Sexual signal loss, pleiotropy, and maintenance of a male reproductive polymorphism in crickets

Evolution ◽  
2020 ◽  
Vol 74 (5) ◽  
pp. 1002-1009
Author(s):  
Justa L. Heinen‐Kay ◽  
Rachel E. Nichols ◽  
Marlene Zuk
Keyword(s):  
Signal Loss ◽  
Sexual Signal

scholarly journals When Does Sexual Signal Exploitation Lead to Signal Loss?

2019 ◽  
Vol 7 ◽  
Author(s):  
Justa L. Heinen-Kay ◽  
Marlene Zuk
Keyword(s):  
Signal Loss ◽  
Sexual Signal

Spermatophore retention may accommodate sexual signal loss in Pacific field crickets

2020 ◽  
Vol 74 (8) ◽  
Author(s):  
Mounica V. Kota ◽  
Ellen M. Urquhart ◽  
Marlene Zuk
Keyword(s):  
Signal Loss ◽  
Sexual Signal ◽  
Field Crickets

scholarly journals Sexual signal loss: The link between behaviour and rapid evolutionary dynamics in a field cricket

2018 ◽  
Vol 87 (3) ◽  
pp. 623-633 ◽  
Author(s):  
Marlene Zuk ◽  
Nathan W. Bailey ◽  
Brian Gray ◽  
John T. Rotenberry
Keyword(s):  
Evolutionary Dynamics ◽  
Field Cricket ◽  
Signal Loss ◽  
Sexual Signal

scholarly journals Silent crickets reveal the genomic footprint of recent adaptive trait loss

2018 ◽  
Author(s):  
Sonia Pascoal ◽  
Judith E. Risse ◽  
Xiao Zhang ◽  
Mark Blaxter ◽  
Timothee Cezard ◽  
...  
Keyword(s):  
Gene Expression ◽  
Signal Loss ◽  
Sexual Signal ◽  
Adaptive Trait ◽  
Field Crickets ◽  
Altered Gene Expression ◽  
Genome Wide ◽  
Altered Gene ◽  
High Density Linkage Map ◽  
Mutational Effect

Secondary trait loss is widespread and has profound consequences, from generating diversity to driving adaptation. Sexual trait loss is particularly common. Its genomic impact is challenging to reconstruct because most reversals occurred in the distant evolutionary past and must be inferred indirectly, and questions remain about the extent of disruption caused by pleiotropy, altered gene expression and loss of homeostasis. We tested the genomic signature of recent sexual signal loss in Hawaiian field crickets, Teleogryllus oceanicus. Song loss is controlled by a sex-linked Mendelian locus, flatwing, which feminises male wings by erasing sound-producing veins. This variant spread rapidly under pressure from an eavesdropping parasitoid fly. We sequenced, assembled and annotated the T. oceanicus genome, produced a high-density linkage map, and localised flatwing on the X chromosome. We characterised pleiotropic effects of flatwing, including changes in embryonic gene expression and alteration of another sexual signal, chemical pheromones. Song loss is associated with pleiotropy, hitchhiking and genome-wide regulatory disruption which feminises flatwing male pheromones. The footprint of recent adaptive trait loss illustrates R. A. Fisher's influential prediction that variants with large mutational effect sizes can invade genomes during the earliest stages of adaptation to extreme pressures, despite having severely disruptive genomic consequences.

Male satin bowerbirds (Ptilonorhynchus violaceus) compensate for sexual signal loss by enhancing multiple display features

2007 ◽  
Vol 94 (6) ◽  
pp. 473-476 ◽  
Author(s):  
Benjamin D. Bravery ◽  
Anne W. Goldizen
Keyword(s):  
Signal Loss ◽  
Sexual Signal ◽  
Ptilonorhynchus Violaceus ◽  
Satin Bowerbirds ◽  
Multiple Display

scholarly journals Testing the role of trait reversal in evolutionary diversification using song loss in wild crickets

2019 ◽  
Vol 116 (18) ◽  
pp. 8941-8949 ◽  
Author(s):  
Nathan W. Bailey ◽  
Sonia Pascoal ◽  
Fernando Montealegre-Z
Keyword(s):  
Rapid Evolution ◽  
Acoustic Signals ◽  
Signal Loss ◽  
Normal Range ◽  
Laser Doppler Vibrometry ◽  
Sexual Signal ◽  
Evolutionary Diversification ◽  
Field Crickets ◽  
Morphological Variants

The mechanisms underlying rapid macroevolution are controversial. One largely untested hypothesis that could inform this debate is that evolutionary reversals might release variation in vestigial traits, which then facilitates subsequent diversification. We evaluated this idea by testing key predictions about vestigial traits arising from sexual trait reversal in wild field crickets. In Hawaiian Teleogryllus oceanicus, the recent genetic loss of sound-producing and -amplifying structures on male wings eliminates their acoustic signals. Silence protects these “flatwing” males from an acoustically orienting parasitoid and appears to have evolved independently more than once. Here, we report that flatwing males show enhanced variation in vestigial resonator morphology under varied genetic backgrounds. Using laser Doppler vibrometry, we found that these vestigial sound-producing wing features resonate at highly variable acoustic frequencies well outside the normal range for this species. These results satisfy two important criteria for a mechanism driving rapid evolutionary diversification: Sexual signal loss was accompanied by a release of vestigial morphological variants, and these could facilitate the rapid evolution of novel signal values. Widespread secondary trait losses have been inferred from fossil and phylogenetic evidence across numerous taxa, and our results suggest that such reversals could play a role in shaping historical patterns of diversification.

Direct and indirect effects of sexual signal loss on female reproduction in the Pacific field cricket ( Teleogryllus oceanicus )

2019 ◽  
Vol 32 (12) ◽  
pp. 1382-1390 ◽  
Author(s):  
Justa L. Heinen‐Kay ◽  
Daina B. Strub ◽  
Susan L. Balenger ◽  
Marlene Zuk
Keyword(s):  
Indirect Effects ◽  
Field Cricket ◽  
Direct And Indirect Effects ◽  
Signal Loss ◽  
Female Reproduction ◽  
Sexual Signal ◽  
Teleogryllus Oceanicus ◽  
The Pacific

scholarly journals Sexual signal loss in field crickets maintained despite strong sexual selection favoring singing males

Evolution ◽  
2019 ◽  
Vol 73 (7) ◽  
pp. 1482-1489 ◽  
Author(s):  
Jessie C. Tanner ◽  
Elizabeth Swanger ◽  
Marlene Zuk
Keyword(s):  
Sexual Selection ◽  
Signal Loss ◽  
Sexual Signal ◽  
Field Crickets

Comparison of metal artifact reduction techniques in magnetic resonance imaging of carbon-reinforced PEEK and titanium spinal implants

2021 ◽  
pp. 028418512110290
Author(s):  
Georg Osterhoff ◽  
Florian A Huber ◽  
Laura C Graf ◽  
Ferdinand Erdlen ◽  
Hans-Christoph Pape ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Pedicle Screws ◽  
Artifact Reduction ◽  
Metal Artifact ◽  
Metal Artifact Reduction ◽  
Signal Loss ◽  
Resonance Imaging ◽  
Spinal Implants ◽  
Titanium Screws

Background Carbon-reinforced PEEK (C-FRP) implants are non-magnetic and have increasingly been used for the fixation of spinal instabilities. Purpose To compare the effect of different metal artifact reduction (MAR) techniques in magnetic resonance imaging (MRI) on titanium and C-FRP spinal implants. Material and Methods Rod-pedicle screw constructs were mounted on ovine cadaver spine specimens and instrumented with either eight titanium pedicle screws or pedicle screws made of C-FRP and marked with an ultrathin titanium shell. MR scans were performed of each configuration on a 3-T scanner. MR sequences included transaxial conventional T1-weighted turbo spin echo (TSE) sequences, T2-weighted TSE, and short-tau inversion recovery (STIR) sequences and two different MAR-techniques: high-bandwidth (HB) and view-angle-tilting (VAT) with slice encoding for metal artifact correction (SEMAC). Metal artifact degree was assessed by qualitative and quantitative measures. Results There was a much stronger effect on artifact reduction with using C-FRP implants compared to using specific MRI MAR-techniques (screw shank: P < 0.001; screw tulip: P < 0.001; rod: P < 0.001). VAT-SEMAC sequences were able to reduce screw-related signal loss artifacts in constructs with titanium screws to a certain degree. Constructs with C-FRP screws showed less artifact-related implant diameter amplification when compared to constructs with titanium screws ( P < 0.001). Conclusion Constructs with C-FRP screws are associated with significantly less artifacts compared to constructs with titanium screws including dedicated MAR techniques. Artifact-reducing sequences are able to reduce implant-related artifacts. This effect is stronger in constructs with titanium screws than in constructs with C-FRP screws.

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