Physiology of sulfide detoxification in the isopod Saduria (Mesidotea) entomon

Vismann, Bent

doi:10.3354/meps076283

Cited by 56 publications

(42 citation statements)

References 44 publications

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“…meiofauna: Powell et al 1979;Crustacea: Vetter et al 1987, Vismann 1991bfish: Bagarinao & Vetter 1989). Under aerobic conditions Halicryptus spinulosus is able to keep sulfide concentrations in the body low for a certain time, even at high external sulfide concentrations (200 P M ) Under this condition sulfide in body wall tissue increases slightly after 4 d probably due to a decreasing sulfide oxidation capacity.…”

Section: Discussionmentioning

confidence: 99%

Sulfide detoxification and tolerance in Halicryptus spinulosus (Priapulida): a multiple strategy

Oeschger¹,

Vetter²

1992

Mar. Ecol. Prog. Ser.

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Section: Discussionmentioning

confidence: 99%

Sulfide detoxification and tolerance in Halicryptus spinulosus (Priapulida): a multiple strategy

Oeschger¹,

Vetter²

1992

Mar. Ecol. Prog. Ser.

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“…S. entomon is known to be a predator and siphon-cropper of M. balthica (Ejdung & Bonsdorff 1992, Bonsdorff et al 1995, as well as of other infauna species (Sandberg & Bonsdorff 1990). S. entomon is tolerant of hypoxia, anoxia and hydrogen sulphide (Hagerman & Szaniawska 1990, 1992, Vismann 1991 and is abundant at mud sites together with M. balthica.…”

Section: Introductionmentioning

confidence: 99%

Burrowing behaviour of the Baltic clam Macoma balthica: effects of sediment type, hypoxia and predator presence

Tallqvist¹

2001

Mar. Ecol. Prog. Ser.

106

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Burial in sediment-dwelling clams is affected by morphological features, such as shell shape and size, but also by biotic and abiotic factors, such as predator presence, oxygen deficiency and sediment characteristics. In the Baltic Sea, oxygen deficiency is a severe problem not only in the deep basins, but also in the shallow coastal areas, due to eutrophication. In the species-poor Baltic Sea, the bivalve Macoma balthica (L.) is a key species in both shallow and deep bottoms. This paper analyzes the impact of biotic and abiotic factors on the burrowing behaviour of M. balthica. Experiments were conducted to study the importance of sediment type, hypoxia, predator presence and algal mats on the burrowing behaviour (start of burial and burial velocity) of M. balthica. Results show that sediment type and the presence of the predatory isopod Saduria entomon did not affect the burrowing behaviour of M. balthica. In contrast, the burrowing behaviour was negatively influenced by hypoxia and drifting algae. Physical disturbance and oxygen decifiency are important forces that may displace M. balthica in the sediment and make it susceptible to predators at the sediment surface. Burial in the sediment is the only way in which infauna bivalves may escape predators, and this study shows that burrowing capability can be affected by poor environmental conditions.

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“…Leonardsson et al 1987, Hagerman & Szaniawska 1988, 1990, 1991, 1992, Haahtela 1990, Vismann 1991. These studies have revealed S. entomon to be a most adaptable species with an exceptional tolerance of anoxia and hydrogen sulphide concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…Although the respiratory responses of Saduria entomon have been studied intensively (Hagerman & Szaniawska 1988, 1990, 1991, 1992, the origin and fate of the nitrogenous end products of this species are not well known. The purpose of the present study was thus to investigate ammonia efflux rates and haemolymph nitrogen compounds under anoxia in S. entomon.…”

Section: Introductionmentioning

confidence: 99%

Haemolymph nitrogen compounds and ammonia efflux rates under anoxia in the brackish water isopod Saduria entomon

Hagerman¹,

Szaniawska²

1994

Mar. Ecol. Prog. Ser.

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Production and excretion of nitrogenous end products was studied in the benthic Baltic isopod Saduria entomon (L.) under normoxic and anoxic conditions. S. entomon is ammonotelic.Normoxic haemolymph ammonia concentrations were 176 + 53 (SD) pm01 NH.,; I-' decreasing with time to 50 pm01 NH,' 1-' after 120 h anoxia. Normoxic ammonia efflux rate was 0.53 i-0.07 (SD) pm01 NH,' g-' h-', decreasing 90% after 96 h anoxia. Normoxic haemolymph urate amounted to 135 pm01 I-', increasing after 120 h under anoxia to 741 + 79 (SD) pm01 l-' Haemolymph urate concentrations were relatively high because of the ammonia excretion and an undetectable urate excretion even under anoxia. Circulating free amino acids also increased progressively under anoxia, from the normoxic 28 to 165 mm01 1'' after 96 h anoxia. This increase was largely due to accumulation of alanine as a result of an anaerobic metabolism. Ammonia was calculated to be the quantitatively dominat~ng nitrogenous end product in S. entomon. An effective efflux of ammonia prevents an excessive build-up of toxic ammonia in the haemolymph.

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Physiology of sulfide detoxification in the isopod Saduria (Mesidotea) entomon

Cited by 56 publications

References 44 publications

Sulfide detoxification and tolerance in Halicryptus spinulosus (Priapulida): a multiple strategy

Sulfide detoxification and tolerance in Halicryptus spinulosus (Priapulida): a multiple strategy

Burrowing behaviour of the Baltic clam Macoma balthica: effects of sediment type, hypoxia and predator presence

Haemolymph nitrogen compounds and ammonia efflux rates under anoxia in the brackish water isopod Saduria entomon

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