دورية أكاديمية
أعرض في EDS

Sexual dimorphism in skull size and shape of Laticauda colubrina (Serpentes: Elapidae).

التفاصيل البيبلوغرافية
العنوان: Sexual dimorphism in skull size and shape of Laticauda colubrina (Serpentes: Elapidae).
المؤلفون: Borczyk B; Department of Evolutionary Biology and Coservation of Vertebrates, University of Wroclaw, Wrocław, Poland.
المصدر: PeerJ [PeerJ] 2023 Oct 18; Vol. 11, pp. e16266. Date of Electronic Publication: 2023 Oct 18 (Print Publication: 2023).
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: PeerJ Inc Country of Publication: United States NLM ID: 101603425 Publication Model: eCollection Cited Medium: Internet ISSN: 2167-8359 (Electronic) Linking ISSN: 21678359 NLM ISO Abbreviation: PeerJ Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Corte Madera, CA : PeerJ Inc.
مواضيع طبية MeSH: Laticauda* , Colubrina* , Hydrophiidae*, Female ; Male ; Animals ; Sex Characteristics ; Elapidae ; Skull/anatomy & histology ; Water
مستخلص: Background: Sexual dimorphism in size and shape is widespread among squamate reptiles. Sex differences in snake skull size and shape are often accompanied by intersexual feeding niche separation. However, allometric trajectories underlying these differences remain largely unstudied in several lineages. The sea krait Laticauda colubrina (Serpentes: Elapidae) exhibits very clear sexual dimorphism in body size, with previous studies having reported females to be larger and to have a relatively longer and wider head. The two sexes also differ in feeding habits: males tend to prey in shallow water on muraenid eels, whereas females prey in deeper water on congerid eels.
Methods: I investigated sexual dimorphism in skull shape and size as well as the pattern of skull growth, to determine whether males and females follow the same ontogenetic trajectories. I studied skull characteristics and body length in 61 male and female sea kraits.
Results: The sexes differ in skull shape. Males and females follow distinct allometric trajectories. Structures associated with feeding performance are female-biased, whereas rostral and orbital regions are male-biased. The two sexes differ in allometric trajectories of feeding-related structures (female biased) that correspond to dietary divergence between the sexes.
Conclusions: Sea kraits exhibit clear sexual dimorphism in the skull form that may be explained by intersexual differences in the feeding habits as well as reproductive roles. The overall skull growth pattern resembles the typical pattern observed in other tetrapods.
Competing Interests: The author declares that there are no competing interests.
(©2023 Borczyk.)
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فهرسة مساهمة: Keywords: Allometry; Morphology; Niche divergence; Scaling; Sexual dimorphism; Skull
المشرفين على المادة: 059QF0KO0R (Water)
تواريخ الأحداث: Date Created: 20231023 Date Completed: 20231102 Latest Revision: 20231106
رمز التحديث: 20231107
مُعرف محوري في PubMed: PMC10590095
DOI: 10.7717/peerj.16266
PMID: 37868070
قاعدة البيانات: MEDLINE
الوصف
تدمد:2167-8359
DOI:10.7717/peerj.16266