Bacterial density rather than diversity correlates with hatching success across different avian species
Metadatos
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Peralta-Sánchez, Juan Manuel; Martín Platero, Antonio Manuel; Wegener-Parfrey, Laura; Martínez Bueno, Manuel; Rodríguez Ruano, Sonia; Navas-Molina, José Antonio; Vázquez-Baeza, Yoshiki; Martín-Gálvez, David; Martín-Vivaldi Martínez, Manuel Lorenzo; Ibáñez Álamo, Juan Diego; Knight, Rob; Soler Cruz, Juan JoséEditorial
Oxford University Press
Materia
ARISA Avian community Bacterial community Bacterial density Comparative analysis Eggshells Hatching success High-throughput sequencing Illumina HiSeq Phylogenetic General Least Square
Fecha
2018-02-09Referencia bibliográfica
Peralta-Sánchez, Juan Manuel; et. al. Bacterial density rather than diversity correlates with hatching success across different avian species. FEMS Microbiology Ecology, 2018, Vol. 94, No. 3 fiy022 [http://hdl.handle.net/10481/53913]
Patrocinador
Funding was provided by Ministerio de Educación y Ciencia and European founds (FEDER) [CGL2007-61251, CGL2010-19233-C03- 01, CGL2010-19233-C03-03]. JMPS was funded by Ministerio de Educación and Consejería de Innovación, Ciencia y Empresa under International Excellence Campus Program, University of Granada (CEI Granada 2009). RK was supported in part by the Howard Hughes Medical Institute. The Earth Microbiome Project was supported in part by the John Templeton Foundation and the W.M. Keck Foundation.Resumen
Bacterial communities within avian nests are considered an important determinant of egg viability, potentially selecting for
traits that confer embryos with protection against trans-shell infection. A high bacterial density on the eggshell increases
hatching failure, whether this effect could be due to changes in bacterial community or just a general increase in bacterial
density. We explored this idea using intra- and interspecific comparisons of the relationship between hatching success and
eggshell bacteria characterized by culture and molecular techniques (fingerprinting and high-throughput sequencing). We
collected information for 152 nests belonging to 17 bird species. Hatching failures occurred more frequently in nests with
higher density of aerobic mesophilic bacteria on their eggshells. Bacterial community was also related to hatching success, but only when minority bacterial operational taxonomic units were considered. These findings support the hypothesis that
bacterial density is a selective agent of embryo viability, and hence a proxy of hatching failure only within species.
Although different avian species hold different bacterial densities or assemblages on their eggs, the association between
bacteria and hatching success was similar for different species. This result suggests that interspecific differences in
antibacterial defenses are responsible for keeping the hatching success at similar levels in different species.