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Gilles, Allan Jr. S.

Gilles, Allan Jr. S.

Dr. Allan S. Gilles Jr. is a Filipino freshwater ecologist and academic with a PhD in Biology (cum laude) from the University of Santo Tomas. His research expertise centers on freshwater fish ecology, invasive species risk assessment, and biodiversity conservation in aquatic systems. He has authored multiple international, peer-reviewed publications and has served as a consultant and speaker in both national and international forums. Dr. Gilles is also actively involved in science policy translation, particularly around aquatic biosecurity and sustainability.

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Inst. Allan S. Gilles, Jr., PhD

College of Science | Department of Biological Sciences

asgilles@ust.edu.ph

Academic Qualifications

Research Highlights

Research Interests

Academic Qualifications

Degrees

  • Doctor of Biology (Cum-Laude), University of Santo Tomas – Manila, Philippines, 2019-2024
  • Master of Science in Biology –  University of Santo Tomas – Manila, Philippines, 2016-2019
  • Bachelor of Science in Biology, Laguna State Polytechnic University, San Pablo City, Philippines, 2010-2014

Eligibility

  •  

Research Highlights

  • Developed and applied aquatic invasiveness screening tools (AS-ISK) for non-native species in key freshwater bodies in the Philippines.
  • Quantified the invasion risk of non-native freshwater fish species under current and future climate scenarios in Ramsar-listed Lake Naujan and Lake Taal.
  • Co-authored high-impact, Scopus/Clarivate-indexed papers on global and regional invasive species risk assessment methodologies.
  • Actively involved in multi-country projects to improve biosecurity tools for freshwater and terrestrial ecosystems.

Research Interests

  • Freshwater Fish Ecology
  • Invasion Biology
  • Conservation Biology

Courses Handled

Major Recognitions

Professional Activities

Courses Handled

  • General Ecology
  • Freshwater Biology
  • Marine Biology
  • Advanced Ecological Techniques
  • Developmental Biology
  • Genetics
  • Science Technology and Society
  • Environmental Science

Major Recognitions

  • Cum Laude, University of Santo Tomas, 2024
  • Best Oral Presentation, 6th ASH Conference, Korea University, 2024
  • St. Albertus Magnus Student Award (University of Santo Tomas), 2022–2024
  • Notable Alumni Award, Laguna State Polytechnic University, 2021

Professional Activities

  • Academic Researcher – Aquatic Invasion and Marine Science, Research Center for the Natural and Applied Sciences, University of Santo Tomas.
  • Technical Consultant – DA-BFAR’s Technical Working Group (TWG) on the modification and improvement of the Existing Risk Assessment for Fish Species Introduced in Inland Waters in the Philippines.
  • Registered Environmental Impact Assessment Reviewer (EIA) Department of Environment and Natural Resources (DENR).
  • Regular Member, National Research Council of the Philippines (NRCP)
  • Member, Asian Society for Hydrobiology (ASH), 2024 – present
  • Member, Philippine Society for Freshwater Sciences (PSFS), 2022 – present
  • Member, Federation of Institution or Marine and Freshwater Sciences Philippines (FIFMS), 2019 – present
  • Philippine Delegate – Global Young Scientist Summit 2025 National University of Singapore, Singapore.
  • Plenary Speaker – 2024 JOINT UST – NDHU International Symposium on “The Environment and Sustainability.” University of Santo Tomas, Manila.
  • Resource Person – 3-Day Training on AS-ISK and MedCalc Analysis. National Fisheries Research and Development Institute (NFRDI) – Freshwater Fisheries Research and Development Center (FFRDC).
  • Resource Person – National Training Workshop on Inland Resource Management and Conduct of Planning/Review of BASIL Management Area. Department of Agriculture, Bureau of Fisheries and Aquatic Resources Central Office.
  • Resource Person – Aquatic Species Invasiveness Screening Kit (AS-ISK) orientation to selected BFAR Technical/ Regulation Divisions. Department of Agriculture, Bureau of Fisheries and Aquatic Resources Central Office.
  • Resource Person in the Conduct of Virtual Orientation on the Use of Aquatic Species Invasiveness Screening Kit (AS-ISK) in View of FOO No. 043, Series of 2021. Department of Agriculture, Bureau of Fisheries and Aquatic Resources. National
    Inland Fisheries Technology Center.
  • External Evaluator – LSPU-CAS Student Research Congress. College of Science Laguna State Polytechnic University-San Pablo City Campus.
  • Guest Speakers – Biology Program Orientation with a theme: “A Journey to the Microcosmos.” Department of Biology College of Arts and Sciences & Education. Trinity University of Asia, Quezon City, Philippines.

Selected Publications

Selected Publications

Vilizzi, L., Piria, M., Herczeg, G., Almeida, D., Gilles Jr., AS., Al-Wazzan, Z., Bakiu, R., … & Pietraszewski, D. (2025). Questionnaire improvements in second-generation, multilingual decision support tools for invasion risk screening of nonnative taxa. Management of Biological Invasions, 16(1), 33-44. Management of Biological Invasion. https://doi.org/10.3391/mbi.2025.16.1.03. Scopus/ Clarivate Analytics Indexed.

Gilles Jr., AS., ., Bate, J.M.B., Peralta, E.M., Pavia Jr, R.T., Vilizzi, L (2025). Quantifying the current and future risk of invasiveness of the non-native fishes in Ramsar-listed Lake Naujan (Philippines). Management of Biological Invasion. https://doi.org/10.31398/tpjf Scopus/ Clarivate Analytics Indexed. 

Gilles Jr, A. S., Bate, J. M. B., Peralta, E. M., Pavia Jr, R. T. B., & Vilizzi, L. (2025). Current and future risk of invasion by non-native freshwater fishes in a mega-biodiversity country: the Philippines. Management of Biological Invasions, 16(1). Scopus/ Clarivate Analytics Indexed. https://doi.org/10.3391/mbi.2025.16.1.05 

Vilizzi, L., Piria, M., Pietraszewski, D., Kopecký, O., Špelić, I., Gilles Jr, A.S,.. 2024 Questionnaire improvements in second-generation, multilingual decision support tools for invasion risk screening of non-native taxa. Science of the Total Environment 917 (2024) 1704475. https://doi.org/10.1016/j.scitotenv.2024.170475 Scopus/ Clarivate Analytics Indexed.

Vilizzi, L., Piria, M., Pietraszewski, D., Giannetto, D., Flory, S. L., Herczeg, G., Gilles Jr, AS, … & Yazlık, A. (2024). Development and application of a second-generation multilingual tool for invasion risk screening of non-native terrestrial plants. Science of the Total Environment, 917, 170475.https://doi.org/10.1016/j.scitotenv.2024.170475 Scopus/ Clarivate Analytics Indexed.

Gilles Jr., A.S. To, D.A.L., Pavia Jr, R.T.B., Vilizzi, L., Copp, G.H. Risk of invasiveness of non-native fishes can dramatically increase in a changing climate: the case of a tropical caldera lake of conservation value (Lake Taal, Philippines). Journal of Vertebrate Biology 73 (23032), 23032.1-15. https://doi.org/10.25225/jvb.23032 Scopus/ Clarivate Analytics Indexed.

Vilizzi, L., Piria, M., Pietraszewski, D., Kopecký, O., Špelić, I., Radočaj, T., Šprem, N., Ta, K.A.T., Tarkan, A.S., Weiperth, A. and Yoğurtçuoğlu, B., Gilles Jr, A.S. 2022. Development and application of a multilingual electronic decision-support tool for risk screening non-native terrestrial animals under current and future climate conditions. Recent advancements in the risk screening of freshwater and terrestrial non-native species. NeoBiota, pp.211-236. 10.3897/neobiota.76.84268 Scopus/ Clarivate Analytics Indexed.

To, D.A.L., Gomez, G.M.L., Ramos, D.R.Y., Palillo, C.D.V., Go, N.K.C., Gilles Jr, A.S., Briones, J.C.A. and Pavia Jr, R.T.B., 2022. Invasiveness Risk Assessment of Non-native Freshwater Fish Species (Order: Siluriformes) for Lake Taal, Philippines. Philippine Journal of Science, 151(3), pp.833-841. Scopus/ Clarivate Analytics Indexed.

 

Vilizzi, L., Copp, G. H., Hill, J. E., Adamovich, B., Aislabie, L., Akin, D., Gilles Jr, A.S., … & Semenchenko, V. (2021). A global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions. Science of the Total Environment, 788, 147868. https://doi.org/10.1016/j.scitotenv.2021.147868 Scopus/ Clarivate Analytics Indexed.

Copp, G. H., Vilizzi, L., Wei, H., Li, S., Piria, M., Al-Faisal, A. J., Almeida, D., Atique, U., Al-Wazzan, Z., Bakiu, R., Bašić, T., Bui, T. D., Canning -Clode, J., Castro, N., Chaichana, R., Coker, T., Dashinov, D., GülerEkmekçi, F., Erős, T., Ferincz, Á., Ferreira, T., Giannetto, D., Gilles Jr, A.S., Głowacki, Ł., Goulletquer, P., Interesova, E., Iqbal, S., et al.  (2021). Speaking their language–Development of a multilingual decision-support tool for communicating invasive species risks to decision makers and stakeholders. Environmental Modelling & Software, 135, 1 -11. https://doi.org/10.1016/j.envsoft.2020.104900  Scopus/ Clarivate Analytics Indexed.

Chan, F.T., Beatty, S.J., Gilles Jr, A.S., Hill, J.E.,Kozic, S., Luo, D., Morgan, D.L.,Pavia Jr, R.T., Therriault, T.W., Verreycken, H., Vilizzi, L., Wei, H., Yeo, D. C. J., Zeng, Y., Zięba, G., & Copp, G.H. (2019). Leaving the fishbowl: the ornamental trade as a global vector for freshwater fish invasions. Aquatic Ecosystem Health & Management, 22(4), 417 – 439. https://doi.org/10.1080/14634988.2019.1685849 Scopus/ Clarivate Analytics Indexed

   

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