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Occurrence of Anguilla luzonensis in the Tributaries along the Lagonoy Gulf,Philippines

Journal of Fisheries Science 2021年第1期3卷 8-16页

作者： Katrina L.Canon Plutomeo M.Nieves antonino b.mendoza jr John Christopher C.Nolial Niño C.Celestial Ronie O.Mediario Raul G.bradecina Teresa N.Avila Satoshi Kubota Graduate School of Integrated Arts and Sciences Kochi UniversityKohasuOkoNankokuKochi 783-8505Japan bicol University Tabaco Campus Tabaco City 4511AlbayPhilippines Partido State University Goa 4422Camarines SurPhilippines

Anguillids areаvaluable fish commodity *** Anguilla luzonensis have been abundantly found in the northern Philippines and collected for trade,no available records show that it recruited in the mid-part where Lagonoy Gulf,bicol is *** this study,we investigated the occurrence of *** in the tributaries along the Lagonoy Gulf,Philippines using molecular *** eel specimens were collected in 2018-2019 from the Comun river,Albay;the Lagonoy river,Camarines Sur;and the bato river,*** luzonensis was first reported in Lagonoy Gulf using molecular *** was the second most abundant species in the Comun and Lagonoy rivers(9.5 and 22.4%,respectively).Anguilla luzonensis collected from the Comun and Lagonoy rivers did not show a significant difference(FST=0.00825,p>0.05).Anguilla marmorata was the most dominant species in all tributaries(71.1-98.0%).In the Comun and Lagonoy rivers,*** pacifica was the third most abundant species(7.7 and 6.5%,respectively).In addition,Anguilla celebesensis was only found rarely in the Comun river(0.9%).This study provides important information for sustainable resource management and effective utilization of the eel species in these regions.

关键词： Anguilla Glass eels Species composition PCR-RFLP DNA sequencing Diversity

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Suspended Microplastic in Sorsogon bay Attributing Perna viridis and Atrina pectinata Contamination

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Open Journal of Marine Science 2022年第2期12卷 27-43页

作者： Mark Ariel Diamsim Malto antonino baconawa mendoza jr. Magallanes Campus Sorsogon State University Magallanes Philippines Tabaco Campus Bicol University Tabaco City Philippines

Marine microplastic pollution is becoming more visible and pervasive in various aquatic environments and species, including those intended for human consumption. The present study evaluated the occurrence of suspended microplastics in surface waters, the water column, and bivalves, such as Perna viridis and Atrina pectinata in Sorsogon bay. Microplastics were detected in all sampling sites and bivalve tissue samples. Surface water (0 m) and water column (5 m) samples taken from six sampling stations representing spatial consideration of the bay showed an average of 5.55 ± 1.74 items/m3 (range: 2.27 - 1.66 items/m3) and 5.80 ± 1.94 items/m3 (range: 1.93 - 14.55 items/m3), respectively. The mean microplastic number in farmed mussels and wild pen shells collected around the bay varied from 0.31 - 2.50 items/individual for mussels and 0.93 - 4.27 items/individual for pen shells. FTIR spectroscopy revealed that microplastics made up 55% of the debris analyzed, with an additional 45% natural materials, including aluminum silicate, cellulose, and chitin. It is becoming increasingly evident that Sorsogon bay is not exempt from this paradigm. Hopefully, this will drive the community to support measures to address this issue, such as social perception and behavioral change.

关键词： Microplastic Seawater bivalve Tissues FTIR Philippines

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