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In order to investigate the tolerance of temperature and salinity of Tapes dorsatus juveniles, ecological methods with the laboratory controlled system was used in this study. The results showed that: (1) in the temperature tolerance test, juveniles maintained 90%−100% survival rate at the low-temperature groups (4℃, 6℃, 8℃ and 10℃) for 0 d, 2 d, 3 d and 7 d and at the high-temperature groups (33℃, 34℃, 35℃ and 36℃) for 5 d, 4 d, 1 d and 0 d, respectively; (2) under temperature stress, at the low-temperature groups, the semilethal temperatures at 48 h, 96 h, 144 h and 192 h were 5.02℃, 7.68℃, 9.01℃ and 9.20℃. And in the high-temperature groups, the semilethal temperatures at 48 h, 96 h, 144 h and 192 h were 35.44℃, 34.74℃, 34.43℃ and 34.25℃, respectively. In the salinity tolerance test, (1) juveniles maintained 90%−100% survival rate at low-salinity groups (13.0, 15.6, 18.2, 20.8 and 23.4) for 1 d, 1 d, ≥9 d, ≥9 d and ≥9 d while in the high-salinity groups (41.6, 44.2, 46.8, 49.4 and 52.0) followed by 9 d, 2 d, 1 d, 1 d and 1 d, respectively; (2) the semilethal salinity at 48 h, 96 h, 144 h and 192 h in the low-salinity groups were 14.46, 16.02, 16.76 and 16.91, while in the high-salinity groups were >52.0, 51.79, 50.58 and 48.88, respectively; (3) for survival, the suitable and the optimum salinities of T. dorsatus juveniles were 16.91−48.20 and 18.20−41.60, respectively. For growth, the suitable and the optimum salinities were 23.58−45.15 and 33.90, respectively. The results indicated that T. dorsatus juveniles had strong tolerance to high temperature and were suitable for cultivation with higher temperatures in the southern sea area. The suitable survival salinity range was wide, and the optimal growth salinity was basically the same as the offshore sea water. T. dorsatus juveniles suitable for breeding in the offshore sea water.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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