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Intra- and interspecific similarity in species composition of helminth communities in two closely-related rodents from South Africa

Published online by Cambridge University Press:  09 May 2017

ANDREA SPICKETT
Affiliation:
Agricultural Research Council-Onderstepoort Veterinary Institute, Private Bag X05, Onderstepoort, 0110, South Africa Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
KERSTIN JUNKER
Affiliation:
Agricultural Research Council-Onderstepoort Veterinary Institute, Private Bag X05, Onderstepoort, 0110, South Africa
BORIS R. KRASNOV
Affiliation:
Mitrani Department of Desert Ecology, Swiss Institute for Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, 84990 Midreshet Ben-Gurion, Israel
VOITTO HAUKISALMI
Affiliation:
Piettasenkatu 38 A 23 33580 Tampere, Finland
SONJA MATTHEE*
Affiliation:
Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
*
*Corresponding author: Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa. E-mail: smatthee@sun.ac.za

Summary

To reveal factors responsible for spatial variation in parasite community composition we studied patterns of similarity in helminth species composition in two closely-related rodents (Rhabdomys pumilio and Rhabdomys dilectus) that differ in their social and spatial behaviour and live under different environmental conditions across 20 localities in South Africa. We asked whether the two hosts harbour similar assemblages, whether these are more dissimilar between than within hosts and if host social structure, behaviour or environment affects similarity patterns in helminth infracommunities within and among localities. We also investigated whether similarity in species composition of helminth component communities decreases with an increase of geographic distance between host populations. We found that the pattern of space use by the hosts rather than their social behaviour promotes differences in helminth species composition between host species as well as among host populations from different localities. The rate of distance decay of similarity in species composition of helminth component communities differed between the two hosts due to difference in the degree of environmental variation across their geographic ranges. We conclude that patterns of spatial variation in helminth species composition are driven mainly by host spatial behaviour and, to a lesser extent, by environment-associated factors.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2017 

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