NITROGEN EXCRETION BY THE SPINY LOBSTER<i>JASUS EDWARDSI</i>(HUTTON): THE ROLE OF THE ANTENNAL GLAND

Binns, R.; Peterson, A. J.

doi:10.2307/1539809

Cited by 22 publications

(10 citation statements)

References 17 publications

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“…Ammonia makes up 70 to 87% of total excreted nitrogen in marine amphipods (Dresel & Moyle 1950), 60 to 100% in the copepods Calanus helgolandicus (Corner & Newel1 1967) and Tigriopus brevicornis (Harris 1973), 72% in spiny lobster Fasus edwardsi (Binns & Peterson 1969), 86% in Carcinus maenas (Needham 1957) and 95 % in Atlantic ditch shrimp Palaemontes varians (Snow & Williams 1971) and common shrimp Crangon crangon (Regnault 1983). Regnault (1987) reported that in decapod crustaceans, ammonia and amino acid accounted for 60 to 70 and 10 % respectively of total nitrogen excreted.…”

Section: 9472c + 5421 1 3 S (R2 = 046)mentioning

confidence: 99%

Nitrogen excretion and changes of hemocyanin, protein and free amino acid levels in the hemolymph of Penaeus monodon exposed to different concentrations of ambient ammonia-N at different salinity levels

Chen¹,

Chen²,

Cheng³

1994

Mar. Ecol. Prog. Ser.

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ABSTRACT. Penaeus monodon (22.064 * 2.263 g) were exposed individually at 10, 20 and 30% salinity to 0 (control), 1, 5, 10 and 20 mg 1-' ammonia-N for 24 h. Changes in hemocyanin, protein and free amino acid levels, and whole shrimp ammonia-N excretion, urea-N excretion and dissolved organic N (DON) excretion were determined. Ammonia-N excretion decreased with increased salinity and with increased ambient ammonia-N. Ammonia-N accounted for 56.87. 70.43 and 78.13 % of total nitrogen excreted by P. monodon in 30, 20 and 10% respectively. DON increased to 67.26, 78.79 and 86.1% of total nitrogen excreted by the shrimp exposed to 20 mg 1-' ammonia-N in 30, 20 and 10°A, respectively. Net ammonia-N uptake occurred as shrimp were exposed to ambient ammonia-N greater than 5 mg 1-I at all salinity levels tested. Hemocyanin and protein levels decreased, whereas hemolyrnph ammonia, urea, total free amino acid levels and taurine level increased, with increased ambient ammonia-N. Following exposure to ambient ammonia-N, P. rnonodon changed its excretory pattern, accumulation of hemolymph ammonia, and catabolism of hemocyanin and protein to balance osmoregulation.

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Section: 9472c + 5421 1 3 S (R2 = 046)mentioning

confidence: 99%

Nitrogen excretion and changes of hemocyanin, protein and free amino acid levels in the hemolymph of Penaeus monodon exposed to different concentrations of ambient ammonia-N at different salinity levels

Chen¹,

Chen²,

Cheng³

1994

Mar. Ecol. Prog. Ser.

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“…They have this feature in common with most aquatic invertebrates and with teleost fishes. Ammonia makes up from 70% to 87% of the total excreted nitrogen in marine (Corner & Newell, 1967) and Tigriopus brevicornis (Harris, 1973), 72 yo in the spiny 1obsterJasus edwardsi (Binns & Peterson, 1969), 86 in the crab Carcinus maenas (Needham, 1957) and around 95% in the shrimps Palaemonetes varians (Snow & Williams, 1971) and Crangon crangon (Regnault, 1 9 8 3~) ( Table I ) . Ammonia formation is considered to be the most primitive system for nitrogen output and the least expensive with regard to energy expenditure (Forster and Goldstein, 1969).…”

Section: End-products Of Nitrogen Metabolismmentioning

confidence: 99%

Nitrogen Excretion in Marine and Fresh‐water Crustacea

1987

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Summary 1. The major characteristic of aquatic Crustacea is ammonotelism as shown by the relative importance of various nitrogenous end‐products of their nitrogen metabolism. 2. In contrast to urico‐ and ureo‐genesis pathways, ammoniogenesis pathways have received recent attention; some specific enzymes such as glutamate dehydrogenase, AMP‐deaminase and glutaminase are now admitted to play a possible key role in ammoniogenesis of various crustacean species. 3. Processes involved in ammonia output through the gill epithelium (diffusion and/or ionic exchanges) are discussed though few data related to Crustacea are as yet available compared to those obtained in ammonotelic fishes. 4. The effects of some environmental factors as well as the physiological state of animals on nitrogen excretion of Crustacea are envisaged. The effects of temperature, salinity and NH4 concentration in the external medium are discussed first, followed by the changes in nitrogen excretion associated with the moult cycle, the nutritional state of animals and possible neuroendocrine control. It is demonstrated that the response of the excretion rate to these factors presents various patterns according to the species, its osmoregulatory abilities and its body reserves. Changes can also occur in the requisite metabolic pathways, thus increasing the difficulty of generalization. 5. In spite of the great diversity encountered within Crustacea an attempt to bring out general trends of their nitrogen excretion is proposed. 6. The present review is focused on metabolic and physiological aspects of crustacean nitrogen excretion but the significance of nitrogen release in nutrient regeneration in marine and fresh‐water ecosystems is foreseen.

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“…The proportion of ammonia excreted via the urinary bladders is very small: 1 to 2% of the total amount produced in Callinectes sapidus (Cameron and Batterton 1978), <2% in Jasus edwardsii (Binns and Petersen 1969), and negligible in Carcinus maenas (Harris and Andrews 1985). Because of its relatively small contribution to the total amonia efflux (cf.…”

Section: Introductionmentioning

confidence: 99%

Some effects of hypoxia and medium ammonia enrichment on efflux rates and circulating levels of ammonia inNephrops norvegicus

Hosie

Uglow

Hagerman³

et al. 1991

Mar. Biol.

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Abstract. Eutrophication has been reported for autumn months in regions of the Kattegat/Skagerrak, causing stress to bottom-living organisms. The present studies, undertaken in April (1989), investigated the effects of hypoxia and high ammonia levels in the burrowing decapod Nephrops norvegicus (L.). The net ammonia efflux rates and circulating ammonia levels at 6 and 12°C, at normoxia [partial pressure of 02 in the water (torr), Pw02 = 155 torr)] and hypoxia P, vO2 = 24 torr) in normal seawater and ammonia-enriched (300 #mol ammonia 1-t) seawater were examined. The hourly weight-specific efflux rates were very variable and in all groups included some individuals which showed periods of no net efflux, or even a net uptake of ammonia. At each temperature, net efflux-rate differences due to treatments were not significant (P>0.05; ANOVA, in all cases) and only the differences between the net efflux rates of the normoxic groups were significantly affected by temperature (P < 0.05; ANOVA). Circulating ammonia levels were also variable, and at 6°C the ammonia-enriched groups had significantly higher weight-specific blood ammonia content values than the normoxic group (P < 0.05 in both cases). A net uptake of ammonia occurred in ammoniaenriched conditions -probably along a reversed NH4 + gradient, as downhill pNH 3 gradients were maintained in all groups -and may represent the only means by which some branchial efflux of ammonia could proceed.

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NITROGEN EXCRETION BY THE SPINY LOBSTERJASUS EDWARDSI(HUTTON): THE ROLE OF THE ANTENNAL GLAND

Abstract: N. Z. SUMMARY 1. Nitrogen excretion by Jasus edivardsi has been investigated. 2. Ammonia nitrogen accounted for 72% of total nitrogen excreted.

Cited by 22 publications

References 17 publications

Nitrogen excretion and changes of hemocyanin, protein and free amino acid levels in the hemolymph of Penaeus monodon exposed to different concentrations of ambient ammonia-N at different salinity levels

Nitrogen excretion and changes of hemocyanin, protein and free amino acid levels in the hemolymph of Penaeus monodon exposed to different concentrations of ambient ammonia-N at different salinity levels

Nitrogen Excretion in Marine and Fresh‐water Crustacea

Some effects of hypoxia and medium ammonia enrichment on efflux rates and circulating levels of ammonia inNephrops norvegicus

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