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Reciprocal specialization in multihost malaria parasite communities of birds: a temperate-tropical comparison

Svensson-Coelho, Maria LU ; Ellis, Vincenzo A LU ; Loiselle, Bette A.; Blake, John G. and Ricklefs, Robert E (2014) In American Naturalist 184(5). p.624-635
Abstract
How specialization of consumers with respect to resources varies with respect to latitude is poorly understood. Coexistence of many species in the tropics might be possible only if specialization also increases. Alternatively, lower average abundance of more diverse biotic resources in the tropics might force consumers to become more generalized foragers. We examine levels of reciprocal specialization in an antagonistic system—avian malaria—to determine whether the number of host species used and/or parasite lineages harbored differ between a temperate and a tropical assemblage. We evaluate the results of network analysis, which can incorporate both bird and parasite perspectives on specialization in one quantitative index, in comparison... (More)
How specialization of consumers with respect to resources varies with respect to latitude is poorly understood. Coexistence of many species in the tropics might be possible only if specialization also increases. Alternatively, lower average abundance of more diverse biotic resources in the tropics might force consumers to become more generalized foragers. We examine levels of reciprocal specialization in an antagonistic system—avian malaria—to determine whether the number of host species used and/or parasite lineages harbored differ between a temperate and a tropical assemblage. We evaluate the results of network analysis, which can incorporate both bird and parasite perspectives on specialization in one quantitative index, in comparison to null models. Specialization was significantly greater in both sample sites than predicted from null models. We found evidence for lower per-host species parasite diversity in temperate compared to tropical birds. However, specialization did not differ between the tropical and temperate sites from the parasite perspective. We supplemented the network analysis with estimates of specialization that incorporate phylogenetic relationships of associates and found no differences between sites. Thus, our analyses indicate that specialization within an antagonistic host-parasite (resource-consumer) system varies little between tropical and temperate localities. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
antagonistic interactions, coevolution, community ecology, Haemosporida, latitudinal gradient
in
American Naturalist
volume
184
issue
5
pages
12 pages
publisher
University of Chicago Press
external identifiers
  • scopus:84908007412
ISSN
0003-0147
DOI
10.1086/678126
language
English
LU publication?
no
id
c8aff03d-f15c-4725-8adf-96d1cd6309d7
date added to LUP
2017-05-09 15:03:36
date last changed
2017-09-10 05:18:45
@article{c8aff03d-f15c-4725-8adf-96d1cd6309d7,
  abstract     = {How specialization of consumers with respect to resources varies with respect to latitude is poorly understood. Coexistence of many species in the tropics might be possible only if specialization also increases. Alternatively, lower average abundance of more diverse biotic resources in the tropics might force consumers to become more generalized foragers. We examine levels of reciprocal specialization in an antagonistic system—avian malaria—to determine whether the number of host species used and/or parasite lineages harbored differ between a temperate and a tropical assemblage. We evaluate the results of network analysis, which can incorporate both bird and parasite perspectives on specialization in one quantitative index, in comparison to null models. Specialization was significantly greater in both sample sites than predicted from null models. We found evidence for lower per-host species parasite diversity in temperate compared to tropical birds. However, specialization did not differ between the tropical and temperate sites from the parasite perspective. We supplemented the network analysis with estimates of specialization that incorporate phylogenetic relationships of associates and found no differences between sites. Thus, our analyses indicate that specialization within an antagonistic host-parasite (resource-consumer) system varies little between tropical and temperate localities.},
  author       = {Svensson-Coelho, Maria and Ellis, Vincenzo A and Loiselle, Bette A. and Blake, John G. and Ricklefs, Robert E},
  issn         = {0003-0147},
  keyword      = {antagonistic interactions,coevolution,community ecology,Haemosporida,latitudinal gradient},
  language     = {eng},
  number       = {5},
  pages        = {624--635},
  publisher    = {University of Chicago Press},
  series       = {American Naturalist},
  title        = {Reciprocal specialization in multihost malaria parasite communities of birds: a temperate-tropical comparison},
  url          = {http://dx.doi.org/10.1086/678126},
  volume       = {184},
  year         = {2014},
}