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A DNA Sequence–Based Approach To the Identification of Shark and Ray Species and Its Implications for Global Elasmobranch Diversity and Parasitology
A comprehensive survey of DNA sequences derived from the mitochondrial NADH2 gene was conducted for elasmobranchs collected from around the world, suggesting 79 potentially new taxa that are genetically distinct from their closest relatives in other regions. Expand
Elasmobranch Phylogeny: A Mitochondrial Estimate Based on 595 Species
Interest in elasmobranch biodiversity and taxonomy has grown in recent years, catalyzed primarily by four influences: (1) the large number of new species that have been described over the past 30Expand
Characterization of a diversity of tetraphyllidean and rhinebothriidean cestode larval types, with comments on host associations and life-cycles.
This is the first published study that approaches the elucidation of marine tapeworm life-cycles by incorporating morphological, molecular biological and phylogenetic methods using specimens collected on a regional scale and from wild-caught hosts from four metazoan phyla. Expand
Orders out of chaos--molecular phylogenetics reveals the complexity of shark and stingray tapeworm relationships.
The present analyses contribute significantly to an understanding of the evolutionary radiation of the entire Cestoda and indicate that elasmobranch tapeworms comprise the backbone of cestode phylogeny. Expand
On the phylogenetic relationships among tetraphyllidean, lecanicephalidean and diphyllidean tapeworm genera
The tetraphyllideans, lecanicephalideans and proteocephalideans are more closely related to each other than they are to the diphyllideans or the trypanorhynchs, and some aspects of the classification of the lecanICEphalidean and tet graphyllidean taxa require revision. Expand
Proposal for a new tapeworm order, Rhinebothriidea.
Histological sections and scanning electron microscopy of selected members of the study group suggest that the presence of bothridial stalks may serve as an effective morphological feature to characterise the new order Rhinebothriidea, restricted to elasmobranchs. Expand
A Digest of Elasmobranch Tapeworms
The tapeworms of elasmobranchs and their hosts are now among the most well documented host-parasite systems in existence, but this system has not yet reached its potential as a resource for investigations of basic ecological and evolutionary principles. Expand
Evolution of the trypanorhynch tapeworms: parasite phylogeny supports independent lineages of sharks and rays.
It appears that host-switching has been common and that the subsequent evolution of the parasites has been ecologically driven primarily through overlap in the niches of their shark and ray hosts, which supports the most recent molecular phylogenies of the Neoselachii. Expand
An investigation of the co-evolutionary relationships between onchobothriid tapeworms and their elasmobranch hosts.
  • J. Caira, K. Jensen
  • Biology, Medicine
  • International journal for parasitology
  • 1 July 2001
The preliminary and limited available data suggest that, at least in this system, strict host specificity is not necessarily indicative of strict co-evolution, and that congeners parasitising the same host species are not necessarily each other's closest relatives. Expand