Effect of dietary d-amino acids on growth, survival, ammonia excretion and specific dynamic action in the supralittoral isopod, Ligia pallasii

Starvation causes disturbance in amino acid and fatty acid metabolism in Diporeia

“…An interesting outcome of our studies has been the characterization of amino acid declines during starvation. Amino acids are essential for several functions including energy production, osmoregulation and muscle growth (Carefoot et al, 1992;Rosas et al, 2001;Huong et al, 2010;Karanova and Andreev, 2010). Our studies are in accordance with similar findings which found decreased levels of amino acids in crustaceans in the wild possibly due to starvation-like conditions Nunes, 2003, 2005;Mente et al, 2010).…”

Starvation causes disturbance in amino acid and fatty acid metabolism in Diporeia

“…An interesting outcome of our studies has been the characterization of amino acid declines during starvation. Amino acids are essential for several functions including energy production, osmoregulation and muscle growth (Carefoot et al, 1992;Rosas et al, 2001;Huong et al, 2010;Karanova and Andreev, 2010). Our studies are in accordance with similar findings which found decreased levels of amino acids in crustaceans in the wild possibly due to starvation-like conditions Nunes, 2003, 2005;Mente et al, 2010).…”

Nitrogen Mineralization: Challenges of a Changing Paradigm

“…as some fauna excrete NH 4 ϩ (Lee and Atkinson 1977, Carefoot et al 1992, Hassink et al 1994), grazing also recycles some N into DON or polymeric SOM (soil organic matter) as undigested fecal material (Lee 1985, Woolley 1988, Ferrier-Pages et al 1998). Stresses, such as drying-rewetting and freeze-thaw, can damage or kill microbes, returning microbial polymers (protein, cell walls) to the polymeric soil organic-matter pool, while releasing amino acids and other organic monomers into the DON pool (Kieft et al 1987, DeLuca et al 1992, Halverson et al 2000).…”

Partial Purification and Properties of Alanine Racemase from the Muscle of Black Tiger Prawn <i>Penaeus monodon</i>

“…Free D-amino acids have been found in the tissues of several aquatic invertebrates during the past two decades. [1][2][3][4][5][6][7][8][9][10][11][12][13] We also detected a large amount of free D -alanine as well as small amounts of the other D-amino acids in the skeletal muscle, heart, hepatopancreas, gill,14) and nervous tissues15) of several aquatic crustaceans (macrurans and brachyurans). However, the physiological function and metabolism of these D-amino acids were still unclear.…”

Starvation causes disturbance in amino acid and fatty acid metabolism in Diporeia

“…An interesting outcome of our studies has been the characterization of amino acid declines during starvation. Amino acids are essential for several functions including energy production, osmoregulation and muscle growth (Carefoot et al, 1992;Rosas et al, 2001;Huong et al, 2010;Karanova and Andreev, 2010). Our studies are in accordance with similar findings which found decreased levels of amino acids in crustaceans in the wild possibly due to starvation-like conditions Nunes, 2003, 2005;Mente et al, 2010).…”

Nitrogen Mineralization: Challenges of a Changing Paradigm

“…as some fauna excrete NH 4 ϩ (Lee and Atkinson 1977, Carefoot et al 1992, Hassink et al 1994), grazing also recycles some N into DON or polymeric SOM (soil organic matter) as undigested fecal material (Lee 1985, Woolley 1988, Ferrier-Pages et al 1998). Stresses, such as drying-rewetting and freeze-thaw, can damage or kill microbes, returning microbial polymers (protein, cell walls) to the polymeric soil organic-matter pool, while releasing amino acids and other organic monomers into the DON pool (Kieft et al 1987, DeLuca et al 1992, Halverson et al 2000).…”

Partial Purification and Properties of Alanine Racemase from the Muscle of Black Tiger Prawn <i>Penaeus monodon</i>

“…Free D-amino acids have been found in the tissues of several aquatic invertebrates during the past two decades. [1][2][3][4][5][6][7][8][9][10][11][12][13] We also detected a large amount of free D -alanine as well as small amounts of the other D-amino acids in the skeletal muscle, heart, hepatopancreas, gill,14) and nervous tissues15) of several aquatic crustaceans (macrurans and brachyurans). However, the physiological function and metabolism of these D-amino acids were still unclear.…”

Starvation causes disturbance in amino acid and fatty acid metabolism in Diporeia

“…An interesting outcome of our studies has been the characterization of amino acid declines during starvation. Amino acids are essential for several functions including energy production, osmoregulation and muscle growth (Carefoot et al, 1992;Rosas et al, 2001;Huong et al, 2010;Karanova and Andreev, 2010). Our studies are in accordance with similar findings which found decreased levels of amino acids in crustaceans in the wild possibly due to starvation-like conditions Nunes, 2003, 2005;Mente et al, 2010).…”

Nitrogen Mineralization: Challenges of a Changing Paradigm

“…as some fauna excrete NH 4 ϩ (Lee and Atkinson 1977, Carefoot et al 1992, Hassink et al 1994), grazing also recycles some N into DON or polymeric SOM (soil organic matter) as undigested fecal material (Lee 1985, Woolley 1988, Ferrier-Pages et al 1998). Stresses, such as drying-rewetting and freeze-thaw, can damage or kill microbes, returning microbial polymers (protein, cell walls) to the polymeric soil organic-matter pool, while releasing amino acids and other organic monomers into the DON pool (Kieft et al 1987, DeLuca et al 1992, Halverson et al 2000).…”

Partial Purification and Properties of Alanine Racemase from the Muscle of Black Tiger Prawn <i>Penaeus monodon</i>

“…Free D-amino acids have been found in the tissues of several aquatic invertebrates during the past two decades. [1][2][3][4][5][6][7][8][9][10][11][12][13] We also detected a large amount of free D -alanine as well as small amounts of the other D-amino acids in the skeletal muscle, heart, hepatopancreas, gill,14) and nervous tissues15) of several aquatic crustaceans (macrurans and brachyurans). However, the physiological function and metabolism of these D-amino acids were still unclear.…”