Investigation of Some Mycotic Infections with Economic Importance in Freshwater Nile Tilapia

Eid, Hamza; AbouElatta, Mohamed; Hafez, Aml

doi:10.21608/scvmj.2017.62082

Cited by 4 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…and production of high number of motile zoospores in the water. (Eid, et al, 2017) recorded that the highest infection rate was during winter season 66.6% of Saprolegnia spp.…”

Section: Resultsmentioning

confidence: 98%

Studies on Some Oreochromis niloticus fungal Infections

Awad,

el ashram,

el asar

et al. 2021

Egyptian Journal for Aquaculture

View full text Add to dashboard Cite

Aquaculture remains one of the fastest-growing food-producing sectors and is set to play a key role in meeting the rising demand for fishery products that consider one of the cheapest sources of protein, Nile tilapia is the most economically important Freshwater Fish in Abbassa Farms and the most popular in Egypt. A total number of 100 randomly collected O. niloticus fish of different stages and different weights were obtained alive taken to lab. of fish health and management department in central lab for Aquaculture Research (El-Abbasssa), Sharkia, during the period from December 2018 to May 2019. The fish were subjected to clinical, post-mortem examination, Fungal isolation and identification revealed Saprolegnia sp., Penicillium sp., Rhodotorulla, Aspergillus niger., Fusarium sp., Aspergillus Ochraceus, Aspergillus flavus, Aspergillus tamari, Absidia sp and Aspergillus versicolor sp.And histopathological for pathogenic fungus (Saprolegnia sp.), tissue specimens were taken from suspected lesions for Histopathological examination and showed severe hyperplasia of epithelial cell covering of secondary lamella of gills, alternative area of hyperplasia of sloughing of epidermis, increase number of mucus secreting cell; severe congestion of hebatoportal vein and central vein in liver; increase numbers of MMCs in spleen; condensation of glomuler tubules with edema in Bowman's capsule in kidney.

show abstract

“…and production of high number of motile zoospores in the water. (Eid, et al, 2017) recorded that the highest infection rate was during winter season 66.6% of Saprolegnia spp.…”

Section: Resultsmentioning

confidence: 98%

Studies on Some Oreochromis niloticus fungal Infections

Awad,

el ashram,

el asar

et al. 2021

Egyptian Journal for Aquaculture

View full text Add to dashboard Cite

show abstract

“…A. niger is a common phytopathogen that infects many fruits and vegetables, such as onion, corn, and others, causing destruction, rotting, and decomposition of plant tissues [102]. Moreover, A. niger, A. flavus, A. ochraceus, A. terreus, and A. versicolor were found to cause mycotic infections in freshwater Nile tilapia (Oreochromis niloticus) [103]. Therefore, it can be concluded that if Aspergillus spp.…”

Section: Fungi and Fungus-like Microorganisms (Oomycetes)mentioning

confidence: 99%

“…Some Penicillium spp. are highly hazardous for blue tilapia (Oreochromis aureus), Nile tilapia (Oreochromis niloticus), and Indian carp (Catla catla) [103,114,115]. In addition, Shahbazian et al [116] isolated P. expansum and P. citrinum from infected eggs of rainbow trout (Oncorhynchus mykiss).…”

Section: Fungi and Fungus-like Microorganisms (Oomycetes)mentioning

confidence: 99%

See 1 more Smart Citation

Microbial Pathogens in Aquaponics Potentially Hazardous for Human Health

Dinev,

Velichkova,

Stoyanova

et al. 2023

Microorganisms

View full text Add to dashboard Cite

The union of aquaculture and hydroponics is named aquaponics—a system where microorganisms, fish and plants coexist in a water environment. Bacteria are essential in processes which are fundamental for the functioning and equilibrium of aquaponic systems. Such processes are nitrification, extraction of various macro- and micronutrients from the feed leftovers and feces, etc. However, in aquaponics there are not only beneficial, but also potentially hazardous microorganisms of fish, human, and plant origin. It is important to establish the presence of human pathogens, their way of entering the aforementioned systems, and their control in order to assess the risk to human health when consuming plants and fish grown in aquaponics. Literature analysis shows that aquaponic bacteria and yeasts are mainly pathogenic to fish and humans but rarely to plants, while most of the molds are pathogenic to humans, plants, and fish. Since the various human pathogenic bacteria and fungi found in aquaponics enter the water when proper hygiene practices are not applied and followed, if these requirements are met, aquaponic systems are a good choice for growing healthy fish and plants safe for human consumption. However, many of the aquaponic pathogens are listed in the WHO list of drug-resistant bacteria for which new antibiotics are urgently needed, making disease control by antibiotics a real challenge. Because pathogen control by conventional physical methods, chemical methods, and antibiotic treatment is potentially harmful to humans, fish, plants, and beneficial microorganisms, a biological control with antagonistic microorganisms, phytotherapy, bacteriophage therapy, and nanomedicine are potential alternatives to these methods.

show abstract

“…are ubiquitous yeast species that generally exist as individual cells and reproduce asexually (Schulze and Sonnenborn 2009). They are classified as opportunistic pathogens that can infect a wide range of hosts, from various terrestrial animals to aquatic life forms (Hernandez-Divers 2001;Pressler et al 2003;Simpson et al 2009;Papon et al 2013;Eid et al 2017;Roh and Kim 2017;Wang et al 2021). A previous study in the Republic of Korea reported specific clinical signs, such as distended coelom in sturgeon fingerlings, related to the presence of Candida spp.…”

mentioning

confidence: 99%

Candida Manassasensis Infection in Mass Mortality Case of Siberian Sturgeon Acipenser Baerii Fingerlings in the Republic of Korea: A Case Report

et al. 2022

View full text Add to dashboard Cite

With the growing demand for caviar products, sturgeon (family Acipenseridae) have become some of the most popular species in the aquaculture industry. Since sturgeon need more than 10 years to become sexually mature, protection against fatal diseases becomes particularly important in the industry. In March 2018, approximately 10% of Siberian Sturgeon Acipenser baerii fingerlings in a sturgeon hatchery in Jeolla Province, Republic of Korea, exhibited anorexia, abdominal distension, buoyancy loss, and abnormal behavior and eventually showed a 90% fatality rate. Twenty moribund fish were necropsied, and a distended stomach filled with gas was found in every case. A single colony dominated the intestinal lumen smear and was identified as Candida manassasensis by polymerase chain reaction targeting 18S ribosomal RNA. The same microorganism was also detected in the sturgeons' feed. Antifungal resistance was examined using the VITEK 2 system, and the isolate was susceptible to voriconazole, caspofungin, micafungin, and flucytosine. The environmental stress factor for this case was speculated as decreased water temperature. Since similar cases have been observed for many years, further research to optimize precise treatment and prevention methods is required.

show abstract

Investigation of Some Mycotic Infections with Economic Importance in Freshwater Nile Tilapia

Cited by 4 publications

References 3 publications

Studies on Some Oreochromis niloticus fungal Infections

Studies on Some Oreochromis niloticus fungal Infections

Microbial Pathogens in Aquaponics Potentially Hazardous for Human Health

Candida Manassasensis Infection in Mass Mortality Case of Siberian Sturgeon Acipenser Baerii Fingerlings in the Republic of Korea: A Case Report

Contact Info

Product

Resources

About