alexa Caligus elongatus and Photobacterium damselae subsp pis
ISSN: 2155-9546

Journal of Aquaculture Research & Development
Open Access

Like us on:
OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article

Caligus elongatus and Photobacterium damselae subsp piscicida Concomitant Infections Affecting Broodstock European Seabass, Dicentrarchus labrax, with Special Reference to Histopathological Responses

Elgendy MY1*, Abdelsalam M2*, Moustafa M2, Kenawy AM1 and Seida A3
1Department of Hydrobiology, Veterinary Research Division, National Research Centre, 12622 Dokki, Giza, Egypt
2Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
3a-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
3b-Department of Microbiology and Immunology, Faculty of Veterinary Medicine, Cairo University, Giza Egypt
Corresponding Authors : Elgendy MY
Department of Hydrobiology
National Research Centre
12622 Dokki, Giza, Egypt
Tel: 00201116893637
E-mail: [email protected]
  Abdelsalam M
Department of Fish Diseases and Management
Faculty of Veterinary Medicine, Cairo University
E-mail: [email protected]
Received: March 29, 2015; Accepted: April 15, 2015; Published: May 25, 2015
Citation: Elgendy MY, Abdelsalam M, Moustafa M, Kenawy AM, Seida A (2015) Caligus elongatus and Photobacterium damselae subsp piscicida Concomitant Infections Affecting Broodstock European Seabass, Dicentrarchus Labrax, with Special Reference to Histopathological Responses. J quac Res Development 6:346. doi:10.4172/2155-9546.1000346
Copyright: ©2015 Elgendy MY, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Related article at
DownloadPubmed DownloadScholar Google


Caligus elongatus and Photobacterium damsela subsp piscicida are pathogens of serious infections in European seabass, Dicentrarchus labrax. In this study, both agents were concomitantly isolated from moribund broodstock European seabass cultured within the hatchery unit at El-Max Research Station (NIOF), Alexandria governorate, Egypt. Externally, fish were heavily infested with Caligus elongatus ectoparasitic copepods. The overall prevalence, mean intensity and mean abundance of C. elongatus on examined fish were 92.3%, 23.3 and 21.5; respectively. Majority of samples noticed sever haemorrhages on the external body surface and fins. Internally, moribund fish showed characteristic whitish nodules and extensive adhesions of visceral organs. 88.46% of investigated fish were concurrently found to be infected with P. damsela subsp piscicida. No other bacterial species were detected. P. damsela subsp piscicida was also isolated from C. elongatus infesting clinically diseased fish. All P. damsela subsp piscicida isolates were confirmed by sequencing of the16S rRNA gene. Microscopically, multiple granulomas were regularly observed in haemopoietic organs. Our results as a whole indicate that C. elongatus may serve as a potential vector for P. damsela subsp piscicida and possibly enhance photobacteriosis dissemination among cohabitant fish, thus suggesting the desirability of redesigning the protocols presently used for microbial recognition during fish epidemiological studies to improve fish health.

Share This Page

Additional Info

Loading Please wait..
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version