Abstract
ALTHOUGH considerable work has been done on the digestive enzymes of snails and mussels1, very little is known about those of the marine chitons. Fretter, working with the two British species, Lepidochitona cinereus Gray and Acanthochilona crinitus Gray, has reported2 that the fluid in the sugar gland (a pouch-shaped organ connected with the œsophagus) hydrolyses starch, with a pH optimum at 5.6, and glycogen, with a pH optimum at 6.4–6.8.
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References
Florkin, M., Lozet, F., Arch. Internat. Physiologie, 57, 201 (1949). Jeuniaux, Ch., Mém. Acad. Roy. Belg., 28, 1 (1954).
Fretter, V., Trans. Roy. Soc. Edin., 59, 119 (1937).
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MEEUSE, B., FLUEGEL, W. Carbohydrases in the Sugar-Gland Juice of Cryptochiton (Polyplacophora, Mollusca). Nature 181, 699–700 (1958). https://doi.org/10.1038/181699a0
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DOI: https://doi.org/10.1038/181699a0
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