Authors

Gilha Yoon

Publications 10

Research article Open access

Screening of probiotics from indigenous Omani natural products for potential use in the aquaculture industry

Gilha Yoon · Journal of Agricultural and Marine Sciences · 2025 · 10.53541/jams.vol29iss2pp51-63

Probiotics can enhance the growth performance and disease resistance of aquatic animals. Probiotics can influence digestive physiology through the secretion of exogenous digestive enzymes, facilitating the utilization of nutrients, and resulting in improvements in growth performance. The objectives of the present study …

Research article Open access

Ectoparasite Fauna of Imported Ornamental Fishes in Oman

Gilha Yoon · Journal of Agricultural and Marine Sciences · 2025 · 10.53541/jams.vol29iss2pp6-16

The movement of live aquatic animals crossing international borders is a regular activity for economic, social, and public resource development. A survey was carried out to investigate the prevalence of parasites translocated with imported ornamental fishes. Exotic diseases from imported fish have a potential hazard of …

Research article Open access

Histological Examination of Various Organs of Asian Seabass, Lates calcarifer after an Oral Inactivated Vaccine against Vibrio harveyi

Gilha Yoon · Journal of Agricultural and Marine Sciences · 2025 · 10.53541/jams.vol29iss2pp80-86

Disease outbreaks and consequential losses are a challenge to the aquaculture industry. Diseases in aquaculture are caused by pathogenic agencies, such as bacteria, viruses, and parasites. The use of vaccines is one approach for the control of infections in fish and in building immunity against them. The goal of the pr …

Research article Open access

Optimal density of Asian seabass (Lates calcarifer) in combination with the Omani abalone (Haliotis mariae), brown mussel (Perna sp.) and seaweed (Ulva fasciata) in a land-based recirculating integrated multi-trophic aquaculture (IMTA) system

Balqees Al Rashdi, Wenresti Glino Gallardo, Gilha Yoon et al. · Journal of Agricultural and Marine Sciences · 2020 · 10.24200/jams.vol25iss2pp13-21

An experiment was conducted to develop a land-based recirculating integrated multi-trophic aquaculture (IMTA) system using a combination of the Omani abalone (Haliotis mariae) and Asian seabass (Lates calcarifer) as fed species, brown mussel (Perna sp.) and seaweed (Ulva fasciata) as extractive species. Specifically, t …

Research article Open access

Bacterial Infection in Farmed Barramundi Juveniles, Lates calcarifer

Buthaina Al Khaziri, Adil Al Sulimani, Najla Al Mandhari et al. · Journal of Agricultural and Marine Sciences · 2019 · 10.24200/jams.vol23iss0pp76-80

In 2016, Barramundi, Lates calcaifer juveniles imported from Thailand to the aquaculture station at Sultan Qaboos University exhibited remarkable external clinical signs of losing scales, severe muscle necrosis, and ascites. Fin rot was also observed in the diseased fish. The mortality reached more than 90 % and it was …

Research article Open access

Bacterial Infection in Farmed Barramundi Juveniles, Lates calcarifer

Buthaina Al Khaziri, Adil Al Sulimani, Najla Al Mandhari et al. · Journal of Agricultural and Marine Sciences · 2019 · 10.24200/jams.vol23iss1pp76-80

In 2016, Barramundi, Lates calcaifer juveniles imported from Thailand to the aquaculture station at Sultan Qaboos University exhibited remarkable external clinical signs of losing scales, severe muscle necrosis, and ascites. Fin rot was also observed in the diseased fish. The mortality reached more than 90 % and it was …

Research article Open access

Gill monogenean communities on three commercially important sparid fish in Omani waters

Gilha Yoon, Hisham Al-Adawi, Andrew Paul Shinn · Journal of Agricultural and Marine Sciences · 2015 · 10.24200/jams.vol20iss0pp54-61

The prevalence and intensity of polyopisthocotylean monogeneans on the gills of three commercially important species of sparid caught in Omani coastal waters close to the city port of Muscat were determined and compared. Throughout May 2012 to April 2013, infections on bi-weekly samples of the soldier seabream, Argyrop …

Research article Open access

Mortality of the abalone Haliotis mariae (Haliotidae: Mollusca) in aquaculture

Gilha Yoon, Hajer Al-Kaabi, Um Kalthoum Al-Kindi et al. · Journal of Agricultural and Marine Sciences · 2015 · 10.24200/jams.vol20iss0pp73-77

The Omani abalone, Haliotis mariae, is the only species of abalone found in Omani waters. Given the rarity of this species and the high price it can fetch on the market (US$ 150 kg-1 dry weight), the wild abalone fishery in the Dhofar region has been regarded as a valuable income source for the past decade. The present …

Research article Open access

Gill histology of Nile tilapia Oreochromis niloticus following chronic and acute exposure to ammonia

Gilha Yoon, Najiya Al-Saadi, Aisha AmbuAli · Journal of Agricultural and Marine Sciences · 2015 · 10.24200/jams.vol20iss0pp66-72

Ammonia is a common aquatic pollutant and is toxic to fish. The main nitrogenous compound excreted by fish is also ammonia, which may reach toxic concentrations in high-density fish culture, reducing growth and productivity. In this study, changes in gill structure and mucus cell distribution were examined when juvenil …

Research article Open access

The In Vitro Activity of a Range of Natural Bioflavonoids Against Five Species of Pathogenic Fish Bacteria

Gilha Yoon, Sarah H. Al Jufaili, aliya al ghabshi et al. · Journal of Agricultural and Marine Sciences · 2011 · 10.24200/jams.vol16iss0pp41-50

The in vitro antibacterial activity of thirty two plant-derived compounds (26 crude herbal extraction and 6 pure citrus-based bioflavonoids) were tested on five different species of aquatic bacterial pathogens (Aeromonas hydrophila, A. salmonicida, A. sobria, Edwardsiella ictaluri, and E. tarda) over a period of 72 hou …

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