Analysis of the spatial and temporal dynamics of marine bivalve evolution: Combining molecular and densely-sampled fossil data

海洋双壳类进化的时空动态分析：结合分子和密集采样的化石数据

• 批准号: 2049627
• 负责人: David Jablonski
• 金额: $ 28.28万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-04-15 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2049627&HistoricalAwards=false
• 关键词: Analysis; spatial; temporal; dynamics; marine

Clams are diverse and abundant in both modern and ancient freshwater and marine environments, and today more than 9,000 species exist. Modern marine clams are economically very important not only as food for humans but also because they serve as food for other animals that humans depend on, like fish. In spite of this diversity and importance, the evolutionary history of the group is not well understood, and this project will develop a more detailed understanding of the 500-million-year evolutionary history of clams. This project will use information from DNA sequences as well as from the anatomy of modern and fossil species to reconstruct evolutionary patterns. Moreover, this information will be employed to consider various key questions such as how the pace of evolution in the group has varied through time, and further the extent to which information on rates of evolution derived from the study of DNA sequences differs from that information gathered from the study of fossils. The project will also consider why clam species in the tropics are more diverse than those found in polar regions, and how differences in ecology influence rates of evolution. This research will provide training for undergraduates, graduate students, and a postdoctoral scholar, and the results will be used to develop high school lesson plans that focus on the causes and consequences of extinction. This project aims to reconstruct evolutionary patterns in the highly diverse bivalve clade using information from the rich marine bivalve fossil record, along with genetic information from extant species. This group, since it evolved in the Cambrian period, has fluctuated significantly in species diversity and provides an exceptional opportunity to consider how information from fossil and extant taxa can be incorporated into phylogenetic studies. The project will also focus on how various ecological traits, including larval type, have influenced rates of speciation and extinction in the group through time. The project will first involve developing a hypothesis of relationship for all extant bivalve families using information on DNA sequences housed in GenBank, along with information from morphology. Then, building on the family-level phylogeny, a species-level phylogeny spanning all of Bivalvia will be developed with an especial focus on marine and fossil taxa. Tests will be conducted to ascertain differences in diversification rates under alternative evolutionary models applied to genetic and fossil-based phylogenies. An additional element will be to use these phylogenies to test hypotheses on why bivalves, like most other groups, show latitudinal diversity gradients. Previous studies of these diversity gradients have primarily focused on extant terrestrial taxa. This study will provide an opportunity to consider this issue in greater detail in marine organisms. Further, the study, through incorporation of fossil taxa, will consider how latitudinal diversity gradients have changed through time, adding an important temporal component not often considered.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在现代和古老的淡水和海洋环境中，蛤lam多样而丰富，如今存在9,000多种。现代海洋蛤在经济上不仅是人类食品，而且还因为它们是人类依赖的其他动物的食物，例如鱼类。尽管有这种多样性和重要性，但该小组的进化历史尚未得到充分的了解，该项目将对蛤lam的5亿年历史有更详细的了解。该项目将使用DNA序列以及现代和化石物种的解剖结构中的信息来重建进化模式。此外，将采用此信息来考虑各种关键问题，例如该小组的进化速度如何随着时间的流逝而变化，以及进一步的程度，从DNA序列的研究中得出的进化速率的信息与收集的信息不同从化石研究中。该项目还将考虑为什么热带地区的蛤lam物种比在极地地区发现的种类更多样化，以及生态学上的差异如何影响进化的速度。这项研究将为本科生，研究生和博士后学者提供培训，结果将用于制定高中课程计划，以关注灭绝的原因和后果。该项目旨在使用来自Rich Marine Bivalve化石记录的信息以及现有物种的遗传信息来重建高度多样化的双壳类进化枝中的进化模式。由于该组在寒武纪时期发展，因此在物种多样性中显着波动，并提供了一个非凡的机会来考虑如何将化石和现存分类单元的信息纳入系统发育研究中。该项目还将重点关注各种生态特征，包括幼虫类型，如何影响整个小组的形成率和灭绝。该项目将首先涉及使用GenBank中包含的DNA序列的信息以及形态学中的信息，为所有现有双壳类的家庭建立关系假设。然后，在家庭水平的系统发育基础上，将开发出跨越所有比瓦尔维亚的物种水平的系统发育，特别关注海洋和化石分类群。测试将在应用于遗传和基于化石的系统发育的替代进化模型下确定多样化速率的差异。另一个元素将是使用这些系统发育来检验为什么双壳类动物（与大多数其他群体）显示出纬度多样性梯度的假设。这些多样性梯度的先前研究主要集中在现有的陆生类群上。这项研究将提供一个机会，以更详细地考虑海洋生物。此外，该研究通过纳入化石类群，将考虑纬度多样性梯度如何随着时间的流逝而变化，添加了不经常考虑的重要时间成分。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子来评估的值得支持的优点和更广泛的影响审查标准。

项目成果

Convergence and contingency in the evolution of a specialized mode of life: multiple origins and high disparity of rock-boring bivalves

• DOI: 10.1098/rspb.2022.1907
• 发表时间: 2023-02-08
• 期刊: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
• 影响因子: 4.7
• 作者: Collins，Katie S. S.;Edie，Stewart M. M.;Jablonski，David
• 通讯作者: Jablonski，David

High-throughput micro-CT scanning and deep learning segmentation workflow for analyses of shelly invertebrates and their fossils: Examples from marine Bivalvia

• DOI: 10.3389/fevo.2023.1127756
• 发表时间: 2023-03-08
• 期刊: FRONTIERS IN ECOLOGY AND EVOLUTION
• 影响因子: 3
• 作者: Edie, Stewart M. M.;Collins, Katie S. S.;Jablonski, David
• 通讯作者: Jablonski, David

Cambrian origin but no early burst in functional disparity for Class Bivalvia

• DOI: 10.1098/rsbl.2023.0157
• 发表时间: 2023-05-31
• 期刊: BIOLOGY LETTERS
• 影响因子: 3.3
• 作者: Zhou，Sharon;Edie，Stewart M.;Jablonski，David
• 通讯作者: Jablonski，David

Calibrating phylogenies assuming bifurcation or budding alters inferred macroevolutionary dynamics in a densely sampled phylogeny of bivalve families

• DOI: 10.1098/rspb.2021.2178
• 发表时间: 2021-12-08
• 期刊: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
• 影响因子: 4.7
• 作者: Crouch, Nicholas M. A.;Edie, Stewart M.;Jablonski, David
• 通讯作者: Jablonski, David

Evolutionary modularity, integration and disparity in an accretionary skeleton: analysis of venerid Bivalvia

• DOI: 10.1098/rspb.2021.1199
• 发表时间: 2022-01-26
• 期刊: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
• 影响因子: 4.7
• 作者: Edie, Stewart M.;Khouja, Safia C.;Jablonski, David
• 通讯作者: Jablonski, David