Seasonal variations in biochemical composition of mytilus edulis with reference to energy metabolism and gametogenesis

Zandee, D.I.; Kluytmans, J.H.; Zurburg, W.; Pieters, H.

doi:10.1016/0077-7579(80)90011-3

Cited by 210 publications

(80 citation statements)

References 25 publications

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“…Mussels hving under favourable conditions accumulate carbon, i.e, glycogen, through summer to autumn (Seed, 1969;De Zwaan & Zandee, 1972;Gabbot & Bayne, 1973), and attain a high content of glycogen relative to protein in autumn. The glycogen is catabohzed when food becomes scarce during late autumn and winter (Dare & Edwards, 1975;Bayne & Scullard, 1977;Zandee et al, 1980;Hawkins & Bayne, 1985). In this population, however, both a constant C/N-raUo and the decline in condition index in summer (Figs 3,6) indicate that glycogen is not accumulated to any great extent.…”

Section: Schliiter and S B Josefsenmentioning

confidence: 75%

“…It adapts to survive under extremely varied conditions (Seed, 1969) and tolerates large fluctuations in dry weight (Kautsky, 1982) and body mass composition (Zwaan & Zandee, 1972;Dare & Edwards, 1975;Zandee et al, 1980). Growth, condition, reproduction, and metabolic rates of a population are integrated responses of adaptation to the environment, and several factors influence mussels' growth and survival in marginal environments.…”

Section: Introductionmentioning

confidence: 99%

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Annual variation in condition, respiration and remineralisation ofMytilus edulis L. in the Sound, Denmark

Schlüter

Josefsen

1994

Helgolander Meeresunters

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By means of monthly in situ incubations, variations in oxygen uptake, nutrient release and C/N-ratio were monitored during a period of 14 months of a mussel population (Mytilus edulis L.) located on an exposed beach. A condition index calculated as weight/length 3 showed that the condition of the mussels was highest in the spring. Specific oxygen uptake and nutrient release had separate maxima, with high oxygen uptake in the spring coinciding with a period of growth, and high nutrient release during summer when the temperature was highest. Oxygen uptake was significantly correlated with both the condition of the mussels and the temperature, while ammonium release was significantly correlated only with the temperature. Except in spring, the oxygen uptake, condition index and O/N-ratio were low, indicating a poor condition of the mussels. The mussels suffered from suboptimal conditions caused by inadequate food supply and failed to accumulate glycogen reserves essential for the development of mature gametes.

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Section: Schliiter and S B Josefsenmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Annual variation in condition, respiration and remineralisation ofMytilus edulis L. in the Sound, Denmark

Schlüter

Josefsen

1994

Helgolander Meeresunters

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“…Some investigators looked at temperature-induced changes in biochemical tissue composition depending on the season. Zandee et al (1980) for instance showed that the concentrations of proteins, glycogen and lipids in the muscles of Mytilus edulis rose in autumn. In winter at low temperatures these stores were broken down.…”

Section: Introductionmentioning

confidence: 99%

Energy metabolism and ATP free-energy change of the intertidal worm Sipunculus nudus below a critical temperature

Zielinski¹,

Pörtner²

1996

Journal of Comparative Physiology B: Biochemical, Systemic, and

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The intertidal worm Sipunculus nudus was exposed to various temperatures for an analysis of the integrated changes in energy and acid-base status. Animals were incubated in sea water or maintained for up to 8 days at 4 and 0°C while dwelling in the sediment. Cannulation of the animals prior to experimentation allowed the analysis of blood gas parameters (P -, P !-and pH). P -fell to 0 torr within 8 days at 0°C. A simultaneous reduction of ventilatory activity was derived from measurements of the pattern of coelomic fluid pressure changes associated with ventilatory movements. The increase in P !-and an onset of anaerobic metabolism, indicated by the accumulation of end products like acetate and propionate both in the coelomic fluid and the body wall musculature, led to the development of a progressive acidosis and a deviation from the alphastat regulation of intracellular pH seen in unburied animals. The drop in intracellular pH together with the depletion of the adenylates and the phosphagen, phospho-L-arginine, reflect a significant decrease in the Gibb's free-energy change of ATP hydrolysis. These changes are interpreted to indicate lethal cold injuries, because recovery was not possible when the animals were returned to 12°C after more than 2 days of exposure to 0°C. A low critical temperature indicating the onset of cold-induced anaerobiosis is concluded to exist below 4°C owing to the insufficient response of the ventilatory system to the developing hypoxia.

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“…Freshwater and marine bivalves display marked seasonal variations in weight and biochemical content of the soft tissue (Giese et al 1967, Trevallion 1971, Ansell 1972, Gabbott and Bayne 1973, Beukema and de Bruin 1977, Dietz and Stem 1977, Zandee et al 1980, Williams and McMahon 1989 that are related to the considerable energetic demands of gametogenesis. Bivalves build up stores of energy in body tissues and then deplete these stores during the production and eventual release of gametes.…”

Section: Introductionmentioning

confidence: 99%

Seasonal and Annual Variation in Weight and Biochemical Content of the Zebra Mussel, Dreissena polymorpha, in Lake St. Clair

Nalepa

Cavaletto

Ford

et al. 1993

Journal of Great Lakes Research

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Seasonal variations in biochemical composition of mytilus edulis with reference to energy metabolism and gametogenesis

Cited by 210 publications

References 25 publications

Annual variation in condition, respiration and remineralisation ofMytilus edulis L. in the Sound, Denmark

Annual variation in condition, respiration and remineralisation ofMytilus edulis L. in the Sound, Denmark

Energy metabolism and ATP free-energy change of the intertidal worm Sipunculus nudus below a critical temperature

Seasonal and Annual Variation in Weight and Biochemical Content of the Zebra Mussel, Dreissena polymorpha, in Lake St. Clair

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