Document Detail


Remarks on antipredator behavior and food chain dynamics.
MedLine Citation:
PMID:  15560907     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
When consumers feeding on a resource spend time in avoiding high risks of predation, the predator functional response declines with predator density. While this is well established, less attention has been paid to the dependence of the consumer functional response on predator density. Here we show how the separation of behavioral and ecological timescales allows one to determine both responses starting from an explicit behavioral model. Within the general set-up considered in this paper, the two functional responses can tend toward Holling type II responses when consumers react only weakly to predation. Thus, the main characteristics of the standard Rosenzweig-MacArthur tritrophic food chain (logistic resource and Holling type II consumer and predator) remain valid also when consumers have weak antipredator behavior. Moreover, through numerical analysis, we show that in a particular but interesting case pronounced antipredator behaviors stabilize the system.
Authors:
Sergio Rinaldi; Alessandra Gragnani; Silvia De Monte
Related Documents :
20015237 - Influence of the indirect effects of guppies on life-history evolution in rivulus hartii.
18959307 - Festering food: chytridiomycete pathogen reduces quality of daphnia host as a food reso...
15051417 - Allee-like effects in metapopulation dynamics.
20880557 - Contrasting time trends of organic contaminants in antarctic pelagic and benthic food w...
22980017 - Prevalence of salmonella and vibrio spp. in seafood products sold in singapore.
25444627 - Polycyclic aromatic hydrocarbons in fish from st helena, south atlantic, in relation to...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Theoretical population biology     Volume:  66     ISSN:  0040-5809     ISO Abbreviation:  Theor Popul Biol     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2004-11-24     Completed Date:  2005-03-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0256422     Medline TA:  Theor Popul Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  277-86     Citation Subset:  IM    
Affiliation:
CIRITA, c/o Department of Electronics and Information, Politecnico di Milano, Via Ponzio 34/5, 20133 Milano, Italy. rinaldi@elet.polimi.it
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Food Chain*
Models, Theoretical
Nonlinear Dynamics
Predatory Behavior*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Chemical incidents: are we ready in the West Midlands? Testing the communication arrangements of on-...
Next Document:  Kin selection and coefficients of relatedness in family-structured populations with inbreeding.