National Committee on Marine Sciences (NCMS)
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- Insights into the environmental conditions contributing to variability in the larval recruitment of the tropical sardine Sardinella lemuruPata, Patrick R.; Yñiguez, Aletta T.; Deauna, Josephine Dianne L.; De Guzman, Asuncion B.; Jimenez, Cesaria R.; Rosario, Roselle T. Borja-Del; Villanoy, Cesar L. (Elsevier, 2021-07)The small pelagic fishery in the southern Philippines is one of the largest contributors to fisheries production in the country, and is dominated by the Bali sardine Sardinella lemuru. This species is a year-round spawner that has its peak spawning period during the northeast monsoon (NEM) months of November to February. However, there is still limited information on the conditions that affect this species’ survival during its early life history stages. Here, we attempt to discern the importance of temperature, prey density and advection on sardine larvae. The larvae were represented as passive particles that were released in known spawning grounds to simulate dispersal. The conditions the larvae experienced, namely, temperature and estimated prey density based on satellite chlorophyll-a values were recorded at each time step until the estimated recruitment age of 60 days. The temporal and spatial averaged conditions of recruited sardines showed that sardines spawned during the NEM months experienced higher chlorophyll-a, lower (more optimal) sea surface temperature, albeit higher advective loss, than sardines spawned during other months. Comparisons between years showed that during higher reported catch years, sardine larvae experienced lower temperatures and higher retention nearshore. Our results emphasize that sardine stock management efforts need to recognize the contribution of the temporally variable sardine environment to patterns in sardine recruitment and consequently in catches.The authors would like to thank Dr. Wilfredo Campos, Luke Felix, Dr. Rio Naguit, Denmark Recamara, and the Research for Sardines Volunteer Program (RSVP) volunteers for sharing sardine fisheries data; Arjay Cayetano for helping start the model used; and Iris Salud Bollozos for useful insights on larval ecology. This study was fully funded by the Department of Science and Technology–Philippine Council for Agriculture, Aquatic and Natural Resources Research and Development (DOSTPCAARRD) under the program, “Development of robust tools for managing sardine fisheries in the Philippines: Zamboanga Upwelling Bohol Sea System Program.” The authors declare no conflict of interest.
- Restriction site-associated DNA sequencing reveals local adaptation despite high levels of gene flow in Sardinella lemuru (Bleeker, 1853) along the northern coast of Mindanao, PhilippinesLabrador, Kevin; Palermo, Joseph Dominic; Agmata, Altair; Ravago-Gotanco, Rachel; Pante, Ma. Josefa (Frontiers Media SA, 2022-02-24)Stock identification and delineation are important in the management and conservation of marine resources. These were highlighted as priority research areas for Bali sardinella (Sardinella lemuru) which is among the most commercially important fishery resources in the Philippines. Previous studies have already assessed the stocks of S. lemuru between Northern Mindanao Region (NMR) and Northern Zamboanga Peninsula (NZP), yielding conflicting results. Phenotypic variation suggests distinct stocks between the two regions, while mitochondrial DNA did not detect evidence of genetic differentiation for this high gene flow species. This paper tested the hypothesis of regional structuring using genome-wide single nucleotide polymorphisms (SNPs) acquired through restriction site-associated DNA sequencing (RADseq). We examined patterns of population genomic structure using a full panel of 3,573 loci, which was then partitioned into a neutral panel of 3,348 loci and an outlier panel of 31 loci. Similar inferences were obtained from the full and neutral panels, which were contrary to the inferences from the outlier panel. While the full and neutral panels suggested a panmictic population (global FST ∼ 0, p > 0.05), the outlier panel revealed genetic differentiation between the two regions (global FST = 0.161, p = 0.001; FCT = 0.263, p < 0.05). This indicated that while gene flow is apparent, selective forces due to environmental heterogeneity between the two regions play a role in maintaining adaptive variation. Annotation of the outlier loci returned five genes that were mostly involved in organismal development. Meanwhile, three unannotated loci had allele frequencies that correlated with sea surface temperature. Overall, our results provided support for local adaptation despite high levels of gene flow in S. lemuru. Management therefore should not only focus on demographic parameters (e.g., stock size and catch volume), but also consider the preservation of adaptive variation.We would like to acknowledge the assistance provided by Ma. Rio Naguit, Asuncion De Guzman, Jerry Garcia, Jhunrey Follante, Joshep Mercene, and John Christopher Azcarraga in sample collection and initial processing. We also acknowledge the research staff of the Marine Molecular Ecology and Evolution Laboratory (MMEEL), as well as the Marine Genomics and Molecular Genetics Laboratory (MGMGL) and its head, Arturo Lluisma, for providing valuable input in the conduct of the experiment and analysis of the data. Finally, we extend our gratitude to Demian Willette, Laura David, and Jonas Quilang for their valuable feedback on the manuscript.
- Closed fishing season for sardines, mackerel, herring begins Nov. 15Cotejo, Honey (Sun • Star Publishing, 2022-11-16)The Bureau of Fisheries and Aquatic Resources Central Visayas (BFAR-7) has banned fishing for sardines, herring, and mackerel within the Visayan Sea for three months starting November 15, 2022. Allan Poquita, BFAR 7 director, told SunStar Cebu Tuesday, November 15, 2022, that the temporary ban which has been practiced annually for several years already is meant to ensure the protection and conservation of the said species in the Visayan Sea. The closed fishing season affecting around 22 coastal areas along the Visayan Sea is based on Fisheries Administrative Order (FAO) 167-3 issued in 2013.
- BFAR: Recent beaching of 'tuloy' no threat to sardine run tourismFlores, Claudine (Sun • Star Publishing, 2024-11-08)There is no need to worry about the recent beaching of Indian oil sardines, locally known as “tuloy,” at Panagsama Beach in Barangay Basdiot, Moalboal, Cebu, as it poses no threat to the area’s popular “sardine run” tourism, an officer from the Bureau of Fisheries and Aquatic Resources in Central Visayas (BFAR 7) said. In an exclusive interview with SunStar Cebu, Johann Tejada, spokesperson for BFAR 7, assured on Tuesday, Nov. 5, 2024, that the sardine beaching event will not impact the region’s vibrant underwater sardine population or its standing as a top diving destination.
- NGO calls for post-harvest support in line with sardine management planHalili, Adrian (BusinessWorld Publishing Corporation, 2024-03-04)OCEANA Philippines called on the government to fully implement the National Sardines Management Plan with post-harvest facilities and support for fisherfolk. In a statement, the non-government organization (NGO) urged the Bureau of Fisheries and Aquatic Resources and local government units to build more such infrastructure and support fisherfolk in bringing their product to market. Oceana Vice-President Gloria Estenzo Ramos said that fisherfolk will benefit from keeping spoilage to a minimum and increasing incomes by adding value to the basic sardine product.
- Bulk-buying of sardines mulledRomero, Maria (Concept & Information Group, Inc., 2022-09-19)Cannery owners are mulling bulk-buying sardines from municipal fishers to sustain their livelihood and keep the cheap prices of the canned goods, a social product that has helped keep Filipino families afloat, especially during disasters and calamities. At a press conference on Monday, Francisco Buencamino, executive director of the Sardines Canners Association of the Philippines, said his group would need the support of the Bureau of Fisheries and Aquatic Resources to support the proposed initiative. “We want to discuss this matter with the BFAR but they are not responsive to our letters. I would love the privilege of having discussions with them. We need to directly agree to craft an agreement, which will also help us avert any crisis,” Buencamino told reporters.
- Sardines group urges govt to act on 'looming' shortageArcalas, Jasper Emmanuel (Philippine Business Daily Mirror Publishing, Inc., 2022-09-20)Sardines industry stakeholders have urged the government to initiate a tripartite meeting to prevent a “looming” shortage of the fish product amid concerns, such as bad weather, that are affecting the current catch of vessels. A group of sardine canners and representatives from municipal fishermen expressed openness toward brokering various measures and mechanisms that would ensure the sufficiency of the country’s sardine supply nationwide.
- Fisherfolk warn of fake sardine shortageMarcelo, Elizabeth; Rivera, Danessa; Talavera, Catherine (Philippine Star Printing Co., Inc., 2022-09-07)Fisherfolk group Pambansang Lakas ng Kilusang Mamamalakaya ng Pilipinas (Pamalakaya) has warned the government about a shortage of tamban or Indian sardines that is allegedly being “fabricated” by big fishing firms and canneries. In a press statement yesterday, Pamalakaya said the supposed low supply and output of tamban was just being made up by fishing firms and operators supposedly to increase the retail prices of canned sardines and to push for their vessels’ entry into municipal waters. “The BFAR (Bureau of Fisheries and Aquatic Resources) should remain vigilant against this fabricated tamban shortage that will only favor big fishing firms and operators over the interests of small fishers and consumers,” Pamalakaya national chairman Fernando Hicap said.