热带海洋学报 ›› 2023, Vol. 42 ›› Issue (4): 155-165.doi: 10.11978/2022219CSTR: 32234.14.2022219

• 海洋生物学 • 上一篇    下一篇

广西涠洲岛大型海藻场及其邻近海域桡足类群落结构演替特征

郭键林1(), 孙显2,3, 杨宇峰1, 王庆1()   

  1. 1.暨南大学生态学系, 人与自然生命共同体实验室, 南方海洋科学与工程广东省实验室(珠海), 广东 广州 510632
    2.中山大学海洋科学学院, 海洋生物资源与环境珠海重点实验室, 广东 珠海 519082
    3.广东省海洋资源与近岸工程重点实验室, 广东 珠海 519000
  • 收稿日期:2022-10-12 修回日期:2022-12-10 出版日期:2023-07-10 发布日期:2022-12-12
  • 作者简介:

    郭键林(1997—), 男, 广东省梅州市人, 硕士研究生, 从事浮游动物生态学研究。email:

  • 基金资助:
    南方海洋科学与工程广东省实验室(珠海)资助项目(SML2021SP203); 国家自然科学基金面上项目(41977268); 国家自然科学基金面上项目(32271684)

The succession characteristics of copepod community structure in the seaweed bed and its adjacent waters in the Weizhou Island, Guangxi Province

GUO Jianlin1(), SUN Xian2,3, YANG Yufeng1, WANG Qing1()   

  1. 1. Department of Ecology, Key Laboratory of Philosophy and Social Science in Guangdong Province Jinan University, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou 510632, China
    2. School of Marine Sciences, Zhuhai Key Laboratory of Marine Bioresources and Environment, Sun Yat-sen University, Zhuhai 519082, China
    3. Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519000, China
  • Received:2022-10-12 Revised:2022-12-10 Online:2023-07-10 Published:2022-12-12
  • Supported by:
    Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)(SML2021SP203); National Natural Science Foundation of China(41977268); National Natural Science Foundation of China(32271684)

摘要:

于2021年7月和11月、2022年1月和4月对广西涠洲岛大型海藻场及其邻近海域的桡足类及其休眠卵进行了调查。在水体中共鉴定出桡足类43种, 优势种为锥形宽水蚤(Temora turbinata)、微刺哲水蚤(Canthocalanus pauper)、强额拟哲水蚤(Pavocalanus crassirostris)等哲水蚤, 平均丰度为(105±22)ind·m-3; 大型海藻藻体附着桡足类10种, 优势种为尖额谐猛水蚤(Euterpina acutifrons)、硬鳞暴猛水蚤(Clytemnestra scutellata)、小毛猛水蚤(Microsetella norvegica)等猛水蚤, 平均丰度为(1.17±0.16)×105ind·m-3, 藻体附着桡足类丰度远高于水体中桡足类丰度(P<0.01); 沉积物中桡足类休眠卵平均丰度为(171±55)×104ind·m-3, 平均潜在补充量为(109±40)×104ind·m-3, 平均萌发率为64%±6%。在马尾藻生长茂盛期(4月), 表层沉积物中休眠卵丰度、潜在补充量与萌发率显著高于其他季节(P<0.05)。调查表明, 研究海域桡足类具有较高的均匀度(0.88)和物种多样性(2.66)。随机森林模型与相关性网络分析均显示, 涠洲岛海域桡足类的优势种微刺哲水蚤重要性较高, 且与其他物种关系紧密。马尾藻生长促进休眠卵萌发, 导致水体中桡足类丰度增高, 藻体附着桡足类丰度随水体桡足类丰度增加而升高。马尾藻的生长和凋落过程是涠洲岛海藻场生态系统中桡足类群落结构演变的重要驱动因素。

关键词: 涠洲岛, 马尾藻, 桡足类, 休眠卵

Abstract:

A survey of copepods and their resting eggs in the seaweed bed and its adjacent waters in the Weizhou Island, Guangxi Province was conducted in July and November 2021, and January and April 2022. A total of 43 species of copepods were identified in the water bodies, with an average abundance of 105±22ind·m-3, and the dominant species were Temora urbinate, Cantocalanus papper, Pavocalanus crassirostris and other Calanidae; 10 species of copepods attached to the seaweed were identified, with an average abundance of (1.17±0.16)×105ind·m-3, and the dominant species were Euterpina acutifrons, Clytemnestra scutellata, Microsetella norvegica and other Harpacticoida. The abundance of epiphytic copepods was much higher than that in the water bodies (P<0.01). The average abundance, potential recruitment and hatching rate of resting eggs was (171±55)×104ind·m-3, (109±40)×104ind·m-3 and 64%±6%, respectively. During the growth period of Sargassum (April), the abundance of resting eggs, the potential recruitment and the hatching rate were significantly higher than those in other seasons (P<0.05). Results show that the copepods in the seaweed bed of the Weizhou Island had high evenness index (0.88) and species diversity (2.66). The analysis of random forest model and correlation network showed that the dominant species (Canthocalanus pauper) were closely related to other species and are of great importance. The growth of Sargassum promotes the hatching of resting eggs and increases the abundance of copepods in the water body. The abundance of epiphytic copepods increases with the increase of the copepod abundance in the water body. Results show that the growth and decomposition of Sargassum are important drivers of the succession of copepod community structure in the seaweed ecosystem.

Key words: Weizhou Island, Sargassum, copepod, resting egg