Please use this identifier to cite or link to this item:
|Title:||Deciphering the evolutionary history and developmental mechanisms of a complex sexual ornament: The abdominal appendages of sepsidae (Diptera)||Authors:||Bowsher, J.H.
|Issue Date:||Apr-2013||Citation:||Bowsher, J.H., Ang, Y., Ferderer, T., Meier, R. (2013-04). Deciphering the evolutionary history and developmental mechanisms of a complex sexual ornament: The abdominal appendages of sepsidae (Diptera). Evolution 67 (4) : 1069-1080. ScholarBank@NUS Repository. https://doi.org/10.1111/evo.12006||Abstract:||Male abdomen appendages are a novel trait found within Sepsidae (Diptera). Here we demonstrate that they are likely to have evolved once, were lost three times, and then secondarily gained in one lineage. The developmental basis of these appendages was investigated by counting the number of histoblast cells in each abdominal segment in four species: two that represented the initial instance of appendage evolution, one that has secondarily gained appendages, and one species that did not have appendages. Males of all species with appendages have elevated cell counts for the fourth segment, which gives rise to the appendages. In Perochaeta dikowi, which reacquired the trait, the females also have elevated cell count on the fourth segment despite the fact that females do not develop appendages. The species without appendages has similar cell counts in all segments regardless of sex. These results suggest that the basis for appendage development is shared in males across all species, but the sexual dimorphism is regulated differently in P. dikowi. © 2012 The Author(s). Evolution © 2012 The Society for the Study of Evolution.||Source Title:||Evolution||URI:||http://scholarbank.nus.edu.sg/handle/10635/100406||ISSN:||00143820||DOI:||10.1111/evo.12006|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 23, 2019
WEB OF SCIENCETM
checked on Oct 15, 2019
checked on Oct 12, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.