干旱区生态环境知识资源中心(Arid): Desert pumpkinseed: diet composition and breadth in a Moroccan river

Arid

DOI	10.1051/kmae/2021033
	Desert pumpkinseed: diet composition and breadth in a Moroccan river
	Gkenas, Christos; Magalhaes, Maria Filomena; Campos-Martin, Nazaret; Ribeiro, Filipe; Clavero, Miguel
通讯作者	Gkenas, C (corresponding author), Univ Lisbon, Fac Ciencias, Ctr Ciencias Mar & Ambiente, MARE, Lisbon, Portugal.
来源期刊	KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS
ISSN	1961-9502
出版年	2021
期号	422
英文摘要	The widely invasive North American pumpkinseed sunfish, Lepomis gibbosus, is currently established in desert rivers in Morocco. The success of pumpkinseed in novel ecosystems has been associated with its generalist diet, but this trait remains unevaluated in arid regions. Desert rivers are harsh environments with limited water and prey availability which may adversely constrain the diet of fish. Here we studied the diet of pumpkinseed across 4 sites in the Draa River, embracing a 450 m elevational gradient covering from extremely dry lowlands to relatively humid highlands. We described pumpkinseed diet through the analysis of stomach contents of 82 individuals, collected in the fall of 2013. Pumpkinseed diet was dominated by Chironomidae in dry lowlands, while Ephemeroptera, Heteroptera, Trichoptera and Odonata were relevant prey in more humid highlands. Population diet breadth expanded with elevation, but individual specialization in diet was low among all sites. Our results highlight considerable changes in diet composition and breadth with aridity, suggesting that feeding plasticity and use of exclusive, locally abundant prey rather than generalized feeding may be associated with the success of pumpkinseed in most arid areas in desert rivers.
英文关键词	Invasive species Lepomis gibbosus aridity elevation feeding ecology
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000707431600001
WOS关键词	LEPOMIS-GIBBOSUS ; SUNFISH ; POPULATIONS ; STREAM ; FOOD
WOS类目	Fisheries ; Marine & Freshwater Biology
WOS研究方向	Fisheries ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364082
作者单位	[Gkenas, Christos; Campos-Martin, Nazaret; Ribeiro, Filipe] Univ Lisbon, Fac Ciencias, Ctr Ciencias Mar & Ambiente, MARE, Lisbon, Portugal; [Magalhaes, Maria Filomena] Univ Lisbon, Fac Ciencias, Ctr Ecol Evolucao & Alteracoes Ambientais, cE3c, Lisbon, Portugal; [Clavero, Miguel] CSIC, Estn Biol Donana, Dept Biol Conservac, Seville, Spain
推荐引用方式 GB/T 7714	Gkenas, Christos,Magalhaes, Maria Filomena,Campos-Martin, Nazaret,et al. Desert pumpkinseed: diet composition and breadth in a Moroccan river[J],2021(422).
APA	Gkenas, Christos,Magalhaes, Maria Filomena,Campos-Martin, Nazaret,Ribeiro, Filipe,&Clavero, Miguel.(2021).Desert pumpkinseed: diet composition and breadth in a Moroccan river.KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS(422).
MLA	Gkenas, Christos,et al."Desert pumpkinseed: diet composition and breadth in a Moroccan river".KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS .422(2021).