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Fischer MT, Xue KS, Costello EK, Dvorak M, Raboisson G, Robaczewska A, Caty SN, Relman DA, O’Connell LA. Effects of parental care on skin microbial community composition in poison frogs. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.09.11.612488. [PMID: 39314287 PMCID: PMC11419107 DOI: 10.1101/2024.09.11.612488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
Parent-offspring interactions constitute the first contact of many newborns with their environment, priming community assembly of microbes through priority effects. Early exposure to microbes can have lasting influences on the assembly and functionality of the host's microbiota, leaving a life-long imprint on host health and disease. Studies of the role played by parental care in microbial acquisition have primarily focused on humans and hosts with agricultural relevance. Anuran vertebrates offer the opportunity to examine microbial community composition across life stages as a function of parental investment. In this study, we investigate vertical transmission of microbiota during parental care in a poison frog (Family Dendrobatidae), where fathers transport their offspring piggyback-style from terrestrial clutches to aquatic nurseries. We found that substantial bacterial colonization of the embryo begins after hatching from the vitelline envelope, emphasizing its potential role as microbial barrier during early development. Using a laboratory cross-foster experiment, we demonstrated that poison frogs performing tadpole transport serve as a source of skin microbes for tadpoles on their back. To study how transport impacts the microbial skin communities of tadpoles in an ecologically relevant setting, we sampled frogs and tadpoles of sympatric species that do or do not exhibit tadpole transport in their natural habitat. We found more diverse microbial communities associated with tadpoles of transporting species compared to a non-transporting frog. However, we detected no difference in the degree of similarity between adult and tadpole skin microbiotas, based on whether the frog species exhibits transporting behavior or not. Using a field experiment, we confirmed that tadpole transport can result in the persistent colonization of tadpoles by isolated microbial taxa associated with the caregiver's skin, albeit often at low prevalence. This is the first study to describe vertical transmission of skin microbes in anuran amphibians, showing that offspring transport may serve as a mechanism for transmission of parental skin microbes. Overall, these findings provide a foundation for further research on how vertical transmission in this order impacts host-associated microbiota and physiology.
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Affiliation(s)
| | - Katherine S. Xue
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Elizabeth K. Costello
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Mai Dvorak
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Gaëlle Raboisson
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Anna Robaczewska
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | | | - David A. Relman
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
- Infectious Diseases Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA 94304, USA
| | - Lauren A. O’Connell
- Department of Biology, Stanford University, Stanford, CA 94305, USA
- Wu Tsai Institute for Neuroscience, Stanford University, Stanford, CA 94305, USA
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Domin H, Zurita-Gutiérrez YH, Scotti M, Buttlar J, Hentschel Humeida U, Fraune S. Predicted Bacterial Interactions Affect in Vivo Microbial Colonization Dynamics in Nematostella. Front Microbiol 2018; 9:728. [PMID: 29740401 PMCID: PMC5928149 DOI: 10.3389/fmicb.2018.00728] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 03/28/2018] [Indexed: 01/06/2023] Open
Abstract
The maintenance and resilience of host-associated microbiota during development is a fundamental process influencing the fitness of many organisms. Several host properties were identified as influencing factors on bacterial colonization, including the innate immune system, mucus composition, and diet. In contrast, the importance of bacteria–bacteria interactions on host colonization is less understood. Here, we use bacterial abundance data of the marine model organism Nematostella vectensis to reconstruct potential bacteria–bacteria interactions through co-occurrence networks. The analysis indicates that bacteria–bacteria interactions are dynamic during host colonization and change according to the host’s developmental stage. To assess the predictive power of inferred interactions, we tested bacterial isolates with predicted cooperative or competitive behavior for their ability to influence bacterial recolonization dynamics. Within 3 days of recolonization, all tested bacterial isolates affected bacterial community structure, while only competitive bacteria increased bacterial diversity. Only 1 week after recolonization, almost no differences in bacterial community structure could be observed between control and treatments. These results show that predicted competitive bacteria can influence community structure for a short period of time, verifying the in silico predictions. However, within 1 week, the effects of the bacterial isolates are neutralized, indicating a high degree of resilience of the bacterial community.
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Affiliation(s)
- Hanna Domin
- Zoological Institute, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | | | - Marco Scotti
- RD3 Experimental Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Jann Buttlar
- Zoological Institute, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Ute Hentschel Humeida
- RD3 Marine Microbiology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany.,Christian-Albrechts-Universität zu Kiel, Kiel, Germany
| | - Sebastian Fraune
- Zoological Institute, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
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Sabino‐Pinto J, Galán P, Rodríguez S, Bletz MC, Bhuju S, Geffers R, Jarek M, Vences M. Temporal changes in cutaneous bacterial communities of terrestrial‐ and aquatic‐phase newts (Amphibia). Environ Microbiol 2017; 19:3025-3038. [DOI: 10.1111/1462-2920.13762] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 04/05/2017] [Accepted: 04/08/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Joana Sabino‐Pinto
- Zoological InstituteBraunschweig University of TechnologyBraunschweig38106 Germany
| | - Pedro Galán
- Departamento de Bioloxía, Facultade de CienciasUniversidade da Coruña, Grupo de Investigación en Biología Evolutiva (GIBE)A Coruña15071 Spain
| | - Silvia Rodríguez
- Departamento de Bioloxía, Facultade de CienciasUniversidade da Coruña, Grupo de Investigación en Biología Evolutiva (GIBE)A Coruña15071 Spain
| | - Molly C. Bletz
- Zoological InstituteBraunschweig University of TechnologyBraunschweig38106 Germany
| | - Sabin Bhuju
- Department of Genome AnalyticsHelmholtz Centre for Infection ResearchBraunschweig38124 Germany
| | - Robert Geffers
- Department of Genome AnalyticsHelmholtz Centre for Infection ResearchBraunschweig38124 Germany
| | - Michael Jarek
- Department of Genome AnalyticsHelmholtz Centre for Infection ResearchBraunschweig38124 Germany
| | - Miguel Vences
- Zoological InstituteBraunschweig University of TechnologyBraunschweig38106 Germany
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Mortzfeld BM, Urbanski S, Reitzel AM, Künzel S, Technau U, Fraune S. Response of bacterial colonization inNematostella vectensisto development, environment and biogeography. Environ Microbiol 2015; 18:1764-81. [DOI: 10.1111/1462-2920.12926] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/04/2015] [Accepted: 05/04/2015] [Indexed: 01/06/2023]
Affiliation(s)
- Benedikt M. Mortzfeld
- Zoological Institute; Christian-Albrechts University Kiel; Olshausenstrasse 40 Kiel 24098 Germany
| | - Szymon Urbanski
- Zoological Institute; Christian-Albrechts University Kiel; Olshausenstrasse 40 Kiel 24098 Germany
| | - Adam M. Reitzel
- Department of Biological Sciences; The University of North Carolina at Charlotte; Woodward Hall 245 Charlotte NC 28223 USA
| | - Sven Künzel
- Max-Planck Institute for Evolutionary Biology; Plön 24306 Germany
| | - Ulrich Technau
- Department of Molecular Evolution and Development, Centre for Organismal Systems Biology, Faculty of Life Sciences; University of Vienna; Althanstrasse 14 Wien 1090 Austria
| | - Sebastian Fraune
- Zoological Institute; Christian-Albrechts University Kiel; Olshausenstrasse 40 Kiel 24098 Germany
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Kueneman JG, Parfrey LW, Woodhams DC, Archer HM, Knight R, McKenzie VJ. The amphibian skin-associated microbiome across species, space and life history stages. Mol Ecol 2013; 23:1238-1250. [PMID: 24171949 DOI: 10.1111/mec.12510] [Citation(s) in RCA: 242] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 08/15/2013] [Accepted: 08/28/2013] [Indexed: 12/18/2022]
Abstract
Skin-associated bacteria of amphibians are increasingly recognized for their role in defence against pathogens, yet we have little understanding of their basic ecology. Here, we use high-throughput 16S rRNA gene sequencing to examine the host and environmental influences on the skin microbiota of the cohabiting amphibian species Anaxyrus boreas, Pseudacris regilla, Taricha torosa and Lithobates catesbeianus from the Central Valley in California. We also studied populations of Rana cascadae over a large geographic range in the Klamath Mountain range of Northern California, and across developmental stages within a single site. Dominant bacterial phylotypes on amphibian skin included taxa from Bacteroidetes, Gammaproteobacteria, Alphaproteobacteria, Firmicutes, Sphingobacteria and Actinobacteria. Amphibian species identity was the strongest predictor of microbial community composition. Secondarily, within a given amphibian species, wetland site explained significant variation. Amphibian-associated microbiota differed systematically from microbial assemblages in their environments. Rana cascadae tadpoles have skin bacterial communities distinct from postmetamorphic conspecifics, indicating a strong developmental shift in the skin microbes following metamorphosis. Establishing patterns observed in the skin microbiota of wild amphibians and environmental factors that underlie them is necessary to understand skin symbiont community assembly, and ultimately, the role skin microbiota play in the extended host phenotype including disease resistance.
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Affiliation(s)
- Jordan G Kueneman
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N-122, UCB 334, Boulder, CO, 80309, USA
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Faszewski EE, Sljivo S, Kriszun L, Kaltenbach JC. Apoptosis in larval and frog skin of Rana pipiens, R. catesbeiana, and Ceratophrys ornata. J Morphol 2013; 275:51-6. [PMID: 24127169 DOI: 10.1002/jmor.20195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 07/21/2013] [Accepted: 08/14/2013] [Indexed: 12/06/2022]
Abstract
Apoptosis (programmed cell death) occurs during normal development of anurans in organs such as gills, gut, and tail. For example, apoptotic cells have been reported in the luminal epithelium along the length of the digestive tract of both larvae and frogs; however, timing of the peak number of such cells varies in different species. The purpose of the present study was to ascertain whether apoptosis also varies by species during metamorphic restructuring of the skin (as larval epithelium is replaced by adult epidermis). To determine this, cross-sections of dorsal skin from representative larval stages and frogs of Rana pipiens, R. catesbeiana, and Ceratophrys ornata were incubated with monoclonal antibody against active caspase-3, one of the main enzymes in the apoptotic cascade. We observed apoptotic cells in the epidermis of the skin of the three species and found that such cells were more numerous in larval stages than in frogs and more abundant in the two ranid species than in C. ornata. These results contribute to our understanding of metamorphic changes in anuran skin.
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Affiliation(s)
- Ellen E Faszewski
- Department of Math and Science, Wheelock College, Boston, Massachusetts, 02215
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Kaptan E, Sengezer Inceli M, Sancar Bas S. Lectin binding properties of liver, small intestine and tail of metamorphosing marsh frog (Pelophylax ridibundus Pallas 1771). Acta Histochem 2013; 115:595-602. [PMID: 23394843 DOI: 10.1016/j.acthis.2013.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 01/02/2013] [Accepted: 01/03/2013] [Indexed: 10/27/2022]
Abstract
In this present study, localization and variations of specific sugar moieties in the terminal carbohydrate chains of glycoconjugates in the small intestine, liver and tail have been investigated during the metamorphosis of Pelophylax ridibundus larvae. For this purpose, four lectins were used: wheat germ agglutinin (WGA), Ulex europaeus agglutinin (UEA-I), Dolichos biflorus agglutinin (DBA) and peanut agglutinin (PNA), in different larval stages of the frog. Some cells stained specifically in the intestinal mucosa and in tail epidermal cells with the lectins and their affinity changed during metamorphic transformation. For the most part, they decreased in the climax and postmetamorphic periods. It was also found that WGA, DBA and UEA-I lectins exhibited strong affinity to white blood cells in the liver and their binding affinities were the highest in prometamorphosis and they gradually decreased until the end of metamorphosis. These results suggest that the changes of lectin binding in metamorphosis may be an indication of some cellular events occurring in larval metamorphosis such as cell differentiation and damage of cell adhesion between death and differentiating cells. They also can be useful markers for detection of white blood cells in amphibian hematopoietic organs.
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