1994-2021. All Rights Reserved. Online Journal of Veterinary Research. You may not store these pages in any form except for your own personal use. All other usage or distribution is illegal under international copyright treaties. Permission to use any of these pages in any other way besides the before mentioned must be gained in writing from the publisher. This article is exclusively copyrighted in its entirety to OJVR publications. This article may be copied once but may not be, reproduced or re-transmitted without the express permission of the editors.
Online Journal of Veterinary Research©
Volume 23 (10):1038-1043, 2019.
Seasonal and histological impacts of Myxobouls niloticus on Labeo niloticus Nile carp.
Abdel-Baki AS1 Sakran TH1, Fayed H2, Zayed E1
1Zoology Department(s), Faculty of Science(s), Beni-Suef University, 2Cairo University, Egypt
Abdel-Baki AS ,Sakran TH, Fayed H, Zayed E., Seasonal and histological impacts of Myxobouls niloticus on Labeo niloticus Nile carp. Onl J Vet Res., 23 (10):1038-1043, 2019. We report effect of season on prevalence of myxobouls niloticus on labeo nilocitus carp in the Nile river, Egypt. Fish (n=86) were collected monthly for 12 months. We found overall prevalence of ~21% Myxobolus niloticus during winter ~14%, spring 41%, summer 13% and autumn 13%. Mean myxospore morphology length and width of cysts was determined from calibrated ocular photomicroscope. Plasmodia were collected from tail, fin rays and operculum. Fish were infested with 1 to 7 cysts measuring 0.8mm wide and 0.6mm long. Spores were oval to sub-spherical 12.5 ± 0.5nm long by 9.9± 0.3nm wide. Plasmodia were located on the outer surface of the hemi-segments under basal lamina associated with connective tissue cells forming chondrifying collagen. However, we found no morphological changes in the cartilaginous structure of the hemi-segments and no inflammatory reaction. The infection caused only mild fin lesions.
Key-Words: Myxobouls niloticus, Labeo niloticus, Nile, carp, prevalence.