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| | Brief introduction to mariculture of five selected species in China |
 | | Razor clams are unlike other bivalves, such as the scallop, that frequently move over long distances; they tend to dwell in one spot throughout their life. |
 | | Fertilization of the razor clam gametes occurs externally in the surrounding seawater. |
 | | The growth rate of razor clams is closely related to the prevailing ambient conditions, such as stocking density, seabed texture, availability and type of food organisms, water temperature, salinity, etc. The optimum temperature and salinity for razor clam is 15–25 °C and 5–28 ppt, respectively. |
| www.fao.org /docrep/field/003/AB736E/AB736E05.htm (1324 words) |
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