Study of amino acids, free or as components of protein, and of some B vitamins in the tissues of the atlantic salmon, Salmo salar, during spawning migration

Cowey, C. B.; Daisley, K. W.; Parry, Gwyneth

doi:10.1016/0010-406x(62)90024-5

Cited by 61 publications

(13 citation statements)

References 22 publications

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“…It is also affected by gonad maturation, e.g., variation in the levels of free amino acids in gonads of CZupea harengus are related to maturation (Gjessing, 1963). However, no changes were found in the levels of free amino acids in the muscle of C. harengus (Hughes, 1959) and Salmo salar (Cowey et al, 1962) in relation to the state of maturation.…”

Section: Seasonal Variationcontrasting

confidence: 49%

Variation in the free amino acid content of skeletal muscle of Ophicephalus punctatus (Bloch)

Siddiqui

1977

Journal of Fish Biology

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The skeletal muscle of Ophicephalus punctatus contains nine essential free amino acids, arginine, histidine, isoleucine, leucine, methionine, phenylalanine, threonine, valine and lysine, and eight non-essential amino acids, alanine, aspartic acid, cystine, glutamic acid, glycine, tyrosine, proline and serine. Histidine and lysine dominated the free amino acids pool. Seasonal variation was detected in the levels of histidine, arginine, leucine, phenylalanine, glycine, cystine and serine with highest values occurring in April and again in November. Changes were also detected in the concentrations of certain amino acids as the fish grew in size. Levels of free amino acids did not significantly differ between sexes. Factors effecting variation are discussed.

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Section: Seasonal Variationcontrasting

confidence: 49%

Variation in the free amino acid content of skeletal muscle of Ophicephalus punctatus (Bloch)

Siddiqui

1977

Journal of Fish Biology

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“…While essential amino acids are known to exhibit little change from their isotopic composition in the diet, other amino acids that are wholly synthesized or at least partly modified within the body may undergo shifts in δ 15 N of varying magnitude. Abundance of the non-essential amino acid taurine in fish muscle (Cowey & Daisley 1962;Wilson & Poe 1974;van Waarde 1988) might explain why white muscle was the most enriched tissue of the four Rainbow Trout tissues examined (Fig. 2a).…”

mentioning

confidence: 99%

Differential fractionation of δ¹³C and δ¹⁵N among fish tissues: implications for the study of trophic interactions

1999

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1. Stable isotopes of nitrogen and carbon are widely used in the evaluation and understanding of trophic interactions, and especially so in aquatic food‐webs. However, differences among tissues which occur in consumers such as fish may confound resolution of these ecological relationships, and greatly affect dietary compositions calculated through mass‐balance equations. 2.δ13C and δ15N were determined for homogenized whole fry (≈ 2·7 g) and particular tissues (white muscle, red muscle, liver and heart) of juveniles (≈ 20·6 g) of Rainbow Trout Oncorhynchus mykiss. 3. Differences in δ13C and δ15N were observed among tissues; removal of lipid resulted in these tissues becoming statistically indistinguishable but more variable in δ13C, particularly in tissues with higher lipid content. Differences in δ15N among tissues may be related to the relative composition of ‘essential’ and ‘non‐essential’ amino acids. 5. Acidification, which is used to reduce variability caused by the presence of inorganic carbonate, had a significant effect on δ15N, while having a non‐significant effect on the δ13C. This was the case for whole ground fish‐fry, which contained 22·6% inorganic carbonates in the form of bones and scales, and for individual fish tissues which contained only very small amounts of inorganic carbonate. 6. White muscle was found to be less variable in δ13C and δ15N than all other tissues, and is probably the best tissue for use in ecological work. Red muscle, which is often closely associated with white muscle, is more variable in δ13C and may constitute a source of significant error in source material identification and dietary overlap.

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“…The muscle tissue of Atlantic salmon contains very high concentrations of anserine (Cowey et al, 1962). That such a redistribution really occurs cannot be decided from the present study.…”

Section: Estimation Of Buffer Capacity By Means Of Hcl Titrationmentioning

confidence: 56%

Effects of hypercapnia on the buffer capacity and haematological values in Salmo salar (L.)

Börjeson¹

1977

Journal of Fish Biology

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The effects of high environmental carbon dioxide tension (PCO,) on buffering status, pH, haematocrit, red blood cell (RRC) count, mean corpuscle volume (MCV), and chloride (C1-) distribution in the blood of young salmon were investigated after 30 min and 24 h. An increase in blood buffering capacity was observed after 24 h. As compared to the preacclimation situation, haematocrit, RBC, MCV and CI-content of the erythrocytes increased after 30 min but decreased if hypercapnia was sustained for 24 h. However the plasma bicarbonate (HCO 3) content increased over the whole experimental period. Plasma C1-content was decreased after 24 h, but the ratio of C1-between erythrocytes and plasma increased at the onset of hypercapnia, then remained unchanged during the rest of the investigation period.

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Study of amino acids, free or as components of protein, and of some B vitamins in the tissues of the atlantic salmon, Salmo salar, during spawning migration

Cited by 61 publications

References 22 publications

Variation in the free amino acid content of skeletal muscle of Ophicephalus punctatus (Bloch)

Variation in the free amino acid content of skeletal muscle of Ophicephalus punctatus (Bloch)

Differential fractionation of δ¹³C and δ¹⁵N among fish tissues: implications for the study of trophic interactions

Effects of hypercapnia on the buffer capacity and haematological values in Salmo salar (L.)

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Study of amino acids, free or as components of protein, and of some B vitamins in the tissues of the atlantic salmon, Salmo salar, during spawning migration

Cited by 61 publications

References 22 publications

Variation in the free amino acid content of skeletal muscle of Ophicephalus punctatus (Bloch)

Variation in the free amino acid content of skeletal muscle of Ophicephalus punctatus (Bloch)

Differential fractionation of δ13C and δ15N among fish tissues: implications for the study of trophic interactions

Effects of hypercapnia on the buffer capacity and haematological values in Salmo salar (L.)

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Differential fractionation of δ¹³C and δ¹⁵N among fish tissues: implications for the study of trophic interactions