Funding for this research was provided by:
Biotechnology and Biological Sciences Research Council (BB/I011668/1, BB/I011714/1)
Text and Data Mining valid from 2019-05-17
Received: 12 January 2019
Accepted: 6 May 2019
First Online: 17 May 2019
Ethics approval and consent to participate
: All animal tissues measured in this study were housed in museum collections, detailed in the supplementary information and, where appropriate, the main text. No new specimens were collected for this study. Permissions were not necessary to collect the materials in this study.
: Not applicable.
: The authors declare that they have no competing interests.
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