Fish Assemblage Shift after Japanese Smelt (Hypomesus nipponensis McAllister, 1963) Invasion in Lake Erhai, a Subtropical Plateau Lake in China
| Autor: | Longgen Guo, Leyi Ni, Yushun Chen, Chengjie Yin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Geography Planning and Development Population Zoology population Aquatic Science 01 natural sciences Biochemistry invasive fish education TD201-500 Water Science and Technology education.field_of_study biology Water supply for domestic and industrial purposes 010604 marine biology & hydrobiology Sharpbelly Hypomesus nipponensis Hemiculter 04 agricultural and veterinary sciences Hydraulic engineering Catch per unit effort biology.organism_classification Japanese smelt Pseudorasbora parva 040102 fisheries Crucian carp CPUE 0401 agriculture forestry and fisheries Smelt TC1-978 fish community |
| Zdroj: | Water, Vol 13, Iss 1800, p 1800 (2021) Water Volume 13 Issue 13 |
| ISSN: | 2073-4441 |
| Popis: | The introduction of non-native fish species is known to have adverse effects on aquatic ecosystems, but their effect on plateau lakes is not well studied. In this study, we examined the effect of the Japanese smelt (Hypomesus nipponensis) invasion on the fish assemblage in Lake Erhai, a subtropical plateau lake in southwestern China. Through cluster analysis and non-metric multidimensional scaling (NMDS), we found a significant fish assemblage shift: the population of sharpbelly (Hemiculter leucisculus) fell by 67% in catch per unit effort (CPUE) from 2.262 to 0.741 topmouth gudgeon (Pseudorasbora parva) fell by 52% from 0.61 to 0.29 and icefish (Neosalanx taihuensis) plummeted by 88% from 0.736 to 0.088. Meanwhile, the numbers for crucian carp (Carassius auratus) improved by almost 185% from 1.82 to 3.36. A Pearson correlation analysis showed that these four species significantly correlated with the invasion of the Japanese smelt: sharpbelly (−0.71), topmouth gudgeon (−0.71), icefish (−0.62), and crucian carp (0.81). This study documented the expansion of invasive fish and their effects on native species over time, thus providing a case study of invasive fish as well as a theoretical basis for further research into interspecies interactions. |
| Databáze: | OpenAIRE |
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