Single-cell atlases of two lophotrochozoan larvae highlight their complex evolutionary histories.

ABSTRACT: Pelagic larval stages are widespread across animals, yet it is unclear whether larvae were present in the last common ancestor of animals or whether they evolved multiple times due to common selective pressures. Many marine larvae are at least superficially similar; they are small, swim through the beating of bands of cilia, and sense the environment with an apical organ. To understand these similarities, we have generated single-cell atlases for marine larvae from two animal phyla and have compared their cell types. We found clear similarities among ciliary band cells and between neurons of the apical organ in the two larvae pointing to possible homology of these structures, suggesting a single origin of larvae within Spiralia. We also find several clade-specific innovations in each larva

SUBMITTER: Piovani L 

PROVIDER: S-EPMC10396302 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature