Evidence for no sexual isolation between <i><scp>D</scp>rosophila albomicans</i> and <i><scp>D</scp>. nasuta</i>

Kim, Yong-Kyu; Phillips, Dennis; Tao, Ye

doi:10.1002/ece3.619

Cited by 11 publications

(4 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…nasuta between 150 and 500 thousand years ago [48,49]. These otherwise indistinguishable sister species produce fully fertile hybrids [50,51], but differ karyotypically by two Robertsonian fusions. Chromosome 3 (henceforth Chr.…”

Section: Introductionmentioning

confidence: 99%

Ancestral male recombination in Drosophila albomicans produced geographically restricted neo-Y chromosome haplotypes varying in age and onset of decay

Wei

Bachtrog

2019

PLoS Genet

View full text Add to dashboard Cite

Male Drosophila typically have achiasmatic meiosis, and fusions between autosomes and the Y chromosome have repeatedly created non-recombining neo-Y chromosomes that degenerate. Intriguingly, Drosophila nasuta males recombine, but their close relative D. albomicans reverted back to achiasmy after evolving neo-sex chromosomes. Here we use genome-wide polymorphism data to reconstruct the complex evolutionary history of neo-sex chromosomes in D. albomicans and examine the effect of recombination and its cessation on the initiation of neo-Y decay. Population and phylogenomic analyses reveal three distinct neo-Y types that are geographically restricted. Due to ancestral recombination with the neo-X, overall nucleotide diversity on the neo-Y is similar to the neo-X but severely reduced within neo-Y types. Consistently, the neo-Y chromosomes fail to form a monophyletic clade in sliding window trees outside of the region proximal to the fusion. Based on tree topology changes, we inferred the recombination breakpoints that produced haplotypes specific to each neo-Y type. We show that recombination became suppressed at different time points for the different neo-Y haplotypes. Haplotype age correlates with onset of neo-Y decay, and older neo-Y haplotypes show more fixed gene disruption via frameshift indels and down-regulation of neo-Y alleles. Genes are downregulated independently on the different neo-Ys, but are depleted of testes-expressed genes across all haplotypes. This indicates that genes important for male function are initially shielded from degeneration. Our results offer a time course of the early progression of Y chromosome evolution, showing how the suppression of recombination, through the reversal to achiasmy in D. albomicans males, initiates the process of degeneration.

show abstract

Section: Introductionmentioning

confidence: 99%

Ancestral male recombination in Drosophila albomicans produced geographically restricted neo-Y chromosome haplotypes varying in age and onset of decay

Wei

Bachtrog

2019

PLoS Genet

View full text Add to dashboard Cite

show abstract

“…The stock labeled taxon J Nou-98 that arrived via the Ehime center, had pollinosity across the whole frons and showed the typical sexual behavior of D. albomicans and D. nasuta. The behavior of these last two species is not visibly different, nor do they show any evidence of assortative mating (e.g., Kim et al 2013). The main distinguishing innate feature is that albomicans has fused the sex chromosomes to the large autosomal chromosome three.…”

Section: Incongruent Phenotypes Among Extant Stocksmentioning

confidence: 94%

Stock mislabelling and its impact on phylogenomic analysis in the Drosophila nasuta subgroup/species complex

Pj¹,

Wang²,

Cd³

2019

Preprint

View full text Add to dashboard Cite

In the course of our 28 de novo genome study of the nasuta-subgroup of the immigrans species group, we have come to suspect that several stocks acquired from the major stock centers may have either been mislabeled or mixed up in other ways. This is a short note to indicate which stocks these are, how they were diagnosed, and how an alignment and assembly free (AFAF) phylogenomic analysis sheds further light on what probably occurred.

show abstract

“…The shaded cells indicate an absence of known data and allow the visualization of gaps in behavioural comparisons across Drosophila species. Kim et al, 2013. …”

Section: Broader Perspectives and Conclusionmentioning

confidence: 99%

Phylogeny, environment and sexual communication across the Drosophila genus

Jezovit

Levine

Schneider

2017

Journal of Experimental Biology

View full text Add to dashboard Cite

Social behaviour emerges from the local environment but is constrained by the animal's life history and its evolutionary lineage. In this perspective, we consider the genus Drosophila and provide an overview of how these constraints can shape how individuals interact. Our focus is restricted to visual and chemical signals and how their use varies across species during courtship -currently the only social behaviour well-studied across many Drosophila species. We broadly categorize species into four climatic groups -cosmopolitan, tropical, temperate and arid -which serve as discussion points as we review comparative behavioural and physiological studies and relate them to the abiotic conditions of a species environment. We discuss how the physiological and behavioural differences among many fly species may reflect life history differences as much as, or even more than, differences in phylogeny. This perspective serves not only to summarize what has been studied across drosophilids, but also to identify questions and outline gaps in the literature worth pursuing for progressing the understanding of behavioural evolution in Drosophila.

show abstract

Evidence for no sexual isolation between Drosophila albomicans and D. nasuta

Cited by 11 publications

References 75 publications

Ancestral male recombination in Drosophila albomicans produced geographically restricted neo-Y chromosome haplotypes varying in age and onset of decay

Ancestral male recombination in Drosophila albomicans produced geographically restricted neo-Y chromosome haplotypes varying in age and onset of decay

Stock mislabelling and its impact on phylogenomic analysis in the Drosophila nasuta subgroup/species complex

Phylogeny, environment and sexual communication across the Drosophila genus

Contact Info

Product

Resources

About