Abstract
SEM observation revealed the detailed morphology of the gastric mill in ten species of euphausiids, Bentheuphausia amblyops, Thysanopoda acutifrons, Meganyctiphanes norvegica, Pseudeuphausia latifrons, Euphausia superba, Tessarabrachion oculatum, Thysanoessa longipes, Nematoscelis microps, Nematobrachion boopis, and Stylocheiron maximum. The well-developed gastric mill of euphausiids consists of a pair of cluster spines and a pair of lateral teeth displaying great diversity in morphology. It is suggested that there are three categories of gastric mill and filterpress (gland filter) within euphausiids. One is the well-developed gastric mill with filter-press of B. amblyops; a second is the well-developed gastric mill of M. norvegica, T. oculatum, E. superba, P. latifrons and T. longipes; and the third is the gastric mill without lateral teeth of T. acutifrons, N. microps, N. boopis and S. maximum.
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Dall, W., Moriarty, J. W. (1983). Functional aspects of nutrition and digestion. In: Mantel, L. H. (ed.) The biology of Crustacea 5. Academic Press, New York, p. 215–261
Felgenhauer, B. E., Abele, L. G. (1983). Phylogenetic relationships among the shrimp-like decapods (Penaeoidea, Caridea, Stenopodidea). In: Schram, F. R. (ed.) Crustacean issues 1: Crustacean phylogeny. Balkmema, Rotterdam, p. 291–311
Felgenhauer, B. E., Abele, L. G. (1985). Feeding structures of two Atyd shrimps, with comments on caridean phylogeny. J. Crust. Biol. 5: 397–419
Fryer, G. (1977). Studies on the functional morphology and ecology of atyd prawns of Dominica. Phil. Trans. R. Soc. Lond. B 277: 57–129
Ikeda, T., Nash, G. V., Thomas, P. G. (1984). An observation of discarded stomach with exoskeleton moult from Antarctic krill Euphausia superba Dana. Polar Biol. 3: 241–244
Kunze, J. (1981). The foregut of malacostracan Crustacea; functional morphology and evolutionary trends. Am. Zool 21: 966 (Abst.)
Kunze, J., Anderson, D. T. (1979). Functional morphology of the mouthparts and gastric mill in the hermit crabs Clibanarius taeniatus (Milne Edwards), Clibanarius virescens (Krauss), Paguristes squamosus (McCulloch) and Dardanus setifer (Milne-Edwards) (Anomura: Paguridae). Aust. J. mar. Freshwat. Res. 30:683–722
Mauchline, J. (1980). The biology of euphausiids. Adv. mar. Biol. 18:373–623
Mauchline, J., Fisher, L. R. (1969). The biology of euphausiids. Adv. mar. Biol. 7: 1–454
Meiss, D. F., Norman, R. S. (1977). Comparative study of the stomatogastric system of several decapod Crustacea. I. Skeleton. J. Morphol. 152: 21–53
Nemoto, T. (1966). Thysanoessa euphausiids, comparative morphology, allomorphosis and ecology. Sci. Rep. Whales Res. Inst. 20: 109–155
Nemoto, T. (1967). Feeding pattern of euphausiids and differentiations in their body characters. Inform. Bull. Plank. Japan, Commemoration, No. of Dr. T. Matsue, 157–171
Nemoto, T. (1977). Food and feeding structures of deep sea Thysanopoda euphausiids. In: Proc. Int. Symp. Sound Scattering in the Sea, Oceanic Sound Scattering Prediction. Plenum Press, New York, pp. 457–480
Partwardhan, S. S. (1934). On the structure and mechanism of the gastric mill in Decapoda. I. The structure of the gastric mill in Paratelphusa guerini (M. Edw.). Proc. Indian Acad. Sci. B 1: 183–196
Partwardhan, S. S. (1935a). On the structure and mechanism of the gastric mill in Decapoda. II. A comparative account of the gastric mill in Brachyura. Proc. Indian Acad. Sci. B 1: 359–375
Partwardhan, S. S. (1935b). On the structure and mechanism of the gastric mill in Decapoda. III. Structure of the gastric mill in Anomura. Proc. Indian Acad. Sci. B 1: 405–413
Parthwardhan, S. S. (1935c). On the structure and mechanism of the gastric mill in Decapoda. IV. The structure of the gastric mill in reptantous Macrura. Proc. Indian Acad. Sci. B 1: 414–422
Partwardhan, S. S. (1935d). On the structure and mechanism of the gastric mill in Decapoda. V. The structure of the gastric mill in natantous Macrura. Proc. Indian Acad. Sci. B 1: 693–704
Partwardhan, S. S. (1935e). On the structure and mechanism of the gastric mill in Decapoda. VI. The structure of the gastric mill in natantous Macrura: Penaeidea and Stenopidea; Conclusion. Proc. Indian Acad. Sci. B 2: 155–174
Powell, R. R. (1974). The functional morphology of the foreguts of the thalassinid crustaceans, Calianassa californiensis and Upogebia pugettensis. Univ. Calif., Berkeley, Publ. Zool 102: 1–41
Zimmer, C. (1913). Untersuchungen über den innerten Bau von Euphausia superba Dana. Zoologica (Stuttgart) 67: 65–128
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Communicated by M. Anraku, Tokyo
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Suh, H.L., Nemoto, T. Morphology of the gastric mill in ten species of euphausiids. Mar. Biol. 97, 79–85 (1988). https://doi.org/10.1007/BF00391247
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DOI: https://doi.org/10.1007/BF00391247