Applying a New Feeding Protocol for Enhancing Mass Culture and Nutritional Value of the Rotifer Brachionus plicatilis Müller, 1786

Hegab, Mahmoud H.; Abdelhameed, Moustafa S.; Nasr, Hoda Shafiek; Mola, Hesham R.A.

doi:10.4194/2618-6381-v20_2_02

Cited by 2 publications

(1 citation statement)

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“…rotundiformis, particularly at the highest saline area of Qarun Lake, comprising 49.7% of total zooplankton abundance. B. plicatilis has high protein and lipid contents of 51.6% and 33.01%, respectively and high contents of several fatty acids and essential amino, speci cally glutamic acid, (Hegab et al, 2020). Copepoda composition in El Bieda Lake was so different from other Egyptian inland saline lakes (Qarun and Wadi El Rayan Lakes).…”

Section: Fisheriesmentioning

confidence: 91%

Ecosystem and fish commercializing in a rich-minerals, low-salinity and semi-arid closed lake

Abdelkarim¹,

Al-Afify²,

Aly³

et al. 2023

Preprint

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This study aimed at representing some biological and chemical features of Bieda lake and discussing its fisheries opportunities. The water is well-oxygenated, rich with different nutrient salts. sodium and chloride values were lower than the equivalent surface seawater. The lake characterized by species richness of phytoplankton and zooplankton. Currently, two euryhaline cichlid species, Oreochromis aureus and Coptodon zillii, inhabited the lake. Their condition factors were 1.82 and 2.03, respectively. C. zillii was very low with slight mortality during summer. The high density and high nutritional plankton communities and the dense microphytobenthic diatoms film covered the lake sediment revealed that fishes inhabiting the lake is under their carrying capacity and introducing mullet’s species is very important. The well-oxygenated water, high plankton density, diatoms biofilms, and expected salinity change evidenced that translocation and culturing of the commercially M. cephalus or C. ramada in El Bieda Lake is very advised.

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Section: Fisheriesmentioning

confidence: 91%

Ecosystem and fish commercializing in a rich-minerals, low-salinity and semi-arid closed lake

Abdelkarim¹,

Al-Afify²,

Aly³

et al. 2023

Preprint

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Ecosystem and Commercializing of Fish in a Rich-Minerals, Low-Salinity Closed Lake

Abdelkarim,

Belal,

Flefil

et al. 2023

Water Air Soil Pollut

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Wadi El Natrun is an elongated narrow depression in the Western Desert of Egypt. The depression characterized by many ancient alkaline salt lakes. These lakes are filled with water in winter and dried up in summer. Recently, some lakes become permanently dried, while others become submerged throughout the year as El Bieda Lake. El Bieda Lake has undergone ecological changes due to the prolonged extraction of minerals and the continual discharging of freshwater. This study investigates the recent biotic and abiotic changes of this lake and discusses its fisheries opportunities. The lake’s water is well-oxygenated, rich with different inorganic nutrients, and characterized by a low salinity. Sodium and chloride ion concentrations are lower than the equivalent surface seawater, while magnesium, calcium, potassium, sulfate, and bicarbonate ions are higher. The lake has low plankton species richness with high biomass and high nutritional values. More recently, two cichlid species, Oreochromis aureus and Coptodon zillii, have colonized the lake. Summer characterized by a very low mortality for Oreochromis aureus and a poor representation of Coptodon zillii. However, both species shared the catch the rest of the year. The high biomass and nutritional quality of plankton communities, as well as the dense phytobenthic film, indicate that the lake is currently below its carrying capacity. The well-oxygenated water, high biomass of plankton and phytobenthic diatoms, and the expected changes in salinity suggest that introducing the euryhaline, commercially valuable, and fast-growing Mugil cephalus or Chelon ramada in El Bieda Lake is highly advisable.

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Applying a New Feeding Protocol for Enhancing Mass Culture and Nutritional Value of the Rotifer Brachionus plicatilis Müller, 1786

Cited by 2 publications

References 0 publications

Ecosystem and fish commercializing in a rich-minerals, low-salinity and semi-arid closed lake

Ecosystem and fish commercializing in a rich-minerals, low-salinity and semi-arid closed lake

Ecosystem and Commercializing of Fish in a Rich-Minerals, Low-Salinity Closed Lake

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