Research interest — Linea de Investigación

My scientific research focusses on the study of larval ecology, evolution of parental care and life history of marine invertebrates. I have used spionid polychaetes that have more than one type of development (i.e. poecilogony) as a study systems. In addition, I have used an array of research methods (behavioral, ecological, computational modeling and phylogeography) to answer questions in relation to the ecology and evolution of parental care, intrafamilial conflict over the distribution of resources and phenotypic plasticity.

Mi investigación científica se centra en el estudio de la ecología larval, evolución de cuidado parental e historia de vida de invertebrados marinos. He usado poliquetos espiónidos que poseen más de un modo de desarrollo (poecilogonia) como modelos de estudio, además de un abanico de aproximaciones (conductuales, ecológicas, modelamiento computacional y filogeografía) para contestar preguntas sobre la ecología y evolución del cuidado parental, conflicto intrafamiliar sobre distribución de recursos y plasticidad fenotípica.

Tesis y Publicaciones Científicas (ISI)

  • Latorre-Padilla N, A Meynard, FX Oyarzún, L Contreras-Porcia (2021). Ingestion of contaminated kelps by the herbivore Tetrapygus niger: Negative effects on food intake, growth, fertility, and early development. Marine Pollution Bulletin. Volume 167.
  • Moreano-Arrobo L, OD Pérez , FD Brown, FX Oyarzún and CB Canales-Aguirre (2021). Mexican dancer in Ecuador: molecular confirmation, embryology and evidence of planktotrophy in the sea slug Elysia diomedea. International Journal of Developmental Biology.
  • Doherty-Weason D, FX Oyarzun, L Vera, M Bascur, F Guzmán, F Silva, A Urzúa and A Brante (2020). Bioenergetics of parental investment in two polychaete species with contrasting reproductive strategies: The planktotrophic Boccardia chilensis and the poecilogonic Boccardia wellingtonensis (Spionidae). Marine Ecology. (link).
  • Figueroa A, A Brante, L Cardenas, M Caicedo, FX Oyarzun, D Doherty-Weason (2019). Characterization of the expression of microRNAs in the poecilogonous polychaete Boccardia wellingtonensis. Marine Genomics. (link).
  • Strathmann RR, A Brante & FX Oyarzun (2019). Contrasting metatrochal behavior of mollusk and annelid larvae and the regulation of feeding while swimming. Biological Bulletin. 236: 130-143.
  • Doherty-Weason D, FX Oyarzun, L Vera, M Bascur, F Guzmán, F Silva, A Urrutia, A Brante (2019). Larval Feeding morphology and digestive enzyme activity of the polychaete Boccardia wellingtonensis: determining factors of marine larval development modes. Peer J. (link)
  • Canales-Aguirre C, S Ferrada-Fuentes, R Galleguillos, FX Oyarzun and CE Hernández (2018). Population genetic structure of Patagonian toothfish (Dissostichus eleginoides) in the Southeast Pacific and Southwest Atlantic Ocean. Peer J. DOI 10.7717/peerj.4173
  • Canales-Aguirre C, S Ferrada-Fuentes, R Galleguillos, FX Oyarzun, C Buratti & CE Hernández (2018). High genetic diversity and low-population differentiation in the Patagonian sprat (Sprattus fuegensis) based on mitochondrial DNA. Peer J. Pages 1-8 | Received 05 Jun 2017, Accepted 03 Jan 2018, Published online: 15 Jan 2018. (link)
  • Vargas HA, FX Oyarzun and LE Parra (2017) Egg and first instar of the Neotropical geometrid moth Pero obtusaria Prout (Geometridae: Ennominae: Azelinini). Journal of the Lepidopterists’s Society. 71(1): 50—56.
  • Oyarzun FX and Brante A (2015). A new case of poecilogony from South America and the implications of nurse eggs, capsule structure and maternal brooding behavior on the development of different larval types. Biological Bulletin. 228: 85-97 (pdf)
  • Oyarzun FX and Brante A (2014). The effects of nurse eggs and sibling interactions on the larval development of the poecilogonous annelid Boccardia proboscidea (Spionidae). Invertebrate Biology. 133 (4): 340-353 (pdf)
  • Oyarzun FX, Swalla BJ, Mahon AR and Halanych KM (2011). Phylogeography and maternal effects of the poecilogonous polychaete Boccardia proboscidea (Annelida: Spionidae) along the West Coast of North America. Evolution & Development. 13 (6): 489-503 (pdf)
  • Oyarzun FX and Strathmann RR (2011). Plasticity of hatching and the duration of planktonic development in marine invertebrates. Integrative Comparative Biology. 51 (1): 81-90 (pdf)
  • Oyarzun FX (2010). Brooding mothers, sibling rivals, and population structure in Boccardia proboscidea, a polychaete with alternative reproductive modes. PhD thesis, UW, Washington. Pp 141 (pdf)
  • Kamel K, Oyarzun FX and Grosberg R  (2010). Reproductive Biology, Family Conflict, and Size of Offspring in Marine invertebrates. Integrative and Comparative Biology. 50(4): 619-629 (pdf)
  • Simon C, Thornhill DJ, Oyarzun FX and Halanych KM (2009). Genetic Similarity between Boccardia proboscidea from Western North America and cultured abalone, Haliotis midae, in South Africa. Aquaculture: 18-24 (pdf)
  • Oyarzun, F (2006). Crepidula fornicata and Hydrilla verticillata. En: Invasive Species in the Pacific Northwest. Eds: P. D. Boersma, S. H. Reichard, and A. N. Van Buren. UW Press. 276 pp. (link to book)
  • Griffiths, J, Dethier M, Newsome A, Byers JE, Meyer JJ, Oyarzun F and Leninhan H (2006). Invertebrate community responses to clam digging. Marine Biology 149, 1489-1497 (pdf)

Grants, Scholarships & Awards

  • Postdoctoral FONDECYT # 3120202 “Brooding behavior, hatching plasticity and intrafamilial conflict in the poecilogonous polychaete Boccardia wellingtonensis“. 2011-2013. Principal Investigator/Investigadora principal.
  • Excellence in Teaching Award, University of Washington. 2008.
  • Project for Interdisciplinary Pedagogy, PIP, University of Washington, Bothell, USA. 2008-2009.
  • National Science Foundation grant OCE # 0623102 “Predator-Induced Defenses of Marine Planktonic Animals”. 2007-2010. Research Assistant.
  • STRI fellowship, Smithsonian Institute, Panama. 2006.
  • Sargent Award, Department of Biology, University of Washington. 2006
  • Distinguish Teaching Award Ingrith Deyrup-Olsen Award, Department of Biology, University of Washington 2006.
  • National Science Foundation grant OCE #0217304 “Swimming and Vulnerability in Pelagic Development” 2002-2007. Research Assistant.
  • Fulbright Professional Enhancement Grant. 2003.
  • Fulbright Scholarship. 2002
  • Lerner-Gray Fund for Marine Research of the American Museum of Natural History, NY (EEUU).“Source versus Sink conditions in a marine protected area in central Chile”. 2000.

Affiliation/ Afiliación

Research Associate/Investigadora Asociada. Universidad Católica de la Santísima Concepcion

Link to Research Gate