Abstract
ABSTRACT. The xeric grasshopper Oedipoda germanica pyrenaica (Uvarov, 1936) has a daily cycle of water‐gain from feeding during the afternoon and water‐loss at night. The afternoon peak of water‐gain in laboratory animals is correlated with a short‐term rise in the osmotic pressure of the haemolymph in field animals. It is estimated that starved large animals would deplete their water reserves within 8–11 days. Water loss in faeces production is a major component of total water loss only during the late afternoon to early evening; at all other times transpiratory water losses are considerably greater. Overall, 23% of the daily water loss occurs through the faeces. From hindgut cannulation experiments, c. 80% of water entering the rectum is reabsorbed. A comparison of transpiratory water losses of xeric and mesic Orthoptera and some xeric Coleoptera revealed that water losses are some 6–7 times higher in Orthoptera than in similar sized Coleoptera.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
