Marsupial brood care in Cretaceous tanaidaceans

Show simple item record Sánchez-García, Alba Delclòs, Xavier Engel, Michael S. Bird, Graham J. Perrichot, Vincent Peñalver Mollá, Enrique 2020-10-01T08:26:03Z 2020-10-01T08:26:03Z 2017-06-29
dc.identifier.citation Scientific Reports, vol.7, 4390 es_ES
dc.identifier.issn 2045-2322
dc.description.abstract Parental care in animal evolution has long fascinated biologists, but tracing this complex of behavioural repertoires is challenging, as these transitory states often leave no corporeal traces as fossils. Among modern invertebrates, the tanaidaceans (Malacostraca: Peracarida), a lineage of marsupial crustaceans, show an interesting variety of brooding strategies. Here we report on fossil tanaidaceans from the Cretaceous of Spain and France that provide conclusive evidence for marsupial care of brood-offspring. Two exceptionally preserved female specimens of Alavatanais carabe and A. margulisae from Late Albian Peñacerrada I amber (Spain) possess four pairs of rudimentary oostegites, indicating formation of a marsupium. From Recent data, given the taxonomic distribution of a marsupium of four pairs of oostegites, we hypothesize that this may be plesiomorphic for the Tanaidomorpha. We also report on a peculiar tanaidacean specimen referable to the fossil family Alavatanaidae, Daenerytanais maieuticus gen. et sp. nov., from Early Cenomanian La Buzinie amber (France), preserved with its marsupial pouch and content. Our discoveries provide early evidence of the peracarid reproductive strategy, as seen in modern Tanaidacea, and argue that this form of parental care may have played a role in the diversification of the lineage during this period. es_ES
dc.description.sponsorship Departament de Dinàmica de la Terra i de l’Oceà and Institut de Recerca de la Biodiversitat, Universitat de Barcelona, España es_ES
dc.description.sponsorship Division of Invertebrate Zoology, American Museum of Natural History, Estados Unidos es_ES
dc.description.sponsorship Division of Entomology, University of Kansas, Estados Unidos es_ES
dc.description.sponsorship Division of Entomology, Natural History Museum, Estados Unidos es_ES
dc.description.sponsorship Géosciences Rennes, Université Rennes, Francia es_ES
dc.description.sponsorship Géosciences Rennes, Centre National de la Recherche Scientifique, Francia es_ES
dc.description.sponsorship Museo Geominero, Instituto Geológico y Minero de España, España es_ES
dc.language.iso en es_ES
dc.publisher Nature Research es_ES
dc.relation CGL2014-52163 es_ES
dc.rights Acceso abierto es_ES
dc.subject Mammalia es_ES
dc.subject Marsupiala es_ES
dc.subject Cretácico es_ES
dc.subject fósil es_ES
dc.subject evolución biológica es_ES
dc.subject taxonomía es_ES
dc.title Marsupial brood care in Cretaceous tanaidaceans es_ES
dc.type Postprint es_ES
dc.relation.publisherversion es_ES
dc.description.funder Ministerio de Economía y Competitividad, España es_ES
dc.identifier.doi es_ES

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