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Chinese Journal of Applied Ecology. 2020, (01) Core

Food source and feeding habit of Helice tientsinensis from the common reed vegetation in high marsh of Yellow River Delta,ChinaChinese Full Text

LAN Si-qun;ZHANG Li-wen;YI Hua-peng;XU Chang-lin;LU Feng;FENG Guang-hai;HAN Guang-xuan;School of Resources and Environmental Engineering,Ludong University;CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences(CAS);School of Life Sciences,Fudan University;Administration Bureau of the Yellow River Delta National Nature Reserve;

Abstract: Investigating the composition of food sources with stable isotope method can provide direct evidence for the top-down control in the coastal wetland. In this study,we examined food source and feeding habit of Helice tientsinensis of common reed（ Phragmites australis） vegetation in high marsh of Yellow River Delta. The results showed that the density of crab was（ 5. 5 ± 1. 5）ind·m-2,with the behavior of climbing P. australis to feed on the leaves at night. Under the same indoor experimental condition,H. tientsinensis showed feeding preference on fresh leaves of P. australis. The stable isotope food source analysis showed that the leaves of P. australis were one of the important food sources of H. tientsinensis in the field. There were temporal variations in the proportion of fresh leaves [May:（ 6.4± 4.9） %,July:（ 5.8 ± 4.9） %,September:（ 12.5 ± 8.8） %] and dead leaves [May:（ 12.4±7.8） %,July:（ 15.5±9.9） %,September:（ 15.1±9.4） %]. Therefore,H. tientsinensis could inhibit P. australis’ s growth and affect litter decomposition through feeding disturbance behavior.
Keywords：

Yellow River Delta; Helice tientsinensis; Phragmites australis; stable isotope; food source; feeding habit;

  • DOI：

    10.13287/j.1001-9332.202001.034

  • Series：

    (A) Mathematics/ Physics/ Mechanics/ Astronomy; (D) Agriculture

  • Subject：

    Aquaculture and Fishery

  • Classification Code：

    S931.1

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