Soldier crab (Dotilla myctiroides) distribution, food resources and subsequent role in organic matter fate in Ao Tang Khen, Phuket, Thailand

Kimberly K. Takagi; Phaothep Cherdsukjai; Izumi Mimura; Yuka Yano; Kanjana Adulyanukosol; Makoto Tsuchiya

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Soldier crab (Dotilla myctiroides) distribution, food resources and subsequent role in organic matter fate in Ao Tang Khen, Phuket, Thailand

机译：泰国普吉岛Ao Tang Khen的士兵蟹（Dotilla myctiroides）分布，食物资源及其在有机物命运中的作用

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This study aimed to elucidate Dotilla myctiroides (H. Milne-Edwards) food resources and how the soldier crab influences the organic matter composition on the intertidal flat. A preliminary assessment of D. myctiroides size, sex, and population distribution was conducted to clarify the characteristics of the inhabiting population. Overall, D. myctiroides size and abundance was normal across the tidal flat area. Comparison of different sediment types from the soldier crab habitat (surface sediments, igloos, burrow lining, burrow pellets, feeding pellets, and feces) using the fatty acid (FA) analysis technique revealed D. myctiroides removes organic matter via the significantly lower contributions of polyunsaturated FAs, essential FAs, and dinoflagellates in the feeding pellets. Dotilla myctiroides tissue analysis of the hepa-topancreas and hindgut in individuals that had been starved for 24 h confirmed not only the consumption of dinoflagellates, but diatoms and macroalgae as well. In addition, the FA metabolism within the digestive system implied the ability of the soldier crab to synthesize highly unsaturated FAs (HUFAs) such as 20:4n-6, 20:5n-3 and 22:6n-3.

机译：这项研究的目的是弄清白粉菌（H. Milne-Edwards）的食物资源，以及沙蟹如何影响潮间带有机物的组成。对myctiroides的大小，性别和种群分布进行了初步评估，以阐明居住种群的特征。总体而言，在潮滩区域，myctiroides的D. myctiroides大小和丰度正常。使用脂肪酸（FA）分析技术比较了战士蟹栖息地的不同沉积物类型（表层沉积物，冰屋，洞穴衬里，洞穴颗粒，饲料颗粒和粪便），发现D. myctiroides通过显着较低的作用去除了有机物饲料颗粒中的多不饱和脂肪酸，必需脂肪酸和鞭毛藻。对饥饿24小时的个体的肝胰脏和后肠的Dotilla myctiroides组织分析证实，不仅食用了鞭毛藻，而且也证实了硅藻和大型藻类的食用。另外，消化系统中的FA代谢暗示了螃蟹合成高度不饱和FA（HUFA）的能力，例如20：4n-6、20：5n-3和22：6n-3。

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来源
《Estuarine Coastal and Shelf Science》 |2010年第4期|p.611-617|共7页
作者
Kimberly K. Takagi; Phaothep Cherdsukjai; Izumi Mimura; Yuka Yano; Kanjana Adulyanukosol; Makoto Tsuchiya;
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作者单位

School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan;

Phuket Marine Biological Center, P.O. Box 60, Phuket 83000, Thailand;

School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan;

School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan;

Phuket Marine Biological Center, P.O. Box 60, Phuket 83000, Thailand;

Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 901-0213, Japan;

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正文语种 eng
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organic matter; dotilla myctiroides; fatty acids; biomarkers; thailand; phuket; ao tang khen (7° 48' 44" N, 98° 24' 17" E);

机译：有机物;点状菌丝体;脂肪酸;生物标志物泰国;普吉岛ao tang khen（北纬7°48'44“;东经98°24'17”）;

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机译：泰国普吉岛Ao Tang Khen的士兵蟹（Dotilla mictyroides）对有机物和养分动态的影响

Soldier crab (Dotilla myctiroides) distribution, food resources and subsequent role in organic matter fate in Ao Tang Khen, Phuket, Thailand

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