EVOLUTIONARY RELATIONSHIPS OF SIBLING TAPEWORM SPECIES (CESTODA) PARASITIZING TELEOST FISHES

Citation
O. Verneau et al., EVOLUTIONARY RELATIONSHIPS OF SIBLING TAPEWORM SPECIES (CESTODA) PARASITIZING TELEOST FISHES, Molecular biology and evolution, 14(6), 1997, pp. 630-636
Citations number
50
Categorie Soggetti
Biology
ISSN journal
07374038
Volume
14
Issue
6
Year of publication
1997
Pages
630 - 636
Database
ISI
SICI code
0737-4038(1997)14:6<630:EROSTS>2.0.ZU;2-X
Abstract
DNA/DNA hybridization and sequencing of rDNA (partial 18S rDNA and ITS 1) were used to investigate phylogenetic relationships among seven hos t-specific Bothriocephalus parasites (Cestoda, Pseudophyllidae). The s mall nucleotide divergence between six of the seven bothriocephalids s uggests that isolation and differentiation of Bothriocephalus lineages in the different host species probably occurred recently and over a s hort time span. Comparison of the molecular phylogeny of the parasite species to the phylogeny of their hosts (teleostean fishes) revealed l ittle congruence between the branching patterns of hosts and parasites , suggesting that bothriocephalids have not cospeciated with their hos ts.