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https://www.readbyqxmd.com/read/28870697/a-new-pathogen-myxobolus-holzerae-myxosporea-myxozoa-causing-severe-gill-disease-in-an-indian-major-carp-labeo-rohita-in-a-cold-water-wetland-punjab-india
#1
Aditya Gupta, Harpreet Kaur
The Indian major carp, Labeo rohita Hamilton, 1822 is a tropical freshwater cyprinid fish native to inland waters in Asia. Herein, we describe a novel myxozoan forming plasmodia in the gill lamellae of L. rohita from Ranjit Sagar Wetland in Punjab, India. Myxospores were consistent with the genus Myxobolus, round to elliptical in valvular view, lemon shaped in side view with a characteristic protrusion at the anterior end and a round posterior end; length 7.65 ± 0.07 μm, width 4.62 ± 0.09 μm. There were two polar capsules of equal length, pear shaped, length of polar capsule 2...
September 8, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28842807/ceratomyxa-azevedoi-n-sp-myxozoa-myxosporea-parasitizing-the-gallbladder-of-lutjanus-ehrenbergii-in-the-arabian-gulf
#2
Abdel-Azeem S Abdel-Baki, Hussain A Al-Qahtani, Saleh Al-Quraishy, Lamjed Mansour
A novel myxosporean species, Ceratomyxa azevedoi sp. n. is described from the gallbladder of the blackspot snapper, Lutjanus ehrenbergii (Peters), captured from the Arabian Gulf off Saudi Arabia. A total of 45 (26.8%) out of 168 fish specimens were found to be infected with Ceratomyxa azevedoi sp. n., the highest prevalence being observed in winter (42.9%, 18/42) and the lowest in autumn (11.9%, 5/42). Mature spores appeared as crescent to slightly elliptical-shaped, measuring 5-7 (6) μm in length and 12 (10-14) μm in thickness, with spherical polar capsules containing three polar filament coils...
August 25, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28827642/functional-and-proteomic-analysis-of-ceratonova-shasta-cnidaria-myxozoa-polar-capsules-reveals-adaptations-to-parasitism
#3
Gadi Piriatinskiy, Stephen D Atkinson, Sinwook Park, David Morgenstern, Vera Brekhman, Gilad Yossifon, Jerri L Bartholomew, Tamar Lotan
Myxozoa is a diverse, speciose group of microscopic parasites, recently placed within the phylum Cnidaria. Myxozoans are highly reduced in size and complexity relative to free-living cnidarians, yet they have retained specialized organelles known as polar capsules, akin to the nematocyst stinging capsules of free-living species. Whereas in free-living cnidarians the stinging capsules are used for prey capture or defense, in myxozoans they have the essential function of initiating the host infection process...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28823038/ultrastructural-morphology-and-phylogeny-of-henneguya-gilbert-n-sp-myxozoa-infecting-the-teleostean-cyphocharax-gilbert-characiformes-curimatidae-from-brazil
#4
Graça Casal, Sérgio C São Clemente, Leila Lopes, Sónia Rocha, Nilza Felizardo, Elsa Oliveira, Saleh Al-Quraishy, Carlos Azevedo
This paper describes light and ultrastructural observations and molecular analysis of a fish-infecting myxosporean, Henneguya gilbert n. sp., which was found infecting the gill epithelium of the commercially important freshwater teleost fish Cyphocharax gilbert (Curimatidae) collected in the estuarine region of Guandu River, Rio de Janeiro State, Brazil. The parasite occurs in the gills, forming whitish spherical to ellipsoidal polysporic cysts measuring up to ~ 750 μm, and displaying asynchronous development...
August 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28681102/four-myxobolus-spp-myxosporea-bivalvulida-from-the-gill-lamellae-of-common-carp-cyprinus-carpio-and-japanese-silver-crucian-carp-carassius-langsdorfii-in-the-western-part-of-japan-with-the-description-of-three-new-species-m-tanakai-n-sp-m-paratoyamai-n-sp-and
#5
Eigo Kato, Akihiro Kasai, Hisayuki Tomochi, Ying-Chun Li, Hiroshi Sato
Approximately three dozen Myxobolus spp. (Myxozoa: Myxosporea: Bivalvulida) have been described to parasitize the gills of carp of the genera Cyprinus and Carassius. Hitherto, these fish were often introduced to temperate waters worldwide as food and ornamental fish from Asia, their place of origin. The present study examined the myxosporean infection of seven common carp (Cyprinus carpio) and seven Japanese silver crucian carp (Carassius langsdorfii) collected from the Fushinogawa River around the university in Yamaguchi City, Japan, during the period April 2015 to October 2016...
July 5, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28624876/morphological-and-molecular-characterization-of-a-new-cyprinid-gall-bladder-infecting-chloromyxum-species-chloromyxum-peleci-sp-n-myxozoa-chloromyxidae-from-pelecus-cultratus-l-in-russia
#6
X H Liu, V N Voronin, A S Dudin, D A Morozova, J Y Zhang
Extensive sampling to get rich data is very important to resolve the current taxonomic problem of Chloromyxum genus and elucidate the nature phylogenetic relationships among congeneric species. During the parasitological survey of cyprinid fish in Gulf of Finland off the coast of St. Petersburg, a new Chloromyxum species, named as Chloromyxum peleci sp. n., was found to infect the gall bladder of sichel, Pelecus cultratus (L.). Here, we provided the morphological, ultrastructural, and molecular features to describe it...
August 2017: Parasitology Research
https://www.readbyqxmd.com/read/28615831/species-diversity-of-the-genus-thelohanellus-kudo-1933-myxozoa-bivalvulida-parasitizing-fishes-in-indian-subcontinent
#7
REVIEW
Harpreet Kaur, Ranjeet Singh, Anu Katoch, Rajni Attri, Shoaib Ali Dar, Aditya Gupta
A synopsis of 52 nominal species of the genus Thelohanellus Kudo, 1933 reported to infect freshwater fishes in India is presented. These species infect various organs such as gills, fins, scales, skin, muscles, gall bladder, kidney etc. The diagnostic features of the genus include tear-shaped myxospores with smooth shell valves and single polar capsule. The members are histozoic in their nature of parasitism infecting fresh water fishes. The present manuscript is aimed to compile the list of reported species in India along with essential information on morphometrics of vegetative stage, host, organ preference and pathogenic effects if any...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28610340/myxosporea-cnidaria-myxozoa-infecting-the-saddled-seabream-oblada-melanura-l-1758-teleostei-sparidae-and-the-painted-comber-serranus-scriba%C3%A2-l-1758-teleostei-serranidae-in-tunisia
#8
Sayef Laamiri
First parasitological surveys of Myxozoa are performed on the sparid saddled seabream Oblada melanura (Linnaeus, 1758) and the serranid painted comber Serranus scriba (Linnaeus, 1758) caught from the Bay of Bizerte and the Gulf of Tunis respectively in Northeast Tunisia, Western Mediterranean. In this study, 6 bivalvulid myxosporean species belonging to the 3 genera Ceratomyxa Thélohan, 1892, Myxodavisia Zhao, Zhou, Kent & Whipps, 2008 and Zschokkella Auerbach, 1910, are isolated infecting their hosts. Two species Ceratomyxa sp...
May 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28466246/pathogenic-endoparasites-of-the-spotted-seatrout-cynoscion-nebulosus-patterns-of-infection-in-estuaries-of-south-carolina-usa
#9
Stephen A Arnott, Iva Dyková, William A Roumillat, Isaure de Buron
Six types of pathogenic endoparasites in an economically important fish, spotted seatrout Cynoscion nebulosus, were studied in order to test whether prevalence of infection and assemblage richness varied with season, host sex, host size, or host age. Fish were collected from South Carolina estuaries, USA, over 12 months (n = 216; total lengths 15-663 mm). They were screened histologically for presence of Henneguya cynoscioni (Myxozoa) and Cardicola spp. (Digenea) in the heart, Kudoa inornata (Myxozoa) in the skeletal muscle, Sinuolinea dimorpha (Myxozoa) in the urinary system, Ichthyophonus sp...
May 2, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28450209/a-new-myxidium-species-myxozoa-myxosporea-infecting-the-gallbladder-of-the-turtle-podocnemis-unifilis-testudines-podocnemididae-from-peruvian-amazon
#10
Luis L Espinoza, Omar Mertins, Gabriella S Gama, Ana C M Fernandes Patta, Patrick D Mathews
A new myxosporean species, Myxidium peruviensis n. sp., is described parasitizing the gall bladder of the yellow-spotted river turtle Podocnemis unifilis kept in captivity in an Amazonian Peruvian turtle rescue unit in the city of Iquitos, State of Loreto, Peru. The parasite was found in four of ten (40%) P. unifilis examined. The new species was characterized based on morphological and molecular phylogeny analyses. SSU rDNA sequence of the spores of M. peruviensis n. sp. resulted in 1876 nucleotides and this sequence did no match any of the Myxozoa available in the GenBank...
August 2017: Acta Tropica
https://www.readbyqxmd.com/read/28439685/histological-and-ultrastructural-study-of-myxobolus-mugchelo-parenzan-1966-with-initial-histopathology-survey-of-the-liza-ramada-host-intestine
#11
Mykola Ovcharenko, Bahram Sayyaf Dezfuli, Giuseppe Castaldelli, Mattia Lanzoni, Luisa Giari
This paper provides histological and ultrastructural data on Myxobolus mugchelo (Myxozoa), a parasite of the intestinal wall of thinlip mullet Liza ramada from the Comacchio lagoons (Northern Adriatic Sea, Italy). About 80% of the examined mullets were infected with this myxozoan. In histological sections, the plasmodia appeared rounded to ovoid and spindle shaped, measured 181.61 ± 97 × 122.79 ± 53.16 μm (mean ± standard deviation, SD) in size. Early sporogenic plasmodia were located primarily in the muscle layer where no pronounced inflammatory response was detected...
June 2017: Parasitology Research
https://www.readbyqxmd.com/read/28381233/structural-integrity-and-viability-of-fredericella-sultana-statoblasts-infected-with-tetracapsuloides-bryosalmonae-myxozoa-under-diverse-treatment-conditions
#12
Ahmed Abd-Elfattah, Mansour El-Matbouli, Gokhlesh Kumar
Fredericella sultana is an invertebrate host of Tetracapsuloides bryosalmonae, the causative agent of proliferative kidney disease in salmonids. The bryozoan produces seed-like statoblasts to facilitate its persistence during unfavourable conditions. Statoblasts from infected bryozoans can harbor T. bryosalmonae and give rise to infected bryozoan colonies when conditions improve. We aimed in the present study to evaluate the integrity and viability of T. bryosalmonae-infected statoblasts after a range of harsh treatment conditions...
April 5, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28333349/the-multipartite-mitochondrial-genome-of-enteromyxum-leei-myxozoa-eight-fast-evolving-megacircles
#13
Dayana Yahalomi, Michal Haddas-Sasson, Nimrod D Rubinstein, Tamar Feldstein, Arik Diamant, Dorothée Huchon
Myxozoans are a large group of poorly characterized cnidarian parasites. To gain further insight into their evolution, we sequenced the mitochondrial (mt) genome of Enteromyxum leei and reevaluate the mt genome structure of Kudoa iwatai. Although the typical animal mt genome is a compact, 13-25 kb, circular chromosome, the mt genome of E. leei was found to be fragmented into eight circular chromosomes of ∼23 kb, making it the largest described animal mt genome. Each chromosome was found to harbor a large noncoding region (∼15 kb), nearly identical between chromosomes...
July 1, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28327882/new-morphological-data-and-molecular-diagnostic-of-henneguya-friderici-myxozoa-myxobolidae-a-parasite-of-leporinus-friderici-osteichthyes-anostomidae-from-southeastern-brazil
#14
Letícia Poblete Vidal, José Luis Luque
The myxozoan Henneguya friderici is a parasite of the gills, intestine, kidney and liver of Leporinus friderici, a characiform fish belonging to the family Anostomidae. Forty-two specimens of L. friderici that had been caught in the Mogi Guaçú River, state of São Paulo, were studied. Elongated white plasmodia were found in the gill filaments of 10 host specimens (24%). The mature spores had an ellipsoidal body with polar capsules of equal size and caudal length greater than body length. This study also described 18S rDNA sequencing of H...
January 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28322722/in-vitro-effect-of-two-commercial-anti-coccidial-drugs-against-myxospores-of-kudoa-septempunctata-genotype-st3-myxozoa-multivalvulida
#15
Meejung Ahn, Seunghwan Won, Bongjo Kang, Po Gong, Eunho Yoo, Subramanian Dharaneedharan, Yeounghwan Jang
Kudoa septempunctata (Myxozoa: Multivalvulida) myxospores infect the trunk muscles of olive flounder (Paralichthys olivaceus). In this study, two popular commercially formulated anti-coccidial drugs (amprolium hydrochloride and toltrazuril) were serially diluted and incubated with purified mature Kudoa septempunctata myxospores. The viability of K. septempunctata spores was determined after a 2-day incubation followed by Hoechst 33342 and propidium iodide staining, and scanning electron microscopy. Amprolium hydrochloride significantly decreased spore viability (18% of control) at a concentration of 920 μg/mL, whereas toltrazuril showed almost no effect (83% of control)...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28316405/description-of-three-new-species-of-the-genus-myxobolus-infecting-carp-fishes-of-india
#16
Subarna Ghosh, P K Bandyopadhyay
Myxobolus Bütschli, 1882 (Myxozoa, Myxosporea, Bivalvulida, Myxobolidae) is an important parasitic protozoan of freshwater fishes reported from almost all over the world. The severity of infection may lead to mortality of the host fish. The present paper deals with the description of three new species of Myxobolus Bütschli, 1882, Myxobolus sonarpurensis sp. nov., Myxobolus elongatum sp. nov. and Myxobolus petalum sp. nov. from a freshwater minor carp Labeo bata (Hamilton, 1822) and major carp Labeo rohita (Hamilton, 1822) respectively from West Bengal, India...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316395/morphotaxonomical-description-of-three-new-species-of-myxobolus-b%C3%A3-tschli-1882-myxozoa-myxosporea-bivalvulida-from-edible-freshwater-fishes-of-west-bengal-india
#17
Subarna Ghosh, P K Bandyopadhyay
Three new species of Myxobolus are described from the mucous membrane around gill lamellae of carps of West Bengal. The new species have been named as M. muralidharani sp. n., M. nilimae sp. n. from Labeo rohita, and M. harpreetae sp. n. from Labeo bata respectively. Spores of M. muralidharani sp. n. measured 13.84 ± 0.049 (13-14) × 4.95-6 (5.35) µm, with two elongated equal sized polar capsules. Spores of M. nilimae sp. n. measured 15.9-17.1 (16.65) µm × 6.2-7.5 (6.9) µm, with two equal petal shaped polar capsules, 9...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28291603/proliferative-kidney-disease-in-rainbow-trout-oncorhynchus-mykiss-under-intensive-breeding-conditions-pathogenesis-and-haematological-and-immune-parameters
#18
Miroslava Palikova, Ivana Papezikova, Zdenka Markova, Stanislav Navratil, Jan Mares, Lukas Mares, Libor Vojtek, Pavel Hyrsl, Eva Jelinkova, Heike Schmidt-Posthaus
Proliferative kidney disease (PKD) is an endoparasitic disease of salmonid fish caused by Tetracapsuloides bryosalmonae (Myxozoa: Malacosporea). This study presents a comprehensive view on PKD development in rainbow trout (Oncorhynchus mykiss) reared at an intensive fish breeding facility, with focus on mortality, pathology/histopathology, haematological findings and immune functions. Diseased and reference fish were sampled monthly and time course of natural infection was followed up from the onset of clinical signs (September 2014) to full recovery (January 2015)...
April 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28230483/studying-microparasites-of-the-phyla-myxozoa-and-microsporidia-infecting-fish-the-ultrastructural-contribution
#19
Sónia Rocha, Graça Casal, Carlos Azevedo
No abstract text is available yet for this article.
January 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28148906/myxobolus-taibaiensis-sp-n-myxozoa-myxosporea-infecting-the-intestinal-wall-of-common-carp-cyprinus-carpio-linnaeus-in-china
#20
Xinhua Liu, Congjie Hua, Qianqian Zhang, Yuanli Zhao, Dong Zhang, Jinyong Zhang
Myxobolus taibaiensis sp. n. was found in the inner intestinal wall of common carp, Cyprinus carpio Linnaeus, during the investigation of fish parasite fauna in Lake Taibai, located in the middle reach of the Yangtze River, China. The whitish ellipsoidal plasmodia, up to 2.9 mm long and 1.7 mm wide, developed in the circular muscle layer of the intestinal wall and produced significant compression into adjacent tissues, but no significant inflammatory responses were observed against this infection. Mature spores are oval in frontal view and lemon-like in lateral and apical view, averaging 10...
January 10, 2017: Folia Parasitologica
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