Functional Role of Peptidergic Anterior Lobe Neurons in Male Sexual Behavior of the SnailLymnaea stagnalis
| Autor: | Makoto Kurokawa, Andries Ter Maat, Pamela A.C.M. De Boer, Roger P. Croll, René F. Jansen, Anton W. Pieneman |
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| Rok vydání: | 1997 |
| Předmět: |
Male
medicine.medical_specialty animal structures Microinjections Vasopressins Physiology Period (gene) Neuropeptide Lymnaea stagnalis Stimulation Snail Sexual Behavior Animal Internal medicine biology.animal medicine Animals Body cavity Lymnaea Neurons biology General Neuroscience Neuropeptides biology.organism_classification Ganglia Invertebrate medicine.anatomical_structure Endocrinology Neuroscience Penis |
| Zdroj: | Journal of Neurophysiology. 78:2823-2833 |
| ISSN: | 1522-1598 0022-3077 |
| DOI: | 10.1152/jn.1997.78.6.2823 |
| Popis: | De Boer, Pamela A.C.M., Andries Ter Maat, Anton W. Pieneman, Roger P. Croll, Makoto Kurokawa, and René F. Jansen. Functional role of peptidergic anterior lobe neurons in male sexual behavior of the snail Lymnaea stagnalis. J. Neurophysiol. 78: 2823–2833, 1997. A morphologically defined group of peptidergic neurons in the CNS of the hermaphroditic snail, Lymnaea stagnalis, is concerned with the control of a very specific element of male sexual behavior. These neurons are located in the anterior lobe of the right cerebral ganglion (rAL). By using chronically implanted electrodes, we show that the rAL neurons are selectively active during eversion of the penis-carrying structure, the preputium. The preputium is normally contained inside the body cavity and is everted during copulation in the male role. Electrical stimulation of the rAL neurons through the implanted electrodes, induced eversion of the preputium in vivo. Injection of APGWamide (Ala-Pro-Gly-Try-NH2), a small neuropeptide that is present in all rAL neurons, induced eversion of the preputium. Application of APGWamide to in vitro preparations of the preputium caused relaxation of this organ. In contrast, injection of the neuropeptide conopressin, which is co-localized with APGWamide in 60% of the rAL neurons, did not induce any behavior associated with male sexual activities. These results show that the neurons of the rAL can induce an eversion of the preputium as occurs during male copulation by release of APGWamide during a period of electrical activity. |
| Databáze: | OpenAIRE |
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