Microparticle
types for delivering nutrients to marine fish larvae
Ch. Langdon
Aquaculture, 227(1-4): 259-275
Abstract:
Development of artificial diets for the total
replacement of live feeds for rearing marine fish larvae has not been
achieved despite many years of research effort. The types of microparticles
used to deliver nutrients to larvae need to be carefully evaluated and
improved. Losses of water-soluble nutrients from microparticulate diets may
be more rapid than is generally appreciated, resulting in less nutritious
diets and fouling of the culture medium. Microbound and cross-linked
protein-walled capsules may provide a means of delivering lipids and
high-molecular weight, water-soluble nutrients to larvae, such as proteins
and carbohydrates. Lipid-walled capsules, lipid spray beads and liposomes
are potentially useful in delivering low-molecular weight, water-soluble
nutrients, such as amino acids and water-soluble vitamins. Nutrient losses
due to leakage should be determined to compare the effectiveness of
different particle types for delivery of nutrients to larvae.
(Department of Fisheries and Wildlife, Coastal Oregon
Experimental Station, Hatfield Marine Science Center, Oregon State
University, Newport, OR 97365, USA, e-mail: chris.langdon@oregonstate.edu)