Pheromones linked to sexual behaviors excite the appetitive phase of feeding behavior of Aplysia fasciata II. Excitation of C-PR, a neuron involved in the generation of appetitive behaviors

T. Teyke, A. J. Susswein

    Research output: Contribution to journalArticlepeer-review

    7 Scopus citations

    Abstract

    Pheromones presumably released by conspecifics amplify both the appetitive and the consummatory components of feeding in Aplysia. These effects can be mimicked by administering homogenate of the large hermaphroditic duct containing atrial gland tissue, as well as peptides from the bag cells. Identified cerebropedal regulator (C-PR) neuron is thought to command various behaviors that comprise the appetitive phase of feeding. In a reduced preparation, we investigated the effects on the C-PR of applying these substances to the rhinophores, the sensory organs which detect pheromones. Stimuli that excite feeding in the animal were also found to affect the C-PR. Large hermaphroditic duct homogenate caused a doubling in the firing rate of the C-PR, and amplified the response of the C-PR to other excitatory stimuli, such as touch of food to the rhinophores. Bag cell peptides (α, β and γ bag cell peptide, and egg-laying hormone) caused smaller increases in the firing rate of the C-PR. These data are consistent with the hypothesis that pheromones facilitate appetitive feeding behavior in part via their excitation of C-PR.

    Original languageEnglish
    Pages (from-to)785-791
    Number of pages7
    JournalJournal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
    Volume182
    Issue number6
    DOIs
    StatePublished - Jun 1998

    Bibliographical note

    Funding Information:
    Acknowledgements This work was supported by Grant No. I-206-202.08/92 from the German-Israeli Foundation for Scientific Research and Development. Experimental procedures comply with the ‘‘Principles of animal care’’, publication No. 86-23, revised 1985 of the National Institute of Health, and with current German and Israeli laws regulating animal experiments.

    Keywords

    • Arousal
    • Atrial Gland
    • C-PR
    • Feeding
    • Pheromone

    Fingerprint

    Dive into the research topics of 'Pheromones linked to sexual behaviors excite the appetitive phase of feeding behavior of Aplysia fasciata II. Excitation of C-PR, a neuron involved in the generation of appetitive behaviors'. Together they form a unique fingerprint.

    Cite this