Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions
The filtration and respiration rates of various size classes (35-39.99, 40-44.99,45-49.99, 50-54.99 and 55-59.99 mm) of the short-necked clam Paphia undulata were measured in the laboratory. The effects of three light regimes (0 lux, 172.22 lux and 645.83 lux), three microalgal species (Isochrysis g...
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| Format: | Article |
| Language: | English |
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University of the Philippines
2010-12-01
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| Series: | Science Diliman |
| Subjects: | |
| Online Access: | http://journals.upd.edu.ph/index.php/sciencediliman/article/view/2082 |
| _version_ | 1828291006336860160 |
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| author | Laureen Morillo Manalo Annabelle del Norte Campos |
| author_facet | Laureen Morillo Manalo Annabelle del Norte Campos |
| author_sort | Laureen Morillo Manalo |
| collection | DOAJ |
| description | The filtration and respiration rates of various size classes (35-39.99, 40-44.99,45-49.99, 50-54.99 and 55-59.99 mm) of the short-necked clam Paphia undulata were measured in the laboratory. The effects of three light regimes (0 lux, 172.22 lux and 645.83 lux), three microalgal species (Isochrysis galbana, Tetraselmis tetrahele and Chaetoceros calcitrans) and four microalgal concentrations (10, 25, 50 and 100 x 104 cells ml-1) on filtration rates were investigated. Mean filtration rate was highest (0.57 ± 0.04 Lh-1ind.-1) under total darkness. This can be attributed to the natural environment of this species which is characterized by silty substrate and low visibility. Filtration was also highest in the microalga Isochrysis galbana (0.67 ± 0.05). Rates initially increased from low to moderate microalgal concentrations (25 x 104 cells ml-1) and decreased at higher concentrations. Filtration generally decreased with increase in clam size. Light intensity, microalgal species and microalgal concentration showed significant effects on filtration. Respiration of fed clams was higher (0.138 ± 0.026 ml O2h-1ind.-1) than unfed clams (0.053± 0.025 ml O2h-1 nd.-1) and increased with clam size. |
| first_indexed | 2024-04-13T10:45:14Z |
| format | Article |
| id | doaj.art-dbd24a5b90894e5cad3a1b902c2d01b4 |
| institution | Directory Open Access Journal |
| issn | 0115-7809 2012-0818 |
| language | English |
| last_indexed | 2024-04-13T10:45:14Z |
| publishDate | 2010-12-01 |
| publisher | University of the Philippines |
| record_format | Article |
| series | Science Diliman |
| spelling | doaj.art-dbd24a5b90894e5cad3a1b902c2d01b42022-12-22T02:49:49ZengUniversity of the PhilippinesScience Diliman0115-78092012-08182010-12-012222129Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditionsLaureen Morillo ManaloAnnabelle del Norte CamposThe filtration and respiration rates of various size classes (35-39.99, 40-44.99,45-49.99, 50-54.99 and 55-59.99 mm) of the short-necked clam Paphia undulata were measured in the laboratory. The effects of three light regimes (0 lux, 172.22 lux and 645.83 lux), three microalgal species (Isochrysis galbana, Tetraselmis tetrahele and Chaetoceros calcitrans) and four microalgal concentrations (10, 25, 50 and 100 x 104 cells ml-1) on filtration rates were investigated. Mean filtration rate was highest (0.57 ± 0.04 Lh-1ind.-1) under total darkness. This can be attributed to the natural environment of this species which is characterized by silty substrate and low visibility. Filtration was also highest in the microalga Isochrysis galbana (0.67 ± 0.05). Rates initially increased from low to moderate microalgal concentrations (25 x 104 cells ml-1) and decreased at higher concentrations. Filtration generally decreased with increase in clam size. Light intensity, microalgal species and microalgal concentration showed significant effects on filtration. Respiration of fed clams was higher (0.138 ± 0.026 ml O2h-1ind.-1) than unfed clams (0.053± 0.025 ml O2h-1 nd.-1) and increased with clam size.http://journals.upd.edu.ph/index.php/sciencediliman/article/view/2082Paphia undulatafiltration raterespiration ratemicroalgae |
| spellingShingle | Laureen Morillo Manalo Annabelle del Norte Campos Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions Science Diliman Paphia undulata filtration rate respiration rate microalgae |
| title | Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions |
| title_full | Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions |
| title_fullStr | Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions |
| title_full_unstemmed | Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions |
| title_short | Filtration and respiration rates of the short-necked clam Paphia undulata (Born, 1778) (Mollusca, Pelecypoda: Veneridae) under laboratory conditions |
| title_sort | filtration and respiration rates of the short necked clam paphia undulata born 1778 mollusca pelecypoda veneridae under laboratory conditions |
| topic | Paphia undulata filtration rate respiration rate microalgae |
| url | http://journals.upd.edu.ph/index.php/sciencediliman/article/view/2082 |
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