Testing the evolutionary constraints of metamorphosis: The ontogeny of head shape in Triturus newts.
2019
Аутори:
Vučić, TijanaSibinović, Maša
Vukov, Tanja
Tomašević Kolarov, Nataša
Cvijanović, Milena
Ivanović, Ana
Тип документа:
Чланак у часопису (Рецензирана верзија)
,
© 2019 The Author(s). Evolution © 2019 The Society for the Study of Evolution.
Метаподаци
Приказ свих података о документуАпстракт:
In vertebrates with complex, biphasic, life cycles, larvae have a distinct morphology and ecological preferences compared to metamorphosed juveniles and adults. In amphibians, abrupt and rapid metamorphic changes transform aquatic larvae to terrestrial juveniles. The main aim of this study is to test whether, relative to larval stages, metamorphosis (1) resets the pattern of variation between ontogenetic stages and species, (2) constrains intraspecific morphological variability, and (3) similar to the "hour-glass" model reduces morphological disparity. We explore postembryonic ontogenetic trajectories of head shape (from hatching to completed metamorphosis) of two well-defined, morphologically distinct Triturus newts species and their F1 hybrids. Variation in head shape is quantified and compared on two levels: dynamic (across ontogenetic stages) and static (at a particular stage). Our results show that the ontogenetic trajectories diverge early during development and continue to diverge throughout larval stages and metamorphosis. The high within-group variance and the largest disparity level (between-group variance) characterize the metamorphosed stage. Hence, our results indicate that metamorphosis does not canalize head shape variation generated during larval development and that metamorphosed phenotype is not more constrained relative to larval ones. Therefore, metamorphosis cannot be regarded as a developmental constraint, at least not for salamander head shape.
Напомена:
This is the peer reviewed version of the following article: Vučić T, Sibinović M, Vukov TD, Tomašević Kolarov N, Cvijanović M, Ivanović A. Testing the evolutionary constraints of metamorphosis: The ontogeny of head shape in Triturus newts. Evolution. 2019, which has been published in final form at http://doi.org/10.1111/evo.13743. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Кључне речи:
Developmental constraints; Hybridization; Metamorphosis; Ontogenetic trajectories; Shape disparityИзвор:
Evolution; International Journal of Organic Evolution, 2019Финансирање / пројекти:
- Диверзитет водоземаца и гмизаваца Балкана: еволуциони аспекти и конзервација (RS-MESTD-Basic Research (BR or ON)-173043)
DOI: 10.1111/evo.13743
ISSN: 0014-3820
PubMed: 30990882
WoS: 000485479600014
Scopus: 2-s2.0-85065044086
URI
https://onlinelibrary.wiley.com/doi/abs/10.1111/evo.13743https://radar.ibiss.bg.ac.rs/handle/123456789/3348