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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >The uptake of dissolved organic material by the sea cucumber Parastichopus californicus (Stimpson) and its potential role in visceral regeneration
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The uptake of dissolved organic material by the sea cucumber Parastichopus californicus (Stimpson) and its potential role in visceral regeneration

机译：刺参（Stastpson）吸收海参中溶解的有机物及其在内脏再生中的潜在作用

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The sea cucumber Parastichopus californicus atrophies and regenerates its internal organs on an annual cycle. Previous research has suggested that during the period of maximal regeneration (January-March) no movement or feeding occurs; however metabolic rate is doubled compared to non-regenerative periods (June-August). Uptake of dissolved organic material (DOM) from the aqueous environment could provide an external source of biosynthetic materials for regeneration of the internal organs. P. califomicus were collected in the summer (actively moving and feeding, not degenerating or regenerating), winter (inactive, degenerating), and spring (inactive, regenerating). Animals were incubated in seawater containing a mixture of amino acids labeled with N-15 and C-13. Incorporation of N-15 (summer, winter, spring) and C-13 (summer, spring) by the respiratory trees was significantly higher than incorporation by other types of tissues. Additionally, dorsal and ventral epidermis, oral tentacles, digestive tract, muscle, and tube feet incorporated N-15 and/or C-13 during at least one season. These results demonstrate that certain tissues, especially the respiratory trees, of P. califomicus assimilate free amino acids from the sea water which could be used as biosynthetic materials for regeneration. These results also indicate that the respiratory trees may have a role in nutrition as well as respiration. (C) 2015 Elsevier B.V. All rights reserved.
机译：海参Parastichopus californicus萎缩并每年循环再生其内部器官。先前的研究表明，在最大再生时期（1月至3月），没有运动或进食。但是，与非再生期（6月至8月）相比，新陈代谢率增加了一倍。从水性环境中吸收溶解的有机物质（DOM）可以为内部器官的再生提供生物合成物质的外部来源。在夏季（活动和觅食，不退化或不活动），冬季（不活动，不活动）和春季（不活动，不活动）采集花栗假单胞菌。将动物在含有N-15和C-13标记氨基酸混合物的海水中孵育。呼吸树对N-15（夏季，冬季，春季）和C-13（夏季，春季）的掺入明显高于其他类型组织的掺入。另外，在至少一个季节中，背和腹表皮，口腔触手，消化道，肌肉和管脚掺入了N-15和/或C-13。这些结果表明，P。califomicus的某些组织，特别是呼吸树，吸收了海水中的游离氨基酸，可以用作生物合成物质进行再生。这些结果还表明，呼吸道树可能在营养和呼吸中发挥作用。 （C）2015 Elsevier B.V.保留所有权利。

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