Parental care drives microbiome transmission in oviparous skin-feeding caecilians


SOCIETY FOR INTEGRATIVE AND COMPARATIVE BIOLOGY
2021 VIRTUAL ANNUAL MEETING (VAM)
January 3 – Febuary 28, 2021

Meeting Abstract


76-4  Sat Jan 2  Parental care drives microbiome transmission in oviparous skin-feeding caecilians Kouete, MT*; Bletz, MC; LaBumbard, B; Woodhams, DC; Blackburn, DC; University of Florida; UMass; UMass; UMass; University of Florida tallakmarcelk@gmail.com

Parental care encompasses multiple forms of care and behaviors by parents to enhance the fitness and survival of offspring. Among vertebrates, amphibians are well known for their diverse forms of parental care which include elaborate ways to prevent desiccation of eggs and juveniles. One of the most extreme forms of parental care occurs in oviparous species of the wormlike burrowing amphibians, the caecilians. Some oviparous caecilians are believed to spend up to three months attending eggs and providing care to juveniles after they hatch. During this time the attending female provides its skin to the attended juveniles to feed on, a phenomenon known as dermatophagy. The female’s skin is rich in lipids and provides nutrients to the developing juveniles, but whether the skin might also transfer a microbial flora remains unknown. Here, we investigated the skin and gut microbiomes of mothers and juveniles in Herpele squalostoma to evaluate the possibility of transfer of microbes. We obtained skin and gut microbiome samples from wild caught caecilians at different life stages and reproductive status. We followed the Earth Microbiome Project protocols to extract genomic DNA and amplify the V4 region of the 16S rRNA, conducted sequencing on the illumina MiSeq platform and processed microbiome reads in QIIME2. We characterize the skin and gut microbiome community of H. squalostoma in relation to parental care and provide the relationships between bacteria prevalence and abundance between attending females and their juveniles. Our results indicate that both microbial prevalence and abundance are highly conserved on the skin and in the gut between attending females and juveniles. When considering the most abundant bacteria in our dataset, the skin and gut of both attending females and their juveniles contained similar phyla in comparable proportions.

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