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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/46231
Título

Living together apart. The hidden genetic diversity of sponge populations.

AutorBlanquer, Andrea ; Uriz, María Jesús
Palabras claveIntraorganism genetic heterogeneity
Mosaics
Porifera
Chimeras
Scopalina lophyropoda
Genetic diversity
Fecha de publicación2011
EditorOxford University Press
CitaciónMolecular Biology and Evolution 28(9) : 2435-2438 (2011)
ResumenIntraorganism genetic stability is assumed in most organisms. However, here we show for the first time intraorganism genetic heterogeneity in natural populations of marine sponges. A total of 36 different multilocus genotypes (MLGs) were detected in 13 individuals of Scopalina lophyropoda sampled at 4 distant points within each sponge. All genotypes (showing a mosaic distribution), were transmitted to the progeny, thus contributing to the high genetic diversity and low clonality reported for this species, although its populations are small and structured and show high fission rates. There did not seem to be intraindividual genotype conflicts; on the contrary, chimeric individuals are expected to show low mortality thanks to the differential mortality of their different MLGs. This novel mechanism may also counterbalance genetic constraints in other benthic invertebrate species. The presence of sponge chimerism also suggests that results from previous population genetics studies could have been misinterpreted.
Descripción4 páginas, 3 figuras.
Versión del editorhttp://dx.doi.org/10.1093/molbev/msr096
URIhttp://hdl.handle.net/10261/46231
DOI10.1093/molbev/msr096
ISSN0737-4038
E-ISSN1537-1719
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