Knowledge Resource Center for Ecological Environment in Arid Area
Facilitation between bovids and equids on an African savanna | |
Odadi, Wilfred O.1,2,3; Jain, Meha2,4; Van Wieren, Sipke E.5; Prins, Herbert H. T.5; Rubenstein, Daniel I.1,2 | |
通讯作者 | Odadi, Wilfred O. |
来源期刊 | EVOLUTIONARY ECOLOGY RESEARCH
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ISSN | 1522-0613 |
出版年 | 2011 |
卷号 | 13期号:3页码:237-252 |
英文摘要 | Background: Equids, especially zebras and donkeys, and cattle (bovids) share habitats in many savanna ecosystems in Africa. The issue of competition for food between these ungulate guilds remains largely unresolved. Resolving it will provide insights into how wild zebra are likely to interact with cattle on shared landscapes and suggest best practices for cattle owners who must decide whether to tolerate wild ungulates, some of which are severely threatened (e.g. Grevy’s zebra, Equus grevyi). Aim: Determine whether an equid and a bovid compete in a semi-arid savanna in Kenya. Organisms: Boran cattle (Bos indict’s) and donkeys (Equus africanus asinus) the latter as surrogates for zebras. Methodology: Experiments to measure performance (weight gains), bite rates, diet quality (digestible organic matter and crude protein), and gastrointestinal worm burdens (parasite egg count per unit weight of faeces) of the two ungulate species when herded separately (single species) or together (mixed species). We used two stocking levels: low-density (one animal per 7 ha), a level typical of commercial ranchers: and high-density (one animal per 2 ha), a level typical of pastoral herders. Principal findings: When herded together, both species gained more weight, had higher bite rates (especially at low stocking density), and selected diets with a more favourable balance between digestible organic matter and crude protein, than when herded separately. In addition, parasite egg output in faeces of donkeys was reduced by 14-35% following shared foraging with cattle. Conclusion: Cattle (a ruminant) and donkeys (hindgut fermenters, closely related to zebras) showed no evidence of competion with each other. Rather, our results show a facilitative, rather than a competitive, interaction between them. |
英文关键词 | bite rate bovids cattle competition crude protein digestible organic matter donkeys equids facilitation gastrointestinal parasites grazing strategies grazing succession mutualism weight gain zebras |
类型 | Article |
语种 | 英语 |
国家 | Kenya ; USA ; Netherlands |
收录类别 | SCI-E |
WOS记录号 | WOS:000296399000002 |
WOS关键词 | TRADITIONAL PASTORALISM ; NATIONAL-PARK ; COMPETITION ; CONSERVATION ; INFECTIONS ; SERENGETI ; RUMINANTS ; NUTRITION ; DYNAMICS ; RAINFALL |
WOS类目 | Ecology ; Evolutionary Biology ; Genetics & Heredity |
WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168079 |
作者单位 | 1.Mpala Res Ctr, Nanyuki, Kenya; 2.Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA; 3.African Wildlife Fdn, Nairobi, Kenya; 4.Columbia Univ, Dept Ecol Evolut & Environm Biol, New York, NY USA; 5.Wageningen Univ, Resource Ecol Grp, Wageningen, Netherlands |
推荐引用方式 GB/T 7714 | Odadi, Wilfred O.,Jain, Meha,Van Wieren, Sipke E.,et al. Facilitation between bovids and equids on an African savanna[J],2011,13(3):237-252. |
APA | Odadi, Wilfred O.,Jain, Meha,Van Wieren, Sipke E.,Prins, Herbert H. T.,&Rubenstein, Daniel I..(2011).Facilitation between bovids and equids on an African savanna.EVOLUTIONARY ECOLOGY RESEARCH,13(3),237-252. |
MLA | Odadi, Wilfred O.,et al."Facilitation between bovids and equids on an African savanna".EVOLUTIONARY ECOLOGY RESEARCH 13.3(2011):237-252. |
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