Arid
DOI10.1111/j.1365-2435.2006.01190.x
Flea infestation and energy requirements of rodent hosts: are there general rules?
Hawlena, H.; Krasnov, B. R.; Abramsky, Z.; Khokhlova, I. S.; Saltz, D.; Kam, M.; Tamir, A.; Degen, A. A.
通讯作者Hawlena, H.
来源期刊FUNCTIONAL ECOLOGY
ISSN0269-8463
EISSN1365-2435
出版年2006
卷号20期号:6页码:1028-1036
英文摘要

1. Two immunological tactics, a constitutive response that is always present, and an induced response that is only employed after an invader has been recognized, have evolved in animals as a defence against parasites.


2. The energy requirements, body mass change and blood parameters of flea-parasitized and nonparasitized gerbils (Gerbillus andersoni) were measured and compared with published data for a close relative (Gerbillus dasyurus). G andersoni possesses a constitutive immune response that could require additional maintenance costs, whereas G dasyurus develops an immune response only after being attacked by fleas. We therefore predicted that G andersoni has higher energy requirements than G dasyurus when both species are parasite-free. However, we also predicted that the immunological ’readiness’ of G andersoni makes it less susceptible to flea infestation than G dasyurus.


3. Energy requirements for maintenance were estimated by offering different levels of metabolizable energy to parasitized and nonparasitized animals and measuring changes in their body mass. At the end of the experiment, blood samples were taken from all rodents and haematological and biochemical analyses were done.


4. Adjusted energy requirements per unit body mass of nonparasitized G andersoni were higher than those reported for G dasyvurus. Also, there was no difference between energy requirements, body mass change and blood parameters of parasitized and nonparasitized G andersoni in contrast to the pronounced differences found for parasitized and nonparasitized G dasyurus. However, parasitized G andersoni did not have lower energy requirements than parasitized G dasyurus as predicted from the second prediction.


5. The results illustrate the energy costs and benefits related to each immunological strategy and suggest that parasites can cause other nonenergetic costs to their hosts. The two strategies are most likely a reflection of interspecific differences in probability of flea attacks.


英文关键词average daily metabolic rate blood parameters body mass change differential susceptibility to parasites immune responses
类型Article
语种英语
国家Israel
收录类别SCI-E
WOS记录号WOS:000242897000013
WOS关键词EVOLUTIONARY ECOLOGY ; IMMUNE-RESPONSES ; SNOWSHOE HARES ; NEGEV DESERT ; HOUSE MARTIN ; TRADE-OFFS ; PARASITES ; SURVIVAL ; COST ; RESISTANCE
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/151445
作者单位(1)Ben Gurion Univ Negev, Dept Life Sci, IL-84105 Beer Sheva, Israel;(2)Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Mitrani Dept Desert Ecol, IL-84490 Midreshet Ben Gurion, Israel;(3)Ramon Sci Ctr, IL-8060 Mizpe Ramon, Israel;(4)Ben Gurion Univ Negev, Wyler Dept Dryland Agr, Jacob Blaustein Inst Desert Res, IL-84105 Beer Sheva, Israel;(5)InSight Biopharmaceut, IL-76121 Rehovot, Israel
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GB/T 7714
Hawlena, H.,Krasnov, B. R.,Abramsky, Z.,et al. Flea infestation and energy requirements of rodent hosts: are there general rules?[J]. Ben-Gurion University of the Negev,2006,20(6):1028-1036.
APA Hawlena, H..,Krasnov, B. R..,Abramsky, Z..,Khokhlova, I. S..,Saltz, D..,...&Degen, A. A..(2006).Flea infestation and energy requirements of rodent hosts: are there general rules?.FUNCTIONAL ECOLOGY,20(6),1028-1036.
MLA Hawlena, H.,et al."Flea infestation and energy requirements of rodent hosts: are there general rules?".FUNCTIONAL ECOLOGY 20.6(2006):1028-1036.
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