干旱区生态环境知识资源中心(Arid): Differences in dietary composition and preference maintained despite gene flow across a woodrat hybrid zone

Arid

DOI	10.1002/ece3.7399
	Differences in dietary composition and preference maintained despite gene flow across a woodrat hybrid zone
	Nielsen, Danny P.; Matocq, Marjorie D.
通讯作者	Nielsen, DP (corresponding author), Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA. ; Nielsen, DP (corresponding author), Univ Nevada, Grad Program EECB, Reno, NV 89557 USA.
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2021
卷号	11 期号:9 页码:4909-4919
英文摘要	Ecotones, characterized by adjacent yet distinct biotic communities, provide natural laboratories in which to investigate how environmental selection influences the ecology and evolution of organisms. For wild herbivores, differential plant availability across sharp ecotones may be an important source of dietary-based selection. We studied small herbivore diet composition across a sharp ecotone where two species of woodrat, Neotoma bryanti and N. lepida, come into secondary contact with one another and hybridize. We quantified woodrat dietary preference through trnL metabarcoding of field-collected fecal pellets and experimental choice trials. Despite gene flow, parental N. bryanti and N. lepida maintain distinct diets across this fine spatial scale, and across temporal scales that span both wet and dry conditions. Neotoma bryanti maintained a more diverse diet, with Frangula californica (California coffeeberry) making up a large portion of its diet. Neotoma lepida maintains a less diverse diet, with Prunus fasciculata (desert almond) comprising more than half of its diet. Both F. californica and P. fasciculata are known to produce potentially toxic plant secondary compounds (PSCs), which should deter herbivory, yet these plants have relatively high nutritional value as measured by crude protein content. Neotoma bryanti and N. lepida consumed F. californica and P. fasciculata, respectively, in greater abundance than these plants are available on the landscape-indicating dietary selection. Finally, experimental preference trials revealed that N. bryanti exhibited a preference for F. californica, while N. lepida exhibited a relatively stronger preference for P. fasciculata. We find that N. bryanti exhibit a generalist herbivore strategy relative to N. lepida, which exhibit a more specialized feeding strategy in this study system. Our results suggest that woodrats respond to fine-scale environmental differences in plant availability that may require different metabolic strategies in order to balance nutrient acquisition while minimizing exposure to potentially toxic PSCs.
英文关键词	adaptation detoxification herbivore hybridization Neotoma toxin tolerance woodrat
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000629812800001
WOS关键词	PLANT SECONDARY METABOLITES ; REPRODUCTIVE ISOLATION ; PHENOTYPIC PLASTICITY ; MAMMALIAN HERBIVORES ; PEA APHIDS ; NEOTOMA ; SPECIALIST ; SELECTION ; TRIDENTATA ; STRATEGIES
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350038
作者单位	[Nielsen, Danny P.; Matocq, Marjorie D.] Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA; [Nielsen, Danny P.; Matocq, Marjorie D.] Univ Nevada, Grad Program EECB, Reno, NV 89557 USA
推荐引用方式 GB/T 7714	Nielsen, Danny P.,Matocq, Marjorie D.. Differences in dietary composition and preference maintained despite gene flow across a woodrat hybrid zone[J],2021,11(9):4909-4919.
APA	Nielsen, Danny P.,&Matocq, Marjorie D..(2021).Differences in dietary composition and preference maintained despite gene flow across a woodrat hybrid zone.ECOLOGY AND EVOLUTION,11(9),4909-4919.
MLA	Nielsen, Danny P.,et al."Differences in dietary composition and preference maintained despite gene flow across a woodrat hybrid zone".ECOLOGY AND EVOLUTION 11.9(2021):4909-4919.