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Data from: Recurrent evolution of small body size and loss of the sword ornament in Northern swordtail fish

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Datum der Erstveröffentlichung

2024

Autor:innen

Preising, Gabriel
Gunn, Theresa
Baczenas, John
Powell, Daniel
Dodge, Tristram
Sewell, Sean
Pollock, Alexa
Machin Kairuz, Jose Angel
Savage, Markita
Lu, Yuan

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Core Facility der Universität Konstanz
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Publikationsstatus
Published

Zusammenfassung

Across the tree of life, species have repeatedly evolved similar phenotypes. While well-studied for ecological traits, there is also evidence for recurrent evolution of sexually selected traits. Swordtail fish (Xiphophorus) are a classic model system for studying sexual selection, and female Xiphophorus exhibit strong mate preferences for large male body size and a range of sexually dimorphic ornaments. Interestingly, sexually selected traits have also been lost multiple times in the genus. However, there has been uncertainty over the number of losses of ornamentation and large body size because phylogenetic relationships between species in this group have historically been controversial, partially due to prevalent gene flow. Here, we use whole-genome sequencing approaches to re-examine phylogenetic relationships within a Xiphophorus clade that varies in the presence and absence of sexually selected traits. Using wild-caught individuals, we determine the phylogenetic placement of a small, unornamented species, X. continens, confirming an additional loss of ornamentation and large body size in the clade. With these revised phylogenetic relationships, we analyze evidence for coevolution between body size and other sexually selected traits using phylogenetic comparative methods. These results provide insights into the evolutionary pressures driving the recurrent loss of suites of sexually selected traits.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Sexual selection, Body size, sword ornament, Hybridization, Xiphophorus, FOS: Biological sciences, FOS: Biological sciences

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Publikation
Zeitschriftenartikel
Recurrent evolution of small body size and loss of the sword ornament in Northern swordtail fish
(2024) Preising, Gabriel A.; Gunn, Theresa; Baczenas, John J.; Powell, Daniel L.; Dodge, Tristram O.; Sewell, Sean T.; Pollock, Alexa; Machin Kairuz, Jose Angel; Meyer, Axel; Schumer, Molly et al.
Erschienen in: Evolution. Oxford University Press. 2024, 78(12), S. 2017-2031. ISSN 0014-3820. eISSN 1558-5646. Verfügbar unter: doi: 10.1093/evolut/qpae124
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ISO 690PREISING, Gabriel, Theresa GUNN, John BACZENAS, Daniel POWELL, Tristram DODGE, Sean SEWELL, Alexa POLLOCK, Jose Angel MACHIN KAIRUZ, Markita SAVAGE, Yuan LU, Meredith FITSCHEN-BROWN, Axel MEYER, Manfred SCHARTL, Molly CUMMINGS, Sunishka THAKUR, Callen INMAM, Oscar RIOS-CARDENAS, Molly MORRIS, Michael TOBLER, Molly SCHUMER, 2024. Data from: Recurrent evolution of small body size and loss of the sword ornament in Northern swordtail fish
BibTex
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