Associate professor/Profesor Adjunto

Director of Virology Laboratory/Directora Laboratorio de Virología

Institute of Chemistry and Biochemistry/Instituto de Química y Bioquímica

Contact information/Información de contacto

  • Work address/Dirección institucional: Avenida Gran Bretaña 1111, 6° piso, Playa Ancha, Valparaíso.
  • phone/Teléfono: 56-32-2508063
  • e-mail/Correo electrónico:


Teaching experience/Docencia

Undergraduates courses includes subjects in the area of ​​Environmental Chemistry, Biochemistry, Virology and Bioinformatics to the Bachelor of Science majors in Chemistry, Environmental Engineering and Marine Biology.

Postgraduate courses, included in the interdisciplinary Doctorate in Environmental Sciences are:  Environmental Sciences from the Interdisciplinary Perspective and Environmental Biogeochemistry and contribution of Microorganisms.

La docencia que realizo para pre-grado incluye asignaturas en el área de la Química Ambiental, Bioquímica, Virología  y Bioinformática a las carreras de Licenciatura en Ciencias mención Química, Ingeniería Ambiental  y Biología Marina.

En postgrado realizo docencia en el Doctorado interdisciplinario en Ciencias Ambientales, en el curso troncal: Ciencias Ambientales desde la Perspectiva Interdisciplinar y electivo: Biogeoquímica Ambiental y contribución de los Microorganismos.

Research areas/Líneas de Investigación

Within the framework of the Fondecyt project 1211977, I carry out research in microbial ecology, with emphasis on viral ecology.

En el marco del proyecto Fondecyt 1211977, realizo investigación en ecología microbiana, con énfasis en ecología viral.

Graphical abstract of the dynamics between microorganisms and viruses in the Salar de Huasco. Resumen gráfico de la dinámica entre microorganismos y virus en el Salar de Huasco.
















Investigation areas/Áreas de Investigación 

  • Virology/Virología
  • Microbial Ecology/Ecología Microbiana
  • Molecular Biology/Biología Molecular
  • Biological Oceanography/Oceanografía Biológica

Current projects/Proyectos vigentes

  • “RLA5086: Decreasing the Mortality of Rainbow Trout Associated with Infectious Pancreatic Necrosis Virus and Emerging Diseases Using Molecular and OMIC Techniques (ARCAL CLXXV)” Colaboradora Externa, como Directora Laboratorio de referencia para IPNV.
  • Proyecto Fondecyt No 1211977 (2021-2025):  “Methane and ammonia oxidation interactions and their effect on greenhouse gases in ecosystems with diverse methane and nitrogen sources”. Co-investigadora.


  1. Hualong Wang, Feilong Liu, Min Wang, Yvan Bettarel, Eissler Y, Feng Chen, and Jinjun Kan. 2024. Planktonic eukaryotes in the Chesapeake Bay: Contrasting responses of abundant and rare taxa to estuarine gradients. Microbiology Spectrum:e04048-23.
  2. Eissler, Y, Castillo-Reyes A, Dorador C, Cornejo-D’Ottone, M, Celis-Plá, P S-M, Aguilar P, Molina V. Virus-to-prokaryote ratio in the Salar de Huasco and different ecosystems of the Southern hemisphere and its relationship with physicochemical and biological parameters. (2022). Front. Microbiol., 18 August 2022, Sec. Systems Microbiology,
  3. Tapia, DEissler, YReyes-Lopez, FEKuznar, JYáñez, JMInfectious pancreatic necrosis virus in salmonids: Molecular epidemiology and host response to infectionRev Aquac2021001– 19
  4. Molina V, Eissler Y, Fernandez C, Cornejo-D’Ottone M, Dorador C, Bebout BM, Wade HJ, Romero C, Hengst M. (2021). Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland. STOTEN. Volume 768, 10 May 2021, 144370.
  5. Eissler Y, Dorador C, Kieft B, Molina V, Hengst M. (2020). Virus and Potential Host Microbes from Viral-Enriched Metagenomic Characterization in the High-Altitude Wetland, Salar de Huasco, Chile. Microorganims, 2020, 8(7), 1077.
  6. Dorador, C., Molina, V., Hengst, M., Eissler, Y., Cornejo, M., Fernández, C., Pérez, V. (2020). Microbial communities composition, activity and dynamics at Salar de Huasco, a polyextreme environment in the Chilean Altiplano. In: Extremophile microbial ecosystems in central Andes extreme environments. ME Farias (Ed). Springer, series: Cellular Origin, Life in Extreme Habitats and Astrobiology. https://doi: 10.1007/978-3-030-36192-1
  7. Eissler Yoanna, María-Jesús Gálvez, Cristina Dorador, Martha Hengst, Verónica Molina (2019). Active microbiome structure and its association with environmental factors and viruses at different aquatic sites of a High Altitude Wetland. Microbiology Open,
  8. Molina V, Eissler Y, Cornejo M, Galand PE, Dorador C, Hengst M, Fernandez C, Francois JP. (2018). Distribution of greenhouse gases in hyper-arid and arid areas of northern Chile and the contribution of the high altitude wetland microbiome (Salar de Huasco, Chile). Antonie van Leeuwenhoek, 1-12.
  9. Molina, V., C Dorador, C Fernández, L Bristow, Y Eissler, M Hengs, K Hernandez, LM Olsen, C Harrod, F Marchant, C Anguita, M Cornejo. (2018). The activity of nitrifying microorganisms in a high altitude Andean wetland. FEMS Microbiology Ecology. 94, 2018, fiy062. doi: 10.1093/femsec/fiy062
  10. David Tapia, Yoanna Eissler, Juan Carlos Espinoza, Juan Kuznar. Inter-laboratory ring trial to evaluate real-time reverse transcription polymerase chain reaction methods used for detection of infectious pancreatic necrosis virus in Chile.Electronic Journal of Biotechnology 28 (2017) 20–26.
  11. Molina V, Hernández K, Dorador C, Eissler Y, Hengst M, Pérez V and Harrod C. Bacterial Active Community Cycling in Response to Solar Radiation and Their Influence on Nutrient Changes in a High-Altitude Wetland. (2016). Frontiers in Microbiology, Vol 7, 1:15.
  12. Torres P, Eissler Y, Tapia D, Espinoza JC & Juan Kuznar (2016). Genotipificación y relación hospedador-específica del virus de la necrosis pancreática infecciosa en Chile. Lat. Am. J. Aquat. Res., 44(4):860-868, 2016. DOI: 10.3856/vol44-issue4-fulltext-x
  13. Jorquera E; Morales P; Tapia D; Torres P; Eissler Y; Espinoza JC; Conejeros P; Kuznar J. (2016). Chilean IPNV isolates: robustness analysis of PCR detection. Electronic Journal of Biotechnology (29) 28-32.
  14. Tapia, D, Eissler, Y, P. Torres, E. Jorquera, J. C. Espinoza, J. Kuznar (2015) Detection and phylogenetic analysis of infectious pancreatic necrosis virus in Chile. Diseases of aquatic organisms. Vol. 116: 173–184, 2015. doi: 10.3354/dao02912
  15. Molina V, CE Morales, L Farías, M Cornejo, M Graco, Y Eissler & LA Cuevas (2012).Potential contribution of planktonic components to ammonium cycling in the coastal area off central-southern Chile during non-upwelling conditions. Progress in Oceanography Volumes 92-95, Special Issue: 43-49.
  16. Eissler Y, MS Pavlov, P Conejeros, JC Espinoza & J Kuznar (2011).Detection and quantification of Chilean strains of infectious pancreatic necrosis virus by real-time RT-PCR assays using segment B as a target. Latin American Journal of Aquatic Research 39(3): 544-552.
  17. Pavlov MS, Y Eissler, JC Espinoza, D Garland & J Kuznar (2011).Infectious pancreatic necrosis virus (IPNV) enumeration through epifluorescence microscopy: technical aspects. Electronic Journal of Biotechnology 14(1): 1-8.
  18. Eissler Y, J Letelier, LA Cuevas, CE Morales & R Escribano (2010).The microbial community in the coastal upwelling system off Concepción, Chile, 36°S, 2002-2003 period. Revista de Biología Marina y Oceanografía45(1): 1-18.
  19. Eissler Y, K Wang, F Chen, KE Wommack & DW Coats (2009).Ultrastructural characterization of the lytic cycle of an intranuclear virus infecting the diatom Chaetoceroscf.wighamii (Bacillariophyceae) from Chesapeake Bay, USA. Journal of Phycology 45(4): 787-797.
  20. Molina V, L Farías, Y Eissler, LA Cuevas, CE Morales & R Escribano (2005). Ammonium cycling under a strong oxygen gradient associated with the Oxygen Minimum Zone off northern Chile (~23°S). Marine Ecology Progress Series 288: 35-43.
  21. Eissler Y, E Sahlsten & R A Quiñones (2003).Effects of virus infection on respiration rates of marine phytoplankton and microplankton communities. MarineEcology Progress Series 262: 71-80.
  22. Eissler Y & RA Quiñones (2003). The effect of viral concentrate addition on the respiration rate of Chaetocerosgracilis cultures and microplankton from a shallow bay (Coliumo, Chile). Journal of Plankton Research25(8):927-938.
  23. Eissler Y & RA Quiñones (1999). Microplanktonic respiration off northern Chile during El Niño 1997-1998. Journal of Plankton Research 21(12): 2263-2283.