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热带海洋学报

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南海中部珊瑚环礁潟湖与礁坡浮游幼虫的群落差异及影响因素

周思怡1, 2, 柯志新1, 连喜平1, 3, 李开枝1, 王军星4, 谭烨辉1, 2, 3   

  1. 1. 广东省应用海洋生物学重点实验室, 中国科学院南海海洋研究所, 广东 广州 510301;

    2. 中国科学院大学, 北京 100049；

    3. 南海海洋生物标本馆, 中国科学院南海海洋研究所, 广东 广州 510301;

    4. 惠州市海洋技术中心, 广东 惠州 516000



  • 收稿日期:2025-09-29 修回日期:2025-12-23 接受日期:2026-01-07
  • 通讯作者: 谭烨辉
  • 基金资助:

    国家自然科学基金(32171548、42476130); 广东省科技计划项目(2023B1212060047; 2024B1212040008）

Differences in Planktonic Larval Communities and Their Influencing Factors between the Lagoon and Reef Slope of Coral Atolls in the Central South China Sea

ZHOU Siyi1, 2, KE Zhixin1 , LIAN Xiping1, 3, LI Kaizhi1, WANG Junxing4, TAN Yehui1, 2, 3   

  1. 1. Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Guangzhou 510301, China;

    2. University of Chinese Academy of Sciences, Beijing 100049, China;

    3.Marine Biodiversity Collections of South China Sea, South China Sea Institute of Oceanology, Guangzhou 510301, China;

    4. Marine Technology Center of Huizhou, Huizhou 516000, China



  • Received:2025-09-29 Revised:2025-12-23 Accepted:2026-01-07
  • Supported by:

    National Natural Science Foundation of China (32171548, 42476130); Science and Technology Planning Project of Guangdong Province (2023B1212060047, 2024B1212040008)

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摘要： 摘要: 海洋浮游幼虫是浮游动物中的重要类群之一, 在珊瑚礁海域主要是由各类游泳生物和底栖生物的暂时性浮游幼体阶段构成, 对珊瑚礁生物多样性的维持、生态过程和资源补充具有重要作用, 目前对其在珊瑚礁生境中的分布特征及影响因素尚未明晰。基于2015年5-6月在南海中部6个珊瑚环礁的浮游动物采样, 系统分析了环礁中潟湖和礁坡两个不同生境浮游幼虫的分布特征, 并结合环境因子探讨其群落差异的主要因素。结果表明: 礁坡以鱼卵(Fish eggs)为主(41.1%±10%), 而潟湖则以十足目长尾类幼虫(Macrura larvae)占优势(76.7%±9.2%); 通过广义加性模型(GAM)分析发现长尾类幼虫丰度与潟湖盐度呈显著正相关(p<0.05), 鱼卵则与礁坡温度呈负相关(p<0.05), 说明潟湖浮游幼虫的丰度主要受盐度调控, 而礁坡的丰度则与温度密切相关。珊瑚环礁潟湖和礁坡的环境因子以及水文动力和捕食压力等因素的作用, 导致了浮游幼虫在珊瑚礁不同生境中分布格局的差异, 这一发现可为珊瑚礁生态系统的保护和管理策略提供重要的科学依据。

关键词: 浮游幼虫, 浮游动物, 群落特征, 珊瑚礁, 栖息地选择

Abstract: Abstract:  Planktonic larvae of zooplankton represent a significant component of zooplankton communities in coral reef ecosystems, primarily consisting of the temporary planktonic stages of various nektonic and benthic organisms. They play a crucial role in maintaining biodiversity, supporting ecological processes, and facilitating resource replenishment in coral reefs. However, their distribution patterns and influencing factors across different reef habitats remain limited. Based on zooplankton samples collected from six coral atolls in the central South China Sea during May–June 2015, this study systematically analyzed the distribution characteristics of planktonic larvae in two distinct habitats—the lagoon and the reef slope—and identified the main factors driving community differences in relation to environmental variables. The results revealed that fish eggs dominated the reef slope (41.1%±10%), whereas Macrura larvae were predominant in the lagoon (76.7%±9.2%). Generalized additive model (GAM) analysis indicated a significant positive correlation between the abundance of Macrura larvae and salinity in the lagoon (p < 0.05), while fish egg abundance was negatively correlated with temperature on the reef slope (p < 0.05). These findings suggest that larval abundance in the lagoon is mainly regulated by salinity, whereas on the reef slope, it is more closely associated with temperature. The observed differences in larval distribution between the lagoon and reef slope are likely driven by a combination of environmental factors, hydrodynamics, and predation pressure. This study provides important scientific insights for the conservation and management of coral reef ecosystems.

Key words: Planktonic larvae, Zooplankton, Community structure, Coral reef, Habitat selection