Evolutionary-Ecological Aspects of the Origin and Early Diversification of Multicellular Animals

IF 0.7 4区地球科学 Q4 PALEONTOLOGY

Paleontological Journal Pub Date : 2024-02-13 DOI:10.1134/s0031030123110114

S. V. Rozhnov

引用次数: 0

Abstract

Oxygen oases were the ecological niches where the evolutionary processes that led to the emergence of the first multicellular animals probably took place. These oases likely appeared in zones of maximum photosynthesis at depths of 10–30 meters in the pelagic zone and on the sea bottom, due to the delay in the release of oxygen from seawater into the atmosphere. The likelihood of the emergence of multicellularity among choanoflagellates, ancestral to Metazoa, is supported by their wide range of life forms, which through various morphogenetic pathways developed the main archetypes postulated by the hypotheses of Phagocytella, Gastraea, Synzoospores and their modifications.

Abstract Image

查看原文本刊更多论文

多细胞动物起源和早期多样化的进化-生态学问题

摘要氧气绿洲是导致第一批多细胞动物出现的进化过程可能发生的生态位。由于海水中的氧气释放到大气中的时间推迟，这些绿洲很可能出现在10-30米深的水层区和海底光合作用最旺盛的区域。藻鞭毛虫是后生动物的祖先，其多种多样的生命形式支持了它们出现多细胞性的可能性，这些生命形式通过各种形态发生途径，发展出了噬菌体假说、Gastraea 假说、合生孢子假说及其变体假说所假定的主要原型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Paleontological Journal 地学-古生物学

CiteScore

1.20

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Paleontological Journal (Paleontologicheskii zhurnal) is the principal Russian periodical in paleontology. The journal publishes original work on the anatomy, morphology, and taxonomy of fossil organisms, as well as their distribution, ecology, and origin. It also publishes studies on the evolution of organisms, ecosystems, and the biosphere and provides invaluable information on global biostratigraphy with an emphasis on Eastern Europe and Asia.