General Stress Responses in the Honey Bee

Area of Science:

• Comparative physiology
• Insect endocrinology
• Stress response mechanisms

Background:

• Stress response concepts originated in mammals with the General Adaptation Syndrome and the hypothalamo-pituitary-adrenal (HPA) axis.
• Mammalian stress involves catecholamines and corticoid hormones, orchestrating the 'fight-or-flight' response.
• Insect stress responses involve biogenic amines, neuropeptides, and metabolic hormones, but are less understood.

Purpose of the Study:

• To review physiological stress response elements specific to honey bees.
• To propose a hypothetical integrated honey bee stress pathway.
• To identify knowledge gaps and stimulate further research on honey bee stress physiology.

Main Methods:

• Review of existing literature on mammalian and insect stress physiology.
• Comparative analysis of known stress pathways.
• Hypothetical model construction based on honey bee neuroanatomy and physiology.

Main Results:

• A hypothetical honey bee stress pathway is proposed, involving the brain, corpora cardiaca, and metabolic organs (fat body, crop).
• This pathway may coordinate rapid metabolic and arousal changes in response to environmental stressors.
• Specific physiological elements of honey bee stress responses are highlighted, alongside areas needing further investigation.

Conclusions:

• Honey bees possess a distinct physiological stress response system, potentially analogous to the mammalian HPA axis.
• This system involves neuroendocrine regulation of metabolic activity and arousal.
• Further research is crucial to fully elucidate honey bee stress responses and their implications.