Physiological responses of Mytilus edulis and Cardium edule to aerial exposure

1985 ◽  
Vol 85 (3) ◽  
pp. 217-232 ◽  
Author(s):  
J. Widdows ◽  
J. M. Shick
Keyword(s):  
Mytilus Edulis ◽  
Physiological Responses ◽  
Aerial Exposure

Physiological responses of postprandial red rock crabs (Cancer productus) during emersion

2009 ◽  
Vol 87 (12) ◽  
pp. 1158-1169 ◽  
Author(s):  
I. J. McGaw ◽  
D. L. Curtis ◽  
J. D. Ede ◽  
K. J. Ong ◽  
F. van Breukelen ◽  
...  
Keyword(s):  
Physiological Responses ◽  
Anaerobic Respiration ◽  
Mortality Rates ◽  
Ammonia Concentration ◽  
Aerial Exposure ◽  
Cancer Productus ◽  
Intracellular Digestion ◽  
Low Levels ◽  
Effect Of Feeding ◽  
High Lactate

The physiological responses of unfed and postprandial red rock crabs ( Cancer productus J.W. Randal, 1840) were investigated during periods of emersion. During aerial exposure, oxygen uptake quickly fell to very low levels and was no longer detectable in the haemolymph after 12 h. The resulting anaerobic respiration led to a build up in lactic acid and the resulting acidosis was more pronounced in the postprandial crabs. There was also a concomitant rise in PCO2 and CCO2, and in both cases these were higher in postprandial animals. Higher ammonia levels in postprandial crabs showed that cellular activities were still proceeding anaerobically, suggesting that although crabs can delay mechanical digestion during emersion, once intracellular digestion occurs they may be committed to these processes. Increased mortality rates of postprandial animals were probably due to a combination of the high lactate and CO2 levels coupled with an increased ammonia concentration. For C. productus stranded in the intertidal zone there may be little effect of feeding, as they are only exposed for short periods and recovery occurs during re-immersion. The crabs are more likely to become moribund and death ensue during longer term exposure such as commercial live shipment.

Food resource, gametogenesis and growth of Mytilus edulis on the shore and in suspended culture: Killary Harbour, Ireland

1984 ◽  
Vol 64 (3) ◽  
pp. 513-529 ◽  
Author(s):  
P. G. Rodhouse ◽  
C. M. Roden ◽  
G. M. Burnell ◽  
M. P. Hensey ◽  
T. McMahon ◽  
...  
Keyword(s):  
Mytilus Edulis ◽  
Shell Growth ◽  
Larval Settlement ◽  
Food Resource ◽  
Early Spring ◽  
Growth Patterns ◽  
Aerial Exposure ◽  
Annual Cycles ◽  
Detrital Carbon ◽  
Settlement Growth

Mussels, Mytilus edulis L. grow on the shore and are cultured on ropes in Killary Harbour, a fjordic inlet on the Irish west coast. The food resource available to cultured mussels differs from that available to wild mussels on the shore. Although phytoplankton densities as estimated from chlorophyll a concentrations are similar, the shore environment in the inner part of the inlet is characterized by high mean POC concentrations. This is because of the presence of variable amounts ofallochthonous detrital carbon.The annual cycles of flesh weight and ash content of wild and cultivated mussels were followed over two years. These cycles were related to the reproductive cycle observed by taking histological samples of mussel gonad, by plankton sampling for larvae and by monitoring larval settlement. Shell growth was measured in wild mussels by reading seasonal growth patterns on sectioned shells and in cultured mussels by following progress of the modal shell length of cohorts on ropes.Wild mussels have a partial spawning in early spring and spawn completely in the summer. Cultured mussels spawn twice during the summer, in the year following settlement. Growth rate of wild mussels decreases with increasing aerial exposure. The fastest growing mussels, at o % exposure, take about 6 years to attain the length attained by the mode of the cultured mussels after 18 months, when they are harvested.We conclude that wild mussels utilize a mix of phytoplankton and detritus as food during the summer and that large wild mussels can use detritus during the autumn and early winter for an increase in flesh weight and gametogenesis.

The effects of copper on the behaviour, respiration, filtration and ventilation activity of Mytilus edulis

1983 ◽  
Vol 63 (1) ◽  
pp. 205-222 ◽  
Author(s):  
Andrew R. Manley
Keyword(s):  
Oxygen Consumption ◽  
Mytilus Edulis ◽  
Copper Concentration ◽  
Sea Water ◽  
Physiological Responses ◽  
Indirect Measurement ◽  
Behavioural Responses ◽  
Adductor Muscles ◽  
Rate Of Increase ◽  
The Absolute

The behaviour and physiological responses of Mytilus edulis L. to increased concentrations of copperare dependent on the absolute copper concentration present and not the rate of increase of concentration. The sequence of behavioural responses isolating the animal from heightened sea-water copper concentration is similar to that observed in response to lowered salinities. The effects of copper onthe oxygen consumption of intact and ‘propped open’ and animals whose posterior adductor muscles havebeen severed suggest that only measurements of animals in the latter state give a true reflexion of the effects of copper on the oxygen consumption of the tissues of Mytilus. The effects of increased sea-water copper concentrations on the filtration and ventilation activity of mussels are assessed, but consideration of the data in terms of Dejour's equation of gaseous exchangesuggest that indirect measurement of ventilation activity gives rise to differing results. The adaptive advantage of theresponse of Mytilus to heightened sea-water copper concentrations is considered.

Depicting an energetic chain involved in physiological responses of blue mussel Mytilus edulis coping with BDE-47 exposure

Chemosphere ◽  
2020 ◽  
pp. 128736
Author(s):  
Yongshun Jiang ◽  
You Wang ◽  
Tianli Sun ◽  
Keyu Lu ◽  
Xinyu Zhao ◽  
...  
Keyword(s):  
Mytilus Edulis ◽  
Blue Mussel ◽  
Physiological Responses

Physiological responses of mytilus edulis on exposure to a pharmaceutical effluent in the laboratory and in the field

1989 ◽  
Vol 28 (1-4) ◽  
pp. 541-542
Author(s):  
Brian D. Roddie ◽  
R. Butler ◽  
C.P. Mainstone ◽  
P. Waxman ◽  
K. Horne
Keyword(s):  
Mytilus Edulis ◽  
Physiological Responses

Physiological responses of Mytilus edulis L. to parasitic infestation by Mytilicola intestinalis

1978 ◽  
Vol 38 (1) ◽  
pp. 12-17 ◽  
Author(s):  
B. L. Bayne ◽  
J. M. Gee ◽  
J. T. Davey ◽  
C. Scullard
Keyword(s):  
Mytilus Edulis ◽  
Physiological Responses ◽  
Parasitic Infestation
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