Ontogenetic Structure and Temporal Patterns of Summer Ichthyoplankton in Upper Course of the Xijiang River, SW China
1
College of Life Science and Technology, Guangxi University, Nanning 350000, China
2
College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541000, China
3
School of Marine Sciences, Guangxi University, Nanning 350000, China
4
Bureau of Hydrology and Water Resources, Pearl River Conservancy Commission of Ministry of Water Resources, Guangzhou 510000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Epaminondas D. Christou
Water 2021, 13(5), 703; https://doi.org/10.3390/w13050703
Received: 1 February 2021
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Revised: 2 March 2021
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Accepted: 3 March 2021
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Published: 5 March 2021
(This article belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
The summer ichthyoplankton characteristics in the Laibin section of the Xijiang River were analyzed based on a survey during summer 2017. The ontogenetic structure and temporal patterns of ichthyoplankton and the correlation between environmental parameters and the temporal patterns were investigated. A total of 10,665 eggs and 447 larval belonging to four orders, ten families, and 28 species were collected. According to the flood regime, summer is divided into three periods (pre-flood, flood period, and post-flood). Ichthyoplankton proved to be heterogeneous between periods in summer with differences in the composition and abundance. The assemblages were distinguished by multiple analytical tools, and presented a chronological pattern of marked variability in composition of the species between the periods, and under the strong influence of flood. The assemblages were mainly represented by eggs of S. wui Fang and S. robusta in the pre-flood period, S. argentatus and S. macrops in the flood period, and H. leucisculus and S. curriculus in the post-flood period, while, the larval occurred mainly in the flood period. Understanding these temporal patterns of the upper course of the Xijiang River is useful for the recruitment of fish resources and conservation of fish community diversity.
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Keywords:
ichthyoplankton; temporal patterns; spawning; Xijiang River
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MDPI and ACS Style
Gao, M.; Wu, Z.; Tan, X.; Huang, L.; Feng, J.; Rad, S. Ontogenetic Structure and Temporal Patterns of Summer Ichthyoplankton in Upper Course of the Xijiang River, SW China. Water 2021, 13, 703. https://doi.org/10.3390/w13050703
AMA Style
Gao M, Wu Z, Tan X, Huang L, Feng J, Rad S. Ontogenetic Structure and Temporal Patterns of Summer Ichthyoplankton in Upper Course of the Xijiang River, SW China. Water. 2021; 13(5):703. https://doi.org/10.3390/w13050703
Chicago/Turabian StyleGao, Minghui, Zhiqiang Wu, Xichang Tan, Liangliang Huang, Jie Feng, and Saeed Rad. 2021. "Ontogenetic Structure and Temporal Patterns of Summer Ichthyoplankton in Upper Course of the Xijiang River, SW China" Water 13, no. 5: 703. https://doi.org/10.3390/w13050703
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