. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 450 NELLIE M. PAYNE. not self dehydrating to any large extent. Thus the Japanese beetle, Popillia japonica Newm., does not exhibit any marked body weight changes over winter when kept in moist sur- roundings, but can be experimentally dehydrated to half its body weight. When thus treated they are very cold resistant, having a survival temperature of as low as - - 28° C. In contrast 900 \ \ \ \ 600 v . 700 FALL DEHYDRATION CURVES OF TWO SPECIES OF CATERPILLARS laia 400 ^V Diacrisia virginica. 300 200 100 ' £ 4567 TIME IN WEEK
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 450 NELLIE M. PAYNE. not self dehydrating to any large extent. Thus the Japanese beetle, Popillia japonica Newm., does not exhibit any marked body weight changes over winter when kept in moist sur- roundings, but can be experimentally dehydrated to half its body weight. When thus treated they are very cold resistant, having a survival temperature of as low as - - 28° C. In contrast 900 \ \ \ \ 600 v . 700 FALL DEHYDRATION CURVES OF TWO SPECIES OF CATERPILLARS laia 400 ^V Diacrisia virginica. 300 200 100 ' £ 4567 TIME IN WEEKS FIG. i. Fall dehydration curves of two species of caterpillars, Isia Isabella and Diacrisia virginica. to the Japanese beetle larvae there are some species of oak borers and caterpillars which are normally self dehydrating during the winter. The dehydration curves (Fig. i) of Isia Isabella Hy. Edw. and Diacrisia virginica Fabr. show a marked water loss as these caterpillars go into hibernation. At the period of inflection. 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, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
