I know you can suppress the microbiota of an insect with antibiotics, but I´m am looking for a way to increase it. For example, can I feed an insect with something that helps boost the bacteria like agar or something.


The answer is absolutely yes. There are 3 main ways:

  1. Faecal transplant: faecal sample from other insect could be transplanted in order to colonize the gastro-intestinal tract
  2. Injection of bacterial culture into the desired tissue
  3. Use of functional foods to increase the abundance of specific bacterial genus.

See this review for more detail


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