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Effects of carbon dioxide and brain cauterization on corpora allata activity and oogenesis in bumble bees (Bombus hypnorum and Bombus terrestris)



Effects of carbon dioxide and brain cauterization on corpora allata activity and oogenesis in bumble bees (Bombus hypnorum and Bombus terrestris)



Zoologische Jahrbucher, Abteilung fur Allgemeine Zoologie und Physiologie der Tiere 88(2): 237-246



Queens of Bombus hypnorum and B. terrestris were anaesthetized with carbon dioxide as newly emerged bees or on day 2 after eclosion. The treatment induced oogenesis, and enlargement of the corpora allata with a higher synthesis rate for juvenile hormone in vitro. Simultaneously, the formation of reserves for hibernation was inhibited. The cauterization of the neurosecretory cells of the pars intercerebralis resulted in greater effects than carbon dioxide narcosis.

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Accession: 001580014

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