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Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River.
Liu, Fei; Wang, Jianwei; Liu, Huanzhang
2019-06-01
Source PublicationEcology and Evolution
ISSN2045-7758
Volume9Issue:12Pages:7227-7236
Abstract

Knowledge of food resource partitioning among sympatric fish species is crucial for understanding the potential mechanisms of species coexistence. Gudgeons (Teleostei: Cyprinidae: Gobioninae) often dominate fish assemblages in the upper Yangtze River. However, little research has been conducted on their trophic interactions. In this paper, seasonal diet and feeding strategy variations of four sympatric gudgeon species, Coreius guichenoti, Coreius heterodon, Rhinogobio ventralis, and Rhinogobio cylindricus, were investigated by analysis of intestinal tract contents, aiming to explore whether food resource partitioning occurred among them. Fish specimens were collected during spring (April-May) and autumn (August-October) in 2010 in Hejiang, a free-flowing stretch of the upper Yangtze River. Coreius guichenoti, C. heterodon, and R. cylindricus showed omnivorous feeding habits, while R. ventralis exhibited an obligate carnivore feeding habit. Diet overlap among the four studied species was high, especially in spring. However, changes in feeding strategies were observed in autumn. Specifically, C. guichenoti and R. cylindricus expanded their dietary niche breadth and consumed detritus, Sinopotamidae or Hydropsychidae as important complementary food resources. In contrast, C. heterodon and R. ventralis reduced their dietary niche breadth and became more specialized on mussels (Limnoperna lacustris). These results confirmed that sympatric fish species can coexist with high diet overlap, and food resource partitioning among these species may also fluctuate with the seasons.

Indexed BySCI
Language英语
WOS Research AreaAnatomy & Morphology ; Zoology ; Nutrition & Dietetics ; Environmental Sciences & Ecology
WOS SubjectANATOMY MORPHOLOGY ; ZOOLOGY ; NUTRITION DIETETICS ; ECOLOGY ; ENVIRONMENTAL SCIENCES
WOS IDWOS:ZOOR15512083209
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35428
Collection水生生物多样性与资源保护研究中心_期刊论文
AffiliationChinese Acad Sci, Inst Hydrobiol, 7 Donghu South Rd, Wuhan, Hubei, 430072, China
Recommended Citation
GB/T 7714
Liu, Fei,Wang, Jianwei,Liu, Huanzhang. Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River.[J]. Ecology and Evolution,2019,9(12):7227-7236.
APA Liu, Fei,Wang, Jianwei,&Liu, Huanzhang.(2019).Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River..Ecology and Evolution,9(12),7227-7236.
MLA Liu, Fei,et al."Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River.".Ecology and Evolution 9.12(2019):7227-7236.
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