Document Detail

Phylogeny for species of Haemonchus (Nematoda: Trichostrongyloidea): considerations of their evolutionary history and global biogeography among Camelidae and Pecora (Artiodactyla).
MedLine Citation:
PMID:  15562609     Owner:  NLM     Status:  MEDLINE    
Phylogenetic analysis of 25 morphological characters among the 12 species of Haemonchus resulted in 1 most parsimonious tree (60 steps; consistency index = 0.67, retention index = 0.80). Monophyly for Haemonchus was diagnosed by 3 unequivocal synapomorphies, including the asymmetric origin of the dorsal ray, relative size of the ventral rays, and the presence of a barb on each spicule tip. Species of Haemonchus have complex histories with respect to host and geographic associations: (1) origins in Africa with basal diversification in antelopes (H. krugeri, H. lawrencei, H. dinniki, H. horaki), (2) independent events of colonization for those species in Caprini and Bovinae (H. contortus, H. placei, H. bedfordi, H. similis), (3) colonization and development of core host associations within Camelidae (H. longistipes) and among Antilopinae, Tragelaphini, and Giraffidae (H. mitchelli, H. okapiae, H. vegliai), and (4) geographically widespread species that are represented only by those that have been translocated with domestic stock. The North American fauna is characterized by 3 introduced and exotic species, H. placei, H. contortus, H. similis, which emphasizes the importance of continued documentation of faunal diversity in the context of predictive foundations derived from phylogenetic studies. Satellite associations for species of Haemonchus, particularly among Cervidae and Camelidae in the Neotropics and Cervidae, Antilocapridae, and possibly wild Caprinae in the Nearctic, have been a consequence of introductions and exchange of parasites at historical interfaces for managed and natural ecosystems. Such distributions are emblematic of the overriding significance of anthropogenic factors as determinants of the global distributions for pathogenic parasites in domestic and wild ruminants.
Eric R Hoberg; J Ralph Lichtenfels; Lynda Gibbons
Related Documents :
24247349 - Genetic analysis of some seed quality characters in upland cotton (gossypium hirsutum l.).
23766119 - Tyrosine phosphatase tpba of pseudomonas aeruginosa controls extracellular dna via cycl...
20345669 - Sympatric speciation in a genus of marine reef fishes.
25319449 - Fertility subindex for improving fertility performance in iranian holstein cows.
21429109 - Mining online genomic resources in anolis carolinensis facilitates rapid and inexpensiv...
11766959 - Lactobacillus sakei: recent developments and future prospects.
9858029 - Functional polymorphism of -141c ins/del in the dopamine d2 receptor gene promoter and ...
22739709 - Characterization of microsatellites in the mountain plant armeria caespitosa (plumbagin...
22707299 - Analysis of driver mutations in female non-smoker asian patients with pulmonary adenoca...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of parasitology     Volume:  90     ISSN:  0022-3395     ISO Abbreviation:  J. Parasitol.     Publication Date:  2004 Oct 
Date Detail:
Created Date:  2004-11-25     Completed Date:  2004-12-09     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7803124     Medline TA:  J Parasitol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1085-102     Citation Subset:  IM    
US. National Parasite Collection and the Animal Parasitic Diseases Laboratory, USDA, Agricultural Research Service, Beltsville, Maryland 20705-2350, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Haemonchiasis / epidemiology,  parasitology,  veterinary*
Haemonchus / anatomy & histology,  classification*,  physiology
Host-Parasite Interactions
Ruminants / parasitology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  New species of Cinclotaenia macy, 1973 (Cyclophyllidea: Dilepididae) from Cinclus leucocephalus tsch...
Next Document:  A new pentastomid from the black vulture.