Ulva lactuca

Pratiwi, Dian Yuni & Pratiwy, Fittrie Meyllianawaty, 2021, Comparison of Ulva lactuca and Ulva clathrata as ingredients in Litopenaeus vannamei feeds, International Journal of Fisheries and Aquatic Studies 9 (1), pp. 192-194 : 192

2. Ulva lactuca and Ulva clathrata

Ulva lactuca is bright green algae which can be black or white when dry. This algae live in marine water at high and low intertidal zone at depths of 75 feets or more. It lives free floating but can be found attached to rocks and shells by a holdfast. Size of U. lactuca is 6 inches- 2 feet. It has flat, thin, broad, rounded or oval leaves. It can be used as bioindicator species because this algae can grows well in polluted water [ 8]. U. lactuca contains protein, lipid, carbohydrate, fibre [ 9], secondary metabolite and others [ 10].

Ulva clathrata is light green marine algae. It can be found in Indo-Pacific, Atlantic Ocean, and the Mediterranean at depths between 0-29 m. It can be found attached to solid substrates like rocks or floating. Its thalli is branched and hair like hollow filaments [ 11], cylindrical or slightly flat. Ranges of size from 20-80 mm with a thread width of 1-3 mm [12]. High nutrition content made this algae can be used for used for human consumption, animal feed, and fertilizer [12].