Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets
Abstract Choice of microalgae diet affects production outcomes in bivalve hatcheries. This study aimed to identify an optimal microalgae diet to improve hard clam, Mercenaria mercenaria, juvenile production. Four microalgae species (Tisochrysis lutea, Pavlova lutheri, Chaetoceros gracilis and Cyclot...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-02-01
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| Series: | Aquaculture, Fish and Fisheries |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aff2.80 |
| _version_ | 1811168335385067520 |
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| author | Md Mahbubul Hassan Edward Perri Victoria Parks Susan Laramore |
| author_facet | Md Mahbubul Hassan Edward Perri Victoria Parks Susan Laramore |
| author_sort | Md Mahbubul Hassan |
| collection | DOAJ |
| description | Abstract Choice of microalgae diet affects production outcomes in bivalve hatcheries. This study aimed to identify an optimal microalgae diet to improve hard clam, Mercenaria mercenaria, juvenile production. Four microalgae species (Tisochrysis lutea, Pavlova lutheri, Chaetoceros gracilis and Cyclotella nana) in six dietary combinations were fed for 6 weeks; then, growth, survival and fatty acid profiles of juveniles were evaluated. The highest numerical growth and survival of juveniles were attained by feeding a tetra‐species microalgae diet, but no statistical difference was found by feeding bi‐ or tri‐species diets that consisted of a mix of flagellate and diatom microalgae. Significant differences in fatty acid profiles were found among clams fed different microalgae diets. A contrasting polyunsaturated fatty acid (PUFA) profile was found in juveniles fed flagellate‐ or diatom‐only diets. Clams fed flagellate‐only diets contained a higher percentage of docosahexaenoic acid (DHA) but a lower percentage of (n‐6) PUFAs, whereas those fed diatom‐only diets had a higher percentage of arachidonic acid (ARA) and eicosapentaenoic acid (EPA) but a lower percentage of DHA. In contrast, the percentage of EPA, DHA and ARA was neither very high nor very low in juveniles fed the tetra‐species diet. The complementary nutritional profile of the tetra‐species microalgae diet resulted in enhanced production and exhibited a more balanced fatty acid profile in clam tissue. The tetra‐species microalgae diet should be a preferable choice for feeding hard clam juveniles, but the cost of producing multiple microalgae species for hatchery/nursery operations should be taken into consideration as bi‐ and tri‐species diets provided statistically similar growth and survival. Results of this study can be used to improve productivity and profitability in M. mercenaria hatcheries. |
| first_indexed | 2024-04-10T16:24:28Z |
| format | Article |
| id | doaj.art-481269c9917743c393972f9394e1aa5a |
| institution | Directory Open Access Journal |
| issn | 2693-8847 |
| language | English |
| last_indexed | 2024-04-10T16:24:28Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Aquaculture, Fish and Fisheries |
| spelling | doaj.art-481269c9917743c393972f9394e1aa5a2023-02-09T07:49:00ZengWileyAquaculture, Fish and Fisheries2693-88472023-02-0131516010.1002/aff2.80Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae dietsMd Mahbubul Hassan0Edward Perri1Victoria Parks2Susan Laramore3Harbor Branch Oceanographic Institute Florida Atlantic University Fort Pierce Florida USAHarbor Branch Oceanographic Institute Florida Atlantic University Fort Pierce Florida USASeaventure Clam Co. Fort Pierce Florida USAHarbor Branch Oceanographic Institute Florida Atlantic University Fort Pierce Florida USAAbstract Choice of microalgae diet affects production outcomes in bivalve hatcheries. This study aimed to identify an optimal microalgae diet to improve hard clam, Mercenaria mercenaria, juvenile production. Four microalgae species (Tisochrysis lutea, Pavlova lutheri, Chaetoceros gracilis and Cyclotella nana) in six dietary combinations were fed for 6 weeks; then, growth, survival and fatty acid profiles of juveniles were evaluated. The highest numerical growth and survival of juveniles were attained by feeding a tetra‐species microalgae diet, but no statistical difference was found by feeding bi‐ or tri‐species diets that consisted of a mix of flagellate and diatom microalgae. Significant differences in fatty acid profiles were found among clams fed different microalgae diets. A contrasting polyunsaturated fatty acid (PUFA) profile was found in juveniles fed flagellate‐ or diatom‐only diets. Clams fed flagellate‐only diets contained a higher percentage of docosahexaenoic acid (DHA) but a lower percentage of (n‐6) PUFAs, whereas those fed diatom‐only diets had a higher percentage of arachidonic acid (ARA) and eicosapentaenoic acid (EPA) but a lower percentage of DHA. In contrast, the percentage of EPA, DHA and ARA was neither very high nor very low in juveniles fed the tetra‐species diet. The complementary nutritional profile of the tetra‐species microalgae diet resulted in enhanced production and exhibited a more balanced fatty acid profile in clam tissue. The tetra‐species microalgae diet should be a preferable choice for feeding hard clam juveniles, but the cost of producing multiple microalgae species for hatchery/nursery operations should be taken into consideration as bi‐ and tri‐species diets provided statistically similar growth and survival. Results of this study can be used to improve productivity and profitability in M. mercenaria hatcheries.https://doi.org/10.1002/aff2.80bivalvediethard clamMercenaria mercenariamicroalgae |
| spellingShingle | Md Mahbubul Hassan Edward Perri Victoria Parks Susan Laramore Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets Aquaculture, Fish and Fisheries bivalve diet hard clam Mercenaria mercenaria microalgae |
| title | Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets |
| title_full | Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets |
| title_fullStr | Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets |
| title_full_unstemmed | Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets |
| title_short | Growth, survival and fatty acid profile of hard clam, Mercenaria mercenaria, juveniles fed live microalgae diets |
| title_sort | growth survival and fatty acid profile of hard clam mercenaria mercenaria juveniles fed live microalgae diets |
| topic | bivalve diet hard clam Mercenaria mercenaria microalgae |
| url | https://doi.org/10.1002/aff2.80 |
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