Microbiota inoculum composition affects holobiont assembly and host growth in Daphnia

• DOI: 10.1186/s40168-018-0444-1
• Publication Date: 2018-03-30T17:41:39Z
• Authors: Martijn Callens; Hajime Watanabe; Yasuhiko Kato; Jun Miura; Ellen Decaestecker
• Keywords: Holobiont

Host-associated microbiota is often acquired by horizontal transmission of microbes present in the environment. It hypothesized that differences environmental pool colonizers can influence community assembly on host and as such affect holobiont composition fitness. To investigate this hypothesis, host-associated invertebrate eco(toxico)logical model Daphnia was experimentally disturbed using different concentrations antibiotic oxytetracycline. The host-microbiota interactions when were colonized investigated inoculating germ-free individuals with microbiota.Antibiotic-induced disturbance had a strong effect subsequent colonization affecting ecological between members microbiota. This resulted which, turn, affected growth.These results show colonizing be an important structuring factor Daphnia, growth. These findings contribute to better understanding how microbial environment shape interactions.