Search Results - "Cogni, R"

Pyrrolizidine Alkaloids Negatively Affect a Generalist Herbivore Feeding on the Chemically Protected Legume Crotalaria pallida by Cogni, R, Trigo, J R

“…Plant secondary metabolites can have opposing effects on adapted specialist and non-adapted, generalist herbivores. In this study, we used Heliothis virescens…”
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Common-Garden Experiments Reveal Geographical Variation in the Interaction Among Crotalaria pallida (Leguminosae: Papilionideae), Utetheisa ornatrix L. (Lepidoptera: Arctiidae), and Extrafloral Nectary Visiting Ants by Franco, M S, Cogni, R

“…The study of geographical variation is a key approach to understand evolution of ecological interactions. We investigated geographical variation in the…”
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Patterns in foraging and nesting ecology in the neotropical ant, Gnamptogenys moelleri (Formicidae, Ponerinae) by COGNI, R, OLIVEIRA, P. S

“…This study provides quantitative field data on the natural history and foraging behaviour of the Neotropical bromeliad-nesting ant Gnamptogenys moelleri…”
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Influence of prey size on predation success by Zelus longipes L. (Het., Reduviidae) by Cogni, R., Freitas, A. V. L., Amaral Filho, B. F.

“…The effects of prey size on the predatory responses of the reduviid Zelus longipes were studied through laboratory tests using larvae of the noctuid moth…”
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Plant size, latitude, and phylogeny explain within-population variability in herbivory by Robinson, M. L., Hahn, P. G., Inouye, B. D., Underwood, N., Whitehead, S. R., Abbott, K. C., Bruna, E. M., Cacho, N. I., Dyer, L. A., Abdala-Roberts, L., Allen, W. J., Andrade, J. F., Angulo, D. F., Anjos, D., Anstett, D. N., Bagchi, R., Bagchi, S., Barbosa, M., Barrett, S., Baskett, C. A., Ben-Simchon, E., Bloodworth, K. J., Bronstein, J. L., Buckley, Y. M., Burghardt, K. T., Bustos-Segura, C., Calixto, E. S., Carvalho, R. L., Castagneyrol, B., Chiuffo, M. C., Cinoğlu, D., Cinto Mejía, E., Cock, M. C., Cogni, R., Cope, O. L., Cornelissen, T., Cortez, D. R., Crowder, D. W., Dallstream, C., Dáttilo, W., Davis, J. K., Dimarco, R. D., Dole, H. E., Egbon, I. N., Eisenring, M., Ejomah, A., Elderd, B. D., Endara, M.-J., Eubanks, M. D., Everingham, S. E., Farah, K. N., Farias, R. P., Fernandes, A. P., Fernandes, G. W., Ferrante, M., Finn, A., Florjancic, G. A., Forister, M. L., Fox, Q. N., Frago, E., França, F. M., Getman-Pickering, A. S., Getman-Pickering, Z., Gianoli, E., Gooden, B., Gossner, M. M., Greig, K. A., Gripenberg, S., Groenteman, R., Grof-Tisza, P., Haack, N., Hahn, L., Haq, S. M., Helms, A. M., Hennecke, J., Hermann, S. L., Holeski, L. M., Holm, S., Hutchinson, M. C., Jackson, E. E., Kagiya, S., Kalske, A., Kalwajtys, M., Karban, R., Kariyat, R., Keasar, T., Kersch-Becker, M. F., Kharouba, H. M., Kim, T. N., Kimuyu, D. M., Kluse, J., Koerner, S. E., Komatsu, K. J., Krishnan, S., Laihonen, M., Lamelas-López, L., LaScaleia, M. C., Lecomte, N., Lehn, C. R., Li, X.

“…Interactions between plants and herbivores are central in most ecosystems, but their strength is highly variable. The amount of variability within a system is…”
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Recruitment behavior during foraging in the neotropical ant Gnamptogenys moelleri (Formicidae: Ponerinae): Does the type of food matter? by Cogni, R, Oliveira, P.S

“…Gnamptogenys moelleri nests in bromeliads and feeds on an array of food items, including dead and live animals, and nectar. Field data in Brazilian forests…”
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Seed cleaning of Cupania vernalis (Sapindaceae) by ants: edge effect in a highland forest in south-east Brazil by Guimarães Jr, Paulo Roberto, Cogni, Rodrigo

“…The integrity of ecological interactions, such as pollination and seed dispersal, has been recognized as important for long-term conservation of biodiversity…”
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Interhabitat differences in ant activity on plant foliage: ants at extrafloral nectaries of Hibiscus pernambucensis in sandy and mangrove forests by Cogni, Rodrigo, Freitas, André V. L., Oliveira, Paulo S.

“…The association between visiting ants and the extrafloral nectaries (EFN)‐bearing shrub Hibiscus pernambucensis Arruda (Malvaceae) was investigated in two…”
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Galling Insects (Diptera: Cecidomyiidae) Survive Inundation during Host Plant Flooding in Central Amazonia by Cogni, R, Fernandes, G W, Vieira, DLM, Marinelli, CE, Jurinitz, C F, Guerra, B R, Zuanon, J, Venticinque, E M

“…The effect of host plant inundation on survivorship of Symmeria paniculata's galling herbivores was investigated in Central Amazonian floodplain forest. The…”
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