Caste differences in the association between dopamine and reproduction in the bumble bee Bombus ignitus
| Autor: | Naruaki Morita, Hinako Matsuyama, Ken Sasaki, Masato Ono |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Central Nervous System
0106 biological sciences 0301 basic medicine medicine.medical_specialty Bombus ignitus Physiology Dopamine Central nervous system Hierarchy Social Diapause Biology 01 natural sciences 03 medical and health sciences Internal medicine Biogenic amine Hemolymph medicine Animals Thoracic ganglia reproductive and urinary physiology chemistry.chemical_classification Ovary Anatomy Bees 010602 entomology 030104 developmental biology medicine.anatomical_structure Endocrinology chemistry Insect Science behavior and behavior mechanisms Female Octopamine (neurotransmitter) medicine.drug |
| Zdroj: | Journal of Insect Physiology. 103:107-116 |
| ISSN: | 0022-1910 |
| DOI: | 10.1016/j.jinsphys.2017.10.013 |
| Popis: | A society of bumble bees is primitively eusocial, with an annual life cycle, and can be used as a physiological model of social bees for comparative studies with highly eusocial hymenopterans. We investigated the dynamics of biogenic amine levels in the brain, meso-metathoracic ganglia, terminal abdominal ganglion, and hemolymph in queens 1 day after mating (1DAM), during diapause (Dp), and during colony founding (CF) in the bumble bee, Bombus ignitus . Dopamine levels in the brain of CF queens were significantly lower than in 1DAM and Dp queens, and the levels in the thoracic ganglia and hemolymph in CF queens were lower than in 1DAM queens, but did not differ from other groups in the abdominal ganglion. Octopamine levels in the brains were higher in Dp queens than in 1DAM queens. Serotonin and tyramine levels did not differ between the groups in different compartments of the central nervous system (CNS) that we examined. The dopamine levels in the brains were significantly positively correlated with those in the thoracic ganglia, abdominal ganglion, and hemolymph, suggesting the regulation of dopamine levels among three different compartments of the CNS. In isolated virgin queens, there were no significant correlations between the brain levels of biogenic amines that we examined and the lengths of the largest terminal oocytes, whereas, in isolated workers, the brain dopamine levels were positively correlated with oocyte lengths. These results suggest that dopamine is associated with ovarian activity in reproductive workers, but not in either virgin or mated queens. |
| Databáze: | OpenAIRE |
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