The Impacts of Different Algal Diets, Temperature, and Salinity on Locally Isolated Euryhaline Rotifer's (Brachionus Plicatilis) Growth and Egg Production

El-Tohamy , Wael S.; Abou Eleila , Rahma H. M.

Article Details

The Impacts of Different Algal Diets, Temperature, and Salinity on Locally Isolated Euryhaline Rotifer's (Brachionus Plicatilis) Growth and Egg Production

Authors:

El-Tohamy , Wael S. | Abou Eleila , Rahma H. M.

Publisher:

Egyptian Society for the Development of Fisheries and Human Health

Main Topics:

Biology

Journal:

Egyptian Journal of Aquatic Biology and Fisheries 2024 Vol.28 Issue 3, pp.911-930

Document Type:

Article

Publication Date:

7/2024

Document Language:

English

Document ID (Org No.):

272333

Frequency:

Quarterly

pISSN:

11106131

Descriptors:

Keywords:

Abstract:

 The aquaculture industry commonly uses the euryhaline rotifer Brachionus plicatilis as food for various marine fish larvae. The current study examined the growth and/or egg production rates of B. plicatilis, isolated from the Nile River's Damietta estuary, considering temperature, salinity, and the concentrations of three algal diets. The microalgae species, Tetraselmis sp., Nannochloropsis sp., and Chaetoceros sp., were used as feed with various densities ranging from 2×104 to 6×105 cells/mL. The population density, specific growth rates (SGRs), and egg production rate (EPR) were significantly affected (P˂0.01) when fed diets of different densities. The highest population growth of 503±55.15 individuals/mL, SGR of 0.34±0.10, and EPR of 2.31±0.13 were recorded for the Tetraselmis sp. at a concentration of 6×105 cells/mL. The temperature showed a significant (P<0.05) effect on growth rate and EPR. The rotifers cultured at 20°C had a higher growth rate than those grown at other temperatures. EPR was also expected to increase with increasing temperatures, except for 30°C. B. plicatilis exhibited a greater rate of population growth at salinities ranging from 15 to 20psu compared to a salinity of 30psu. It was deduced that variations in temperature and salinity affect the development rate and reproductive activity of B. plicatilis. The best food for B. plicatilis was Tetraselmis sp., followed by Nannochloropsis sp., while the Chaetoceros sp. seemed to be insufficient.

Article Details

The Impacts of Different Algal Diets, Temperature, and Salinity on Locally Isolated Euryhaline Rotifer's (Brachionus Plicatilis) Growth and Egg Production

Authors:

El-Tohamy , Wael S. | Abou Eleila , Rahma H. M.

Publisher:

Egyptian Society for the Development of Fisheries and Human Health

Main Topics:

Biology

Journal:

Egyptian Journal of Aquatic Biology and Fisheries 2024 Vol.28 Issue 3, pp.911-930

Document Type:

Article

Publication Date:

7/2024

Document Language:

English

Document ID (Org No.):

272333

Frequency:

Quarterly

pISSN:

11106131

Descriptors:

ALGAE

DIET

TEMPERATURE

SALINITY

ROTIFERA

Brachionus plicatilis

Microalgae

Temperature

Salinity

Egg production

Rotifers

Issues

Article Details

Authors: El-Tohamy , Wael S. | Abou Eleila , Rahma H. M.

Publisher: Egyptian Society for the Development of Fisheries and Human Health

Main Topics: Biology

Journal: Egyptian Journal of Aquatic Biology and Fisheries 2024 Vol.28 Issue 3, pp.911-930

Document Type: Article

Publication Date: 7/2024

Document Language: English

Document ID (Org No.): 272333

Frequency: Quarterly

pISSN: 11106131

Descriptors:

Issues

Authors:

El-Tohamy , Wael S. | Abou Eleila , Rahma H. M.

Publisher:

Egyptian Society for the Development of Fisheries and Human Health

Main Topics:

Biology

Journal:

Egyptian Journal of Aquatic Biology and Fisheries 2024 Vol.28 Issue 3, pp.911-930

Document Type:

Article

Publication Date:

7/2024

Document Language:

English

Document ID (Org No.):

272333

Frequency:

Quarterly

pISSN:

11106131