Trophic niche and interspecific diet relationship of Gymnocypris in autumn from Langcuo Lake of Tibet, China.
Langcuo Lake is a typical plateau lake in the southern Tibet, with an altitude of 4300 m. Gymnocypris chui and Gymnocypris scleracanthus coexisted in this lake. In this study, we investigated the food composition and trophic niche of two Gymnocypris fishes in autumn by carbon and nitrogen stable isotopes technique in 2018. We further analyzed their interspecific diet relationship, including the diet similarity index and overlap coefficient. The results showed that G. chui mainly feed on ephemeroptera larvae, chironomidae larvae, periphytic algae, gammarus and plankton, while G. scleracanthus mainly feed on ephemeroptera larvae, periphytic algae, chironomidae larvae, gammarus and aquatic vascular plants. Two Gymnocypris fishes had trophic niche overlap. The δ13C range value (CR=1.60), δ15N range value (NR=1.89), and total area of convex hull (TA=1.80) of G. chui were lower than those of G. scleracanthus, with the difference values being 0.09, 0.57 and 1.29, respectively. The diet similarity index and overlap coefficient of those two species were higher, with a value of 94.2% and 91.5%, respectively. Our results suggested that the interspecific diet competition may be intense between the G. chui and G. scleracanthus in Langcuo Lake in autumn.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:31 |
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| Enthalten in: |
Ying yong sheng tai xue bao = The journal of applied ecology - 31(2020), 12 vom: 06. Dez., Seite 4284-4290 |
| Sprache: |
Chinesisch |
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| Weiterer Titel: |
西藏朗错秋季裸鲤属营养生态位及种间食物关系 |
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| Beteiligte Personen: |
Li, Lei [VerfasserIn] |
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| Links: |
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| Themen: |
Carbon Isotopes |
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| Anmerkungen: |
Date Completed 05.01.2021 Date Revised 05.01.2021 published: Print Citation Status MEDLINE |
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| doi: |
10.13287/j.1001-9332.202012.034 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM319572617 |
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| 245 | 1 | 0 | |a Trophic niche and interspecific diet relationship of Gymnocypris in autumn from Langcuo Lake of Tibet, China. |
| 246 | 3 | 3 | |a 西藏朗错秋季裸鲤属营养生态位及种间食物关系 |
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| 520 | |a Langcuo Lake is a typical plateau lake in the southern Tibet, with an altitude of 4300 m. Gymnocypris chui and Gymnocypris scleracanthus coexisted in this lake. In this study, we investigated the food composition and trophic niche of two Gymnocypris fishes in autumn by carbon and nitrogen stable isotopes technique in 2018. We further analyzed their interspecific diet relationship, including the diet similarity index and overlap coefficient. The results showed that G. chui mainly feed on ephemeroptera larvae, chironomidae larvae, periphytic algae, gammarus and plankton, while G. scleracanthus mainly feed on ephemeroptera larvae, periphytic algae, chironomidae larvae, gammarus and aquatic vascular plants. Two Gymnocypris fishes had trophic niche overlap. The δ13C range value (CR=1.60), δ15N range value (NR=1.89), and total area of convex hull (TA=1.80) of G. chui were lower than those of G. scleracanthus, with the difference values being 0.09, 0.57 and 1.29, respectively. The diet similarity index and overlap coefficient of those two species were higher, with a value of 94.2% and 91.5%, respectively. Our results suggested that the interspecific diet competition may be intense between the G. chui and G. scleracanthus in Langcuo Lake in autumn | ||
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| 650 | 4 | |a Gymnocypris scleracanthus | |
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| 700 | 1 | |a Tang, Shi-Zhan |e verfasserin |4 aut | |
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