Within Taal Lake is the much-loved yet endangered Sardinella tawilis. The much-loved fish delicacy is a staple of Luzon, yet has been marked Endangered in recent years. The recent eruptions of Taal Volcano have posed further threats to the species, and a new study uncovers its updated feeding ecology, which may help creating an ecosystem-based conservation and management strategy so that the species can survive.
The paper “Shifts in the feeding ecology of the endemic and Endangered Sardinella tawilis in Lake Taal, Philippines” showed that the tawilis, which have been found to feed on zooplanktons,preferred “cyclopoid copepods and [showed a] noticeable increased preference for Moina micrura, Ceriodaphnia cornuta, and Bosmina fatalis.” This showed a shift from its earlier preference for calanoids. The findings were elicited from an application of stable isotope analysis and gut content analysis.
The new study was published on June 5, 2025 in Endangered Species Research, Volume 57, and was authored by a team of scientists from UST, De La Salle University, University of Rizal System, and the Department of Science and Technology. The authors are: Dale Anthony L. To (UST, DLSU), Asst. Prof. Elfritzson M. Peralta, MSc (UST), Justine R. De Leon (UST), Alexis E. Belen (UST), Lloyd Matthew L. Pineda (UST), Inst. Walled T. Ali (UST), Miguel Angelo F. Dollete (UST), Inst. Ray Allan N. Zafra (UST), Norman Mendoza (DOST), Prof. Richard Thomas B. Pavia, PhD (UST), Assoc. Prof. Dino T. Tordesillas, PhD (UST), Jonathan Carlo A. Briones (UST, URS), and College of Science Dean Rey Donne S. Papa, PhD.
