Spatial variability in the abundance and prey selection of the corallivorous snail Drupella spp. in the southeastern Hainan Island, China
Spatial variability in the abundance and prey selection of the corallivorous snail Drupella spp. in the southeastern Hainan Island, China
复制标题
食珊瑚蜗牛 Drupella spp 的丰度和猎物选择的空间变异性。
DOI：
10.3389/fmars.2022.990113
复制
发表时间：
2022-08
影响因子：
3.7
通讯作者：
Hui Huang
中科院分区：
文献类型：
--
作者：
Xinming Lei;Chengyue Liu;Yuyang Zhang;Xiaolei Yu;Jianhui Yang;Yong Luo;Guowei Zhou;Hui Huang
全球气候变化已造成全球生物多样性和生态系统功能的广泛丧失，特别是在热带浅海的珊瑚礁。由于食珊瑚蜗牛对印度洋-太平洋地区的珊瑚礁构成了相当大的扰动，它正在成为对海南岛、南中国海域珊瑚健康和恢复的威胁，但目前对其空间分布、捕食偏好和相关影响因素的认识还存在差距。因此，我们研究了Drupella spp.的丰度分布。与珊瑚猎物的选择性、可用性和营养价值有关。钉螺密度在研究区呈不均匀分布，平均为0.72±0.32ind m−2(变化范围为0.09±0.03~1.78±0.39ind m−2)，珊瑚覆盖率较高的地区钉螺密度普遍较高，其偏好珊瑚稀少的地区钉螺密度较低。尽管蜗牛表现出积极的偏好，但它们通过改变猎物的丰度和可获得性来表现出食物的可塑性。此外，我们发现珊瑚猎物的选择性指数与底物类型有关，猎物的营养价值是捕食偏好的另一个重要决定因素，这表明特定的珊瑚礁栖息地和环境背景可能会改变Drupella spp的捕食偏好。综上所述，这些结果为Drupella spp.这是海南岛珊瑚礁地区常见的珊瑚群之一，我们建议大规模监测方案评估时空趋势，以更好地了解与人为和自然影响有关的捕食动态。
Global climate change has caused extensive loss of biodiversity and ecosystem function globally, particularly in coral reefs in shallow tropical waters. As the corallivorous snails represent considerable disturbances to coral reefs across Indo-Pacific region, it is becoming a threat to coral health and recovery in the Hainan Island, South China Sea, but current-knowledge gap remains on the spatial distribution, prey preferences, and the influence factors related. Thus, we investigated the abundance distribution of Drupella spp. in relation to coral-prey selectivity, availability, and nutritional value. The snail density was heterogeneously distributed in the study area with an average of 0.72 ± 0.32 ind m −2 (varying from 0.09 ± 0.03 to 1.78 ± 0.39 ind m −2 ), and the snail density was found generally higher in locations with higher coral cover, which resulted in much lower density where their preferred corals became scarce. Despite the snails showing a positive preference for Acroporidae corals, they displayed dietary plasticity by changing with prey abundance and availability. Further, we found the electivity index of the coral prey related to the substrate types, and the nutritional value of prey was an additional important determinant in the prey preference, suggesting that the specific reef habitat and environmental context may alter the prey preference of Drupella spp. Combined, these results provide preliminary evidence that Drupella spp. is among the common corallivories in the reef regions of Hainan Island, and we recommend that large-scale monitoring programs assess the spatial-temporal trends to better understand the dynamics of predation linked to both anthropogenic and natural impacts.
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影响因子：
3.5
作者：
R. Cumming;D. McCorry
通讯作者：
R. Cumming;D. McCorry
影响因子：
1.4
作者：
Yuyang Zhang;Hui Huang;Jieying Huang;F. You;J. Lian;Jianhui Yang;C. Wen
通讯作者：
Yuyang Zhang;Hui Huang;Jieying Huang;F. You;J. Lian;Jianhui Yang;C. Wen
DOI：
--
发表时间：
1990-03
期刊：
Diversity
影响因子：
--
作者：
J. Keesing
通讯作者：
J. Keesing
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
Marti J. Anderson;Raymond N. Gorley;Kelsey S. Clarke;M. Anderson;Raymond N. Gorley;K. Clarke;Mj Andersom
通讯作者：
Marti J. Anderson;Raymond N. Gorley;Kelsey S. Clarke;M. Anderson;Raymond N. Gorley;K. Clarke;Mj Andersom
影响因子：
2.6
作者：
V. Schoepf;J. Herler;M. Zuschin
通讯作者：
V. Schoepf;J. Herler;M. Zuschin