Predation risk, host immune response, and parasitism
نویسندگان
چکیده
منابع مشابه
Predation risk, host immune response, and parasitism
Predation risk may affect the allocation priorities of limiting resources by potential prey. Investment in immune function should receive reduced priority, when hosts are exposed to predators because of the costs of immune function. We tested this hypothesis by randomly exposing adult house sparrows, Passer domesticus, to either a cat, Felis catus, or a rabbit, Oryctolagus cuniculus, for 6 h wh...
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Host-parasite interactions have been hypothesized to affect the evolution of dispersal by providing a possibility for hosts to escape debilitating parasites, and by influencing the level of local adaptation. We used a comparative approach to investigate the relationship between a component of host immune function (which reflects the evolutionary history of parasite-induced natural selection) an...
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Natural enemies such as predators and parasites are known to shape intraspecific variability of behaviour and personality in natural populations, yet several key questions remain: (i) What is the relative importance of predation vs. parasitism in shaping intraspecific variation of behaviour across generations? (ii) What are the contributions of genetic and plastic effects to this behavioural di...
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در این پژوهش، اثرات برهم‌کنش بین زنبور پارازیتوئید Cotesia plutellae (Kurdjumov) و باکتریBacillus thuringiensis Berliner بر روی پارازیتیسم و یک مجری سیستم ایمنی (فعالیت آنزیم فنول اکسیداز) جمعیت‌های بید کلم، Plutella xylostella (Linnaeus)، حساس و مقاوم به Btدر آزمایشگاه بررسی گردید. موفقیت پارازیتیسم، بسته به کاربرد Bt یا توکسین آن (Cry1Ac) و همچنین زمان کاربرد آن‌ها، متغیر بود. در جمعیت حساس، ...
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Predators have documented post-encounter (density-mediated) effects on prey but their pre-encounter impacts, including behavioural alterations, can be substantial as well. While it is increasingly evident that this "ecology of fear" is important to understand for natural enemy-victim relationships, fear responses of hosts to the threat of infection by a parasite are relatively unknown. We exami...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2004
ISSN: 1465-7279
DOI: 10.1093/beheco/arh054