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Titolo:
Recent advances in our knowledge of the Myxozoa
Autore:
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, CX;
Indirizzi:
Oregon State Univ, Dept Microbiol, Ctr Salmon Dis Res, Corvallis, OR 97331USA Oregon State Univ Corvallis OR USA 97331 Dis Res, Corvallis, OR 97331USA Univ Calif Davis, Sch Vet Med, Dept Med & Epidemiol, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 Med & Epidemiol, Davis, CA 95616 USA Univ Munich, Inst Zool Fischerei Biol & Fischkrankheiten, D-80539 Munich, Germany Univ Munich Munich Germany D-80539 hkrankheiten, D-80539 Munich, Germany Univ Toronto, Dept Zool, Toronto, ON M5S 3G5, Canada Univ Toronto TorontoON Canada M5S 3G5 Zool, Toronto, ON M5S 3G5, Canada Fisheries & Oceans Canada, W Vancouver Lab, W Vancouver, BC V7V 1N6, Canada Fisheries & Oceans Canada W Vancouver BC Canada V7V 1N6 C V7V 1N6, Canada Weymouth Lab, Ctr Environm Fisheries & Aquaculture Sci, The Northe DT4 8UB, Dorset, England Weymouth Lab The Northe Dorset England DT4 8UB e DT4 8UB, Dorset, England Univ Queensland, Dept Microbiol & Parasitol, Brisbane, Qld 4072, AustraliaUniv Queensland Brisbane Qld Australia 4072 Brisbane, Qld 4072, Australia CSIC, Inst Acuicultura, E-12595 Ribera de Cabanes, Castellon, Spain CSIC Ribera de Cabanes Castellon Spain E-12595 Cabanes, Castellon, Spain Amer Museum Nat Hist, Div Invertebrate Zool, New York, NY USA Amer Museum Nat Hist New York NY USA Invertebrate Zool, New York, NY USA
Titolo Testata:
JOURNAL OF EUKARYOTIC MICROBIOLOGY
fascicolo: 4, volume: 48, anno: 2001,
pagine: 395 - 413
SICI:
1066-5234(200107/08)48:4<395:RAIOKO>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROLIFERATIVE KIDNEY-DISEASE; POLYMERASE-CHAIN-REACTION; SALMONID WHIRLING DISEASE; TROUT ONCORHYNCHUS-MYKISS; OLIGOCHAETE ALTERNATE HOSTS; REARED ATLANTIC SALMON; IN-SITU HYBRIDIZATION; GOLDFISH CARASSIUS-AURATUS; RIBOSOMAL DNA-SEQUENCE; N-SP MYXOSPOREA;
Keywords:
actinosporea; Ceratomyxa; disease; fin fish; Kudoa; Myxidium; Myxosporean; Myxozoa; nomenclature; phylogeny; Sphaerospora; Tetracapsula; whirling disease;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
203
Recensione:
Indirizzi per estratti:
Indirizzo: Kent, ML Oregon State Univ, Dept Microbiol, Ctr Salmon Dis Res, 220 Nash Hall, Corvallis, OR 97331 USA Oregon State Univ 220 Nash Hall Corvallis OR USA 97331 97331 USA
Citazione:
M.L. Kent et al., "Recent advances in our knowledge of the Myxozoa", J EUKAR MIC, 48(4), 2001, pp. 395-413

Abstract

In the last few years two factors have helped to significantly advance ourunderstanding of the Myxozoa. First, the phenomenal increase in fin fish aquaculture in the 1990s has lead to the increased importance of these parasites; in rum this has lead to intensified research efforts, which have increased knowledge of the development, diagnosis, and pathogenesis of myxozoans. The hallmark discovery in the 1980s that the life cycle of Myxobolus cerebralis requires development of an actinosporean stage in the Oligochaete. Tubifex tubifex, led to the elucidation of the life cycles of several othermyxozoans. Also, the life cycle and taxonomy of the enigmatic PKX myxozoanhas been resolved: it is the alternate stage of the unusual myxozoan. Tetracapsula bryosalmonae, from bryozoans. The 18S rDNA gene of many species has been sequenced, and here we add 22 new sequences to the data set. Phylogenetic analyses using all these sequences indicate that: 1) the Myxozoa are closely related to Cnidaria (also supported by morphological data), 2) marine taxa at the genus level branch separately from genera that usually infect freshwater fishes; 3) taxa cluster more by development and tissue location than by spore morphology; 4) the tetracapsulids branched off early in myxozoan evolution, perhaps reflected by their having bryozoan. rather than annelid hosts; 5) the morphology of actinosporeans offers little information for determining their myxosporean counterparts (assuming that they exist), and 6) the marine actinosporeans from Australia appear to form a clade within the platysporinid myxosporeans. Ribosomal DNA sequences have also enabled development of diagnostic tests for myxozoans. PCR and in situ hybridisation tests based on rDNA sequences have been developed for Myxobolus cerebralis. Ceratomyxa shasta. Kudoa spp,, and Tetracapsula bryosalmonae (PKX). Lectin-based and antibody tests have also been developed for certain myxozoans, such as PKX and C. shasta. We also review important diseases caused by myxozoans. which are emerging or re-emerging. Epizootics of whirling diseasein wild rainbow trout (Oncorhynchus mykiss) have recently been reported throughout the Rocky Mountain states of the USA. With a dramatic increase in aquaculture of fishes using marine netpens, several marine myxozoans have been recognized or elevated in status as pathological agents. Kudoa thyrsites infections have caused severe post-harvest myoliquefaction in pen-reared Atlantic salmon (Salmo salar), and Ceratomyxa spp., Sphaerospora spp., and Myxidium leei cause disease in pen-reared sea bass (Dicentrarchus labrax) and sea bream species (family Sparidae) in Mediterranean countries.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 20:32:27