. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 130 BtiUcfin Museum of Comparative Zoology, Vol. 144, No. 3 ® 3 £ i 1 z c -â 0 Iâ 1^ I U |llllll]l III II ^ oi- ls ® g« u 5 " â I 11 Dec W nil i|nii iiii^ 21 31 Il|l illlilliilil ill 10 103 . lllllllllllllllllllllllli 10 20 Jan 30 _Lll iiJiiliLliliiiilli Feb 11 21 Mar 31. Figure 28. NwM, W ratio and rates of abortion and oviposition, colony 342. A. Ratio of nonworkers plus moles/workers (NwM/W). 6. Rate of abortion of larvae and pupae (larvae and pupae aborted per day). C. Rate of egg-eoting (eggs ea
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 130 BtiUcfin Museum of Comparative Zoology, Vol. 144, No. 3 ® 3 £ i 1 z c -â 0 Iâ 1^ I U |llllll]l III II ^ oi- ls ® g« u 5 " â I 11 Dec W nil i|nii iiii^ 21 31 Il|l illlilliilil ill 10 103 . lllllllllllllllllllllllli 10 20 Jan 30 _Lll iiJiiliLliliiiilli Feb 11 21 Mar 31. Figure 28. NwM, W ratio and rates of abortion and oviposition, colony 342. A. Ratio of nonworkers plus moles/workers (NwM/W). 6. Rate of abortion of larvae and pupae (larvae and pupae aborted per day). C. Rate of egg-eoting (eggs eaten per day). P := date first larva spun its cocoon. W =: date first adult female emerged. 2 = date no. 2 became sole egg- layer. 10 = date no. 10 became sole egg-loyer. 103 =: date no. 103 became sole egg-layer. D. Rate of oviposition (eggs laid per day). and constructing such a cell may affect the queen's reproductive physiology in such a way that eggs ripen at a slower rate. Thus, the faster eggs ripen, the more work is required to provide cells for them, and the more work that is done, the slower eggs ripen. This sort of a double feedback mechanism between reproductive physiol- ogy and work output is in accord with Pardi's hypothesis. On multiple-foundress colonies the task of cell initiation is taken over largely by the subordinates. The freeing of the queen from this task, plus the enhancing effects the domination of others has on ovarial development (Pardi, 1948b), could account for the increase in oviposition rate with number of co-foundresses. When the first larvae eclose the queen must assume the added tasks of foraging food for them and heightening their cells as they grow. This increase in the amount of work the queen must do could ha\e such an increased "castrating" effect on the queen that her rate of oviposition falls below the rate at which cells are emptied by egg-eating, and no new cells need be constructed to accommodate the few eggs she
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