Dr. Claudio Ramírez

LÍNEA DE INVESTIGACIÓN

Mi interés se centra en las interacciones insecto-planta desde una perspectiva que aborda causas proximales (ecológicas) y distales (evolutivas). Esta aproximación pretende contribuir al conocimiento de los patrones de herbívoría observados en sistemas naturales y productivos. Desde el punto de vista de las causas proximales, me interesan particularmente los mecanismos conductuales y morfológicos de los insectos respecto de sus patrones alimentarios, así como los mecanismos de defensas químicas y morfológicas de las plantas en respuesta al ataque de insectos fitófagos. En relación a las causas distales, me interesa la asociación correlacional o experimental entre los mecanismos proximales y parámetros reproductivos de los pares interactuantes. Estos aspectos los he estudiado en insectos hemipteros de la Aphididae, los cuales constituyen en Chile importantes plagas de cultivos. Los patrones de herbivoría de especies nativas de este grupo de insectos son también parte de mi interés
Web: Centro de Ecología Molecular (CEM)

PUBLICACIONES (Últimos 5 años)

Barrios-San Martín, J., Bosquée, E., Rubio-Meléndez, M. E., Ramírez, C. C., Francis, F. (2017). Proteomic profile of aphids exposed to wheat with different contents of benzoxazinoids. Physiological Entomology, DOI:10.1111/phen.12230

Rubio-Meléndez, M. E., Sepúlveda, D. A. and Ramírez, C. C. (2017). Temporal and spatial distribution of insecticide resistant mutations in the green peach aphid, Myzus persicae (Hemiptera: Aphididae) on primary and secondary host-plants in central Chile. Pest Management Science. doi:10.1002/ps.4708.

Salgado P., Prinz K., Finkeldey R., Ramirez C.C., Vogel H. (2017) Genetic variability of Aristotelia chilensis (“maqui”) based on AFLP and chloroplast microsatellite markers. Genetic Resources and Crop Evolution, pp. 1-9. DOI: 10.1007/s10722-017-0498-0

Sepúlveda D.A., Zepeda-Paulo F., Ramírez C.C., Lavandero B., Figueroa C.C. (2017). Loss of host fidelity in highly inbred populations of the parasitoid wasp Aphidius ervi (Hymenoptera: Braconidae). Journal of Pest Science, 90:649-658.

Sepúlveda D.A., Zepeda-Paulo F., Ramírez C.C., Lavandero B., Figueroa C.C. (2017). Diversity, frequency, and geographic distribution of facultative bacterial endosymbionts in introduced aphid pests. Insect Science, 24: 511-521.

Verdugo J. A., Francis F., Ramírez, C.C. (2016). A review on the complexity of insect-plant interactions under varying levels of resources and host resistance: the case of Myzus persicae-Prunus persica. Biotechnol. Agron. Soc. Environ. 20(4): 533-541

Barrios-San Martín, J., Figueroa, C.C., Ramírez, C.C. (2016). Evidence of plastic probing behavior in a ‘superclone’ of the grain aphid Sitobion avenae. Bulletin of Entomological Research 106(6):801-808.

González-González A., Palma-Millanao R., Yáñez O., Rojas M., Mutis A., Venthur H., Quiroz A., Ramírez C.C. (2016). Virtual screening of plant volatile compounds reveals a high affinity of Hylamorpha elegans (Coleoptera: Scarabaeidae) odorant-binding proteins for sesquiterpenes from its native host. Journal of Insect Science, 16: 1–15.

Verdugo J.A., Sauge M.E., Lacroze J.P., Francis F., Ramírez C.C. (2015). Drought-stress and plant resistance affect herbivore performance and proteomic: the case of the green peach aphid Myzus persicae (Hemiptera: Aphididae). Physiological Entomology, 40: 265-276.

Tapia, D.H., Silva, A.X., Ballesteros, G.I. Figueroa, C.C., Niemeyer, H.M. & Ramírez, C.C. 2015. Differences in learning and memory of host-plant features between specialist and generalist phytophagous insects. Animal Behaviour. 106:1-10.

Adasme-Carren~o, F. Mun~oz-Gutie´rreza, C. Salinas-Cornejo, J. Ramírez, C.C. 2015. A2EPG: A new software for the analysis of electrical penetration graphs to study plant probing behaviour of hemipteran insects. Computers and Electronics in Agriculture 113:128-135.

Reyes, M., Barros-Parada, W. Ramírez, C.C., Fuentes-Contreras, E. 2015. Organophosphate resistance and its main mechanism in populations of codling moth (Lepidoptera: Tortricidae) from Central Chile. Journal of Economic Entomology 107, 268–276.

Cabrera-Brandt, M. A., Verdugo, J. A., Ramírez, C. C., Lacroze, J. P., Sauge, M. H. & Figueroa, C. C. 2015. Intra-specific variation of behavioral signals in suppressing plant defenses in the green peach aphid Myzus persica, feeding on the resistant wild peach Prunus davidiana. Journal of Pest Science: 1-8.

Fuentes-Contreras, E., Basoalto, E., Franck, P., Lavandero, B., Knight, A. L. & Ramírez, C. C. 2014. Measuring local genetic variability in populations of codling moth (Lepidoptera: Tortricidae) across an unmanaged and commercial orchard interface. Environmental Entomology 43, 520-527.

San Martin, J., Quiroz, A., Verdugo, J.A., Parra, L. Hormazabal, E., Astudillo, L.A., Rojas-Herrera, M., Ramirez, C.C. 2014. Host selection and probing behavior of the poplar aphid Chaitophorus leucomelas (Sternorrhyncha: Aphididae) on two poplar hybrids with contrasting susceptibility to aphids. Journal of Economic Entomology 107, 268–276.

Rubiano-Rodríguez, J.A., Fuentes-Contreras, E., Figueroa, C.C. Margaritopoulos, J.T., Briones, L.M., Ramírez, C.C. 2014. Genetic diversity and insecticide resistance during the growing season in the green peach aphid (Hemiptera: Aphididae) on primary and secondary hosts: a farm-scale study in Central Chile. Bulletin of Entomological Research 104, 182–194.

Ortiz-Martínez, S. A., Ramírez, C. C. & Lavandero, B. 2013. Host acceptance behavior of the parasitoid Aphelinus mali and its aphid-host Eriosoma lanigerum on two Rosaceae plant species. Journal of Pest Science 86(4): 659-667.

PROYECTOS

Núcleo Milenio en Ecología Molecular y AplicacionesEvolutivas en Agroecosistemas (2013-2016), NC120027. Iniciativa Científica Milenio. Sub-Director.

Fondecyt Regular Nº 1131008 (2013-2017): Genetic diversity and phenotypic plasticity of “superclones” of main aphid pest species in Chile: searching for causes of their success. Main researcher.

Fondecyt Regular N° 1130483 (2013-2017) Molecular mechanisms underpinning host-adaptation in a parasitoid wasp: a novel approach to increase the efficacy of biological control. Co-investigador.

Fondecyt Regular N° 1110341 (2011-2014): Putative host refuges for Aphidiuservi: colonization of early season crop fields from adjacent natural habitats. Co-investigador.

Fondecyt Regular N° 1100746 (2010-2013): Outbreaks and resurgences of the green peach aphid Myzuspersicae (Sulzer) in peaches and nectarines orchards: where do the aphids come from?Main researcher.

MEC 80112012 (2010) Ecología y microevolución de lasplagasinstroducidas a Chile: El caso del pulgónmásdañinoque ha llegado a Chile. Main researcher.

Ecos-Conicyt C08B02 (2009-2011): Influence of sexualreproduction on the genetic architecture of life history traits using aphids as model systems. Co-researcher.

Fondecyt Grant Nº 1071029 (2007-2010): Gene flow assessment and the relation with insecticide resistance to the codling moth (Cydiapomonella). Co-researcher.