黄海太平角鼠尾藻有性繁殖分配

应用生态学报 ›› 2011, Vol. 22 ›› Issue (08): 2167-2172.

黄海太平角鼠尾藻有性繁殖分配

潘金华1,张全胜2**,李晓捷1,江鑫1,张壮志1,王得宾1,韩厚伟1,王汝洲3

1山东东方海洋科技股份有限公司, 山东烟台 264003; 2烟台大学海洋学院, 山东烟台 264005; 3中国海监总队烟台经济技术开发区大队, 山东烟台 264006

出版日期:2011-08-18 发布日期:2011-08-18

Sexual reproductive allocation of Sargassum thunbergii at Taiping Cape of Yellow Sea.

PAN Jin-hua1, ZHANG Quan-sheng2, LI Xiao-jie1, JIANG Xin1, ZHANG Zhuang-zhi1, WANG De-bin1, HAN Hou-wei1, WANG Ru-zhou3

1Shandong Oriental Ocean Sci-Tech Co. Ltd., Yantai 264003, Shandong, China;2School of Oceanography, Yantai University, Yantai 264005, Shandong, China; 3Yantai Economic and Technological Development Zone Battalion of China Maritime Supervision, Yantai 264006, Shandong, China

Online:2011-08-18 Published:2011-08-18

摘要/Abstract

摘要： 以位于黄海的青岛太平角自然生长的鼠尾藻为对象，研究其有性繁殖分配动态及相关环境因子.结果表明：鼠尾藻于6月初开始进入有性繁殖期，于7月中旬海水温度22 ℃左右达到繁殖高峰，7月19日平均繁殖分配（RA）达76.7%，8月末有性繁殖结束.鼠尾藻繁殖分配与平均分枝长度呈显著线性相关(r=0.855,P<0.01).长度在10 cm以下的藻体在整个繁殖期内的RA较低，而长度在10 cm以上的藻体在成熟高峰期的RA在70.0%以上.析因方差分析表明，潮位和浪冲击度均对鼠尾藻有性繁殖分配有显著影响(潮位:F=175.62,P<0.001,浪冲击度:F=95.35,P<0.01)，且二者之间存在交互作用(F=9.14,P<0.05).其对RA的影响大小依次为潮位>浪冲击度>潮位×浪冲击度.

关键词: 鼠尾藻, 繁殖分配, 分枝长度, 潮位, 水流

Abstract: This paper studied the dynamics of reproductive allocation (RA) of Sargassum thunbergii during its sexual reproductive season and the related environmental factors at the Taiping Cape of Yellow Sea. The sexual reproduction of S. thunbergii initiated in early June, peaked in mid July when the sea
water temperature was about 22 ℃ (the mean proportion of biomass allocated to reproductive organs on July 19 was 76.7%), and ended in late August. The RA had a significant linear correlation with the average length of thallus branches (r=0.855,P<0.01). The thalli with a length less than 10 cm showed a lower RA in the whole sexual reproductive season, while the thalli longer than 10 cm had a RA up to averagely 70.0% at the peak maturing stage. UNIANOVA analysis showed that both tidal level and wave strength had significant effects on the RA of S. thunbergii (tidal level: F=175.62, P<0.01; wave strength: F=95.35,P<0.01), and there was a significant interaction between tidal level and wave strength (F=9.14,P<0.05). The sizes of the effects were in the order of tidal level > wave strength > tidal level × wave strength.

Key words: Sargassum thunbergii, reproductive allocation, branch length, tidal level, wave strength

潘金华,张全胜,李晓捷,江鑫,张壮志,王得宾,韩厚伟,王汝洲. 黄海太平角鼠尾藻有性繁殖分配[J]. 应用生态学报, 2011, 22(08): 2167-2172.

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