Gut microbiota of invasive bullfrog tadpoles responds more rapidly to temperature than a noninvasive congener
| Autor: | Kevin D. Kohl, Samantha S. Fontaine |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Zoology Gut flora 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Lithobates clamitans Bullfrog biology.animal Genetics Animals Ecology Evolution Behavior and Systematics Phenotypic plasticity Rana catesbeiana biology Bacteria Temperature Vertebrate biology.organism_classification Gastrointestinal Microbiome 030104 developmental biology Congener Metagenomics Ectotherm Larva sense organs Introduced Species |
| Zdroj: | Molecular ecologyREFERENCES. 29(13) |
| ISSN: | 1365-294X |
| Popis: | Environmental temperature can alter the composition, diversity, and function of ectothermic vertebrate gut microbial communities, which may result in negative consequences for host physiology, or conversely, increase phenotypic plasticity and persistence in harsh conditions. The magnitude of either of these effects will depend on the length of time animals are exposed to extreme temperatures, and how quickly the composition and function of the gut microbiota can respond to temperature change. However, the temporal effects of temperature on gut microbiota are currently unknown. Here, we investigated the length of time required for increased temperature to alter the composition of gut bacterial communities in tadpoles of two frog species, the green frog, Lithobates clamitans, and its congener, the globally invasive American bullfrog, L. catesbeianus. We also explored the potential functional consequences of these changes by comparing predicted metagenomic profiles across temperature treatments at the last experimental time point. Bullfrog-associated microbial communities were more plastic than those of the green frog. Specifically, bullfrog communities were altered by increased temperature within hours, while green frog communities took multiple days to exhibit significant changes. Further, over ten times more bullfrog bacterial functional pathways were temperature-dependent compared to the green frog. These results support our hypothesis that bullfrog gut microbial communities would respond more rapidly to temperature change, potentially bolstering their ability to exploit novel environments. More broadly, we have revealed that even short-term increases in environmental temperature, expected to occur frequently under global climate change, can alter the gut microbiota of ectothermic vertebrates. |
| Databáze: | OpenAIRE |
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