دورية أكاديمية
3D genital shape complexity in female marine mammals.
العنوان: | 3D genital shape complexity in female marine mammals. |
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المؤلفون: | Orbach DN; Department of Life Sciences Texas A&M University- Corpus Christi Corpus Christi TX USA.; Department of Biological Sciences Mount Holyoke College South Hadley MA USA., Brassey CA; School of Science and the Environment Manchester Metropolitan University Manchester UK., Gardiner JD; Department of Musculoskeletal and Ageing Science Institute of Lifecourse and Medical Sciences University of Liverpool Liverpool UK., Brennan PLR; Department of Biological Sciences Mount Holyoke College South Hadley MA USA. |
المصدر: | Ecology and evolution [Ecol Evol] 2021 Feb 15; Vol. 11 (7), pp. 3210-3218. Date of Electronic Publication: 2021 Feb 15 (Print Publication: 2021). |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | Publisher: Blackwell Pub. Ltd Country of Publication: England NLM ID: 101566408 Publication Model: eCollection Cited Medium: Print ISSN: 2045-7758 (Print) Linking ISSN: 20457758 NLM ISO Abbreviation: Ecol Evol Subsets: PubMed not MEDLINE |
أسماء مطبوعة: | Original Publication: [Oxford] : Blackwell Pub. Ltd. |
مستخلص: | Comparisons of 3D shapes have recently been applied to diverse anatomical structures using landmarking techniques. However, discerning evolutionary patterns can be challenging for structures lacking homologous landmarks. We used alpha shape analyses to quantify vaginal shape complexity in 40 marine mammal specimens including cetaceans, pinnipeds, and sirenians. We explored phylogenetic signal and the potential roles of natural and sexual selection on vaginal shape evolution. Complexity scores were consistent with qualitative observations. Cetaceans had a broad range of alpha complexities, while pinnipeds were comparatively simple and sirenians were complex. Intraspecific variation was found. Three-dimensional surface heat maps revealed that shape complexity was driven by invaginations and protrusions of the vaginal wall. Phylogenetic signal was weak and metrics of natural selection (relative neonate size) and sexual selection (relative testes size, sexual size dimorphism, and penis morphology) did not explain vaginal complexity patterns. Additional metrics, such as penile shape complexity, may yield interesting insights into marine mammal genital coevolution. We advocate for the use of alpha shapes to discern patterns of evolution that would otherwise not be possible in 3D anatomical structures lacking homologous landmarks. Competing Interests: None declared. (© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.) |
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فهرسة مساهمة: | Keywords: alpha shape; genital; marine mammal; sexual selection; vaginal lumen |
تواريخ الأحداث: | Date Created: 20210412 Latest Revision: 20240407 |
رمز التحديث: | 20240407 |
مُعرف محوري في PubMed: | PMC8019040 |
DOI: | 10.1002/ece3.7269 |
PMID: | 33841778 |
قاعدة البيانات: | MEDLINE |
تدمد: | 2045-7758 |
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DOI: | 10.1002/ece3.7269 |