Host centrality in food web networks determines parasite diversity.

<h4>Background</h4>Parasites significantly alter topological metrics describing food web structure, yet few studies have explored the relationship between food web topology and parasite diversity.<h4>Methods/principal findings</h4>This study uses quantitative metrics describi...

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Autores principales:	Tavis K Anderson, Michael V K Sukhdeo
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/39187b521d6d4aafb4708dcd84609a84
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spelling	oai:doaj.org-article:39187b521d6d4aafb4708dcd84609a842021-11-18T07:35:47ZHost centrality in food web networks determines parasite diversity.1932-620310.1371/journal.pone.0026798https://doaj.org/article/39187b521d6d4aafb4708dcd84609a842011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22046360/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Parasites significantly alter topological metrics describing food web structure, yet few studies have explored the relationship between food web topology and parasite diversity.<h4>Methods/principal findings</h4>This study uses quantitative metrics describing network structure to investigate the relationship between the topology of the host food web and parasite diversity. Food webs were constructed for four restored brackish marshes that vary in species diversity, time post restoration and levels of parasitism. Our results show that the topology of the food web in each brackish marsh is highly nested, with clusters of generalists forming a distinct modular structure. The most consistent predictors of parasite diversity within a host were: trophic generality, and eigenvector centrality. These metrics indicate that parasites preferentially colonise host species that are highly connected, and within modules of tightly interacting species in the food web network.<h4>Conclusions/significance</h4>These results suggest that highly connected free-living species within the food web may represent stable trophic relationships that allow for the persistence of complex parasite life cycles. Our data demonstrate that the structure of host food webs can have a significant effect on the establishment of parasites, and on the potential for evolution of complex parasite life cycles.Tavis K AndersonMichael V K SukhdeoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 10, p e26798 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tavis K Anderson Michael V K Sukhdeo Host centrality in food web networks determines parasite diversity.
description	<h4>Background</h4>Parasites significantly alter topological metrics describing food web structure, yet few studies have explored the relationship between food web topology and parasite diversity.<h4>Methods/principal findings</h4>This study uses quantitative metrics describing network structure to investigate the relationship between the topology of the host food web and parasite diversity. Food webs were constructed for four restored brackish marshes that vary in species diversity, time post restoration and levels of parasitism. Our results show that the topology of the food web in each brackish marsh is highly nested, with clusters of generalists forming a distinct modular structure. The most consistent predictors of parasite diversity within a host were: trophic generality, and eigenvector centrality. These metrics indicate that parasites preferentially colonise host species that are highly connected, and within modules of tightly interacting species in the food web network.<h4>Conclusions/significance</h4>These results suggest that highly connected free-living species within the food web may represent stable trophic relationships that allow for the persistence of complex parasite life cycles. Our data demonstrate that the structure of host food webs can have a significant effect on the establishment of parasites, and on the potential for evolution of complex parasite life cycles.
format	article
author	Tavis K Anderson Michael V K Sukhdeo
author_facet	Tavis K Anderson Michael V K Sukhdeo
author_sort	Tavis K Anderson
title	Host centrality in food web networks determines parasite diversity.
title_short	Host centrality in food web networks determines parasite diversity.
title_full	Host centrality in food web networks determines parasite diversity.
title_fullStr	Host centrality in food web networks determines parasite diversity.
title_full_unstemmed	Host centrality in food web networks determines parasite diversity.
title_sort	host centrality in food web networks determines parasite diversity.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/39187b521d6d4aafb4708dcd84609a84
work_keys_str_mv	AT taviskanderson hostcentralityinfoodwebnetworksdeterminesparasitediversity AT michaelvksukhdeo hostcentralityinfoodwebnetworksdeterminesparasitediversity
_version_	1718423215588507648

Host centrality in food web networks determines parasite diversity.

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