi:10.1111/1440-1703.12055
49. Drea, C., Goodwin, T. and delBarco-Trillo, J. (2019) P-mail: the information highway of nocturnal, but not diurnal nor cathemeral, strepsirrhines. Folia Primatologica. 90: 336-360. doi:10.1159/000495076
48. Byrne, F. anddelBarco-Trillo, J. (2019) The effect of management practices on bumblebee densities in hedgerow and grassland habitats. Basic and Applied Ecology. 35: 28-33. doi:10.1016/j.baae.2018.11.004
47. Starkey, A. and delBarco-Trillo, J. (2019) Supplementary feeding can attract red squirrels, Sciurus vulgaris, to optimal environments. Mammalian Biology. 94: 134-139. doi:10.1016/j.mambio.2018.05.004
46. delBarco-Trillo, J. (2018) Shyer and larger species show more reduced fear of humans when living in urban environments. Biology Letters. 14: 20170730. doi:10.1098/rsbl.2017.0730
45. delBarco-Trillo, J., Tourmente, M., Varea-Sánchez, M., and Roldan, E.R.S. (2018) Is male reproductive senescence minimised in Mus species with high levels of sperm competition? Biological Journal of the Linnean Society. 123:463-470. doi:10.1093/biolinnean/blx146
44. Ferkin, M.H., delBarco-Trillo, J. and Petrulis, A. (2017) Communication by chemical signals: Physiological mechanisms, ontogeny and learning, function, evolution and cognition. In: Hormones, Brain, and Behavior, 3rd ed (ed. Pfaff, D.W. and Joëls, M.). Elsevier, New York. doi:10.1016/B978-0-12-803592-4.00010-9
43. delBarco-Trillo, J., García-Álvarez, O., Soler, A.J., Tourmente, M., Garde, J.J. and Roldan, E.R.S. (2016) A cost for high levels of sperm competition in rodents: increased sperm DNA fragmentation. Proceedings of the Royal Society of London, B 283: 20152708. doi:10.1098/rspb.2015.2708
42. delBarco-Trillo, J., Greene, L., Goncalves, I., Fenkes, M., Wisse, J.H., Drewe, J.A., Manser, M.B, Clutton-Brock, T. and Drea, C.M. (2016) Beyond aggression: Androgen-receptor blockade modulates social interaction in wild meerkats. Hormones and Behavior. 78: 95-106. doi:10.1016/j.yhbeh.2015.11.001
41. Tourmente, M., delBarco-Trillo, J. and Roldan, E.R.S. (2015) No evidence of trade-offs in the evolution of sperm numbers and sperm size in mammals. Journal of Evolutionary Biology. 28: 1816-1827. doi:10.1111/jeb.12698
40. delBarco-Trillo, J., Mateo, R. and Roldan, E.R.S. (2015) Differences in the fatty-acid composition of rodent spermatozoa are associated to levels of sperm competition. Biology Open. 4: 466-473. doi:10.1242/bio.201411288
39. delBarco-Trillo, J. and Drea, C. (2014) Socioecological and phylogenetic patterns in the chemical signals of strepsirrhine primates. Animal Behaviour. 97: 249-253. doi:10.1016/j.anbehav.2014.07.009
38. delBarco-Trillo, J. and Roldan, E.R.S. (2014) Effects of sperm competition and metabolic rate on the fatty-acid composition of mammalian sperm. Journal of Evolutionary Biology. 27: 55-62. doi:10.1111/jeb.12275
37. Ferkin, M.H. and delBarco-Trillo, J. (2014) The behavior of female meadow voles, Microtus pennsylvanicus, during postpartum estrus and the responses of males to them. Mammalian Biology. 79: 81-89. doi:10.1016/j.mambio.2013.06.003
36. delBarco-Trillo, J., Tourmente, M. and Roldan, E.R.S. (2013) Metabolic rate limits the effect of sperm competition on spermatogenesis. Plos One. 8(9): e76510. doi:10.1371/journal.pone.0076510
35. Drea, C.M., Boulet, M., delBarco-Trillo, J., Greene, L.K., Sacha, C.R., Goodwin, T.E. and Dubay, G.R. (2013) The “secret” in secretions: methodological considerations in deciphering primate olfactory communication. American Journal of Primatology. 75: 621-642. doi:10.1002/ajp.22143
34. delBarco-Trillo, J., Harelimana, I.H., Goodwin, T.E. and Drea, C.M. (2013) Chemical differences between voided and bladder urine in the aye-aye (Daubentonia madagascariensis): Implications for olfactory communication studies. American Journal of Primatology. 75: 695-702. doi:10.1002/ajp.22083
33. delBarco-Trillo, J. and Johnston, R.E. (2013) Interactions with heterospecific males do not affect how female Mesocricetus hamsters respond to conspecific males. Animal Behaviour. 85: 151-155. doi:10.1016/j.anbehav.2012.10.019
32. Vaughn, A.A., delBarco-Trillo, J. and Ferkin, M.H. (2012) Re-feeding food-deprived male meadow voles affects the sperm allocation of their rival males. Ethology. 118: 1133-1139. doi:10.1111/eth.12016
31. Kouba, A.J., delBarco-Trillo, J., Carrie, K.V., Milam, C. and Carr, M. (2012) A comparison of human chorionic gonadotropin and luteinizing hormone releasing hormone on the induction of spermiation and amplexus in the American toad (Anaxyrus americanus). Reproductive Biology and Endocrinology. 10: 59. doi:10.1186/1477-7827-10-59
30. delBarco-Trillo, J. and Johnston, R.E. (2012) Asymmetric learning to avoid heterospecific males in Mesocricetushamsters. Zoology. 115: 270-274. doi:10.1016/j.zool.2012.01.002
29. delBarco-Trillo, J., Sacha, C.R., Dubay, G.R. and Drea, C.M. (2012) Eulemur, me lemur: the evolution of scent-signal complexity in a primate clade. Philosophical Transactions of the Royal Society B. 367: 1909-1922. doi:10.1098/rstb.2011.0225
28. delBarco-Trillo, J. (2011) Adjustment of sperm allocation under high risk of sperm competition across taxa: a meta-analysis. Journal of Evolutionary Biology. 24: 1706-1714. doi:10.1111/j.1420-9101.2011.02293.x
27. delBarco-Trillo, J. and Johnston, R.E. (2011) Avoidance of interspecific mating in female Syrian hamsters is stronger toward familiar than toward unfamiliar heterospecific males. Learning & Behavior. 39: 239-244. doi:10.3758/s13420-011-0024-8
26. delBarco-Trillo, J. and Johnston, R.E. (2011) Effect of losing a fight on later agonistic behavior toward unfamiliar conspecifics in male Syrian hamsters. Current Zoology. 57: 449-452. doi:10.1093/czoolo/57.4.449
25. delBarco-Trillo, J. and Johnston, R.E. (2011) Adult female hamsters require long and sustained exposures to heterospecific males to avoid interspecific mating. Evolutionary Ecology. 25: 391-401. doi:10.1007/s10682-010-9429-7
24. delBarco-Trillo, J., McPhee, M.E. and Johnston, R.E. (2011) Syrian hamster males below an age threshold do not elicit aggression from unfamiliar adult males. Aggressive Behavior. 37: 91-97. doi:10.1002/ab.20368
23. Vaughn, A.A., Ferkin, D.A., delBarco-Trillo, J. and Ferkin, M.H. (2011). The duration of sociosexual behaviors in male meadow voles, Microtus pennsylvanicus, varies before, during, and after copulation. Current Zoology. 57: 43-49. doi:10.1093/czoolo/57.1.43
22. delBarco-Trillo, J., Burkert, B.A., Goodwin, T.E. and Drea, C.M. (2011) Night and day: the comparative study of strepsirrhine primates reveals socioecological and phylogenetic patterns in olfactory signals. Journal of Evolutionary Biology. 24: 82-98. doi:10.1111/j.1420-9101.2010.02145.x
21. delBarco-Trillo, J., McPhee, M.E. and Johnston, R.E. (2010) Adult female hamsters avoid interspecific mating after exposure to heterospecific males. Behavioral Ecology and Sociobiology. 64: 1247-1253. doi:10.1007/s00265-010-0939-7
20. Vaughn, A.A., delBarco-Trillo, J. and Ferkin, M.H. (2010) Self-grooming by male meadow voles differs across copulation but is not affected by the risk and intensity of sperm competition. Behaviour. 147: 259-274. doi:10.1163/000579509X12523920754410
19. Ferkin, M.H. and delBarco-Trillo, J. (2010) Sex differences. In: Encyclopedia of Applied Animal Behaviour and Welfare (ed. Mills, D.S., Marchant-Forde, J.N., McGreevy, P.D., Morton, D.B., Nicol, C.J., Phillips, C.J.C., Sandoe, P., Swaisgood, R.R.). CABI, Wallingford, UK. 543-545
18. delBarco-Trillo, J. and Johnston, R.E. (2010) Fluoxetine does not prevent interspecific mating between two hamster species. Physiology & Behavior. 99: 684-686. doi:10.1016/j.physbeh.2010.02.003
17. Johnston, R.E. and delBarco-Trillo, J. (2009) Communication by chemical signals: Behavior, social recognition, hormones and the role of the vomeronasal and olfactory systems. In: Hormones, Brain and Behavior, 2nd ed (ed. Pfaff, D.W., Arnold, A.P., Etgen, A.M., Rubin, R.T. and Fahrbach, S.E.). Elsevier, New York. 395-440. https://doi.org/10.1016/B978-008088783-8.00011-5
16. delBarco-Trillo, J., Gulewicz, K. and Johnston, R.E. (2009) Medial amygdala involvement in discrimination of same-species and closely-related-species male stimuli in estrous female Mesocricetus Behavioral Neuroscience. 123: 758-763. doi:10.1037/a0016439
15. delBarco-Trillo, J., Gulewicz, K., Segal, A., McPhee, M.E. and Johnston, R.E. (2009) Can captivity lead to inter-species mating in two Mesocricetus hamster species? Journal of Zoology. 278: 308-312. doi:10.1111/j.1469-7998.2009.00577.x
14. delBarco-Trillo, J., LaVenture, A. and Johnston, R.E. (2009) Male hamsters discriminate estrous state from vaginal secretions and individuals from flank marks. Behavioural Processes. 82: 18-24. doi:10.1016/j.beproc.2009.03.003
13. delBarco-Trillo, J., McPhee, M.E. and Johnston, R.E. (2009) Nonagonistic familiarity decreases aggression in male Turkish hamsters, Mesocricetus brandti. Animal Behaviour. 77: 389-393. doi:10.1016/j.anbehav.2008.10.012
12. Vaughn, A., delBarco-Trillo, J. and Ferkin, M.H. (2008) Sperm investment in male meadow voles is affected by the condition of the nearby male conspecifics. Behavioral Ecology. 19:1159-1164. doi:10.1093/beheco/arn092
11. Ferkin, M.H., Combs, A., delBarco-Trillo, J., Pierce, A.A. and Franklin, S. (2008) Meadow voles, Microtus pennsylvanicus, have the capacity to recall the “what”, “where”, and “when” of a single past event. Animal Cognition. 11: 147-159. doi:10.1007/s10071-007-0101-8
10. Ophir, A.G. and delBarco-Trillo, J. (2007) Anogenital distance predicts female choice and male potency in prairie voles. Physiology & Behavior. 92: 533-540. doi:10.1016/j.physbeh.2007.04.030
9. delBarco-Trillo, J. and Ferkin, M.H. (2007) Increased sperm numbers in the vas deferens in response to odors of conspecific males in the meadow vole, Microtus pennsylvanicus. Behavioral Ecology and Sociobiology. 61: 1759-1764. doi:10.1007/s00265-007-0408-0
8. delBarco-Trillo, J. and Ferkin, M.H. (2007) Female meadow voles, Microtus pennsylvanicus, experience a reduction in copulatory behavior during postpartum estrus. Ethology. 113: 466-473. doi:10.1111/j.1439-0310.2007.01354.x
7. delBarco-Trillo, J. and Ferkin, M.H. (2007) Risk of sperm competition does not influence copulatory behavior in the promiscuous meadow vole (Microtus pennsylvanicus). Journal of Ethology. 25: 139-145. doi:10.1007/s10164-006-0008-x
6. delBarco-Trillo, J. and Ferkin, M.H. (2006) Female meadow voles, Microtus pennsylvanicus, cause their mates to ejaculate outside their reproductive tract. Behaviour. 143: 1425-1437. doi:10.1163/156853906779367017
5. delBarco-Trillo, J. and Ferkin, M.H. (2006) Male meadow voles respond differently to risk and intensity of sperm competition. Behavioral Ecology. 17: 581-585. doi:10.1093/beheco/ark001
4. delBarco-Trillo, J. and Ferkin, M.H. (2006) Similarities between female meadow voles mating during post-partum oestrus and raising two concurrent litters and females raising only one litter. Reproduction, Fertility and Development. 18: 751-756. doi:10.1071/RD06004
3. Ferkin, M.H., Pierce, A., Sealand, R. and delBarco-Trillo, J. (2005) Meadow voles, Microtus pennsylvanicus, can distinguish more over-marks from fewer over-marks. Animal Cognition. 8: 182-189. doi:10.1007/s10071-004-0244-9
2. delBarco-Trillo, J. and Ferkin, M.H. (2005) Two modes of input processing in relation to risk of sperm competition in mammals. Acta Zoologica Sinica. 51: 1122-1129
1. delBarco-Trillo, J. and Ferkin, M.H. (2004) Male mammals respond to a risk of sperm competition conveyed by odours of conspecific males. Nature. 431: 446-449. doi:10.1038/nature02845