The comparison of different light intensity effect on the cysts hatching ability of Artemia urmiana and Artemia franciscana

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-07 Accepted : 2021-02-07 Published : 2014-11-22

Keywords: Artemia franciscana, Artemia urmiana, Hatching percentage, Keywords: Light intensity, Nauplii,

Abstract :

Abstract[1] The present study was conducted on hatching percentage in two important spices of brine shrimp cysts, including Artemia urmiana and Artemia franciscana, in four light intensities (0, 1000, 2000 and 4000 lux) that they were located respectively in treatments 1, 2, 3 and 4. For calculating the percentage of hatching, after 24 hours incubation of cysts, five samples were taken from each incubator and amount of hatched, umbrella and un-hatched stages of cysts were counted. According to our results, hatching percentages in both species showed significant differences in different light intensities (p < 0.05). Treatments 1 and 3 in both spices had respectively lowest and highest hatching percentages. Obtained results of comparison of cysts hatching percentages in treatments 1 and 3 showed no significant difference between two studied species (P>0.05), but there were significant differences between species in treatments 2 and 4 (p < 0.05). * Corresponding Authors; Email: [e-mail]