Fereidun Mohebbi; Masoud Seidgar; Mahmood Hafezieh; Reza Ahmadi; Parvin Mohebbi Garalar
Volume 5, Issue 1 , September 2016, , Pages 39-49
Abstract
Abstract This study was performed to compare the efficiency of 6 microalgae namely Dunaliella tertiolecta, Tetraselmis suecica, Chlorella sp., (green algae), Nannochloropsis oculata, Spirolina sp.(blue-green algae) Cheatocerus sp. (Diatoma), and Isochrices sp. (Haptophytae) on the growth, survival ...
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Abstract This study was performed to compare the efficiency of 6 microalgae namely Dunaliella tertiolecta, Tetraselmis suecica, Chlorella sp., (green algae), Nannochloropsis oculata, Spirolina sp.(blue-green algae) Cheatocerus sp. (Diatoma), and Isochrices sp. (Haptophytae) on the growth, survival and reproduction efficacy in Artemia urmiana in laboratory conditions. Artemia cysts were harvested from Urmia Lake and hatched according to the standard method. Live microalgae were cultured using the F/2 Guillard's culture medium. Artemia survival was determined in treatments on days 8, 11, 14, 17 and 20. Length growth of A. urmiana was measured in three-day intervals. To determine reproduction efficiency characteristics such as cysts production, intervals between two successive reproductions, first reproduction time and the date of female Artemia were analyzed. The results indicated a significant difference (p < 0.001) among three microalgae in terms of length growth, survival rates and reproduction characteristics in A.urmiana. There was a direct relationship between Artemia length growth and reproductive characteristics. This study showed that survival rate, length growth and reproductive characteristics of A.urmiana fed by Dunaliella tertiolecta were significantly higher than A.urmiana fed by other microalgae. It seems that Artemia culture in salt water with Dunaliella as natural flora is a suitable choice.
M. SEIDGAR; A. NEKOUIE FARD; M. HAFEZIEH
Volume 3, Issue 2 , March 2015, , Pages 67-74
Abstract
This study was performed to determine the effect of Phallocryptus spinosa as a diet on fecundity and hatching performance of 4 trade valuable prawn ornamental fish genera, including Angel Fish (Pterophyllum scalare), Green Tailor (Aequidens rivulatus), Gourami (Trichopodus trichopterus) , and Afra (Cynotilapia ...
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This study was performed to determine the effect of Phallocryptus spinosa as a diet on fecundity and hatching performance of 4 trade valuable prawn ornamental fish genera, including Angel Fish (Pterophyllum scalare), Green Tailor (Aequidens rivulatus), Gourami (Trichopodus trichopterus) , and Afra (Cynotilapia afra). Prawn ornamental fish genera, were studied in two test groups feeding with cow heart and spinach – and fairy shrimp (Phallocryptus spinosa) in one treatment and two replicates for a month in controlled condition and sultable for each genera. Also, additionally, all fish were fed granulated concentrate daily. Between group comparison in each genera showed a significant difference (pPhallocryptus spinosa can increase reproductive performance in mentioned prawn ornamental fish.
M Seydgar; Gh Azari Takami
Volume 3, Issue 1 , January 2015, , Pages 17-25
Abstract
Fairy Shrimps (Anostraca) have a great importance as live food in aquatic animals larviculture. They are important for enhancing growth rate and survival rate in various aquatic animals specially, sturgeon, salmonidae, Astacus leptodactylus. Fatty acid profile of fairy shrimps Chirocephalus skorikowi ...
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Fairy Shrimps (Anostraca) have a great importance as live food in aquatic animals larviculture. They are important for enhancing growth rate and survival rate in various aquatic animals specially, sturgeon, salmonidae, Astacus leptodactylus. Fatty acid profile of fairy shrimps Chirocephalus skorikowi and Streptocephalus torvicornis from Aigher Goli and Ghom Tappeh pools of East Azerbaijan, Iran were determined using GC technique. The results showed that they had a large amount of EPA, DHA, Σ n-3 HUFA Linolenic acid and Linoleic acid, as though their highest amounts in various pools were; 9.85, 1.05, 10.30, 12.73 and 5.75 percent respectively, that had a great value comparing with Artemia. These animals contain of 11-50 %protein, highly unsaturated fatty acid specialties such as high amounts of EPA and DHA, carotenid complexes and as a live food enable to provide nutritious needs of growth stages of various aquatic animals (specially in sensitive larval stages) and improve their life spans and meat quality.
