Trophic resource partitioning by sympatric ecomorphs of Schizopygopsis (Cyprinidae) in a young Pamir Mountain lake: preliminary results
| Autor: | Boris A. Levin, Aleksandra S. Komarova, Oksana L. Rozanova |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
biology δ13C Zoology 04 agricultural and veterinary sciences δ15N Schizopygopsis biology.organism_classification 010603 evolutionary biology 01 natural sciences Sympatric speciation 040102 fisheries Cyprinidae 0401 agriculture forestry and fisheries Predator Ecology Evolution Behavior and Systematics Sea level Trophic level |
| Zdroj: | Ichthyological Research. 68:191-197 |
| ISSN: | 1616-3915 1341-8998 |
| Popis: | Four sympatric ecomorphs – detritivorous, predator, benthivorous, and phytophagous – of the cyprinid fish Schizopygopsis stolickai were recorded in a young Pamir lake, Lake Yashilkul, located at > 3,700 m above sea level. Some ecomorphs are divergent in diet, gut length, and stable isotopes of δ13C and δ15N. The predator ecomorph has a shorter gut, and is the most enriched in δ15N (14.5‰), indicating its occupation of the highest trophic level. The lowest δ15N values (11.1‰) were detected in the detritivorous ecomorph. There was significant overlap in the diet of some individuals belonging to different ecomorphs, reflecting high trophic plasticity despite ongoing trophic specialization. |
| Databáze: | OpenAIRE |
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