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首页> 外文期刊>Polar biology >Hemolymph molting hormone concentrations in red king crabs from the Barents Sea
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Hemolymph molting hormone concentrations in red king crabs from the Barents Sea

机译：巴伦支海红帝王蟹的血淋巴蜕皮激素浓度

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摘要

Recent declines in red king crab (Paralithodes camtschaticus) stocks in its native and introduced habitat have sparked interest in the development of aquaculture methods for this commercially important species. Little is known about the basic biology of this species and the factors controlling its growth rate. In this paper we present concentrations of circulating ecdysteroids (the hormones that control molting) in hemolymph of intermolt red king crabs in three coastal areas of the Barents Sea. Two molting hormones (20-hydroxyecdysone and ecdysone) were assayed. Mean levels of these ecdysteroids varied from 0.0 to 190.0 μg ml~(-1) and from 0.0 to 13.4 μg ml~(-1), respectively. These levels in general were higher in comparison with other decapod species. Concentrations of ecdysteroids were similar in male and female crabs and in injured (animals with at least one autotomized limb) and intact red king crabs. In contrast, the levels of circulating ecdysteroids were much higher in small (predominantly immature crabs) than in large adult animals because the latter have a lower molting probability (once per year) than smaller crabs (2-3 times per year). Our data can be used in further investigations of red king crab growth rates and their application to the development of aquaculture methods for this species.
机译：本地和引进栖息地的红色帝王蟹（Paralithodes camtschaticus）种群最近减少，引起了对该商业上重要物种的水产养殖方法发展的兴趣。关于该物种的基本生物学以及控制其生长速度的因素知之甚少。在本文中，我们介绍了巴伦支海三个沿海地区的互熔红色帝王蟹的血淋巴中循环蜕皮类固醇（控制蜕皮的激素）的浓度。测定了两种蜕皮激素（20-羟基蜕皮激素和蜕皮激素）。这些蜕皮类固醇的平均水平分别为0.0至190.0μgml〜（-1）和0.0至13.4μgml〜（-1）。与其他十足动物相比，这些水平通常更高。雄性和雌性螃蟹，受伤的（有至少一只肢体被自动切除的动物）和完整的红帝王蟹中蜕皮类固醇的含量相似。相比之下，小型（主要是未成熟的螃蟹）中循环蜕皮类固醇的含量要比大型成年动物高得多，因为大型成年动物的蜕皮几率（每年一次）比较小的螃蟹（每年2-3次）低。我们的数据可用于进一步研究红帝王蟹的生长速率及其在该物种水产养殖方法开发中的应用。

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