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| Content Provider | Springer Nature Link |
|---|---|
| Author | Spieß, Roland Rose, Uwe |
| Copyright Year | 2004 |
| Abstract | Abdominal motoneurones of the locust Locusta migratoria were investigated in immature, mature and allatectomised females to compare their response characteristics during reproductive development. These motoneurones were chosen because they control muscles which are involved in extreme lengthening during egg-laying behaviour. The study focused on changes in motoneurone firing activity and its possible regulation by juvenile hormone. In isolated nerve-muscle preparations, increased resting motor activity was found in mature (>14 days) but not in immature females (<5 days). Removing the corpora allata, the gland producing juvenile hormone in insects, prevented increased motor activity. Stimulus evoked activation of the motor system led to a characteristic burst of action potentials which lasted for a few seconds. The time-course and amount of activation changed significantly during reproductive development. Mature females displayed longer lasting and higher activity than immature or allatectomised females, but only those segments involved in egg-laying were found to express the altered firing properties. Single cell analysis of motoneurone dendritic morphology or membrane properties revealed no evidence that could be causative for the activity changes seen during reproductive development. The results suggest that altered motoneurone activity serves to adapt females to the neuromuscular requirements of egg-laying behaviour. |
| Starting Page | 883 |
| Ending Page | 894 |
| Page Count | 12 |
| File Format | |
| ISSN | 03407594 |
| Journal | Journal of Comparative Physiology A |
| Volume Number | 190 |
| Issue Number | 11 |
| e-ISSN | 14321351 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2004-08-18 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Insect Motoneurone Juvenile hormone Reproductive development Oviposition behaviour |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
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