. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 146 CHARLES G. KURLAND AND HOWARD A. SCHNEIDERMAN the development of injury respiration. Similar results were obtained with Prome- thea pupae. These results are in general agreement with those of Schneiderman and Williams (1954b), who reported that the repair of injury was CO-sensitive. How- ever, their experiments failed to detect the CO-sensitivity of the respiration as- sociated with repair of injury, presumably because they employed only small injuries. Such CO-sensitivity was demonstrated by Harvey and Shappirio (Harvey
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 146 CHARLES G. KURLAND AND HOWARD A. SCHNEIDERMAN the development of injury respiration. Similar results were obtained with Prome- thea pupae. These results are in general agreement with those of Schneiderman and Williams (1954b), who reported that the repair of injury was CO-sensitive. How- ever, their experiments failed to detect the CO-sensitivity of the respiration as- sociated with repair of injury, presumably because they employed only small injuries. Such CO-sensitivity was demonstrated by Harvey and Shappirio (Harvey, 1956) who pointed out that after very large injuries respiration becomes sensitive to car- bon monoxide. This is confirmed in the following experiment summarized in UJ £ 1200 - 1100 - < 1000- 20°- 5XIO o CM O 100 - IO~* IO~ AZIDE AZIDE. B FIGURE 7. The azide-sensitivity of DNP-stimulated respiration. (A) Four diapausing Cynthia pupae were injected with 10~4 M DNP, four with M sodium azide, and four with both reagents. The average Oa consumption over a three-hour period is recorded. (B) Five pupae were injected with 5 X It)"4 M DNP, five with 5 X It)"4 M sodium azide and five with both reagents. The average O2 consumption over a three-hour period is recorded. The average initial oxygen consumption of the pupae in (A) and (B) was live Figure 9. Four brainless Cynthia pupae were injured by removing the pupal legs and after three days, when they had developed a large injury respiration, the CO- sensitivity of their respiration was determined. About two-thirds of the injury respiration was inhibited by carbon monoxide. Similar results were obtained with Cecropia pupae. It can also be seen in Figure 9 (as well as in Figure 6) that the oxygen uptake of pupae respiring at a rapid rate was limited by the low oxygen tension. This contrasts with the respiratory behavior of pupae with low metabolic rates, where 5 per cent
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