Observations and Experiments on the Blow-fly (Calliphora erythrocephala) during the First Day after Emergence.
Article first published online: 21 AUG 2009
Proceedings of the Zoological Society of London
Volume 105, Issue 4, pages 893–904, September 1935
How to Cite
Fraekkel, G. (1935), Observations and Experiments on the Blow-fly (Calliphora erythrocephala) during the First Day after Emergence. Proceedings of the Zoological Society of London, 105: 893–904. doi: 10.1111/j.1469-7998.1935.tb06269.x
- Issue published online: 30 OCT 2009
- Article first published online: 21 AUG 2009
- Received October 17, 1935
- 1The digging movements of the freshly emerged flies have been described and analysed. Direction of digging is determined by light, but not by gravity.
- 2The process of the inflation of the fly with air and the expansion of the wings has been described and analysed. During digging these reactions are inhibited and postponed. Air-pumping occurs apparently independently from external and internal stimuli; it starts automatically a certain time after emergence and stops automatically after a certain period.
- 3It has been experimentally proved that the first filling of the air-sacs is due to negative pressure in the body arising from the diffusion of air out of the gut (in accordance with a hypothesis of Evans).
- 4Colouring and hardening of the skin are inhibited and postponed during prolonged digging.