Argyrosomus Japonicus Research Paper

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Recommended: A structure of classification of animals

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Sciaenidae
Genus: Argyrosomus
Species: A. japonicus
Binomial name
Argyrosomus japonicus

Introduction
The Argyrosomus japonicus is a species that belongs to the family Sciaenidae. This family is commonly known as drums and croakers. The fish found in this family are mostly demersal and can be found in freshwater, estuarine and marine waters found in temperate and subtropical regions of the Pacific, Indian as well as the Atlantic oceans. There are approximately 70 genera and over 270 species globally. A. japonicus are important surf-zone and estuarine predators however reduction in population numbers does have a severe effect on eco-system hence thus encouraging eco-system fishing. Dusky kob plays an essential role in South Africa’s commercial and recreational linefish species that show a trend of abundance from Cape Agulhas to northern KZN. Roughly ten species of Sciaenidae occur around the shoreline of South Africa. A. japonicus is a suitable candidate for marine aquaculture because the species is of high market value, they are widely distributed, and they have a fast initial growth rate, salinity tolerance etc. Dusky Kob was recently evaluated by using the criteria of IUCN and was considered Vulnerable in South Africa. Infectious disease and parasite are the biggest threat to aquaculture. The exceeding of stock in cages has resulted in breeding grounds for parasite infections and diseases. Due to the lack of research performed in South Africa on parasites, not enough information is available to help mitigate the issue of parasites in aquaculture systems being developed. A common infection found in Dusky Kob is sea l...

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...tificial hatcheries and grow into humongous fish at a young age. This species has high tolerance in various water temperatures, drastic changes in ph and oxygen content but can still withstand the stressful conditions whilst growing optimally. A study was conducted over a 42 day period to test the Food Conversion Ratio (FCR) for this species and the results showed that the food conversion ratio is closely related to temperature. The temperature has to be at 21.7°C to achieve the best FCR. The study involved 2 tanks with an average of 21.7°C and 21.8°C. Observance over the temperature should be kept between the optimal temperature for growth of 25.3 °C and the optimal temperature for feeding efficiency is 21.7 °C, using this information could possibly help minimize the cost of feeding the stock in the cages having a less negative effect on the growth of the species.

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