Blood protein, blood volume and extracellular space relationships in two Penaeus spp. (decapoda: crustacea)

Smith, David M.; Dall, W.

doi:10.1016/0022-0981(82)90046-6

Cited by 47 publications

(39 citation statements)

References 24 publications

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“…Addition of water to, or loss from the haemolymph pool will inevitably result in dilution or concentration of the protein constituents unless other regulatory processes intervene. Smith & Dall (1982) Great caution should be exercised when basing calculations on estimated haemolymph volumes. This will become apparent later in the discussion but one example serves to illustrate the point.…”

Section: Factors Affecting Haemocyanin Synthesismentioning

confidence: 99%

“…However, the theoretical haemocyanin copper requirement was based on an estimated haemolymph volume of 37 % fresh weight (f. w.) (White & Rainbow, 1985, 1987. If a more realistic blood volume estimate is 10 % f. w. (Smith & Dall, 1982) then theoretical requirements and measured copper leveis fall within the same range. This removes the basis for postulating that copper and haemocyanin deficiency limit the ability of juveniles to perform vertical migrations.…”

Section: Factors Affecting Haemocyanin Synthesismentioning

confidence: 99%

“…However, some doubt remains. Smith & Dall (1982) reported that in penaeid shrimps, blood volume varies inversely with total protein concentration of the haemolymph. Furthermore, after 24 days starvation, blood protein concentration decreased by 65 % while blood volume increased by 50 %.…”

Section: Haemocyanin Concentration and Nutritional Statementioning

confidence: 99%

“…With a blood volume of 10 % f.w. {Smith & Dall, 1982}, this gives a haemolymph copper content for a 2g fresh weight (0.58g dry weight) specimen of 21 ~tg Cu. Using Bryan's (1968) upper estimate for whole body copper (27.5 ~tg Cu g-1 fresh weight}, the predicted whole body copper load (including haemolymph and all tissues} would be approx.…”

Section: Copper Levels In Decapodsmentioning

confidence: 99%

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Haemolymph protein composition and copper levels in decapod crustaceans

Depledge¹,

Bjerregaard²

1989

Helgolander Meeresunters

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Variations in haemolymph protein composition and concentration, in copper content and copper distribution in the tissue of decapod crustaceans are reviewed. Haemocyanin is the major haemolymph constituent (> 60 %); the remaining proteins (in order of concentration) incIude coagulogen, apohaemocyanin, hormones and antisomes. Moulting, nutritional state, infection, hypoxia and salinity fluctuations are the major factors affecting the relative proportions and total quantities of the haemolymph proteins. With regard to haemocyanin, the changes in concentration during the moult cycle are principally associated with changes in haemolymph volume, rather than with changes in total haemocyanin content due to synthesis or catabolism. The role of the midgut gland in regulating haemolymph copper and haemocyanin concentration has been re-evaluated. More than 50 % of the whole body copper load is stored in the haemolymph. In contrast, less than 3 % of the copper load resides in the midgut gland. The latter has little potential for regulating haemolymph copper levels, at least in the short term (hours to a few days), though it may be involved in regulating haemocyanin levels over longer periods (weeks to months). The total coppe r content of the haemolymph remains within a narrow range, except during starvation when levels may decrease. Consequently, variations in the copper content of soft tissues, which constitute only 20 % of decapod dry weight, do not significantly alter whole body copper concentrations. Evidence that copper released following haemocyanin catabolism becomes bound to metallothionein for later use in the resynthesis of haemocyanin is reviewed and found to be inqonclusive. The amount of copper that can be stored in this way is trivial compared with the amount of copper required to permit significant changes in haemolymph haemocyanin concentration. Average tissue copper requirements, calculated during the present study, are approx. 4 times higher than previous theoretical estimates.

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Section: Factors Affecting Haemocyanin Synthesismentioning

confidence: 99%

Section: Factors Affecting Haemocyanin Synthesismentioning

confidence: 99%

Section: Haemocyanin Concentration and Nutritional Statementioning

confidence: 99%

Section: Copper Levels In Decapodsmentioning

confidence: 99%

See 2 more Smart Citations

Haemolymph protein composition and copper levels in decapod crustaceans

Depledge¹,

Bjerregaard²

1989

Helgolander Meeresunters

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“…These 3 parameters decrease to low levels after ecdysis, increase during intermoult and reach their maximum during the premoult period (Zuckerkandl 1960, Busselen 1970, Dall 1974, Truchot 1978, Smith & Dall 1982, Hagerman 1983, Engel & Brouwer 1991, Scott-Fordsmand & Depledge 1997. The postmoult growth of muscle reduces the haemolymph volume, and thus the concentrations of haemolymph protein proportionally increase (Smith & Dall 1982).…”

Section: Introductionmentioning

confidence: 99%

Growth of tissues related to haemolymph copper throughout the moult cycle of the lobster Homarus gammarus

Devescovi

Lucu²

2003

Mar. Ecol. Prog. Ser.

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ABSTRACT:The relationship between tissue weights and haemolymph copper levels in fieldcollected European lobsters Homarus gammarus was investigated to assess whether haemolymph copper concentration can be used to reliably determine nutritional condition in lobsters. During the moult cycle, the soft tissue weight (mostly muscle) increased concomitantly with a decrease in haemolymph weight while exoskeleton weight increased from postmoult to intermoult. Haemolymph copper concentration gradually increased from postmoult to premoult with a range of 29.7 (Stage B) to 163.5 µg g -1 wet weight (ww) (Stage D 0 ). Our measurements suggest that the main processes that increase haemolymph copper concentration is a reduction in haemolymph space and an increase in haemolymph copper content, indicating synthesis of new haemocyanin for the oxygen supply of growing tissues. During the moult cycle, haemolymph copper content was proportional to soft tissue mass and amounted to 43.6 µg Cu g -1 of soft-tissue ww (95% confidence limits = 35.5 and 51.6 µg g

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Postprandial nutrient dynamics and their implications for formulated feed development for the ornate spiny lobster (Panulirus ornatus)

Hammel,

Cobcroft,

Nankervis

2024

Aquaculture Fish & Fisheries

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Crustacean feeding morphology and postprandial nutrient processing is a highly size‐selective procedure. The digestive system of lobsters is predicated on grinding feed to a fine particle size before digestion. Therefore, fine pregrinding of raw materials may bypass the need for extensive grinding in the proventriculus and expedite digestive and absorptive processes. Panulirus ornatus juveniles (N = 56) were allocated to four feed groups (n = 14). Groups A, B and C were fed nutritionally identical feeds featuring raw materials ground to 1000 µm (Feed A), 500 µm (Feed B) and 200 µm (Feed C) while the fourth group (Group S) acted as a 24‐h nonfeeding baseline control group. Sequential postprandial haemolymph extractions were performed at 0.5, 1, 1.5, 2, 3.5, 5.5 and 24 h across treatment groups. Haemolymph samples were assessed and analysed for brix (%), total proteins (g L–1), glucose (mmol L–1) and cholesterol (mmol L–1). Brix was found to have significant positive correlations with all the haemolymph biochemical properties while no significant correlations were identified between individual lobster size and haemolymph properties. Analysis of deviance applied to mixed effects models did not identify significant differences in haemolymph properties across feed groups. Trends identified here are indicative of diurnal rhythm patterns, likely orchestrated by the release of the crustacean hyperglycaemic hormone (CHH) when anticipating a meal. Additionally, the use of brix values, may not be optimal for identifying postprandial trends, yet could remain a valid indicator of longer‐term nutritional status.

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Blood protein, blood volume and extracellular space relationships in two Penaeus spp. (decapoda: crustacea)

Cited by 47 publications

References 24 publications

Haemolymph protein composition and copper levels in decapod crustaceans

Haemolymph protein composition and copper levels in decapod crustaceans

Growth of tissues related to haemolymph copper throughout the moult cycle of the lobster Homarus gammarus

Postprandial nutrient dynamics and their implications for formulated feed development for the ornate spiny lobster (Panulirus ornatus)

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