Effects of osmotic stresses on the proteins concentration and pattern of Eriocheir sinensis blood

Effects of pot fishing on the physical condition of snow crab (Chionoecetes opilio) and southern Tanner crab (Chionoecetes bairdi)

“…The rapid degradation of Hc that we observed in our experiments may be one of these mechanisms. Increased degradation of blood protein, especially of Hc, has been observed in several euryhaline crab species during hyperosmotic stress (Gilles, 1977). In our experiments on snow and southern Tanner crabs, a similar phenomenon was observed in stenohaline crabs for the fi rst time.…”

“…Halftimes for clearance of 125 I-labeled Hc have been reported to be 25.5 and 36 days in American lobster (Homarus americanus) and Caribbean spiny lobster (Panulirus argus) (Senkbeil and Wriston, 1981). A more rapid synthesis of Hc can be induced by various environmental factors, such as changes of ambient salinity (Gilles, 1977;Péqueux et al, 1979) and by moderate chronic hypoxia (Hagerman and Baden, 1988;deFur et al, 1990;Spicer and Baden, 2001).…”

Effects of pot fishing on the physical condition of snow crab (Chionoecetes opilio) and southern Tanner crab (Chionoecetes bairdi)

“…The rapid degradation of Hc that we observed in our experiments may be one of these mechanisms. Increased degradation of blood protein, especially of Hc, has been observed in several euryhaline crab species during hyperosmotic stress (Gilles, 1977). In our experiments on snow and southern Tanner crabs, a similar phenomenon was observed in stenohaline crabs for the fi rst time.…”

“…Halftimes for clearance of 125 I-labeled Hc have been reported to be 25.5 and 36 days in American lobster (Homarus americanus) and Caribbean spiny lobster (Panulirus argus) (Senkbeil and Wriston, 1981). A more rapid synthesis of Hc can be induced by various environmental factors, such as changes of ambient salinity (Gilles, 1977;Péqueux et al, 1979) and by moderate chronic hypoxia (Hagerman and Baden, 1988;deFur et al, 1990;Spicer and Baden, 2001).…”

Free Amino Acid Composition in Muscle and Hemolymph of the Prawn Penaeus monodon in Different Salinities.

“…This was similar to those found in P. vannamei and P. japonicus.13,18) Under normal salinity conditions, the major FAA in the muscle of crayfish Astacus leptodactylus were glycine arginine and alanine, with a little proline.25) It is worth noticing that all these major osmolarity-contributing FAA except arginine are not essential amino acide for crustaceans.19-21) Generally, phenylalanine, valine, threonine, histidine, arginine, leucine, lysine, tryptophan, isoleucine, and methionine were considered as essential amino acids. Moreover, the composition of these osmoeffective FAA did not match the amino acid composition of muscle protein in shrimp P. aztecus, crayfish A. leptodactylus, and crab Eriocheir sinensis, where glutamate/glutamine and aspartic acid were the major constitutional amino acids.17, 22,20) Glutamate and asparitc acid increased slightly only in the FAA pool of 45 ppt acclimatized samples in this study. It seems that P. monodon has evolved using non-essential amino acids ofr osmoregulation so that using FAA as an osmolite will cause less impact on the normal metabolism of the animal.…”

Evolutionary transition to freshwater by ancestral marine palaemonids: evidence from osmoregulation in a tide pool shrimp

“…The 1.5-fold increase in hemolymph total FAA concentration after 5 d at 5 ‰ may derive from FAA efflux from the muscle tissue. Investigations in Eriocheir sinensis (Gilles 1977), Panulirus japonicus (Shinagawa et al 1995) and E. japonicus (Abe et al 2002) reveal that hemolymph FAA increase on exposure to dilute media and may be stored as hemolymph proteins like hemocyanin (Mantel & Farmer 1983), which may increase the amount of oxygen available to cells (Gilles & Péqueux 1981).…”

Effects of pot fishing on the physical condition of snow crab (Chionoecetes opilio) and southern Tanner crab (Chionoecetes bairdi)

“…The rapid degradation of Hc that we observed in our experiments may be one of these mechanisms. Increased degradation of blood protein, especially of Hc, has been observed in several euryhaline crab species during hyperosmotic stress (Gilles, 1977). In our experiments on snow and southern Tanner crabs, a similar phenomenon was observed in stenohaline crabs for the fi rst time.…”

“…Halftimes for clearance of 125 I-labeled Hc have been reported to be 25.5 and 36 days in American lobster (Homarus americanus) and Caribbean spiny lobster (Panulirus argus) (Senkbeil and Wriston, 1981). A more rapid synthesis of Hc can be induced by various environmental factors, such as changes of ambient salinity (Gilles, 1977;Péqueux et al, 1979) and by moderate chronic hypoxia (Hagerman and Baden, 1988;deFur et al, 1990;Spicer and Baden, 2001).…”

Free Amino Acid Composition in Muscle and Hemolymph of the Prawn Penaeus monodon in Different Salinities.

“…This was similar to those found in P. vannamei and P. japonicus.13,18) Under normal salinity conditions, the major FAA in the muscle of crayfish Astacus leptodactylus were glycine arginine and alanine, with a little proline.25) It is worth noticing that all these major osmolarity-contributing FAA except arginine are not essential amino acide for crustaceans.19-21) Generally, phenylalanine, valine, threonine, histidine, arginine, leucine, lysine, tryptophan, isoleucine, and methionine were considered as essential amino acids. Moreover, the composition of these osmoeffective FAA did not match the amino acid composition of muscle protein in shrimp P. aztecus, crayfish A. leptodactylus, and crab Eriocheir sinensis, where glutamate/glutamine and aspartic acid were the major constitutional amino acids.17, 22,20) Glutamate and asparitc acid increased slightly only in the FAA pool of 45 ppt acclimatized samples in this study. It seems that P. monodon has evolved using non-essential amino acids ofr osmoregulation so that using FAA as an osmolite will cause less impact on the normal metabolism of the animal.…”

Evolutionary transition to freshwater by ancestral marine palaemonids: evidence from osmoregulation in a tide pool shrimp

“…The 1.5-fold increase in hemolymph total FAA concentration after 5 d at 5 ‰ may derive from FAA efflux from the muscle tissue. Investigations in Eriocheir sinensis (Gilles 1977), Panulirus japonicus (Shinagawa et al 1995) and E. japonicus (Abe et al 2002) reveal that hemolymph FAA increase on exposure to dilute media and may be stored as hemolymph proteins like hemocyanin (Mantel & Farmer 1983), which may increase the amount of oxygen available to cells (Gilles & Péqueux 1981).…”

Effects of pot fishing on the physical condition of snow crab (Chionoecetes opilio) and southern Tanner crab (Chionoecetes bairdi)

“…The rapid degradation of Hc that we observed in our experiments may be one of these mechanisms. Increased degradation of blood protein, especially of Hc, has been observed in several euryhaline crab species during hyperosmotic stress (Gilles, 1977). In our experiments on snow and southern Tanner crabs, a similar phenomenon was observed in stenohaline crabs for the fi rst time.…”

“…Halftimes for clearance of 125 I-labeled Hc have been reported to be 25.5 and 36 days in American lobster (Homarus americanus) and Caribbean spiny lobster (Panulirus argus) (Senkbeil and Wriston, 1981). A more rapid synthesis of Hc can be induced by various environmental factors, such as changes of ambient salinity (Gilles, 1977;Péqueux et al, 1979) and by moderate chronic hypoxia (Hagerman and Baden, 1988;deFur et al, 1990;Spicer and Baden, 2001).…”

Free Amino Acid Composition in Muscle and Hemolymph of the Prawn Penaeus monodon in Different Salinities.

“…This was similar to those found in P. vannamei and P. japonicus.13,18) Under normal salinity conditions, the major FAA in the muscle of crayfish Astacus leptodactylus were glycine arginine and alanine, with a little proline.25) It is worth noticing that all these major osmolarity-contributing FAA except arginine are not essential amino acide for crustaceans.19-21) Generally, phenylalanine, valine, threonine, histidine, arginine, leucine, lysine, tryptophan, isoleucine, and methionine were considered as essential amino acids. Moreover, the composition of these osmoeffective FAA did not match the amino acid composition of muscle protein in shrimp P. aztecus, crayfish A. leptodactylus, and crab Eriocheir sinensis, where glutamate/glutamine and aspartic acid were the major constitutional amino acids.17, 22,20) Glutamate and asparitc acid increased slightly only in the FAA pool of 45 ppt acclimatized samples in this study. It seems that P. monodon has evolved using non-essential amino acids ofr osmoregulation so that using FAA as an osmolite will cause less impact on the normal metabolism of the animal.…”

Evolutionary transition to freshwater by ancestral marine palaemonids: evidence from osmoregulation in a tide pool shrimp

“…The 1.5-fold increase in hemolymph total FAA concentration after 5 d at 5 ‰ may derive from FAA efflux from the muscle tissue. Investigations in Eriocheir sinensis (Gilles 1977), Panulirus japonicus (Shinagawa et al 1995) and E. japonicus (Abe et al 2002) reveal that hemolymph FAA increase on exposure to dilute media and may be stored as hemolymph proteins like hemocyanin (Mantel & Farmer 1983), which may increase the amount of oxygen available to cells (Gilles & Péqueux 1981).…”