Journal of Northern Agriculture ›› 2025, Vol. 53 ›› Issue (5): 108-116.doi: 10.12190/j.issn.2096-1197.2025.05.11

• Aquaculture • Previous Articles     Next Articles

Longitudinal gradient pattern of fish community in the Hulan River

XIONG Shuhan1,2,3,4, LI Peilun1,2,3, LIU Jiacheng1,2,3, WANG Jilong1,2,3   

  1. 1. College of Fisheries and Life Science,Dalian Ocean University,Dalian 116023,China;
    2. Heilongjiang River Fisheries Research Institute,Chinese Academy of Fishery Sciences,Harbin 150070,China;
    3. Heilongjiang River Basin Fishery Resources and Environment Scientific Observation and Experiment Station,Ministry of Agriculture and Rural Affairs,Harbin 150070,China;
    4. National Agricultural Experimental Station for Fishery Resources and Environment,Fuyuan,Fuyuan 156500,China
  • Received:2025-03-31 Online:2025-10-20 Published:2026-01-20

Abstract: 【Objective】 To investigate the assembly mechanisms of fish community in the Hulan River and clarify their longitudinal gradient pattern,providing a basis for fish diversity conservation.【Methods】 Thirty-one sampling sites were set along the longitudinal gradient from the source to the estuary of the Hulan River for fish sampling. A two-way crossed ANOSIM was used to test the effect of different river sections on fish community structure. Similarity percentages was used to identify the key species maintaining the similarity of fish community structure in different river sections. Redundancy analysis was used to examine the relationship between fish taxa and the distance from the estuary.【Results】 A total of 4 128 fish individuals were surveyed,belonging to 37 species,30 genera,12 families,and 7 orders. The fish community structure showed significant spatial variation across the upper,middle,and lower reaches of the Hulan River(Global R=0.69,P<0.05). The succession of the fish community from the upper to the middle reaches was characterized by the loss of Lefua costata and Cottus czerskii,and the gain of Gobio cynocephalus,Acheilognathus macropterus,Abbottina rivularis,Rhodeus ocellatus,Cobitis granoci,Pseudorasbora parva and Gobio tenuicorpus. The succession from the middle to the lower reaches was characterized by the loss of G. cynocephalus,Phoxinus lagowskii,Barbatula nuda and C. granoci,and the gain of Hemiculter leucisculus,Carassius auratus,Misgurnus bipartitus,Paramisgurnus dabryanus,Opsariichthys bidens and Hemibarbus maculatus. Redundancy analysis examine results showed a positive correlation between the distance from the estuary and P. lagowskii,B. nuda,C. czerskii,L. costata,Lota lota,Salvelinus malma,Pungitius sinensis and Rhodeus sinensis. Conversely,H. leucisculus,A. macropterus,P. parva,Silurus asotus,A. rivularis,C. auratus,H. maculatus,Rhinogobius cliffordpopei and Misgurnus mohoity showed a negative correlation with the distance from the estuary.【Conclusion】 The succession of the fish community along the longitudinal gradient of the Hulan River exhibits a pattern of loss of cold-water fish and gain of widely distributed species,indicating a turnover pattern.

Key words: Hulan River, Fish, Longitudinal gradient pattern, Community structure, Turnover pattern

CLC Number: 

  • Q958.8