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Morphological and SEM identification for mixed parasitic infestations in Nemipterus japonicus from the Western Gulf of Suez, Red Sea, Egypt

Authors :
Mai Nashaat
Manal M. Sabrah
Amgad M. Shaaban
Hanan M. Osman
Yasser A. Geneid
Esraa E. AbouElmaaty
Source :
Egyptian Journal of Aquatic Research, Vol 49, Iss 1, Pp 67-73 (2023)
Publication Year :
2023
Publisher :
Elsevier, 2023.

Abstract

A total number of 100 Nemipterus japonicus was collected randomly from the Western Gulf of Suez, Red Sea, Egypt from September to April 2021. After external and internal examinations, two species of parasites were found. The first species was Mothocya melanosticta isopods (both sexes) with a prevalence of 52% and attached externally to the gills and inside the buccal cavity. The second species, Hysterothylacium aduncum nematodes that was found in three types of distributions in 53 fishes. Firstly, adults were found in the gastrointestinal (GI) tract with a high prevalence of about 58%. Secondly, larval stages were found in 52 fishes with a high prevalence of about 57%. Thirdly, adults and larvae were found mixed together in 91 fishes with a high prevalence of 91% inside the GI tract of the same host. There was mixed infestations with M. melanosticta and H. aduncum with a percentage of 51% with several observed signs on the infested fishes. To determine the correct identification of detected parasites, both species were subjected to morphological and electron microscopic examination. Based on the present findings, further studies are recommended on the host-parasites relationship.

Details

Language :
English
ISSN :
16874285
Volume :
49
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Egyptian Journal of Aquatic Research
Publication Type :
Academic Journal
Accession number :
edsdoj.2fb3b159cc27418fb707a87c2de837cb
Document Type :
article
Full Text :
https://doi.org/10.1016/j.ejar.2022.10.004