Ultrastructure and host parasite relationships of Kudoa pagrusi (Myxozoa) infecting the heart muscles of sea bream Pagrus pagrus (L.) from the Red Sea

Abdel-Ghaffar, Fathy; Bashtar, Abdel-Rahman; Mehlhorn, Heinz; Al-Rasheid, Khaled A. S.; Al-Olayan, Ebtsam; Abdel‐Baki, Abdel‐Azeem S.; Morsy, Kareem

doi:10.1007/s00436-009-1660-1

Cited by 22 publications

(5 citation statements)

References 33 publications

(56 reference statements)

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“…As a result of the increased needs for protein production all over the world, fish industry is now considered as one of the priorities of human tasks (Abdel-Ghaffar et al 2009, 2011, 2012bMorsy 2010). Members of the phylum Myxozoa are obligate, sporeforming parasites infecting ectothermic vertebrates, most of them are fish (Post 1987;Abdel-Ghaffar et al 2012) with a few representatives of amphibians, reptiles, and some invertebrates (Lom and Dykova 1992a, b).…”

Section: Introductionmentioning

confidence: 98%

“…Meanwhile, histozoic species infect various tissues, mostly intercellularly and rarely intracellular trophozoites of them are immobile and contain usually large number of spores of two types, myxospores and actinospores (Post 1987 andDykova 1992b;Adriano et al 2005). Myxosporea infecting Egyptian fish is a group of parasites which is considered as the major harmful cause of myxosporidiosis which is the major harmful agent of fish life (El-Mansy and Bashtar 2002;Abdel-Ghaffar et al 2009, 2011Morsy 2010). River Nile fish in Egypt were examined for myxosporean parasites in different localities by some authors (Fahmy et al 1975;Imam et al 1987;Abdel-Ghaffar et al 1995a;Abdel-Ghaffar et al 1998;Ali 1998Ali , 1999Ali , 2000Ali 1999).…”

Section: Introductionmentioning

confidence: 98%

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Twelve myxosporean species of the family Myxobolidae infecting freshwater fishes of the River Nile, Egypt, with the description of four novel species

Abdel-Ghaffar

Morsy

El-Ganainy³

et al. 2015

Parasitol Res

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Myxosporidian parasites infecting fish are very dangerous parasites causing severe damage to a large number of economically important fishes especially in aquaculture. A survey of myxosporean parasites infecting four species of fishes from the River Nile in Egypt is conducted. One hundred and ninety-five out of 316 fish specimens with a percentage of 61.7% were found to be naturally infected with these parasites. Light microscopic examination of different tissues revealed the presence of 12 myxosporean species belonging to the family Myxobolidae. Four of the identified species are novel and the other eight species are redescribed. Myxidium sp.nov. a coelozoic species inhabiting the gallbladder of Labeo niloticus with its mature spores float free in bile was detected. These spores possess a fusiform, straight, or slightly crescentic shape with less pointed ends and two equal polar capsules. Three novel histozoic Myxobolus species infecting Oreochromis niloticus were identified. Myxobolus sp(1).nov. is a species inhabiting kidney tissue with ovoid spores exhibiting a small intercapsular appendix. Myxobolus sp(2).nov. and Myxobolus sp(3).nov. recovered from kidney and intestinal tissues. Spores of Myxobolus sp(2).nov. are elliptical in shape with an anterior end wider than posterior one. Their two polar capsules are ovoid to pyriform occupied nearly the first third of the spore body. Spores of Myxobolus sp(3).nov. are broader than long with nearly rounded or ovoid two polar capsules. Eight species of the recovered myxosporean parasites are redescribed, Myxobolus niloticus Fahmy et al., 1971 from pectoral, dorsal, and tail fins of L. niloticus, Henneguya suprabranchiae Landsberg, 1987, and Henneguya branchialis Ashmawy et al., 1989 are recovered from the gills and suprabranchial organ of the catfish Clarias gariepinus, respectively, Myxobolus naffari Abdel-Ghaffar et al., 1998 and Myxobolus imami Ali et al., 2002 are found in the kidney of Barbus bynni and L. niloticus, Myxobolus caudatus Ali et al. & Parasitol Res (2002) from Tail fin of B. bynni, Myxobolus fomenai Abdel-Ghaffar et al., 2008 from kidney and intestinal tissues of O. niloticus, Thelohanellus niloticus Abdel-Ghaffar et al., 2012 are observed in the gills of L. niloticus.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Twelve myxosporean species of the family Myxobolidae infecting freshwater fishes of the River Nile, Egypt, with the description of four novel species

Abdel-Ghaffar

Morsy

El-Ganainy³

et al. 2015

Parasitol Res

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“…Parasitic infection has been raised one of the most important problems against fish breeding and production at commercial scales (Abdel-Ghaffar et al, 2009). Furthermore ,parasites act as predisposing factors for other infection through a weakening of the host`s immune system thereby increasing their susceptibility to the secondary infections, resulting in the nutritive devaluation of fish and subsequent economic losses (Onyedineke et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Gastrointestinal Parasites Infecting Fish (Clarias Gariepinus) in Qena Governorate

El-Seify¹,

El‐Dakhly²,

Metwally³

et al. 2017

Kafrelsheikh Veterinary Medical Journal

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Parasites of fish are of concern since they often produce a weakening of the host`s immune system thereby increasing their susceptibility to the secondary infections, resulting in the nutritive devaluation of fish ,compete for food, depriving fish of essential nutrients, inhibiting growth leading to morbidity and mortality and subsequent economic losses. Few data has been reported to identify major parasite of fish in Qena Governorate, Egypt. Accordingly, the study aimed to estimate the prevalence of gastrointestinal parasite infecting fish. Afield study was conducted during the period from the beginning of January 2015 to the end of December 2016.A total of 144 Clarias gariepinus (Carmoot) fish samples were collected either alive from fishermen or fresh as possible from fish markets at Qena Governorate for parasitological studies. Parasite collected and prepared then identified under the microscope. Out of 144 examined fish 84 (58.3%) samples were infected with different gastrointestinal parasites. The obtained results found that the most frequent parasitic infection among examined fish was cstodes with an infection rate of (35.4%) ,followed by trematodes infection (27%), while the lowest infection rate, were recorded in nematodes infection(16.7%),Regarding to the seasonal prevalence of the recovered parasites, we concluded that the highest rate of parasite infection was observed during Spring season (83.3%), followed by Winter (66.7%), Summer recorded (50%) and Autumn season which represented the lowest rate of infection (33.3%). The most common species of cestodes were Monobothrium sp which recorded the highest infection rate (27.8%) and Polyonchobothrium clarias (5.6%), followed by trematode species Orientocreadium batrachoides (24.3%) and nematode species Paracamallanus cyathopharynx (10.4%) and Procamallanus laevionchus (5.6%).

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“…Recently, the combination of spore morphology, ultrastructure, host, and tissue specificity with molecular biological methods are principally accepted for identification of a new myxosporean species and redescription of inadequately described species (Abdel-Baki et al 2015;Abdel-Ghaffar et al 2008, 2009Morsy et al 2012;Székely et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Supplementary studies and the first molecular data on Myxobolus scardinii Reuss, 1906 (Myxozoa: Myxosporea) infecting the gill filaments of rudd, Scardinius erythrophthalmus (L.)

2015

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Within the present study, we offer new information on the morphology, histopathology, and 18S ribosomal DNA (rDNA) sequence of Myxobolus scardinii to supplement and revise the original description of Reuss (Bull Acad Imp Sci St-Pétersbourg, V Serie, XXV, No. 3: 199-205, 1906). M. scardinii was found infecting the gills of 6 of 125 specimens (4.8%) of Scardinius erythrophthalmus from northern Turkey. Large mature plasmodia, whitish, spherical, or ellipsoidal, measuring 0.9-1.0 mm in diameter, macroscopically occurred in the gills. Histopathological examination indicated that development of the cyst-like plasmodia was intrafilamental-vascular type. Mature spores are oval or shortly ellipsoidal. The spores are 12.1 ± 0.2 (11.5-12.6) μm long, 8.9 ± 0.3 (8.4-9.2) μm wide, and 6.1 ± 0.3 (5.9-6.2) μm thick. The two polar capsules are equal in size, 4.8 ± 0.2 (4.7-5.1) μm long and 2.8 ± 0.2 (2.7-3.1) μm wide, and are long pyriform in shape. A well-developed intercapsular appendix was found in the fresh spores. In this study, a specific gill myxosporean of S. erythrophthalmus, M. scardinii the identity of which was confirmed by careful morphological and histopathological examination, was sequenced with its 18S rDNA sequence for the first time and submitted to Genbank database (accession number KJ562362). Phylogenetic analysis of the 18S rDNA gene revealed that M. scardinii had the closest similarity to M. muelleri and M. bramae. This is the first molecular data for the validity of M. scardinii in S. erythrophthalmus. This new valid genetic data (KJ562362) has been used to establish phylogenetic relationships with other similar gills Myxobolus species from Eurasia.

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Ultrastructure and host parasite relationships of Kudoa pagrusi (Myxozoa) infecting the heart muscles of sea bream Pagrus pagrus (L.) from the Red Sea

Cited by 22 publications

References 33 publications

Twelve myxosporean species of the family Myxobolidae infecting freshwater fishes of the River Nile, Egypt, with the description of four novel species

Twelve myxosporean species of the family Myxobolidae infecting freshwater fishes of the River Nile, Egypt, with the description of four novel species

Prevalence of Gastrointestinal Parasites Infecting Fish (Clarias Gariepinus) in Qena Governorate

Supplementary studies and the first molecular data on Myxobolus scardinii Reuss, 1906 (Myxozoa: Myxosporea) infecting the gill filaments of rudd, Scardinius erythrophthalmus (L.)

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