Comparative analysis of parasite species richness of Iberian rodents

被引:104
作者
Feliu, C
Renaud, F
Catzeflis, F
Hugot, JP
Durand, P
Morand, S
机构
[1] UNIV PERPIGNAN, CTR BIOL & ECOL TROP & MEDITERRANEENNE, CNRS, UMR 5555, F-66860 PERPIGNAN, FRANCE
[2] UNIV BARCELONA, FAC FARM, PARASITOL LAB, E-08028 BARCELONA, SPAIN
[3] UNIV MONTPELLIER 2, LAB PARASITOL COMPAREE, CNRS, UMR 5555, F-34095 MONTPELLIER 05, FRANCE
[4] UNIV MONTPELLIER 2, INST SCI EVOLUT, CNRS, UMR 5554, F-34095 MONTPELLIER 05, FRANCE
[5] MUSEUM NATL HIST NAT, LAB BIOL PARASITAIRE, CNRS, URA 114B, F-75231 PARIS 05, FRANCE
关键词
parasite species richness; independent comparisons; specificity; biogeographical range; Iberian peninsula;
D O I
10.1017/S0031182097001479
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Data on parasites of rodents, collected over an 18-year period on the Iberian peninsula, were used to fmd the determinants of parasite species richness. A total of 77 species of helminth parasites (nematodes, cestodes and digeneans) was identified among 16 species of rodents. Parasites were classified into groups according to their specificity towards their host and their life-cycle. A working phylogeny of the rodents was proposed on the basis of molecular and paleontological data and for each host the following parameters were recorded: sample size, weight, geographical range, longevity, and life-style. Two comparative methods were used, the independent comparisons method of Pagel (1992) and the distance matrix method of Legendre, Lapointe & Casgrain (1995). The second method has the advantage of measuring the relative contribution of phylogeny. Both methods gave similar results. Overall parasite species richness correlated only with host sample size. Host body size does not correlate with any subset of parasite species richness. However, host phylogeny is a good predicator of specific parasites and the species richness of digeneans correlates with host geographical range. A phylogenetic reconstruction of host relations was performed using the parasites belonging to subgroups in which richness is correlated with host phylogeny. These parasite species were treated as Dollo characters, i.e. we made the assumption that the loss of a parasite species is irreversible. The consensus tree obtained reflects the major phylogenetic divisions of the host group. Finally, this study illustrates the relative importance of processes acting at different temporal and spatial scales (evolutionary time and actual geographical range of hosts) in determining the structure of helminth parasite fauna.
引用
收藏
页码:453 / 466
页数:14
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