How many symbionts are provided by mothers, acquired by offspring, and needed for successful vertical transmission in an obligate insect-bacterium mutualism?

Abstract excerpt

Vertical symbiont transmission is among the most pivotal processes for maintenance of symbiotic associations. However, it is poorly understood whether and how the levels of resource allocation and investment upon vertical transmission are regulated. The stinkbug Megacopta punctatissima is obligatorily associated with the gut symbiotic bacterium 'Candidatus Ishikawaella capsulata', whose transmission is mediated...

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