. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 JAMES W. TRUMAN AND LYNN M. RIDDIFORD 1961). In Drosophila (Kummer, 1960) and mosquitoes (Leahy and Craig, 1965) the transfer to the female of a secretion from the male accessory gland is respon- sible for the change. In the Lepidoptera (Klatt, 1920; Norris, 1933) and Hemi- ptera (Davey, 1965) the presence of sperm in the female spermatheca is apparently the trigger. The present findings on Cecropia are in substantial agreement with those re- ported for other Lepidoptera. Matings with castrated males involved the passage
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 JAMES W. TRUMAN AND LYNN M. RIDDIFORD 1961). In Drosophila (Kummer, 1960) and mosquitoes (Leahy and Craig, 1965) the transfer to the female of a secretion from the male accessory gland is respon- sible for the change. In the Lepidoptera (Klatt, 1920; Norris, 1933) and Hemi- ptera (Davey, 1965) the presence of sperm in the female spermatheca is apparently the trigger. The present findings on Cecropia are in substantial agreement with those re- ported for other Lepidoptera. Matings with castrated males involved the passage of a sterile spermatophore but did not cause the switch in behavior. Consequently, the presence of sperm itself appears to be the stimulus which triggers the trans- formation of behavior to the mated pattern. 100 80 60 40 20. 100 80 60 40 20 B DAYS FIGURE 2. The oviposition patterns of allatectomized-cardiectomized Cecropia females: A., females successfully mated to normal males—the open dots refer to those which had 5 pairs of allata-cardiaca complexes reimplanted; B, females mated to castrated males or unsuccessfully mated to normal males. 2. The endocrine relay: the corpora cardiaca The effect of mating on oogenesis is presumably mediated by the corpora allata (Engelmann, 1968). But in the case of the behavioral change, the involvement of the endocrine system has remained unexplored. The saturniids have proven to be convenient animals on which to study the change in oviposition behavior because in these insects egg maturation is independent of the corpora allata and the female moths emerge with essentially a full complement of eggs. Thus one circumvents any complications arising from a dependence of oviposition on oogenesis. As seen in the Results, the corpora cardiaca. but not the corpora allata are necessary for the behavioral change. After removal of the corpora allata-corpora. Please note that these images are extracted from scanned page images that may have been digit
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
