Body size evolution of oxyurid (nematoda) parasites

The role of hosts

Serge Morand, Pierre Legendre, Scott L Gardner, Jean Pierre Hugot

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Studying the diversification of body size in a taxon of parasites allows comparison of patterns of variation observed in the parasites with patterns found in free-living organisms. The distributions of body size of oxyurid nematodes (obligate parasites of vertebrates and invertebrates) are lognormally right-skewed, except for male oxyurids in invertebrates which show left-skewed distributions. In these parasitic forms, speciose genera do not have the smallest body sizes. Parasite body size is positively correlated with host body size, the largest hosts possessing the largest parasites. This trend is shown to occur within one monophyletic group of oxyurids, those of Old World primates. Comparative methods are used to take account of the effects of phylogeny. The use of multiple linear regression on distance matrices allows measurements of the contribution of phylogeny to the evolution of body size of parasites. Evolution of body size in female pinworms of Old World primates appears to be dependent only on the body size of their hosts. The tendency of parasite body size to increase with host body size is discussed in the light of the evolution of life- history traits.

Original languageEnglish (US)
Pages (from-to)274-282
Number of pages9
JournalOecologia
Volume107
Issue number2
DOIs
StatePublished - Jul 2 1996

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body size
parasite
Nematoda
parasites
primate
phylogeny
Primates
invertebrate
invertebrates
life history trait
nematode
vertebrate
vertebrates
life history
matrix
organisms

Keywords

  • Body size
  • Host-parasite relationship
  • Independent comparisons
  • Lognormally skewed distribution
  • Nematodes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Body size evolution of oxyurid (nematoda) parasites : The role of hosts. / Morand, Serge; Legendre, Pierre; Gardner, Scott L; Hugot, Jean Pierre.

In: Oecologia, Vol. 107, No. 2, 02.07.1996, p. 274-282.

Research output: Contribution to journalArticle

Morand, Serge ; Legendre, Pierre ; Gardner, Scott L ; Hugot, Jean Pierre. / Body size evolution of oxyurid (nematoda) parasites : The role of hosts. In: Oecologia. 1996 ; Vol. 107, No. 2. pp. 274-282.
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