. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ACETYLCHOLINE AND AUTOTOMY IN ANOMURANS 409 to two minutes, extreme activity followed by tetanic convulsions and death. The injection of gamma caused greatly increased general activity and uncoordinated movements followed by sluggishness, failure to autotomize, and the death of some animals. A dose of gamma caused increased activity for a few minutes after injection, but following this the reactions of the majority of the animals appeared normal. This amount was administered to fifty animals in groups of ten, and te
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ACETYLCHOLINE AND AUTOTOMY IN ANOMURANS 409 to two minutes, extreme activity followed by tetanic convulsions and death. The injection of gamma caused greatly increased general activity and uncoordinated movements followed by sluggishness, failure to autotomize, and the death of some animals. A dose of gamma caused increased activity for a few minutes after injection, but following this the reactions of the majority of the animals appeared normal. This amount was administered to fifty animals in groups of ten, and ten to fifteen minutes later their legs were stimulated as were those of the con- trols. The results may be seen in Fig. 3. The eserine curve is quite too 5 O K O 50 Ul O <t UJ Q. ESERINE. Z 3 LEGS 4567 STIMULATED FIG. 3. Percentage autotomy in 50 animals injected with gamma of eserine sulphate and their legs stimulated ten to fifteen minutes after injection. similar to the one obtained for acetylcholine, except that it is slightly lower and shifted somewhat to the left clue to a lower percentage of autotomies in all except the last two legs to be stimulated. The impor- tant points, however, are the absence of a period of increasing tendency to autotomize, and the large number of autotomies (95 per cent) of first legs to be stimulated. Atropine.—Relatively large doses of atropine had to be injected be- fore definite effects were obtained. Amounts above 100 gamma caused marked sluggishness and prevented all autotomies during a period of fifteen minutes after injection. A dose of 100 gamma resulted in de-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray,
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
