The physiological costs of prey switching reinforce foraging specialization
نویسندگان
چکیده
منابع مشابه
Foraging mode switching: the importance of prey distribution and foraging currency
http://dx.doi.org/10.1016/j.anbehav.2015.04.014 0003-3472/© 2015 The Authors. Published on behalf license (http://creativecommons.org/licenses/by/4.0/) Foraging methods are highly variable, but can be grouped into two modes: searching and ambush. While research has focused on the functioning of each mode, the question of how animals choose which to use has been largely neglected. Here we consid...
متن کاملFeedbacks between protistan single-cell activity and bacterial physiological structure reinforce the predator/prey link in microbial foodwebs
The trophic interactions between bacteria and their main predators, the heterotrophic nanoflagellates (HNFs), play a key role in the structuring and functioning of aquatic microbial food webs. Grazing regulation of bacterial communities, both of biomass and community structure, have been frequently reported. Additionally, bottom-up responses of the HNF at the population level (numerical respons...
متن کاملEarly Paleoindian foraging: examining the faunal evidence for large mammal specialization and regional variability in prey choice
North American archaeologists have spent much effort debating whether Early Paleoindian foragers were specialized hunters of megafauna or whether they pursued more generalized subsistence strategies. In doing so, many have treated the foraging practices of early North Americans as if they must have been uniform across the continent, even though others have pointed out that adaptations appear to...
متن کاملThe value of switching costs
We study a dynamic model with an incumbent monopolist and entry in every subsequent period. We first show that if all consumers have the same switching cost, then the intertemporal profits of the incumbent are the same as if there was only one period. We then study the consequences of heterogeneity of switching costs. We prove that even low switching cost customers have value for the incumbent:...
متن کاملOptimal foraging and predator-prey dynamics III.
In the previous two articles (Theor. Popul. Biol. 49 (1996) 265-290; 55 (1999) 111-126), the population dynamics resulting from a two-prey-one-predator system with adaptive predators was studied. In these articles, predators followed the predictions of optimal foraging theory. Analysis of that system was hindered by the incorporation of the logistic description of prey growth. In particular, be...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2017
ISSN: 0021-8790,1365-2656
DOI: 10.1111/1365-2656.12632