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Salahuldeen, A., Abd El-Aziz, A., A. Gad, M., F. Abou-El Nour, M., Z. Al-Herrawy, A. (2020). Potentially pathogenic free-living amoebae in fresh and sea waters from Alexandria, Egypt. Egyptian Journal of Aquatic Biology and Fisheries, 24(6), 307-318. doi: 10.21608/ejabf.2020.116792
Amgad Salahuldeen; Ahmed Abd El-Aziz; Mahmoud A. Gad; Mouhamed F. Abou-El Nour; Ahmad Z. Al-Herrawy. "Potentially pathogenic free-living amoebae in fresh and sea waters from Alexandria, Egypt". Egyptian Journal of Aquatic Biology and Fisheries, 24, 6, 2020, 307-318. doi: 10.21608/ejabf.2020.116792
Salahuldeen, A., Abd El-Aziz, A., A. Gad, M., F. Abou-El Nour, M., Z. Al-Herrawy, A. (2020). 'Potentially pathogenic free-living amoebae in fresh and sea waters from Alexandria, Egypt', Egyptian Journal of Aquatic Biology and Fisheries, 24(6), pp. 307-318. doi: 10.21608/ejabf.2020.116792
Salahuldeen, A., Abd El-Aziz, A., A. Gad, M., F. Abou-El Nour, M., Z. Al-Herrawy, A. Potentially pathogenic free-living amoebae in fresh and sea waters from Alexandria, Egypt. Egyptian Journal of Aquatic Biology and Fisheries, 2020; 24(6): 307-318. doi: 10.21608/ejabf.2020.116792

Potentially pathogenic free-living amoebae in fresh and sea waters from Alexandria, Egypt

Article 18, Volume 24, Issue 6, September and October 2020, Page 307-318  XML PDF (803.9 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2020.116792
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Authors
Amgad Salahuldeen; Ahmed Abd El-Aziz; Mahmoud A. Gad; Mouhamed F. Abou-El Nour; Ahmad Z. Al-Herrawy
Abstract
A total of 48 samples from two different water bodies;24 from fresh and 24 from marine waters (Alexandria) were collected, filtered, cultured on non-nutrient agar, and incubated at 37ºC for the presence of potentially pathogenic FLAs. Amoebae were isolated and identified by means of their morphological characteristics of both trophic and cyst stages. After collection for one year, it was found that freshwater samples had a higher occurrence of FLAs (83.3%) than seawater samples (37.5%).  The highest occurrence percentage of FLAs was 100% in freshwater and 83.3% in seawater samples in summer, while their lowest values reached 66.7% and 16.7% in autumn Respectively. Morphological identification of these isolated amoebae revealed the presence of FLAs belonging to 5 genera namely Acanthamoeba, Naegleria, Vahlkampfia, Vermamoeba as well as Vannella.
Keywords
Potentially pathogenic free-living amoebae; Morphology; Fresh water; Sea water
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