TY - JOUR
T1 - Genetic variation in the Heterodoxys octoseriatus group (Phthiraptera)
T2 - A test of price's model of parasite evolution
AU - Barker, Stephen C.
AU - Briscoe, David A.
AU - Close, Robert L.
AU - Dallas, Peter
PY - 1991
Y1 - 1991
N2 - Most of the genetic variation in the H. octoseriatus group is present as fixed gene differences between species which have been described on morphological criteria. Based on allozymes, the taxonomic status of some species was challenged. There was insufficient evidence, however, to demonstrate that these were not 'good' biological species. Overall, the limited intraspecific variation was present as fixed gene differences among lice from different hosts and from different colonies of hosts; heterozygotes were rare. Two predictions derived from Price's model of parasite evolution were met: populations of lice were genetically homogeneous and, where genetic markers were present, we found substantial genetic variation among populations. These data contrast with those for endoparasitic helminths, where, in general, the amount of genetic variation is similar to that of free-living invertebrates.
AB - Most of the genetic variation in the H. octoseriatus group is present as fixed gene differences between species which have been described on morphological criteria. Based on allozymes, the taxonomic status of some species was challenged. There was insufficient evidence, however, to demonstrate that these were not 'good' biological species. Overall, the limited intraspecific variation was present as fixed gene differences among lice from different hosts and from different colonies of hosts; heterozygotes were rare. Two predictions derived from Price's model of parasite evolution were met: populations of lice were genetically homogeneous and, where genetic markers were present, we found substantial genetic variation among populations. These data contrast with those for endoparasitic helminths, where, in general, the amount of genetic variation is similar to that of free-living invertebrates.
KW - alleles
KW - Allozyme electrophoresis
KW - genetic variation
KW - Heterodoxus octoseriatus group
KW - heterozygosity
KW - lice
KW - parasite evolution
KW - polymorphic loci
KW - rock-wallabies
UR - http://www.scopus.com/inward/record.url?scp=0026077525&partnerID=8YFLogxK
U2 - 10.1016/0020-7519(91)90060-K
DO - 10.1016/0020-7519(91)90060-K
M3 - Article
C2 - 1743851
AN - SCOPUS:0026077525
SN - 0020-7519
VL - 21
SP - 555
EP - 563
JO - International Journal for Parasitology
JF - International Journal for Parasitology
IS - 5
ER -