Which physical adaptations are critical for the Bombus vestalis during the takeover of a host nest?
Answer
Thicker cuticle and more powerful mandibles
The invasion of a host nest is a violent, gladiatorial-style conflict where the parasite must directly battle the incumbent host queen. To survive these encounters, the Bombus vestalis has evolved a physically robust body. A thicker, tougher cuticle provides armor against the stings and attacks of the host queen, while more powerful mandibles provide the necessary weaponry to engage in direct combat, thereby ensuring the parasite can secure dominance within the nest.
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