SCSIO OpenIR  > 中科院海洋生物资源可持续利用重点实验室
Coexisting invasive gobies reveal no evidence for temporal and trophic niche differentiation in the sublittoral habitat of Lake Erhai, China
Guo, ZQ; Liu, JS; Lek, S; Li, ZJ; Zhu, FY; Tang, JF; Britton, R; Cucherousset, J; jsliu@ihb.ac.cn
2017
Source PublicationECOLOGY OF FRESHWATER FISH
Volume26Issue:1Pages:42-52
AbstractNiche differentiation facilitates the coexistence of species within a community through avoidance of competition via mechanisms involving spatial, temporal and/or trophic dimensions. Where invasive species coexist in their non-native range, niche differentiation could allow their persistence at higher levels of abundance. Here, we tested whether there was temporal and/or trophic niche differentiation between two congeneric invasive goby species (Rhinogobius cliffordpopei and Rhinogobius giurinus) in the sublittoral habitat of Lake Erhai (south-west China) through quantifying their diel and seasonal rhythm of locomotion activities, feeding activities and diet composition. Both species displayed two similar diel peaks in activity and two main feeding periods (6:00-10:00 and 18:00-22:00), with rhythms of locomotion and feeding activity not differing significantly between the species in each season. Their diets had a high degree of overlap, being primarily composed of macrozooplankton, aquatic insects and shrimp larvae, with no diel changes across the seasons. Thus, in this habitat, there was no clear temporal or trophic niche differentiation between the invasive congeners, indicating their coexistence with high temporal and trophic overlap. In conjunction with data from the littoral and profundal habitats, the gobies revealed different strategies across the habitats (e.g. spatial segregation, trophic niche differentiation) that minimised their competitive interactions and promoted their coexistence. This suggests that the interactions of invasive fishes during the integration into native communities can be context dependent, varying according to factors including habitat and the availability of food resources.
Department[Guo, Zhiqiang; Liu, Jiashou; Lek, Sovan; Li, Zhongjie; Zhu, Fengyue; Tang, Jianfeng] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Guo, Zhiqiang; Lek, Sovan; Cucherousset, Julien] Univ Toulouse III Paul Sabatier, CNRS, EDB UMR5174, ENFA,Lab Evolut & Diversite Biol, Toulouse, France; [Guo, Zhiqiang] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Guangdong, Peoples R China; [Guo, Zhiqiang; Britton, Robert] Bournemouth Univ, Fac Sci & Technol, Dept Life & Environm Sci, Ctr Conservat Ecol & Environm Change, Bournemouth, Dorset, England
KeywordGobies Ecological Niche Diel Activity Feeding Rhythm Niche Differentiation
Funding ProjectLMB
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/16208
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding Authorjsliu@ihb.ac.cn
Recommended Citation
GB/T 7714
Guo, ZQ,Liu, JS,Lek, S,et al. Coexisting invasive gobies reveal no evidence for temporal and trophic niche differentiation in the sublittoral habitat of Lake Erhai, China[J]. ECOLOGY OF FRESHWATER FISH,2017,26(1):42-52.
APA Guo, ZQ.,Liu, JS.,Lek, S.,Li, ZJ.,Zhu, FY.,...&jsliu@ihb.ac.cn.(2017).Coexisting invasive gobies reveal no evidence for temporal and trophic niche differentiation in the sublittoral habitat of Lake Erhai, China.ECOLOGY OF FRESHWATER FISH,26(1),42-52.
MLA Guo, ZQ,et al."Coexisting invasive gobies reveal no evidence for temporal and trophic niche differentiation in the sublittoral habitat of Lake Erhai, China".ECOLOGY OF FRESHWATER FISH 26.1(2017):42-52.
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