Interspecific variation in sex‐specific gustatory organs in <i>Drosophila</i>

Kopp, Artyom; Barmina, Olga

doi:10.1002/cne.25340

Cited by 4 publications

(3 citation statements)

References 57 publications

(91 reference statements)

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“…3K). This is consistent with the absence of sex‐specific chemosensory bristles in all examined species of Lordiphosa , which stands in contrast with the majority of Sophophora and Drosophila species (Kopp and Barmina 2022). We conclude that the secondary loss of the sex comb in sp.3 coincides with the loss of dsx expression in the presumptive sex comb region.…”

Section: Resultssupporting

confidence: 87%

“…3A). This is consistent with the lack of Dsx expression at this stage in the New-World Sophophora, which also lack sex combs (Tanaka et al 2011;Rice et al 2019), as well as with the absence of sex-specific chemosensory bristles in Lordiphosa (Kopp and Barmina 2022). Dsx expression is also absent at earlier, prepupal stages in L. acongruens (Fig.…”

Section: Dsx Expression Associated With Sex Comb Development In Lordi...supporting

confidence: 86%

“…2011; Rice et al. 2019), as well as with the absence of sex‐specific chemosensory bristles in Lordiphosa (Kopp and Barmina 2022). Dsx expression is also absent at earlier, prepupal stages in L. acongruens (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Secondary reversion to sexual monomorphism associated with tissue‐specific loss of doublesex expression

et al. 2022

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Animal evolution is characterized by frequent turnover of sexually dimorphic traits-new sex-specific characters are gained, and some ancestral sex-specific characters are lost, in many lineages. In insects, sexual differentiation is predominantly cell autonomous and depends on the expression of the doublesex (dsx) transcription factor. In most cases, cells that transcribe dsx have the potential to undergo sex-specific differentiation, while those that lack dsx expression do not. Consistent with this mode of development, comparative research has shown that the origin of new sex-specific traits can be associated with the origin of new spatial domains of dsx expression. In this report, we examine the opposite situation-a secondary loss of the sex comb, a male-specific grasping structure that develops on the front legs of some drosophilid species. We show that while the origin of the sex comb is linked to an evolutionary gain of dsx expression in the leg, sex comb loss in a newly identified species of Lordiphosa (Drosophilidae) is associated with a secondary loss of dsx expression. We discuss how the developmental control of sexual dimorphism affects the mechanisms by which sex-specific traits can evolve.

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Section: Resultssupporting

confidence: 87%

Section: Dsx Expression Associated With Sex Comb Development In Lordi...supporting

confidence: 86%

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Secondary reversion to sexual monomorphism associated with tissue‐specific loss of doublesex expression

et al. 2022

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Evolution of chemosensory tissues and cells across ecologically diverse Drosophilids

Bontonou,

Saint-Leandre,

Kafle

et al. 2024

Nat Commun

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Chemosensory tissues exhibit significant between-species variability, yet the evolution of gene expression and cell types underlying this diversity remain poorly understood. To address these questions, we conducted transcriptomic analyses of five chemosensory tissues from six Drosophila species and integrated the findings with single-cell datasets. While stabilizing selection predominantly shapes chemosensory transcriptomes, thousands of genes in each tissue have evolved expression differences. Genes that have changed expression in one tissue have often changed in multiple other tissues but at different past epochs and are more likely to be cell type-specific than unchanged genes. Notably, chemosensory-related genes have undergone widespread expression changes, with numerous species-specific gains/losses including novel chemoreceptors expression patterns. Sex differences are also pervasive, including a D. melanogaster-specific excess of male-biased expression in sensory and muscle cells in its forelegs. Together, our analyses provide new insights for understanding evolutionary changes in chemosensory tissues at both global and individual gene levels.

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Underexplored diversity in Palaearctic Miltogramma Meigen, 1803 (Diptera: Sarcophagidae)

Szpila,

Walczak,

Grzywacz

et al. 2023

Zoological Journal of the Linnean Society

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Current knowledge of the global diversity of schizophoran flies, the megadiverse group that evolved during the episode of rapid dipteran radiations in the Early Cenozoic, is far from satisfactory. A significant part of this radiation is flesh flies (Sarcophagidae), which include about 3000 known species. Miltogramma Meigen, the largest genus of the flesh fly subfamily Miltogramminae, includes 119 known species with a peak of diversity in the Middle East and Central Asia. The taxonomy of the genus is acknowledged to be challenging, partly due to logistical issues associated with the deposition of type specimens in less accessible Russian institutions. Six new distinctive species of Miltogramma collected during recent expeditions to Iran and Uzbekistan are described using methods of integrative taxonomy: Miltogramma manouchehrii Szpila & Pape, sp. nov., M. mikolajczyki Szpila & Pape, sp. nov., M. rognesi Szpila & Pape, sp. nov., M. soszynskii Szpila & Pape, sp. nov., M. thompsoni Szpila & Pape, sp. nov., and M. vervesi Szpila & Pape, sp. nov. Flies are characterized by secondary sexual dimorphism expressed in the form of species-specific chaetotaxy of the male fore tarsus, a character related to courtship behaviour. The reconnaissance surveys to both of the mentioned countries performed in the last decade brought information about a large number of potential new species of Miltogramma, despite the taxonomic work performed in this area in the past. Describing the majority of them requires extensive revisionary work, which involves accessing the type specimens and applying modern methods of species delimitation.

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Interspecific variation in sex‐specific gustatory organs in Drosophila

Cited by 4 publications

References 57 publications

Secondary reversion to sexual monomorphism associated with tissue‐specific loss of doublesex expression

Secondary reversion to sexual monomorphism associated with tissue‐specific loss of doublesex expression

Evolution of chemosensory tissues and cells across ecologically diverse Drosophilids

Underexplored diversity in Palaearctic Miltogramma Meigen, 1803 (Diptera: Sarcophagidae)

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