Assertion: bioluminescence | /r/CreatedBy | bacterial symbionts
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text: The bioluminescence used for counter-illumination can be either autogenic (produced by the animal itself, as in pelagic cephalopods such as Vampyroteuthis, Stauroteuthis, and pelagic octopuses in the Bolitaenidae) or bacteriogenic (produced by bacterial symbionts).