共生珊瑚异养营养研究进展

共生珊瑚的异养营养指有虫黄藻共生的珊瑚在同化作用过程中,除通过虫黄藻光合作用获取营养之外,还可以从外界环境中直接摄取现成的有机物,经消化吸收后转变为自身的组成物质或储存为能量.国内外异地养殖或繁育虫黄藻共生珊瑚的研究多集中在光照、水流、水质等条件对珊瑚生长的影响,对共生珊瑚异养营养需求与供应方面的关注较少.本文从共生珊瑚异养营养来源、影响共生珊瑚异养营养供应的因素以及研究手段等方面,对国内外研究进展进行了综述,探讨异养营养供应对共生珊瑚的意义.总的来说,目前共生珊瑚异养营养的研究尚处于起步阶段,不论是研究方法或者珊瑚选择摄食的内在机制,都需要深入探究.

Progress of heterotrophic studies on symbiotic corals

Heterotrophy of zooxanthellae symbiotic corals refers to the nutrition directly coming from food absorption, not the nutrition obtained from photosynthesis. Most ex situ propagation of symbiotic corals focused on the effects of irradiation, flow rate and water quality on corals, few of them involved in the demand and supply of coral heterotrophic nutrition. This paper reviewed the significance of heterotrophic nutrient supply to symbiotic corals from the sources of coral heterotrophic nutrition, the factors affecting the supply of coral heterotrophic nutrient, and the methods of how to study the coral heterotrophy. In general, the research of coral heterotrophy is just at the beginning stage, and future studies should focus on the inherent mechanism of coral feeding selection and developing more effective research methods.