Rhodora V. Azanza, Ph.D.
Professor Emeritus 
Academician of the National Academy of Science and Technology (NAST)

Ph.D. Botany
University of the Philippines, Quezon City, Philippines 

Research Interests: 
Algal Biology, Ecology and Culture; Harmful Algal Bloom Dynamics, Eucheuma/Kapapaphycus, Reproductive Biology, Culture and Farming Studies

Selected Publications:
  • Marquez, G. P. B., W. T. Reichardt, R. V. Azanza, D. F. L. Onda, A. O. Lluisma and M. N. E. Montano (2015). Dominance of Hydrogenotrophic Methanogens at the Peak of Bigas Production in Thalassic Digesters. Waste Biomass Valor DOI 10.1007/s 12649-014-9325-4.
  • Onda, D. F., Lluisma, A. O. and R.V. Azanza (2014). Development, morphological characteristics and viability of temporary cysts of Pyrodinium bahamense var. compressum (Dinophyceae) in vitro, European Journal of Phycology, 49:3, 265-275.
  • Reotita, J., Siringan, FP, Zhang J., R.V. Azanza. Paleoenvironment changes in Juag Lagoon, Philippines based on sedimentology, bulk geochemistry and stable isotopes and their implication to nitrification (2014). Quaternary International xxx (2014) 1-12.
  • Tatsuki Yoshinaga, Jun Aoyama, Akira Shinoda, Shun Watanabe, Rhodora V Azanza and Katsumi Tsukamoto (2014). Occurrence and biological characteristics of glass eels of the Japanese eel Anguilla japonica at the Cagayan River of Luzon Island, Philippines in 2009. Zoological Studies 2014, 53:13.
  • Azanza, R. V. and G. A. Benico. 2013. Toxic Alexandrium blooms in fish farming sites in Bolinao, Pangasinan. Journal of Environmental Science and Management (Special Issue) 1: 44-49.
  • Azanza RV, Vargas VM, Fukami K, Shashank K, Onda DF and MP Azanza. 2013. Culturable algalytic bacteria isolated from seaweeds in the Philippines and Japan. Journal of Environmental Science and Management (Special Issue) 1: 1-10.
  • Manset KJ, Azanza RV and DF Onda. 2013. Algicidal bacteria from fish culture areas in Bolinao, Pangasinan, Northern Philippines. Journal of Environmental Science and Management (Special Issue) 1: 11-20.
  • Orizar IS, Rivera PP, San Diego-McGlone ML and RV Azanza. 2013. Harmful algal bloom (HAB) mitigation using ball clay: Effect on non-target organisms. Journal of Environmental Science and Management (Special Issue) 1: 36-43.
  • Mendoza CO, Rabanes AC, Jimenez EC, Azanza RV, Cortez-Akhunzadah J and LJ Cruz. 2013. Detection of ciguatera fish poisoning in the Philippines. Journal of Environmental Science and Management (Special Issue) 1: 50-55.
  • Escobar MT, Sotto LP, Jacinto GS, Benico GA, San Diego-McGlone ML and RV Azanza. 2013. Eutrophic conditions during the 2010 fish kill in Bolinao and Anda, Pangasinan, Philippines. Journal of Environmental Science and Management (Special Issue) 1: 28-35.
  • Cayetano AC, Yñiguez AT, Villanoy CL, David LT, Deauna JD, Peñaflor EL, Palermo JD, Benico GA and RV Azanza. 2013. Improving the validity and robustness of a harmful algal bloom model through genetic algorithm-based optimization. Journal of Environmental Science and Management (Special Issue) 1: 21-28.
  • Marquez, GP, Reichardt, WT, Azanza, RV, Klocke M and MN Montaño. 2013. Thalassic biogas production from sea wrack biomass using different microbial seeds: cow manure, marine sediment and sea wrack-associated microflora. Bioresource Technology 133: 612-617.
  • Canini, ND, Metillo, E. and RV Azanza. 2013. Monsoon-influenced phytoplankton community structure in a Philippine mangrove estuary. Tropical Ecology 54(3): 329-341.
  • Watanabe, S., J. Aoyama, S. Hagihara, B., R. V. Azanza and K. Tsukamoto. 2013. Anguilla huangi Teng, Lin and Tzeng, 2009, is a junior synonym of Anguilla luzonensis Watanabe, Aoyama and Tsukamoto, 2009. Fish Sci. (2013) 79:375-383.
  • Furio, EF, Azanza, RV, Fukuyo, Y and K Matsuoka. 2012. Review of Geographical distribution of dinoflagellate cysts in Southeast Asian coasts. Coastal Marine Science 35(1): 20-33.
  • Santos, MAG and RV Azanza. 2012. Responses of Pyrodinium bahamense var. compressum and associated cultivable bacteria to antibiotic treatment. Journal of Applied Phycology 24 (4): 825-835.
  • Baula, IU, RV. Azanza, Y. Fukuyo and F.P. Siringan. 2011. Dinoflagellate cyst composition, abundance and horizontal distribution in Bolinao, Pangasinan, Northern Philippines. Harmful Algae 11: 33-44.
  • Azanza, R. V., L. J. Cruz, F. Cariňo, A. G. Blanco and V. M. Butardo, Jr. 2010. Paralytic shellfish toxin concentration and cell density changes in Pyrodinium bahamense -Noctiluca scintillans feeding experiments. Toxicon 55 (5): 1017-1023.
  • Padilla, L. V., M. L. S. Diego-McGlone and R. V. Azanza. 2010. Exploring the potential of clay in mitigating Pyrodinium bahamense var. compressum and other harmful algal species in the Philippines. Journal of Applied Phycology 22 (6): 761-768.
  • David C.P., Y.Y. Sta. Maria, F.P. Siringan, J.M. Reotita, P.B. Zamora, C.L. Villanoy, E.Z. Sombrito and R.V. Azanza. 2009. Coastal pollution due to increasing nutrient flux in aquaculture sites. Environmental Geology 58: 447-454.
  • San Diego-McGlone M.L., R.V. Azanza, C.L. Villanoy and G.S. Jacinto. 2008. Eutrophic waters, algal bloom and fish kill in fish farming areas in Bolinao, Pangasinan, Philippines. Marine Pollution Bulletin 57: 295–301.
  • Glibert P.M., R.V. Azanza, M. Burford, K. Furuya, E. Abal, A. Al-Azri, F. Al-Yamani, P. Andersen, D.M. Anderson, J. Beardall, G.M. Berg, L. Brand et al. 2008. Ocean urea fertilization for carbon credits poses high ecological risks. Marine Pollution Bulletin 56: 1049–1056.
  • Siringan, F.P., R.V. Azanza, N.J.H. Macalalad, P.B. Zamora and Y. Yacat. 2008. Temporal changes in the dinoflagellates cysts density in Manila Bay, Philippines. Harmful Algae 7(4): 523-531. 
  • Azanza, R.V., L.T. David, R.T. Borja, I.U. Baula and Y. Fukuyo. 2008. An extensive Cochlodinium bloom along the western coast of Palawan, Philippines. Harmful Algae 7(3): 324-330.
  • Wang, S., D. Tang, F.  He, Y. Fukuyo and R.V. Azanza. 2008. Occurrences of harmful algal blooms (HABs) associated with ocean environments in the South China Sea. Hydrobiologia 596(1): 79-93.
  • Cremen, M.C.M., M.R. Martinez-Goss, V.L. Corre Jr. and R.V.  Azanza. 2007. Phytoplankton bloom in commercial shrimp ponds using green water technology. Journal of Applied Phycology 19: 615–624.
  • Gedaria, A.I., B. Luckas, K. Reinhardt and R.V. Azanza. 2007. Growth response and toxin concentration of cultured Pyrodinium bahamense var. compressum to varying salinity and temperature conditions.  Toxicon 50: 518–529


MS Students

Beringuela, Romella

Cabacaba, Sheen Rose

Dungca, Jenelle Clarisse

Paris, Ma. Eliza


Graduated Advisees (past 10 years):

Ph.D. Students

Mary Ann Santos

Dissertation Topic: Effect of Heterotrophic Bacteria on the Growth and Cellular Toxin Levels of Pyrodinium bahamense var. compressum, 2012

Lemmuel Tayo

Dissertation Topic: Proteomic Analysis of Conus textile Venom, 2009


Susan Rabanal

Dissertation Topic: 

MS Students

Aime Lampad

Thesis: Spatial variability of phytoplankton assemblages during the intermonsoon in Baler Bay and inner Casiguran sound, Aurora, Northeastern Philippines, 2014


 Gary Benico

 Thesis: Taxonomy and Toxicity of Alexandrium spp. Halim (Dinophyceae) from  Northwestern and Western Philippines, 2014


  Vanessa Mercee Vargas

  Thesis: Isolation and characterization of algicidal bacteria against Pyrodinium               bahamense var compressum from the Philippines, 2009


  Iris Baula

   Thesis: Dinoflagellate cyst composition, abundance and horizontal distribution in        Bolinao, Pangasinan, 2008


  Peter Paolo Rivera

  Thesis: Removal of harmful algal bloom (HAB) forming organisms using ball clay:         factors and effects of clay addition, 2014

  Nero Austero

  Thesis: Potentially Harmful Algal Bloom (HAB) causing algae in selected ports in           the Philippines and ballast water from international vessels, 2016

   Marilou Sison

   Thesis: The effects of zooxanthellae clades A and C on giant clam host, in particular        to its early growth, survival, recruitment and response to thermal stress

   Aileen de Leon

   Thesis: Development and evaluation of iodine-labeled analogs of u-conotoxin GIIIA        for receptor binding assay of paralytic shellfish poisons, 2009

    Jayvee Saco

    Thesis: Photosynthetic responses of macroalgae from Bolinao, Pangasinan,                      Philippines in relation to thallus morphology and diel periodicity, 2013


    Iris Orizar

    Thesis: Toxin production of Pyrodinium bahamense var. compressum (Bohm)                     Steidinger, Tester & Taylor exposed to other dinofphyceae and toxin removal using           ball clay powder, 2014

    Aldwin Almo

    Thesis: Geospatial techniques for harmful algal bloom detection in Philippine waters       using moderate resolution imaging spectroradiometer (MODIS), 2016

    Gian Powell Marquez

    Thesis: Methane Production from Anaerobic Degradation of Sea Wrack, 2011


    Araniza Manulon

    Thesis: Photosynthetic responses of farmed carrageenophytes to long-term                        laboratory culture conditions, 2016

     Makoto Barrow

     Thesis: Photosynthetic and nutrient uptake physiology of padina plants in waters        with high and low nutrient loads in Bolinao, Pangasinan, Philippines, 2013