Coexisting invasive gobies reveal no evidence for temporal and trophic niche differentiation in the sublittoral habitat of Lake Erhai, China

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 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
刊名	ECOLOGY OF FRESHWATER FISH
	2017
卷号	26 期号:1 页码:42-52
关键词	gobies ecological niche diel activity feeding rhythm niche differentiation
通讯作者	jsliu@ihb.ac.cn
中文摘要	Niche 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.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/16208]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
推荐引用方式 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.,...&Cucherousset, J.(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.