مورد إلكتروني
Prenatal Developmental Trajectories of Fluctuating Asymmetry in Bat Humeri
| العنوان: | Prenatal Developmental Trajectories of Fluctuating Asymmetry in Bat Humeri |
|---|---|
| المؤلفون: | López-Aguirre, C, Hand, SJ, Koyabu, D, Tu, VT, Wilson, LAB |
| بيانات النشر: | 2021-05-26 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Fluctuating asymmetry (random fluctuations between the left and right sides of the body) has been interpreted as an index to quantify both the developmental instabilities and homeostatic capabilities of organisms, linking the phenotypic and genotypic aspects of morphogenesis. However, studying the ontogenesis of fluctuating asymmetry has been limited to mostly model organisms in postnatal stages, missing prenatal trajectories of asymmetry that could better elucidate decoupled developmental pathways controlling symmetric bone elongation and thickening. In this study, we quantified the presence and magnitude of asymmetry during the prenatal development of bats, focusing on the humerus, a highly specialized bone adapted in bats to perform under multiple functional demands. We deconstructed levels of asymmetry by measuring the longitudinal and cross-sectional asymmetry of the humerus using a combination of linear measurements and geometric morphometrics. We tested the presence of different types of asymmetry and calculated the magnitude of size-controlled fluctuating asymmetry to assess developmental instability. Statistical support for the presence of fluctuating asymmetry was found for both longitudinal and cross-sectional asymmetry, explaining on average 16% of asymmetric variation. Significant directional asymmetry accounted for less than 6.6% of asymmetric variation. Both measures of fluctuating asymmetry remained relatively stable throughout ontogeny, but cross-sectional asymmetry was significantly different across developmental stages. Finally, we did not find a correspondence between developmental patterns of longitudinal and cross-sectional asymmetry, indicating that processes promoting symmetrical bone elongation and thickening work independently. We suggest various functional pressures linked to newborn bats’ ecology associated with longitudinal (altricial flight capabilities) and cross-sectional (precocial clinging ability) developmental asymmetry differenti |
| مصطلحات الفهرس: | text, Journal Article, Journal Article |
| URL: | Frontiers in Cell and Developmental Biology, 9 |
| الإتاحة: | Open access content. Open access content https://creativecommons.org/licenses/by-nc-nd/4.0 |
| أرقام أخرى: | LJ1 oai:unsworks.library.unsw.edu.au:1959.4/unsworks_76324 10.3389/fcell.2021.639522 urn:issn:2296-634X 1259604204 |
| المصدر المساهم: | UNIV OF NEW S WALES From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1259604204 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |