Trophic ecology of the facultative symbiotic coral Oculina arbuscula
Trophic ecology of the facultative symbiotic coral Oculina arbuscula
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DOI：
10.3354/meps10750
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发表时间：
2014-01-01
影响因子：
2.5
通讯作者：
Nejstgaard, Jens C.
中科院分区：
文献类型：
--
作者：
Leal, Miguel C.;Ferrier-Pages, Christine;Nejstgaard, Jens C.
共生珊瑚营养复杂，依赖自养和异养。在这里，研究了自然条件下温带兼性共生石珊瑚 Oculina arbuscula 的营养。通过测定海水和沉积物中共生和非共生菌落组织、光合内共生体和不同潜在食物来源（浮游生物和颗粒有机物）的碳和氮同位素特征来评估春季和秋季共生和非共生菌落的营养。无论季节如何，共生菌落的营养主要来自其内共生体。然而，O. arbuscula 的非共生菌落优先依赖沉积物有机物以及微微浮游生物和纳米浮游生物。
Symbiotic corals are trophically complex, relying on both auto-and heterotrophy. Here, the nutrition of the temperate facultative symbiotic scleractinian coral Oculina arbuscula was investigated under natural conditions. Nutrition of symbiotic and aposymbiotic colonies during spring and fall was assessed by determining the carbon and nitrogen isotope signature of their tissues, photosynthetic endosymbionts and different potential food sources (plankton and particulate organic matter) in seawater and sediment. The nutrition of symbiotic colonies was primarily derived from their endosymbionts, regardless of the season. However, aposymbiotic colonies of O. arbuscula relied preferentially on sediment organic matter as well as pico- and nanoplankton (