H2020Индивидуална стипендия2022–2024

MEGAN · Mega-evolutionary dynamics of anurans

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2022-04-01 → 2024-03-31
Финансиране от ЕС: 174 806 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Еволюцията на жабите и жабеците се анализира чрез промените в морфологията на техните ларви. Това помага да се разбере как се появява биоразнообразието и защо някои групи организми развиват различни физически характеристики по-бързо от други.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Mega-evolutionary dynamics of anurans

Understanding the origin of biodiversity, how clades diversify, and how new phenotypes arise are major subjects in evolutionary biology. It is clear that phenotypic diversity is distributed unequally and non-randomly across the tree of life; however, how such contrasting patterns of morphological disparity among lineages emerged is still a challenging question.Unequal phenotypic diversity between closely related lineages can be the result of different ecological opportunities, and one mechanism that has been evoked to explain early high disparity is adaptive radiation. Adaptive radiation is marked by rapid phenotypic evolution, increase of morphospace occupation, and high rates of taxonomic diversification. Once niches are occupied, phenotypic disparities and diversification would reach lower rates and eventually stabilize. Thus, it would be expected that the early diversification of basal lineages would be marked by high phenotypic disparity, whereas less inclusive clades would be characterized by lower phenotypic variation. Due to this rapid expansion of morphospace in a short period of time, Gaylord Simpson called this early burst process mega-evolution. While mega-evolution explains the evolution of several groups, it has been challenged by empirical data in others. In MEGAN I tested this hypothesis regarding the evolution of anurans (frogs and toads) using larval morphology as evidence. MEGAN comprised three working packages (WPs) that reflected the main research objectives. Besides those, I also had training and skill transfer objectives. The overall goals of the proposal were attained, although some deliverables and milestones had to be modified due to different circumstances. 1: To determine how larval characters are distributed in the anuran tree of life. 2: To reconstruct the phylomorphospace of anuran larvae. 3: To determine the rates of diversification of anurans based on larval characters.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Adaptive radiation has been pointed out as the main force responsible for phenotypic and taxonomic diversity. Rapid phenotypic evolution and expansion in the morphospace tend to cease as new niches are occupied, and this early burst pattern has been called mega-evolution. The mega-evolution hypothesis explains the diversification patterns of many but not all clades, and the early evolution of some lineages, such as that of anurans, remains obscure. In MEGAN, I will test the mega-evolution hypothesis for anuran diversification based on larval morphology. This proposal comprises three work packages that reflect the main research objectives:1) To determine how larval characters are distributed in the anuran tree of life; 2) To reconstruct the phylomorphospace of anuran larvae; 3) To determine the rates of diversification of anurans based on larval characters. Taxonomic sampling is designed to cover the entire phylogenetic, phenotypic, and ecological diversity of anuran larvae. Transformation series will be individualized from all larval phenotypic systems and characters will be optimized in a time-calibrated; optimizations will be used to reconstruct the phylomorphospace and to estimate evolutionary rates in all branches. MEGAN is aligned with the Horizon 2020 FAIR data management and Open Science, and thus, both data and results will be publicly available. Moreover, I will disseminate and communicate the results of MEGAN in freely accessible medias and scientific events. With MEGAN, I intend to gain new skills that will substantially augment my qualification and enable me to reach a higher level in my career and to perform excellence-level research.

Оригинален текст от CORDIS (на английски).

Участници

LEIBNIZ-INSTITUT ZUR ANALYSE DES BIODIVERSITATSWANDELS · BONNКоординаторГермания