Trophic niches of four Diaphus species in the adjacent waters of the Xisha area of the South China Sea
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  • SONG Xiaoyu

    SONG Xiaoyu

    College of Fishery, Zhejiang Ocean University, Zhoushan 316000 , China ;South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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  • LIU Yong

    LIU Yong

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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  • LI Chunhou

    LI Chunhou

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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  • SHI Juan

    SHI Juan

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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  • ZHAO Jinfa

    ZHAO Jinfa

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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  • WANG Teng

    WANG Teng

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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  • KONG Xiaolan

    KONG Xiaolan

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China
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  • JIANG Yan’e

    JIANG Yan’e

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China
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  • KANG Zhipeng

    KANG Zhipeng

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Key Laboratory of South ChinaSea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs , Observation andResearch Station of Pearl River Estuary Ecosystem, Guangdong Province , Guangdong Provincial Key Laboratory ofFishery Ecology and Environment, Guangzhou 510300 , China ;Scientific Observation and Research Station of Xisha Island Reef Fishery Ecosystem of Hainan Province, KeyLaboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya TropicalFisheries Research Institute, Sanya 572018 , China
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Clc Number:

S931

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    Abstract:

    To explore the feeding habits and trophic niche of mesopelagic fish in the adjacent sea area of Xisha in the South China Sea, this study focused on four mesopelagic fish: Diaphus splendidus, Diaphus mollis, Diaphus fulgens, and Diaphus luetkeni. Carbon and nitrogen stable isotope technique was used to investigate the trophic levels, trophic niches, and primary food sources of these four species. The results showed that: (1) The δ15N values of the four species ranged from 8.31‰ to 11.08‰, and the δ13C values ranged from –21.88‰ to –18.19‰; (2) There were differences in trophic levels among the four species, with D. luetkeni (3.75) > D. splendidus (3.63) > D. fulgens (3.57) > D. mollis (3.41); (3) D. fulgens had a largest trophic niche width and a stronger ability to utilize bait resources. The trophic niche width of D. splendidus was the smallest, and which had strong selectivity and feeding specificity towards bait organisms; (4) There was a certain competitive relationship in food resource intake among the four species, but there was no competition between D. luetkeni and D. mollis; (5) Bayesian mixture models indicated that zooplankton was the main food source for the four mesopelagic fish. This study revealed the main food sources and trophic niche characteristics of the four mesopelagic fish species in the adjacent sea area of Xisha, providing basic data for the study of the feeding characteristics and nutritional structure relationships of mesopelagic fish, and was significant for further research on the energy flow and material cycling in marine ecosystems.

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宋晓宇,刘永,李纯厚,石娟,赵金发,王腾,孔啸兰,江艳娥,康志鹏. 南海西沙毗邻海域四种眶灯鱼的营养生态位[J]. Jounal of Fishery Sciences of China, 2024,[volume_no](2):209-218

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History
  • Received:November 10,2023
  • Revised:January 19,2024
  • Online: April 30,2024
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