NDLI: Morphological re-description and molecular characterization of Kudoa pagrusi (Myxosporea: Multivalvulida) infecting the heart muscles of the common sea bream fish Pagrus pagrus (Perciformes: Sparidae) from the Red Sea, Egypt

Content Provider	Springer Nature Link
Author	Abdel Ghaffar, Fathy Abdel Gaber, Rewaida Maher, Sherein Quraishy, Saleh Mehlhorn, Heinz
Copyright Year	2016
Abstract	In the present study, 100 samples of different sizes of the common sea bream fish Pagrus pagrus were collected from the Egyptian water along the Gulf of Suez, Red Sea and examined for the prevalence of myxosporidian parasites in general and Kudoa spp. in particular. Fish samples were thoroughly externally examined. After dissection, all the internal organs were removed and examined. A total of 60 out of 100 fish specimens were found to be infected with Kudoa stages. Parasitic infection was restricted to the heart muscles of the examined fish. None of the other organs was found to be infected. Macroscopic cysts (plasmodia) heavily infested the different parts of the heart muscles. Each plasmodium measured 1.2–2.5 (1.53 ± 0.2) mm × 0.63–0.80 (0.65 ± 0.2) mm. Mature spores are quadratic in shape in the apical view showing four equal valves and four symmetrical polar capsules. Fresh spores were 5.0–7.1 (5.7 ± 0.2) μm long × 5.4–8.5 (6.1 ± 0.3) μm wide. On the basis of spore morphology, the present species was identified as Kudoa pagrusi. Morphometric characterization revealed that the relatively small size of this Kudoa species was the distinctive feature that separates it from all previously described species. Molecular analysis based on small subunit ribosomal DNA (SSU rDNA) sequences revealed that the highest percentage of identity was observed with K. scomberomori and followed by K. shiomitsui, K. hypoepicarclialis, K. amamiensis, and K. kenti. The kudoid spores showed morphometric variations to some extents but had essentially identical nucleotide sequences of the SSU rDNA gene sequences closest to those of K. scomberomori and K. shiomitsui recorded from elasmobranchs in the Indo-Pacific Ocean. The present findings support the identification of an ancestral marine origin of the present Kudoa species.
Starting Page	3175
Ending Page	3184
Page Count	10
File Format	PDF
ISSN	09320113
Journal	Parasitology Research
Volume Number	115
Issue Number	8
e-ISSN	14321955
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-05-05
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Kudoa spp Marine fish parasites Pagrus pagrus Morphology Molecular characterization Medical Microbiology Microbiology Immunology
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Veterinary Parasitology Insect Science

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Light and electron microscopic studies on Kudoa pagrusi sp. n. (Myxosporea: Multivalvulida) infecting the heart of sea bream Pagrus pagrus (L.) from the Red Sea

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