Salinity Tolerance and the Effect of Salinity and Algal Feed on the Demographics of Cultured Harpacticoid Copepods Tisbe holothuriae and Tigriopus sp. from the Messolonghi Lagoon (W. Greece)

The locally isolated harpacticoid copepods Tigriopus sp. and Tisbe holothuriae were subjected to salinity tolerance experimentation at salinities under above of 40 ppt, presented high halotolerances in LC50 (24 h) 1 ± 4.43 ppt 132 5.35 respectively, 15 2.41 93 3.23 respectively. Tetraselmis suecica, among other microalgal feeds (Asteromonas gracilis, Rhodomonas salina, Dunaliella salina Isochrysis galbana), resulted the higher production nauplii R. D. (also close T. suecica Tigriopus). demographics (number nauplii, egg sacs, completion hatching) both copepods, using combinations range 22–60 as feeds, exhibited almost same preference for microalgae but negatively affected by 60 ppt. present experiments showed that these local have extreme a wide easily cultured can be used ecological studies mass live feed marine fish hatcheries.