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Zoo Biology 25:513525 (2006) Research Article

Summary: Zoo Biology 25:513­525 (2006)
Research Article
Comparative Growth and Survival
of Juvenile Hard Clams, Mercenaria
mercenaria, Fed Commercially
Available Diets
Emmanuelle Pales Espinosa, and Bassem AllamÃ
Marine Sciences Research Center, Stony Brook University, Stony Brook, New York
Hobbyist and researchers often use commercially available phytoplankton
concentrates to maintain filter feeding organisms held in their ornamental or
experimental tanks. This study investigated the nutritional value of 10 products
available commercially for juvenile hard clams, Mercenaria mercenaria. Growth
and mortality rates in clams fed these products were compared with those found
in clams fed fresh cultures of the microalgae Isochrysis galbana, which is
considered an industry standard for supporting growth of juvenile bivalves. Our
results show a clear difference in feed nutritional value between non-living and
living commercial diets, and among commercial diets advertised as containing
live algae. Overall, results showed that juvenile hard clams fed fresh cultures
of I. galbana displayed the best growth and lowest mortality rates, followed by those
fed the commercial diet DT's Live Marine Phytoplankton. Growth and mortality


Source: Allam, Bassem - School of Marine and Atmospheric Sciences, SUNY at Stony Brook


Collections: Biology and Medicine; Environmental Sciences and Ecology