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首页> 外文期刊>Russian journal of marine biology >Responses of Embryos and Larvae of the Starfish Asterias amurensis to Changes in Temperature and Salinity
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Responses of Embryos and Larvae of the Starfish Asterias amurensis to Changes in Temperature and Salinity

机译：海星海星胚和幼虫对温度和盐度变化的响应

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摘要

We studied the effects of different combinations of temperature (5, 10, 14, 17, 20, and 22℃) and salinity (from 32 to 8 per thousand) on the development of the starfish Asterias amurensis Luetken from Vostok Bay, Sea of Japan. Embryonic development is the most vulnerable stage; it passes successfully at 10-17℃ and the salinity range of 32 to 26 per thousand. Blastulae are the most tolerant of changing environmental factors. They survive and develop at the temperatures of 5-17℃ and in the salinity range of 32-18 per thousand. Gastrulae and bipinnariae survive under higher temperature values and salinity from 32 to 20 per thousand. The tolerance for decreased salinity during the process of fertilization and in the latest stage of development, the brachiolaria with the developing juvenile starfish, was confined to the salinity range of 32-22 per thousand, which agrees with the tolerance of adult starfish Asterias amurensis. Thus, for normal development of the Amur starfish in the early stages, some particular conditions of temperature and salinity are required. This is, probably, due to adaptive capabilities of each developmental stage and the peculiarities of the ecological conditions at particular depths.
机译：我们研究了温度（5、10、14、17、20和22℃）和盐度（每千32至8个）的不同组合对日本海沃斯托克湾海星Asterias amurensis Luetken发育的影响。胚胎发育是最脆弱的阶段。它在10-17℃成功通过，盐度范围为千分之32至26。爆破霉菌对变化的环境因素最耐受。它们可以在5-17℃的温度和盐度范围为32-18 /千的环境中生存和发育。 tru和双子叶蕨在较高的温度值和盐度（每千分之32至20）下生存。在受精过程中以及在发育的最新阶段，即正在发育的幼小海星的腕足类对盐度降低的耐受性被限制在每千32至22的盐度范围内，这与成年海星Asterias amurensis的耐受性一致。因此，为了使阿穆尔海星在早期正常发育，需要一些特定的温度和盐度条件。这可能是由于每个发育阶段的适应能力以及特定深度的生态条件的特殊性。

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