. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Jl'YEXILK HORMONE 365 hi all of the- preparations that molted, a new adult cuticle formed, irrespective of whether the molt occurred in the presence or of juvenile hormone. The new cuticle showed no trace of the reappearance of pupal characteristics even when the molt took place in the presence of sufficient juvenile hormone to cause the pupal partner to form a second pupal stage. This result is therefore different from that reported for Rhodnius where, according to Wigglesworth (1940, 1('5S), a partial. FIGURE 7. T
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Jl'YEXILK HORMONE 365 hi all of the- preparations that molted, a new adult cuticle formed, irrespective of whether the molt occurred in the presence or of juvenile hormone. The new cuticle showed no trace of the reappearance of pupal characteristics even when the molt took place in the presence of sufficient juvenile hormone to cause the pupal partner to form a second pupal stage. This result is therefore different from that reported for Rhodnius where, according to Wigglesworth (1940, 1('5S), a partial. FIGURE 7. The abdomen of a male Cecropia moth was joined with a previously chilled pupa of the Cecropia silkworm. Here, after four weeks at 25° C., the pupa has transformed into a moth, preserving numerous pupal characters. Meanwhile, the moth abdomen has fully molted its adult cuticle and formed a new cuticle of adult type, except for the absence of scales and hairs. ''reversal of metamorphosis" occurs when an adult is caused to molt in the presence of juvenile hormone. 4. Prolongation of adult life In all the species used in the present study the moths are unable to feed because of the absence of functional mouth parts. Therefore, they rarely survive at room temperature for more than a week. And yet, when beheaded and joined to dia- pausing pupae, these same moths routinely survived for many weeks, during which time one could elicit leg movements and the flapping of the wings. Even the most moribund moth, within a few hours of death, reacted to parabiosis with renewed vitality and 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, Car
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
