Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River
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 t...
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ftchinacadsciihb:oai:ir.ihb.ac.cn:342005/33227 2023-05-15T18:09:56+02:00 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 http://ir.ihb.ac.cn/handle/342005/33227 https://doi.org/10.1002/ece3.5293 英语 eng WILEY ECOLOGY AND EVOLUTION http://ir.ihb.ac.cn/handle/342005/33227 doi:10.1002/ece3.5293 feeding habit Gobioninae resource partitioning the upper Yangtze River Environmental Sciences & Ecology Evolutionary Biology Ecology SCULPIN COTTUS-POECILOPUS SALMO-SALAR L NICHE OVERLAP LAKE MALAWI FISHES COEXISTENCE DIET HECKEL 期刊论文 2019 ftchinacadsciihb https://doi.org/10.1002/ece3.5293 2019-10-18T00:04:21Z 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. Report Salmo salar Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR Ecology and Evolution 9 12 7227 7236 |
institution |
Open Polar |
collection |
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR |
op_collection_id |
ftchinacadsciihb |
language |
English |
topic |
feeding habit Gobioninae resource partitioning the upper Yangtze River Environmental Sciences & Ecology Evolutionary Biology Ecology SCULPIN COTTUS-POECILOPUS SALMO-SALAR L NICHE OVERLAP LAKE MALAWI FISHES COEXISTENCE DIET HECKEL |
spellingShingle |
feeding habit Gobioninae resource partitioning the upper Yangtze River Environmental Sciences & Ecology Evolutionary Biology Ecology SCULPIN COTTUS-POECILOPUS SALMO-SALAR L NICHE OVERLAP LAKE MALAWI FISHES COEXISTENCE DIET HECKEL Liu, Fei Wang, Jianwei Liu, Huanzhang Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River |
topic_facet |
feeding habit Gobioninae resource partitioning the upper Yangtze River Environmental Sciences & Ecology Evolutionary Biology Ecology SCULPIN COTTUS-POECILOPUS SALMO-SALAR L NICHE OVERLAP LAKE MALAWI FISHES COEXISTENCE DIET HECKEL |
description |
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. |
format |
Report |
author |
Liu, Fei Wang, Jianwei Liu, Huanzhang |
author_facet |
Liu, Fei Wang, Jianwei Liu, Huanzhang |
author_sort |
Liu, Fei |
title |
Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River |
title_short |
Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River |
title_full |
Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River |
title_fullStr |
Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River |
title_full_unstemmed |
Seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper Yangtze River |
title_sort |
seasonal variations in food resource partitioning among four sympatric gudgeon species in the upper yangtze river |
publisher |
WILEY |
publishDate |
2019 |
url |
http://ir.ihb.ac.cn/handle/342005/33227 https://doi.org/10.1002/ece3.5293 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
ECOLOGY AND EVOLUTION http://ir.ihb.ac.cn/handle/342005/33227 doi:10.1002/ece3.5293 |
op_doi |
https://doi.org/10.1002/ece3.5293 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
12 |
container_start_page |
7227 |
op_container_end_page |
7236 |
_version_ |
1766182638260846592 |