Imperial College London
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Dr Chris Hadjichrysanthou

Faculty of Medicine, School of Public Health

Visiting Researcher
 
 
 
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Contact

 

c.hadjichrysanthou Website

 
 
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Location

 

LG36Medical SchoolSt Mary's Campus

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Summary

 

Publications

Citation

BibTex format

@article{Hadjichrysanthou:2017:10.1007/s00285-017-1177-7,
author = {Hadjichrysanthou, C and Broom, M and Rychtá, J},
doi = {10.1007/s00285-017-1177-7},
journal = {Journal of Mathematical Biology},
pages = {1465--1488},
title = {Models of kleptoparasitism on networks: the effect of population structure on food stealing behaviour},
url = {http://dx.doi.org/10.1007/s00285-017-1177-7},
volume = {76},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The behaviour of populations consisting of animals that interact with each other for their survival and reproduction is usually investigated assuming homogeneity amongst the animals. However, real populations are non-homogeneous. We focus on an established model of kleptoparasitism and investigate whether and how much population heterogeneities can affect the behaviour of kleptoparasitic populations. We consider a situation where animals can either discover food items by themselves or attempt to steal the food already discovered by other animals through aggressive interactions. Representing the likely interactions between animals by a network, we develop pairwise and individual-based models to describe heterogeneities in both the population structure and other individual characteristics, including searching and fighting abilities. For each of the models developed we derive analytic solutions at the steady state. The high accuracy of the solutions is shown in various examples of populations with different degrees of heterogeneity. We observe that highly heterogeneous structures can significantly affect the food intake rate and therefore the fitness of animals. In particular, the more highly connected animals engage in more conflicts, and have a reduced food consumption rate compared to poorly connected animals. Further, for equivalent average level of connectedness, the average consumption rate of a population with heterogeneous structure can be higher.
AU  - Hadjichrysanthou,C
AU  - Broom,M
AU  - Rychtá,J
DO  - 10.1007/s00285-017-1177-7
EP  - 1488
PY  - 2017///
SN  - 0303-6812
SP  - 1465
TI  - Models of kleptoparasitism on networks: the effect of population structure on food stealing behaviour
T2  - Journal of Mathematical Biology
UR  - http://dx.doi.org/10.1007/s00285-017-1177-7
UR  - http://hdl.handle.net/10044/1/58081
VL  - 76
ER  -
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