http://scholars.ntou.edu.tw/handle/123456789/17468
標題: | Importance of prey size on investigating prey availability of larval fishes | 作者: | Huang, Yu-Hsuan Tao, Hsiao-Hang Gong, Gwo-Ching Hsieh, Chih-hao |
公開日期: | 18-五月-2021 | 出版社: | PUBLIC LIBRARY SCIENCE | 卷: | 16 | 期: | 5 | 來源出版物: | PLOS ONE | 摘要: | Prey availability plays an important role in determining larval fish survival. Numerous studies have found close relationships between the density of mesozooplankton and larval fishes; however, emerging studies suggest that small-size zooplankton are more important prey for some larval fish species. One arising question is whether the size of zooplankton determines the relationship between zooplankton and larval fish community in natural environments. To address this question, we collected small-size (50-200 mu m) zooplankton, mesozooplankton (> 330 mu m), and larval fish using three different mesh-size (50, 330, 1000 mu m, respectively) nets in the East China Sea, and examined their relationships in density. Both meso- and small-size zooplankton densities showed positive relationships with larval fish density, while the relationship is much stronger for the small-size zooplankton. Specifically, the smallest size classes (50-75 and 75-100 mu m) of small-size zooplankton showed the highest positive relationships with larval fish density. Temperature, salinity, and chlorophyll-a concentration did not significantly explain larval fish density. Based on these findings, we demonstrate the importance of considering prey size when investigating prey availability for larval fishes. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/17468 | ISSN: | 1932-6203 | DOI: | 10.1371/journal.pone.0251344 |
顯示於: | 海洋環境與生態研究所 14 LIFE BELOW WATER |
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