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Structural and Developmental Disparity in the Tentacles of the Moon Jellyfish Aurelia sp.1

Author(s)
Nakanishi, Nagayasu; Hensley, Nicholai M.; Cozzolino, Kira; Tabatabaee, Mariam; Martin, Michelle; Hartenstein, Volker; Jacobs, David K.; Gold, David; ... Show more Show less
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Abstract
Tentacles armed with stinging cells (cnidocytes) are a defining trait of the cnidarians, a phylum that includes sea anemones, corals, jellyfish, and hydras. While cnidarian tentacles are generally characterized as structures evolved for feeding and defense, significant variation exists between the tentacles of different species, and within the same species across different life stages and/or body regions. Such diversity suggests cryptic distinctions exist in tentacle function. In this paper, we use confocal and transmission electron microscopy to contrast the structure and development of tentacles in the moon jellyfish, Aurelia species 1. We show that polyp oral tentacles and medusa marginal tentacles display markedly different cellular and muscular architecture, as well as distinct patterns of cellular proliferation during growth. Many structural differences between these tentacle types may reflect biomechanical solutions to different feeding strategies, although further work would be required for a precise mechanistic understanding. However, differences in cell proliferation dynamics suggests that the two tentacle forms lack a conserved mechanism of development, challenging the textbook-notion that cnidarian tentacles can be homologized into a conserved bauplan.
Date issued
2015-08
URI
http://hdl.handle.net/1721.1/99772
Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Journal
PLOS ONE
Publisher
Public Library of Science
Citation
Gold, David A., Nagayasu Nakanishi, Nicholai M. Hensley, Kira Cozzolino, Mariam Tabatabaee, Michelle Martin, Volker Hartenstein, and David K. Jacobs. “Structural and Developmental Disparity in the Tentacles of the Moon Jellyfish Aurelia Sp.1.” Edited by Robert E. Steele. PLoS ONE 10, no. 8 (August 4, 2015): e0134741.
Version: Final published version
ISSN
1932-6203

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