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Early origin of parental care in Mesozoic carrion beetles.


ABSTRACT: The reconstruction and timing of the early stages of social evolution, such as parental care, in the fossil record is a challenge, as these behaviors often do not leave concrete traces. One of the intensely investigated examples of modern parental care are the modern burying beetles (Silphidae: Nicrophorus), a lineage that includes notable endangered species. Here we report diverse transitional silphids from the Mesozoic of China and Myanmar that provide insights into the origins of parental care. Jurassic silphids from Daohugou, sharing many defining characters of Nicrophorinae, primitively lack stridulatory files significant for parental care communications; although morphologically similar, Early Cretaceous nicrophorines from the Jehol biota possess such files, indicating that a system of parental care had evolved by this early date. More importantly, burying beetles of the genus Nicrophorus have their earliest first record in mid-Cretaceous Burmese amber, and document early evolution of elaborate biparental care and defense of small vertebrate carcasses for their larvae. Parental care in the Early Cretaceous may have originated from competition between silphids and their predators. The rise of the Cretaceous Nicrophorinae implies a biology similar to modern counterparts that typically feed on carcasses of small birds and mammals.

SUBMITTER: Cai CY 

PROVIDER: S-EPMC4191754 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature

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Early origin of parental care in Mesozoic carrion beetles.

Cai Chen-Yang CY   Thayer Margaret K MK   Engel Michael S MS   Newton Alfred F AF   Ortega-Blanco Jaime J   Wang Bo B   Wang Xiang-Dong XD   Huang Di-Ying DY  

Proceedings of the National Academy of Sciences of the United States of America 20140915 39


The reconstruction and timing of the early stages of social evolution, such as parental care, in the fossil record is a challenge, as these behaviors often do not leave concrete traces. One of the intensely investigated examples of modern parental care are the modern burying beetles (Silphidae: Nicrophorus), a lineage that includes notable endangered species. Here we report diverse transitional silphids from the Mesozoic of China and Myanmar that provide insights into the origins of parental car  ...[more]

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