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2017 | 63 | 3 |
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The light microscopy and ultrastructural characteristics of Myxobolus naffari (Myxosporea, Myxobolidae) infecting the Nile carp Labeo niloticus (Cyprinidae) and its histological impact

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Języki publikacji
EN
Abstrakty
EN
During a survey of myxosporean parasites infecting freshwater fishes from the River Nile at Giza Governorates, Egypt between March and September 2016, nine out of 30 specimens of the Nile carp Labeo niloticus (Cyprinidae) were found to be naturally infected with Myxobolus naffari (Myxobolidae). Small macroscopic plasmodia appeared embedded in the host gill tissue accompanied with fusion of the gill epithelia, and atrophy was observed at the site of infection. The host reaction was manifested by the encapsulation of the plasmodia with a thick layer of connective tissue. The plasmodia appeared as white, elongated rods between gill filaments with an intensity ranging from three to eight cysts/fish. The average dimensions of plasmodia were 1.2–2.0 (1.8 ± 0.2) mm long × 0.4–0.7 (0.6 ± 0.2) mm wide. The spores were oval, reaching 9.56–11.2 (10.2 ± 0.2) μm long and 6.5–7.7 (7.0 ± 0.4) μm wide with two equal-sized polar capsules regularly arranged at the anterior pole of each spore. They were 4.51–5.5 (5.1 ± 0.4) μm in length and 1.5–2.0 (1.7 ± 0.2) μm in width. Histological, semi-thin sections were taken through parasite plasmodia and transmission electron microscopic examination of ultrathin sections was performed to describe the developmental stages of the recorded parasite within the host fish.
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-
Rocznik
Tom
63
Numer
3
Opis fizyczny
p.159-156,fig.,ref.
Twórcy
autor
  • Department of Biology, College of Science for Woman, University of Baghdad, Mohamed Al-Qasim St., 10071, Baghdad, Iraq
  • Ministry of Education, Al Anbar Governorate, Bab Al-Sharqi St., 31001, Al Anbar, Iraq
autor
  • Department of Zoology, Faculty of Science, Cairo University, Al Gamaa St., 12613, Cairo, Egypt
autor
  • Department of Zoology, Faculty of Science, Cairo University, Al Gamaa St., 12613, Cairo, Egypt
autor
  • Department of Biology, College of Science, Al Baha University, King Abdulaziz St., 65431, Al Baha, Saudi Arabia
autor
  • Department of Zoology, Faculty of Science, Cairo University, Al Gamaa St., 12613, Cairo, Egypt
Bibliografia
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Typ dokumentu
Bibliografia
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