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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Estimation of the growth pattern of Baculogypsina sphaerulata (Foraminifera) in a tropical environment using a floating chamber method
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Estimation of the growth pattern of Baculogypsina sphaerulata (Foraminifera) in a tropical environment using a floating chamber method

机译：利用浮箱法估算热带环境中的拟杆菌（Baculogypsina sphaerulata（Foraminifera））的生长方式

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摘要

Calcium carbonate shells produced by large benthic foraminifers (LBF) are major components in sediments on coral reef islands. Quantifying growth patterns of LBFs is important for accurate estimation of calcium carbonate production. To quantify the growth pattern of Baculogypsina sphaerulata in a tropical area, we developed a novel rearing method with high survival rate (＞90%) by creating constant disturbance with the combination of a floating chamber and coral sand. Through the rearing experiments, coral sand has a significant inhibitory effect on lethal epiphyte infestation on B. sphaerulata in a rearing chamber. This implies that the inhibitory effect by such disturbance on the epiphyte may be one of the reason that B. sphaerulata prefer the most exposed areas among LBFs. The novel rearing method allowed the quantification of the relationship between size and growth rate. The growth rate of B. sphaerulata showed size dependence with a peak at 0.8-1.2 mm~2, and development time to adult size was estimated at 1.3 year with substantial variation induced by variability in growth parameters. The estimated development time is similar to that reported in subtropical areas (1.5 year). This quantified growth pattern of the species will apply to the analysis of population dynamics and estimation of CaCO_3 productions of the species in a tropical area.
机译：大型底栖有孔虫（LBF）产生的碳酸钙壳是珊瑚礁岛上沉积物中的主要成分。定量LBF的生长方式对于准确估算碳酸钙的产量很重要。为了量化热带地区Baculogypsina sphaerulata的生长模式，我们通过结合漂浮室和珊瑚砂产生持续干扰，开发了一种新的饲养方法，具有较高的成活率（＞ 90％）。通过饲养实验，珊瑚砂对饲养室内球形芽孢杆菌的致命附生植物侵染具有显着的抑制作用。这表明，这种干扰对附生植物的抑制作用可能是球形芽孢杆菌偏爱LBF中最暴露区域的原因之一。新颖的饲养方法可以量化大小和生长率之间的关系。球形芽孢杆菌的生长速率显示出大小依赖性，在0.8-1.2mm〜2处达到峰值，估计到成年大小的发育时间为1。3年，生长参数的变化引起了显着的变化。估计的开发时间类似于在亚热带地区报道的开发时间（1.5年）。该物种的这种量化的生长方式将应用于种群动态分析和热带地区该物种的CaCO_3产量估算。

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