2018
DOI: 10.1186/s12862-018-1265-3
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Comparative analysis reveals the complex role of histoblast nest size in the evolution of novel insect abdominal appendages in Sepsidae (Diptera)

Abstract: BackgroundThe males of some sepsid species (Sepsidae: Diptera) have abdominal appendages that are remarkable in several ways. They are sexually dimorphic, have a complex evolutionary history of gain and loss, and can be jointed and thus highly mobile. The sternite brushes are used extensively in complex courtship behaviors that differ considerably between species and during mating. The abdominal appendages have a novel developmental pathway developing from histoblast nests rather than imaginal discs.ResultsWe … Show more

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“…Thus, any developmental delay signifying a cost of male secondary sexual trait complexity overall appears to be minor in sepsid flies. This may be partially explained by recent findings that merely minor changes in the relative sizes of histoblast nests are required for the development of sternite brushes of very different size [ 57 , 58 ].…”
Section: Discussionmentioning
confidence: 99%
“…Thus, any developmental delay signifying a cost of male secondary sexual trait complexity overall appears to be minor in sepsid flies. This may be partially explained by recent findings that merely minor changes in the relative sizes of histoblast nests are required for the development of sternite brushes of very different size [ 57 , 58 ].…”
Section: Discussionmentioning
confidence: 99%