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Collection of the clam Anodontia edentula in mangrove habitats in Panay and Guimaras, central Philippines

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วันที่
2002
ผู้เขียน
Primavera, Jurgenne
Lebata, M. J. H. L.
Gustilo, Lillian F.
Altamirano, Jon ORCID
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96
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นามธรรม
The mangrove clam Anodontia edentula is highly prized in the Philippines for its flavor and large size. Because this infaunal species is found down to one meter deep in mangrove areas, harvesting the clam reportedly damages mangrove stands. To evaluate such reports, a survey of collection methods was undertaken in Panay and Guimaras, central Philippines in August 1997-December 1999. Host to chemosynthetic bacterial symbionts that utilize sulfide as energy source, A. edentula are strategically situated in sulfide-rich anoxic substrates but also gain access to oxygenated seawater through a ventilation burrow or tube. By locating the opening of this burrow, collectors can detect the presence of a buried clam and harvest it nondestructively with a blade or bare hands. In contrast, the indiscriminate tilling of wide mangrove areas can damage mangrove plants. Most collectors were 40-45 years old with 22-30 years collection experience, married with 5-7 children, and had low educational attainment. They sold clams directly in the local markets or through middlemen (to restaurants and beach resorts); sales provided from 10% to 100% of daily family income. Collectors complained of decreasing clam sizes and numbers and the physically strenuous work of collecting.
Keywords
Bacterial symbionts Food security Gleaning Lucinid bivalve Mangrove clam
URI
http://hdl.handle.net/10862/1854
การอ้างอิง
Primavera, J., Lebata, M. J. H. L., Gustilo, L. F., & Altamirano, J. (2002). Collection of the clam Anodontia edentula in mangrove habitats in Panay and Guimaras, central Philippines. Wetlands Ecology and Management, 10(5), 363-370.
DOI
10.1023/A:1020983218203
เรื่อง
burrowing organisms ASFA; chemosynthesis; clam fisheries ASFA; ecosystem disturbance ASFA; symbionts ASFA; environmental management ASFA; environmental impact ASFA; harvesting ASFA; mangrove swamps ASFA; plant population ASFA; shellfish ASFA; sulphides ASFA; Bacteria ASFA; food security ASFA; Anodontia edentula AGROVOC; gleaning AGROVOC; Panay TGN; Guimaras TGN
Taxonomic term
Anodontia edentula GBIF
คอลเลกชัน
  • AQD Journal Articles [1175]

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    Imbao, the mangrove clam 

    Adan, R. I. Y. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2000)
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    Oxygen, sulphide and nutrient uptake of the mangrove mud clam Anodontia edentula (Family: Lucinidae) 

    Lebata, Ma. Junemie Hazel L. (Elsevier, 2001)
    Oxygen, sulphide and nutrient (ammonia, nitrite and phosphate) uptake of Anodontia edentula was measured. Oxygen and sulphide were measured from sealed containers provided with 1 l fresh mangrove mud (sulphide source) and ...
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    Gill structure, anatomy and habitat of Anodontia edentula: Evidence of endosymbiosis 

    Lebata, Ma. Junemie Hazel L.; Primavera, Jurgenne (National Shellfisheries Association, 2001)
    Surveys and interviews were conducted to determine sources and habitat of Anodontia edentula. Results showed that they inhabit muddy substrate of mangrove areas or the adjacent mudflats, burying at 20-60 cm deep in the ...

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