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首页> 外文期刊>水産增殖 >Survival of squid, Aka-ika, Sepioteuthis sp.1，hatched from cases exposed to stressful conditions during the early-middle embryonic stage of development
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Survival of squid, Aka-ika, Sepioteuthis sp.1，hatched from cases exposed to stressful conditions during the early-middle embryonic stage of development

机译：Squid，AKA-IKA，Sepioteuthis SP.1的存活，从暴露于早期胚胎发育期间暴露于压力条件的情况下孵化

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摘要

Egg cases with early-middle staged embryos of the oval squid Aka-ika, Sepioteuthis sp.1，that were spawned on an anemometer set in the deeper layers of the coastal waters of the Ryukyu Archipelago, were collected in 2013, 2016, and 2017. However, of these only the egg cases collected in 2016 were used in this study as they had been kept in stressful conditions; packed without seawater and kept in a refrigerator at 8°C for approximately 25 h immediately after collection and were then raised under normal captive conditions in the laboratory in order to examine the effects that exposure to low temperature and oxygen levels had on later embryonic development, hatching, and hatched juveniles. We also investigated the overall feasibility of aquaculture of this species. Embryonic development proceeded followed by hatching, and the hatched juveniles survived for over 4 months. These records were compared to the survival and growth of Aka-ika Sepioteuthis juveniles not exposed to stressful conditions during their embryonic development that hatched from egg cases spawned on an artificial spawning bed set in the coastal waters of the Ryukyu Archipelago in 2016. This comparison revealed that Aka-ika Sepioteuthis embryos can develop, hatch, survive, and grownormally, even under severe stress conditions during early-middle embryonic development. This suggests that the gelatinous coat of the egg case in cephalopods might function as barrier against changeable environments during the early life phase.
机译：在2013年，2013年，2016年，2016年，2016年和2017年，卵子鱿鱼的早期分阶段SP.1的卵形鱿鱼AKA-IKA，Sepioteuthis SP.1的Sepioteuthis SP.1的蛋白株在沿海水域沿海群岛的深层划分。 。但是，这些研究中只使用了2016年收集的卵案例，因为它们被保持在压力条件下;在没有海水的情况下包装，在收集后立即在8°C的冰箱中保持约25小时，然后在实验室的正常俘虏条件下抬起，以检查暴露于低温和氧水平的影响，孵化，孵化少年。我们还调查了该物种水产养殖的总体可行性。胚胎发育进行，然后进行孵化，孵化的少年存活超过4个月。将这些记录与AKA-IKA Sepioteuthis幼鸽的存活率和生长进行了比较，在胚胎发育期间没有暴露于胚胎发育中的压力条件，这在2016年在Ryukyu Archipelago沿海水域的人工产卵床上涂上卵子盒中孵化。这一比较揭示了即使在早期胚胎发育期间的严重应激条件下，AKA-IKA Sepioteuthis胚胎也可以发展，孵化，生存和生存和繁殖。这表明Cephalopods中蛋壳的凝胶状涂层可能在早期寿命期间用作抵抗可变环境的屏障。

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