Journal of Biodiversity, Climate Change and Sustainable Development

1. Article01

   Research Article

   Pages 1–10

   From ocean waste to poultry plate: Yellowfin tuna (Thunnus albacares) by-product meal as a sustainable protein feed supplement for broiler chickens

   Jan Bernard M. Victorio & Ruben P. Tablizo

   Fish processing generates large quantities of organic by-products that represent both an environmental management challenge and an underexploited protein-rich resource. This study evaluated four yellowfin tuna by-product meal inclusion levels in broiler diets over a 43-day experimental period. The 8% treatment achieved the highest final mean body weight, greatest total weight gain, and best feed conversion ratio, significantly outperforming the control. The findings support an 8% inclusion as a cost-effective, nutritionally appropriate, and environmentally sustainable partial protein supplement for broiler diets.

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2. Article02

   Research Article

   Pages 11–22

   Hydropriming with pili nut (Canarium ovatum Engl.) leaf extracts enhances germinability, seedling vigor, and stress tolerance of three indigenous rice cultivars (Oryza sativa L.) from Catanduanes, Philippines

   Maria Ayna Renze B. Silva, Estrella T. Tribiana & Ma. Luz A. Floralde

   Seed priming with plant-derived extracts is a cost-effective enhancement technology for smallholder rice farmers. This study evaluated three Catanduanes heritage rice landraces hydroprimed with four concentrations of aqueous pili nut leaf extract. A 5% concentration produced optimal enhancement across cultivars, while salt stress treatments completely suppressed germination. The study provides a germinability baseline for these Catanduanes landraces and an initial assessment of Canarium ovatum leaf extract as a phytochemical priming agent.

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3. Article03

   Research Article

   Pages 23–33

   Anti-angiogenic activity of Physalis minima (Solanaceae) methanol leaf extract on the chorioallantoic membrane of duck embryos: Evidence for tumor vasculature inhibition

   Gisselle F. Cabrera, Abelisa G. Evangelista & Jimmy T. Masagca

   Tumor-associated angiogenesis is a validated hallmark of cancer progression. This study investigated the anti-angiogenic activity of graded concentrations of Physalis minima methanol leaf extract using the chorioallantoic membrane assay on duck embryos. Results demonstrated a significant, concentration-dependent reduction in secondary branch-point formation. The findings support further pharmacological investigation of P. minima as a source of natural anti-angiogenic compounds.

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4. Article04

   Research Article

   Pages 34–47

   Science-based mangrove conservation and restoration in Catanduanes Island, Philippines: A SURMABIOCON framework for blue carbon, community engagement, and MANGROVIZATION

   Jimmy T. Masagca, Sonia R. Sapico, Estrella T. Tribiana & Jhomann U. Socito

   Catanduanes Island harbors approximately 1,600 hectares of mangrove ecosystems across ten biodiversity zones. This paper synthesizes the coastal conservation initiatives implemented through SURMABIOCON and the MANGROVIZATION framework. It documents mangrove floristic composition, a first blue-carbon baseline for Catanduanes, six community-engagement modalities, and rehabilitation protocols aligned with international blue-carbon standards. The resulting model offers a transferable, university-anchored framework for typhoon-prone island provinces.

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5. Article05

   Research Article

   Pages 48–63

   Sweet heritage, sustainable futures: Muscovado ('bukayo') agro-industry in Alinawan, Panganiban, Catanduanes, Philippines

   Jennifer A. Berces

   Traditional small-scale food production is an undervalued dimension of rural livelihoods in Philippine island provinces. This mixed-method value-chain assessment documents the traditional muscovado-bukayo process in Alinawan, household income contribution, production constraints, and consumer willingness to pay. The evidence supports premium positioning and recommends geographic-indication certification, improved processing infrastructure, and generational knowledge transfer.

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6. Article06

   Research Article

   Pages 64–73

   Aphrodisiac activity of makahiya (Mimosa pudica Linn.) root extract in male albino mice: A dose-response behavioral investigation

   Jackie-Lou Villarey, Jomary Mae O. Ladera & Jimmy T. Masagca

   This study investigated the aphrodisiac potential of ethanolic root extracts of Mimosa pudica in male Swiss albino mice. Three concentrations were evaluated against control and reference groups using seven standardized behavioral indicators. The 30 ml concentration produced the most pronounced and consistent activity. No signs of toxicity, stress, or behavioral abnormalities were observed during the seven-day period, supporting further study of this traditional ethnomedicinal use.

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7. Article07

   Research Article

   Pages 74–84

   Assessing anti-poverty programs in Catanduanes, Luzon, Philippines: Effectiveness, community participation, and pathways to sustainable development

   Aurora E. Araojo, Minerva I. Morales, Nena V. Santos, Juanita V. Cervantes & Jimmy T. Masagca

   This mixed-method study assesses major national and local anti-poverty programs operating in Catanduanes. Conditional cash transfers improved short-term food security and school attendance, but targeting accuracy, weak livelihood integration, climate disruptions, and limited community-governance participation constrained longer-term outcomes. Households enrolled in convergent programs showed stronger income adequacy and livelihood resilience. The study recommends program convergence, climate-smart livelihoods, adaptive social protection, and university-community monitoring.

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8. Article08

   Research Article

   Pages 85–97

   Indigenous trap designs for monitor and sailfin lizards in Catanduanes Island, Philippines: Conservation and coexistence implications

   Nediel Vaughn T. Masagca, Estrella T. Tribiana & Jimmy T. Masagca

   This study documents three indigenous lizard trap designs used by coastal communities in Bato, Catanduanes. Community-based interviews and trapping observations identified coconut-bark, bamboo-and-guava-slat, and dual-entrant bamboo designs. The study discusses their implications for population decline, introduces a Human–Halo Coexistence framework, and recommends community conservation education and university-led ecotourism as coexistence pathways.

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