Cogni, R., K. Kuczynski, S. Koury, E. Lavington, E. L. Behrman, K. R. O'Brien, P. S. Schmidt & W. Eanes, 2017. On the Long-term Stability of Clines in Some Metabolic Genes in Drosophila melanogaster. Scientific Reports DOI: 10.1038/srep42766PDF

Cogni, R.*, C. Cao*, J. Day, C. Bridson & F. Jiggins, 2016. The genetic architecture of resistance to virus infection in Drosophila. Molecular Ecology DOI: 10.1111/mec.13769 * shared first author PDF

Martinez*, J., R. Cogni*, C. Cao, S. Smith, C. J. R. Illingworth, F. M. Jiggins, 2016 Addicted? Reduced host resistance in populations with defensive symbionts. Proceedings of the Royal Society of London B: Biological Sciences 283: 20160778. * shared first author PDF

Cogni, R. & J. R. Trigo, 2016. Pyrrolizidine Alkaloids Negatively Affect a Generalist Herbivore Feeding on the Chemically Protected Legume Crotalaria pallida. Neotropical Entomology 45(3):252-527. PDF

Cogni, R., K. Kuczynski, E. Lavington, E. S. Koury, E. L. Behrman, K. R. O’Brien, P. Schmidt & W. F. Eanes, 2015. Variation in Drosophila melanogaster central metabolic genes appears driven by natural selection both within and between populations. Proceedings of the Royal Society of London B: Biological Sciences 282: doi 10.1098/rspb.2014.2688 PDF

Longdon, B., J. D. Hadfield, J. P. Day, S. C. L. Smith, J. E. McGonigle, R. Cogni, C. Cao, F. M. Jiggins, 2015. The causes and consequences of changes in virulence following pathogen host shifts. PLoS Pathogens 11(3): e1004728. doi:10.1371/journal.ppat.1004728. PDF

Lavington, E., Cogni, R., K. Kuczynski, S. Koury, E. L. Behrman, K. R. O’Brien, P. Schmidt & W. F. Eanes, 2014. A small system – high resolution study of metabolic adaptation in the Central metabolic pathway to temperate climates in Drosophila melanogaster. Molecular Biology and Evolution 31: 2032-2041 doi: 10.1093/molbev/msu146. PDF

Cogni, R., K. Kuczynski, S. Koury, E. Lavington, E. L. Behrman, K. R. O'Brien, P. Schmidt & W. F. Eanes, 2014. The intensity of selection acting on the couch potato gene - spatial-temporal variation in a diapause cline. Evolution 68: 538-548. PDF

Franco, M. S. & R. Cogni, 2013. Common-garden experiments reveal geographical variation in the interaction among Crotalaria pallida (Leguminosae: Papilionideae), Utetheisa ornatrix L. (Lepidoptera: Arctiidae), and extrafloral nectary visiting ants. Neotropical Entomology 42: 223-229. PDF

Hoina, A., C. H. Z. Martins, J. R. Trigo & R. Cogni, 2013. Preference for high concentrations of plant pyrrolizidine alkaloids in the specialist arctiid moth Utetheisa ornatrix depends on previous experience. Arthropod-Plant Interactions 7: 169-175. PDF

Cogni, R., J. R. Trigo & D. J. Futuyma, 2012. A free lunch: no costs for acquiring defensive plant alkaloids in an arctiid moth (Utetheisa ornatrix). Molecular Ecology 21: 6152-6162. PDF

Cogni, R., J. R. Trigo & D. J. Futuyma, 2011. Varying herbivore population structure correlates with lack of local adaptation in a geographic variable plant-herbivore interaction. PLoS ONE 6(12): e29220. doi:10.1371/journal.pone.0029220 PDF

Cogni, R. 2011. Book review: Experimental Evolution by Garland & Rose. Journal of Experimental Marine Biology and Ecology 396: 253-254. PDF

Cogni, R., 2010. Biotic resistance to plant invasion? A native specialist herbivore shows preference for and higher fitness on an introduced host. Biotropica 42: 188-193. PDF

Cogni, R. & D. J. Futuyma, 2009. Local adaptation in a plant herbivore interaction depends on the spatial scale. Biological Journal of the Linnean Society 97: 494-502. PDF

Cogni, R. & P. S. Oliveira, 2004. Recruitment behavior during foraging in the neotropical ant Gnamptogenys moelleri (Formicidae: Ponerinae): does the type of food matter? Journal of Insect Behavior 17: 443-458. PDF

Cogni, R. & P. S. Oliveira, 2004. Patterns in foraging and nesting ecology in the arboreal neotropical ponerine ant, Gnamptogenys moelleri. Insects Sociaux 51: 123-130. PDF

Cogni, R., A. V. L. Freitas & P. S. Oliveira, 2003. Interhabitat differences in ant activity on plant foliage: Ants at extrafloral nectaries of Hibiscus pernambucensis in a sandy and mangrove forest. Entomologia Experimentalis et Applicata 107: 125-131. PDF

Bonato, V., R. Cogni & E. M. Venticinque, 2003. Ants nesting on Cecropia purpurascens (Cecropiaceae) in Central Amazonia: Influence of tree height, domatia volume and food bodies. Sociobiology 42: 719-727. PDF

Cogni, R., G. W. Fernandes, D. L. M. Vieira, C. E. Marinelli, C. F. Jurinitz, B. R. Guerra, J. Zuanon & E. M. Venticinque, 2003. Galling insects (Diptera: Cecidomyiidae) survive inundation during host plant flooding in Central Amazonia. Biotropica 35: 115-119. PDF

Cogni, R., A. V. L. Freitas & B. F. Amaral-Filho, 2002. Influence of prey size on predation success by Zelus longipes (Heteroptera: Reduviidae). Journal of Applied Entomology 126: 74-78. PDF

Guimaraes, P. R. & R. Cogni, 2002. Seed cleaning of Cupania vernalis (Sapindaceae) by ants: edge effect in a highland forest in Southeast Brazil. Journal of Tropical Ecology 18: 303-307. PDF

Cogni, R. & A. V. L. Freitas, 2002. The ant assemblage visiting extrafloral nectaries of Hibiscus pernambucensis (Malvaceae) in a mangrove forest in Southeast Brazil (Hymenoptera: Formicidae). Sociobiology 40: 373-383. PDF

Cogni, R., R. L. G. Raimundo & A. V. L. Freitas, 2000. Daily activity of ants associated with the extrafloral nectaries of Turnera ulmifolia (Turneraceae) in a suburban area of Southeast Brazil. Entomologist's Monthly Magazine 136: 141-147. PDF