Description of new types of sphaeractinomyxon actinospores (Myxozoa: Myxosporea) from marine tubificid oligochaetes, with a discussion on the validity of the tetraspora and the endocapsa as actinospore collective group names
Tóm tắt
Ten new types of sphaeractinomyxon actinospores are morphologically and molecularly described from the coelomic cavity of two marine oligochaete hosts, Limnodriloides agnes (Hrabě, 1967) and Tubificoides pseudogaster (Dahl, 1960), from Aveiro estuary, Portugal. The smallest sphaeractinomyxon type measured 17 μm (length) × 19 μm (width) × 19 μm (apical diameter), whereas the largest type measured 61 μm × 76 μm × 80 μm. While considering the 10 types of sphaeractinomyxon, it was found that the number of spores developing inside pansporocysts varied between 1, 2, 4, and 8. The total prevalence of infection was of 19 % for the two host species, with a maximum recorded for spring and summer (25–26 %). While considering each type of sphaeractinomyxon individually, it was found that the prevalence values ranged between 0.3 and 1.7 %. All described sphaeractinomyxons were most similar to Myxobolus species. The validity of the tetraspora and endocapsa collective group names is discussed.
Tài liệu tham khảo
Barta JR, Martin DS, Liberator PA, Dashkevicz M, Anderson JW, Feighner SD, Elbrecht A, Perkins-Barrow A, Jenkins MC, Danforth HD, Ruff MD, Profous-Juchelka H (1997) Phylogenetic relationships among eight Eimeria species infecting domestic fowl inferred using complete small subunit ribosomal DNA sequences. J Parasitol 83:262–271. doi:10.2307/3284453
Caullery M, Mesnil F (1904) Sur un nouveau (Sphaeractinomyxon stolci n.g. n.sp.) d’Actinomyxidies et son développement. C R Hebdomadaires Soc Biol 56:408–410
Caullery M, Mesnil F (1905) Recherches sur les Actinomyxidies. I. Sphaeractinomyxon stolci Caullery et Mesnil. Arch Protistenkd 6:272–308
Eszterbauer E, Atkinson S, Diamant A, Morris D, El-Matbouli M, Hartikainen H (2015) Myxozoan life cycles: practical approaches and insights. In: Okamura B et al (eds) Myxozoan Evolution, Ecology and Development. Springer International Publishing, Switzerland. doi:10.1007/978-3-319-14753-6_10
Fiala I (2006) The phylogeny of Myxosporea (Myxozoa) based on small subunit ribosomal RNA gene analysis. Int J Parasitol 36:1521–1534. doi:10.1016/j.ijpara.2006.06.016
Fiala I, Hlavničková M, Kodádková A et al (2015) Evolutionary origin of Ceratonova shasta and phylogeny of the marine myxosporean lineage. Mol Phylogenet Evol 86:75–89. doi:10.1016/j.ympev.2015.03.004
Hallett SL, Diamant A (2001) Ultrastructure and small-subunit ribosomal DNA sequence of Henneguya lesteri n.sp. (Myxosporea), a parasite of sand whiting Sillago analis (Sillaginidae) from the coast of Queensland, Australia. Dis Aquat Org 46:197–212. doi:10.3354/dao046197
Hallett SL, Lester RJG (1999) Actinosporeans (Myxozoa) with four developing spores within a pansporocyst: Tetraspora discoidea n.g. n.sp. and Tetraspora rotundum n.sp. Int J Parasitol 29:419–427. doi:10.1016/S0020-7519(98)00228-8
Hallett SL, Erséus C, Lester RJG (1997) Actinosporea from Hong Kong marine Oligochaeta. In: Morton B (ed) Proceedings of the Eighth International Marine Biological Workshop: The Marine Flora and Fauna of Hong Kong and Southern China, Hong Kong 1995, The marine flora and fauna of Hong Kong and southern China IV. Hong Kong University Press, Hong Kong, pp 1–7
Hallett SL, O’Donoghue PJ, Lester RJG (1998) Structure and development of a marine actinosporean, Sphaeractinomyxon ersei n. sp. (Myxozoa). J Eukaryot Microbiol 45:142–150. doi:10.1111/j.1550-7408.1998.tb05082.x
Hallett SL, Erséus C, Lester RJG (1999) Actinosporeans (Myxozoa) from marine oligochaetes of the Great Barrier Reef. Syst Parasitol 44:49–57. doi:10.1023/A:1006105503243
Hallett SL, Erséus C, O’Donoghue PJ, Lester RJG (2001) Parasite fauna of Australian marine oligochaetes. Mem Queensland Mus 46:555–576
Hillis DM, Dixon MT (1991) Ribosomal DNA: molecular evolution and phylogenetic inference. Q Rev Biol 66:411–453
Kent ML, Margolis L, Corliss JO (1994) The demise of a class of protists: taxonomic and nomenclatural revisions proposed for the protist phylum Myxozoa Grassé, 1970. Can J Zool 72:932–937. doi:10.1139/z94-126
Kent ML, Andree KB, Bartholomew JL, El-Matbouli M, Desser SS, Devlin RH, Feist SW, Hedrick RP, Hoffmann RW, Khattra J, Hallett SL, Lester RJG, Longshaw M, Palenzeula O, Siddall ME, Xiao C (2001) Recent advances in our knowledge of the Myxozoa. J Eukaryot Microbiol 48:395–413. doi:10.1111/j.1550-7408.2001.tb00173.x
Kvist S, Sarkar IN, Erséus C (2010) Genetic variation and phylogeny of the cosmopolitan marine genus Tubificoides (Annelida: Clitellata: Naididae: Tubificinae). Mol Phylogenet Evol 57:687–702. doi:10.1016/j.ympev.2010.08.018
Lom J, McGeorge J, Feist SW, Morris D, Adams A (1997) Guidelines for the uniform characterisation of the actinosporean stages of parasites of the phylum Myxozoa. Dis Aquat Org 30:1–9. doi:10.3354/dao030001
Marques A. (1984) Contribution a la connaissance des Actinomyxidies: ultrastructure, cycle biologique, systématique. Ph.D. Thesis, Université des Sciences et Techniques de Languedoc, Montepellier, France, 218 pp
Palumbi S, Martin A, Romano S, McMillan WO, Stice L, Grabowski G (2002) The Simple Fools Guide to PCR, Version 2.0. University of Hawaii, Honolulu. http://palumbi.stanford.edu/SimpleFoolsMaster.pdf. Accessed 12 January 2015
Puytorac PD (1963) L’ultrastructure des cnidocystes de l’Actinomyxidie: Sphaeractinomyxon amanieui sp. nov. C R Acad Sci, Paris 256:1594–1596
Staden R, Beal KF, Bonfield JK (2000) The Staden package, 1998. Methods Mol Biol 132:115–130. doi:10.1385/1-59259-192-2:115
Székely C, Hallett SL, Al-Samman A, Dayoub A (2007) First description of myxozoans from Syria: novel records of hexactinomyxon, triactinomyxon and endocapsa actinospore types. Dis Aquat Org 74:127–137
Tamura K, Peterson D, Peterson N, Stecher G, Nei M, Kumar S (2011) MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Mol Biol Evol 28:2731–2739
Whipps CM, Adlard RD, Bryant MS et al (2003) First report of three Kudoa species from Eastern Australia: Kudoa thyrsites from Mahi mahi (Coryphaena hippurus), Kudoa amamiensis and Kudoa minithyrsites n. sp. from sweeper (Pempheris ypsilychnus). J Eukaryot Microbiol 50:215–219. doi:10.1111/j.1550-7408.2003.tb00120.x
Wolf K, Markiw ME (1984) Biology contravenes taxonomy in the Myxozoa: new discoveries show alternation of invertebrate and vertebrate hosts. Science 225:1449–1452. doi:10.1126/science.225.4669.1449
Yokoyama H, Grabner D, Shirakashi S. (2012). Transmission Biology of the Myxozoa. In: Carvalho E (ed) Health and Environment in Aquaculture, pp. 3–42. InTech