Sporophyll of Undaria pinnatifida: a potential feed for the production of high-quality gonads in the sea urchin Mesocentrotus nudus (A. Agassiz, 1864)
Sporophyll of Undaria pinnatifida: a potential feed for the production of high-quality gonads in the sea urchin Mesocentrotus nudus (A. Agassiz, 1864)
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Undaria pinnatifida 的孢子叶：海胆 Mesocentrotus nudus 中生产高质量性腺的潜在饲料（A. Agassiz，1864）
DOI：
10.1007/s10811-020-02041-3
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发表时间：
2020
影响因子：
3.3
通讯作者：
Y. Agatsuma
中科院分区：
文献类型：
--
作者：
S. Takagi;Y. Murata;E. Inomata;Y. Agatsuma
以前的研究表明，在孢子体晚期将新鲜的日本海藻喂给裸露中球海胆可以提高海胆的性腺质量。特别是，日本血吸虫的基叶部分在成熟过程中积累了氨基酸，极大地增强了性腺的甜味和鲜味。在海带中，资源积累在叶片中生长，然后在孢子体晚期转移到孢子叶成熟。在本研究中，我们研究了5-7月从不育的日本血吸虫中摄食羽状孢子叶对性腺质量(大小、颜色(L*a*b*)和味道(游离氨基酸))的影响，并与饲喂羽状孢子体(阴性对照)和日本血吸虫基叶部分(阳性对照)的效果进行了比较。喂食裸露支原体。富含蛋白质、碳水化合物、总丙氨酸和游离丙氨酸的羽状孢子叶素改善了裸子蟹性腺的大小和颜色，增加了性腺中的丙氨酸含量，降低了精氨酸含量，与饲喂日本血吸虫基叶部分的结果相似。海胆性腺中的游离谷氨酸含量增加，苦味氨基酸含量降低，说明摄食孢子叶素对性腺口感的改善作用大于摄食日本血海胆基叶部分。本研究首次表明，羽衣藻孢子体是一种具有提高裸鼠性腺味觉的高潜力饲料。为了缩短裸露分枝杆菌培养的持续时间，必须确定能够提高性腺质量的合适饲养期。
Previous study has shown that feeding freshSaccharina japonicakelp at the late sporophyte stage toMesocentrotus nudusfrom a barren can improve the gonad quality of the sea urchin. In particular, the basal frond portion ofS.japonica, which accumulates amino acids during maturation, greatly enhances the sweet and umami taste of the gonads. In the kelpUndaria pinnatifida, resources are accumulated in the blade for growth, then translocated to the sporophyll for maturation at the late sporophyte stage. In this study, we demonstrate the effects of feedingU.pinnatifidasporophyll toM.nudusfrom a barren from May to July on gonad quality (size, color (L*a*b*), and taste (free amino acids)) compared with the effects of feeding theU.pinnatifidamidrib (negative control) and the basal frond portion ofS.japonica(positive control). FeedingM.nudustheU. pinnatifidasporophyll, which has high protein, carbohydrate, and total and free alanine contents, improvedM.nudusgonad size and color and increased alanine content and decreased arginine content in the gonad, similar to the results of feedingM.nudusthe basal frond portion ofS.japonica. The sporophyll increased free glutamic acid and decreased bitter-tasting amino acid contents in the gonads of sea urchins, indicating that feeding of the sporophyll improved the gonad taste more than feeding of the basal frond portion ofS.japonica. This study first indicated that the sporophyll ofU.pinnatifidais a high potential feed to improve gonad taste ofM.nudus. The appropriate feeding period in which gonad quality can be improved must be confirmed in order to shorten the duration ofM.nudusculture.