Production and excretion of volatile fatty acids in the sea musselMytilus edulis L.

Organ specific changes in energy metabolism due to anaerobiosis in the sea mussel Mytilus edulis (L.)

“…4). Since moreover no excretion of succinate has been observed (Kluytmans et al, 1978), it can be argued that succinate accumulates only in the tissues and is not transported. Nevertheless, we cannot exclude that succinate present in the hemolymph could be taken up rapidly by some organ(s) and converted into propionate, which would keep the succinate level in the hemolymph low.…”

“…For Mytilus edulis fluctuations in energy substrates such as glycogen, proteins and lipids have been followed during the annual cycle in several organs (Zurburg et al, 1979). The accumulation of glycolytic end products in different organs of M. edulis has been investigated by Kluytmans et al (1977Kluytmans et al ( , 1978. After longer periods of anoxia excretion of volatile fatty acids (acetate and propionate) is observed (Kluytmans et al, 1978), when the mussels are incubated in seawater without oxygen.…”

“…The accumulation of glycolytic end products in different organs of M. edulis has been investigated by Kluytmans et al (1977Kluytmans et al ( , 1978. After longer periods of anoxia excretion of volatile fatty acids (acetate and propionate) is observed (Kluytmans et al, 1978), when the mussels are incubated in seawater without oxygen. As transport of end products to the environment can occur, internal transport phenomena can be expected.…”

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

“…2). While litde is known on a possible relation between salinity and anaerobic metabolism, it is known that temperature affects succinate formation, and especially its conversion to propionate (KLuYTMANS et al, 1978). It therefore seems likely that the observed circannual changes in propionate synthesis are induced by changes in the environmental temperature, rather than by salinity changes.…”

Genotoxic effects of anoxia on Mytilus galloprovincialis

“…Thus we can plausibly suppose that these acids could be the cause of the increase in micronucleus frequency detected in anoxic mussels. Kluytmans et al (1978Kluytmans et al ( , 1980 showed that in 2 d airexposed mussels, the acetate production is not influenced by the thermal trend while the lag period between the onset of anoxia and the beginning of propionate synthesis as well as the rate of its synthesis are strongly temperature dependent. Consequently the slower increment in micronucleus frequency observed in anoxic animals at 10 ' C as compared with those at 25 "C (Fig.…”