Phylogenetic Distance of Thelohania butleriJohnston, Vernick, and Sprague, 1978 (Microsporidia; Thelohaniidae), a Parasite of the Smooth Pink Shrimp Pandalus jordani, from its Congeners Suggests Need for Major Revision of the Genus Thelohania Henneguy, 1892

Journal of Eukaryotic Microbiology - Tập 53 Số 6 - Trang 445-455 - 2006
Amanda M. V. Brown1, Martin L. Adamson1
1Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada

Tóm tắt

ABSTRACT. Thelohania butleri, a microsporidian that causes mortality and commercial losses in the smooth pink shrimp Pandalus jordani, is of taxonomic interest as a species resembling the poorly studied type species, Thelohania giardi, of the large, polyphyletic genus Thelohania. We examined the ultrastructure of T. butleri to confirm its identity and reconstructed phylogenies using ribosomal DNA to find the relationship of T. butleri with other Thelohania species in crayfish and ants. Light and transmission electron microscopy from specimens collected from the type locality, the Pacific coast of Canada, confirmed the identity and demonstrated a development similar to that of T. giardi, involving a series of binary fissions without formation of a plasmodium. Phylogenetic analyses consistently showed T. butleri to be distantly related to other Thelohania species, and closely related to species from marine decapods within a larger fish‐parasitic clade. Together, features such as host group and habitat, developmental morphology, and phylogeny suggest T. butleri may be a closer relative to T. giardi than any other Thelohania species represented by DNA data so far, and thus imply species from crayfish and ants may not belong in this genus. Results also confirm that genus Thelohania and family Thelohanidae are in need of revision.

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Tài liệu tham khảo

10.1111/j.1550-7408.2002.tb00382.x

Baker M. D., 1998, Phylogeny of Amblyospora (Microsporida: Amblyosporidae) and related genera based on small subunit ribosomal DNA data, a possible example of host parasite cospeciation, 71, 199

10.1111/j.1550-7408.1997.tb05704.x

10.1111/j.1550-7408.1995.tb05906.x

10.1111/j.1550-7408.2001.tb00313.x

Butler T. H., 1980, Shrimps of the Pacific coast of Canada, Can. Bull. Fish. Aquat. Sci., 202, 280

Canning E. U., 1986, The Microsporidia of Vertebrates, 1

10.1111/j.1550-7408.2001.tb00422.x

10.3354/dao029041

Docker M. F., 1997, Ribosomal DNA sequence of Nucleospora salmonis Hedrick, Groff and Baxa, 1991 (Microsporea: Enterocytozoonidae), implications for phylogeny and nomenclature, 44, 55

10.1128/CMR.12.2.243

10.1111/j.1550-7408.2005.00066.x

10.1111/j.1550-7408.2005.04-3324.x

10.1016/j.jip.2005.11.007

10.1016/S0003-9365(11)80111-9

Gurley R., 1893, On the classification of the Myxosporidia, a group of protozoan parasites infesting fishes, Bull. U.S. Fish. Comm. 1891, 11, 407

Hazard E. I., 1975, Revision of microsporida (Protozoa) close to Thelohania, with descriptions of one new family, eight new genera, and thirteen new species, U.S. Dept. Agric. Tech. Bull., 1530, 1

Henneguy F., 1892, Myxosporidies parasites des muscles chez quelques crustacés décapodes, Ann. Microgr., 4, 617

10.1016/0022-2011(78)90190-8

Larsson J. I. R.1996. Microsporidia in microcrustaceans. Scandinavian Section Society of Protozoologists 18th Annual Meeting. Abstract 202.

Larsson J. I. R., 1999, Identification of microsporidia, Acta Protozool., 38, 161

Lom J., 2003, Fish microsporidia, fine structural diversity and phylogeny, 33, 107

Lom J., 2001, Thelohania contejeani Henneguy, 1892, dimorphic life cycle and taxonomic affinities, as indicated by ultrastructural and molecular study, 87, 860

Mercier L., 1909, Contribution à l'étude de la sexualité chez les myxosporidies et chez les microsporidies, Mém. Acad. R. de Belg. Cl. Sci., 2, 1

Moodie E. G., 2003, Thelohania montirivulorum sp. nov. (Microspora: Thelohaniidae), a parasite of the Australian freshwater crayfish, Cherax destructor (Decapoda: Parastacidae), fine ultrastructure, molecular characteristics and phylogenetic relationships, 91, 215

10.1645/0022-3395(2000)086[0128:SSRDPO]2.0.CO;2

10.1017/S003118200100779X

10.1111/j.1550-7408.1998.tb05113.x

10.1016/0022-2011(84)90087-9

Ovcharenko N. A., 1995, About the effect of the environment on intracellular parasites of hydrobionts, Gidrobiol. Zh., 31, 65

Page R. D., 1996, TreeView, an application to display phylogenetic trees on personal computers, 12, 357

Posada D., 1998, MODELTEST, testing the model of DNA substitution, 14, 817

10.1007/978-94-011-2134-7_1

10.1017/S0031182001001305

10.1016/S0022-2011(03)00057-0

10.1080/10635150290069913

Shimodaira H., 2001, CONSEL, for assessing the confidence of phylogenetic tree selection, 17, 1246

Sprague V., 1977, Comparative Pathology. 2. Systematics of the Microsporidia, 1

10.3109/10408419209113519

Swofford D. L., 2001, PAUP*. Phylogenetic Analysis Using Parsimony (* and Other Methods). Version 4

10.1111/j.1550-7408.2003.tb00133.x

Thompson J. D., 1994, CLUSTAL W, improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position specific gap penalties and weight matrix choice, 22, 4673

10.1093/nar/28.1.175

10.1111/j.1550-7408.1977.tb05284.x

Vossbrinck C. R., 2005, Molecular phylogeny of the Microsporidia, ecological, ultrastructural and taxonomic considerations, 52, 131

10.1111/j.1550-7408.1998.tb04538.x

10.1128/9781555818227.ch4