Myxobolus episquamalis infection in farmed flathead grey mullet Mugil cephalus L. and thin-lipped mullet Liza ramada
- 151 Downloads
Egypt is the largest producer of farmed mullets worldwide. The mullet seeds are collected from natural waters at the north and northern east of Egypt. Thus, the occurrence of parasitic diseases is relatively high even after being stocked in aquaculture facilities. The current study was conducted on a fish farm located at the coastal area of the Suez Canal region, Egypt. Farmed flathead grey mullet (Mugil cephalus L.) and thin-lipped grey mullet (Liza ramada) showed pinkish-white granular cysts on their body surfaces that measured approximately 5 mm (4–6 mm) in width and 7 mm (5–9 mm) in length and contained a milky coloured exudate. The proximal portion of the fins and apical part of the scales were the only sites of infection. These cysts are randomly scattered throughout the fish body surface. No mortalities were detected among moribund mullets, but these cysts make the fish unsightly, causing commercial rejection. The overall prevalence of infection was 40%. Giemsa-stained wet smears initially indicated that the spores were of Myxobolus species. Subsequently, the phylogenetic analysis of the 18S rRNA gene confirmed the identification of spores as being those of Myxobolus episquamalis. Furthermore, amprolium-salinomycin mixture, which has an established track record for treating myxozoan infections in multiple fish species, was successfully tested in a large-scale field trial. Moribund mullets displayed significant reduction in myxosporean infection following treatment with amprolium-salinomycin mixture. To the best of our knowledge, this is the first report describing the detection of M. episquamalis in farmed flathead grey mullet (Mugil cephalus L.) and thin-lipped grey mullet (Liza ramada) collected from fish farms in the Suez Canal, Egypt.
KeywordsFlathead grey mullet Mugil cephalus Thin-lipped grey mulle Liza ramada Myxobolus episquamalis Scales Granular cyst–like plasmodia Suez Canal
The authors are grateful to the field veterinarians Mohamed Idrees, Mohamed Elzoghby, Mohamed Shawqy and Moustafa Fathallah for their valuable support during sample collection and processing. Many thanks are also expressed to Dr. NohaElbanna, an assistant lecturer of Fish Diseases at the Suez Canal Fish Farming Technology Institute, for her kind assistance during the initial stages of the clinical and laboratory examinations.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All applicable international, national and/or institutional guidelines for the care and use of animals were followed by the authors.
- Abdelsalam M, Abdel-Gaber R, Mahmoud MA, Mahdy OA, Khafaga NI, Warda M (2016) Morphological, molecular and pathological appraisal of Callitetrarhynchus gracilis plerocerci (Lacistorhynchidae) infecting Atlantic little tunny (Euthynnus alletteratus) in Southeastern Mediterranean. J Adv Res 7:317–326. https://doi.org/10.1016/j.jare.2015.07.004 CrossRefPubMedGoogle Scholar
- Asejeva NL (1994) Detection on Myxosoma acutum in pilengas from Japan Sea Izvestiya TINRO 117:157–158Google Scholar
- Athanassopoulou F, Karagouni E, Dotsika E, Ragias V, Tavla J, Christofilloyanis P, Vatsos I (2004) Efficacy and toxicity of orally administrated anti-coccidial drugs for innovative treatments of Myxobolus sp. infection in Puntazzo puntazzo. Dis Aquat Org 62:217–226. https://doi.org/10.3354/dao062217 CrossRefPubMedGoogle Scholar
- Bardach JE, Ryther JH, McLarney WO (1974) Aquaculture: the farming and husbandry of freshwater and marine organisms. WileyGoogle Scholar
- Cho J, Bum, Kwon SR, Lee MK, Huh MD, Kim KH (2006) Myxobolus episquamalis (Myxosporea: Myxobolidae) on the scales of wild mullet, Mugil cephalus L, in Korea. J Fish Pathol 19:1–6Google Scholar
- Crosetti D, Blaber SJM (2015) Biology, ecology and culture of grey mullets (Mugilidae). CRC PressGoogle Scholar
- Diamanka A, Fall M, Diebakate C, Faye N, Toguebaye BS (2008) Identification of Myxobolus episquamalis (Myxozoa, Myxobolidae) in flathead mullet Mugil cephalus (Pisces, Teleostei, Mugilidae) from the coast of Senegal (eastern tropical Atlantic Ocean). Acta Adriat 49:19–23Google Scholar
- Eissa AE et al (2015) First record of Vibrio vulnificus/Anisakis pegreffi concurrent infection in black scorpionfish (Scorpaena porcus) from the South Mediterranean Basin. Res J Pharm Biol Chem Sci 6:1537–1548Google Scholar
- GAFRD (2016) Fish Statistics Year Book, 26th edn. General Authority for Fish Resources Development, Ministry for Agriculture and Land Reclamation, CairoGoogle Scholar
- Iskov MP (1989) Myxosporidia (Myxosporea). In: Markevitch AP, Schulman SS (eds) Fauna Ukrainy, vol 37, vol 4. Naukova Dumka, Kiev, p 212Google Scholar
- Kazarnikova AV, Strizhakova TV, Bortnikov ES, Beraldo P, Byadgi OV, Galeotti M (2018) Morphologic characteristic and PCR-identification of Myxobolus episquamalis egusa, Maeno & Sorimachi, 1990, In Grey Mullet Mugil cephalus (Linnaeus, 1758) from Kerch Pre-Strait Area of The Black Sea. Sci South Russ 14:88–97. https://doi.org/10.23885/2500-0640-2018-14-2-88-97 CrossRefGoogle Scholar
- Liu Y, Whipps CM, Gu ZM, Zeng LB (2010) Myxobolus turpisrotundus (Myxosporea: Bivalvulida) spores with caudal appendages: investigating the validity of the genus Henneguya with morphological and molecular evidence. Parasitol Res 107:699–706. https://doi.org/10.1007/s00436-010-1924-9 CrossRefPubMedGoogle Scholar
- Lom J, Arthur JR (1989) A guideline for the preparation of species descriptions in Myxosporea. J Fish Dis 12:151–156. https://doi.org/10.1111/j.1365-2761.1989.tb00287.x CrossRefGoogle Scholar
- Menezes J (1984) A case of massive cutaneous myxobolosis in wild mullet Bol lnst Nac lnvest Pescas (Lisboa) 12Google Scholar
- Özak AA, Demİrkale İ, Cengİzler İ (2012) Two new records of Myxobolus Bütschli, 1882 (Myxozoa, Myxosporea, Myxobolidae) species from Turkey Turkish. J Zool 36:191–199Google Scholar
- Pulsford A, Matthews RA (1982) An ultrastructural study of Myxobolus exlguus Thelohan, 1895 (Myxosporea) from grey mullet, Crenimugil labrosus (Risso). J Fish Dis 5:509–526. https://doi.org/10.1111/j.1365-2761.1982.tb00510.x CrossRefGoogle Scholar
- Sadek S (2015) Culture of Mugilidae in Egypt. In: Crosetti D, Blaber SJM (eds) Biology, Ecology and Culture of Grey Mullets (Mugilidae). CRC Press, Boca Raton, pp 501–513Google Scholar
- Sadek S, Mires D (2000) Capture of wild finfish fry in Mediterranean coastal areas and possible impact on aquaculture development and marine genetic resources The Israeli. J Aquac 52:77–88Google Scholar
- Saleh M (2008) Capture-based aquaculture of mullets in Egypt. In: Lovatelli A, Holthus PF (eds) Capture-based Aquaculture: Global Overview. Food and Agriculture Organization of the United Nations, FAO Fisheries Technical Paper. No. 508. FAO, Rome, pp 109–126Google Scholar
- Shvedko MB, Aseev NL (2008) Parasites on mullets from southern far east Russia. In: The Scientific Conference on the Current Status of Aquatic Bio Resources, Vladivostok, pp 316–320Google Scholar
- Sogin ML (1990) Amplification of ribosomal RNA genes for molecular evolution studies. In: Innis MA, Gelfand DH, Sninsky JJ, White TJ (eds) PCR Protocols: A Guide to Methods and Applications. Academic Press, Inc, San Diego, pp 307–314Google Scholar
- Suvarna KS, Layton C, Bancroft JD (2018) Bancroft’s theory and practice of histological techniques e-book. Elsevier Health SciencesGoogle Scholar
- U-Taynapun K, Penprapai N, Bangrak P, Mekata T, Itami T, Tantikitti C (2011) Myxobolus supamattayai n. sp. (Myxosporea: Myxobolidae) from Thailand parasitizing the scale pellicle of wild mullet (Valamugil seheli). Parasitol Res 109:81–91. https://doi.org/10.1007/s00436-010-2223-1 CrossRefPubMedGoogle Scholar
- Yambot AV, Lopez EA (1997) Gill parasite, Lamproglena monody, Capart, infecting the Nile tilapia, Oreochromis niloticus L., cultured in Philippines. In: Flegel TW, IH MR (eds) Diseases in Asian Aquaculture III Proceedings of the Third Symposium on Diseases in Asian Aquaculture, Manila. Fish Health Section, Asian Fisheries SocietyGoogle Scholar