دورية أكاديمية
The record of Vannella species (Vannellidae, Discosea, Amoebozoa) from freshwater sources in Dakahlyia Governorate, Egypt.
| العنوان: | The record of Vannella species (Vannellidae, Discosea, Amoebozoa) from freshwater sources in Dakahlyia Governorate, Egypt. |
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| المؤلفون: | Marzouk AM; Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt., Mashaly MI; Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt. dr.moh_mashaly@mans.edu.eg., Reda ES; Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt., El-Naggar MM; Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt. |
| المصدر: | Archives of microbiology [Arch Microbiol] 2024 Feb 20; Vol. 206 (3), pp. 113. Date of Electronic Publication: 2024 Feb 20. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 0410427 Publication Model: Electronic Cited Medium: Internet ISSN: 1432-072X (Electronic) Linking ISSN: 03028933 NLM ISO Abbreviation: Arch Microbiol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Berlin, New York, Springer-Verlag. |
| مواضيع طبية MeSH: | Fresh Water* , Amoebozoa*, Egypt ; Rivers ; Water |
| مستخلص: | The River Nile is the main source of fresh water in Egypt, where its water is used for irrigation, drinking, fisheries, industrial uses, and recreation. For sustainable utilization of the River Nile and its branches in the Nile Delta region, it is necessary to monitor regular investigation for the biodiversity of protozoan fauna in the Damietta branch and other freshwater canals in Dakahlyia Governorate. Water samples were collected monthly from different water sources, for 1 year, and examined for protozoans, using phase-contrast microscopy and recorded video films, The genus Vannella Bovee 1965 is recorded for the first time in four freshwater localities: Demietta branch of the River Nile, Mansouria Canal, Bouhia Canal, and Bahr El-Saghir Canal. A detailed morphological description with a brief report of their locomotion has been given for four morphologically different Vannella species. The locomotive form of Vannella sp.1 has a long pointed posterior tail and 2 lateral posterior processes. Such a tail was absent in other Vannella species. Vannella sp.2 is unique among other recorded species, where its locomotive form possesses a long posterior rounded tail region and a frontal hyaloplasm provided with a wavy surface that forms several lobes and finger-like processes during locomotion. In addition, the hyaloplasm produces several transverse waves that vary in thickness and density. The floating form of Vannella sp.2 is of a radial type and has comparatively long hyaline pointed and spiral pseudopodia. The process of transformation of locomotive form to floating form in Vannella sp.2 has been followed up using several recorded video films. The locomotive form of Vannella sp.3 is bear-shaped, while that of Vannella sp.4 has variable shapes from semicircular to rectangular and sometimes fan-shaped. During movement in vivo, locomotive cells of all Vannella species, except Vannella sp.1, move in nearly a straight line, but there were variations in their rate of locomotion. Vannella sp.4 recorded the highest rate (6.8 µm/s), followed by Vannella sp.2 (4.5 µm/s), Vannella sp.3 (2.4 µm/s), and finally Vannella sp.1 (1.0 µm/s). Molecular studies and transmission electron microscope examinations are still needed to confirm the precise identity of each Vannella species. (© 2024. The Author(s).) |
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| فهرسة مساهمة: | Keywords: Freshwater protozoa; Morphology; River Nile; Vannellidae; Water quality |
| المشرفين على المادة: | 059QF0KO0R (Water) |
| تواريخ الأحداث: | Date Created: 20240220 Date Completed: 20240221 Latest Revision: 20240313 |
| رمز التحديث: | 20240313 |
| مُعرف محوري في PubMed: | PMC10879259 |
| DOI: | 10.1007/s00203-024-03837-4 |
| PMID: | 38376635 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 1432-072X |
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| DOI: | 10.1007/s00203-024-03837-4 |