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Self-Repair and Sleep in Jellyfish


Abrams, Michael Jacob (2018) Self-Repair and Sleep in Jellyfish. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/69br-kb59.


Studying the cnidarian jellyfish, we have pursued basic biological questions related to self-repair mechanisms and sleep behavior. Working in Aurelia we have discovered a novel strategy of self-repair; we determined that they can undergo body reorganization after amputations that culminates in the recovery of essential radial symmetry without rebuilding lost parts. Working with Cassiopea, we have, for the first time, identified a behavioral sleep-like state in an animal without a centralized nervous system, supporting the hypothesis that sleep is ancestral in animals.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Self-repair, Regeneration, Sleep, Ancestral Systems, Jellyfish
Degree Grantor:California Institute of Technology
Division:Biology and Biological Engineering
Major Option:Biology
Awards:Miller Fellowship for Research at Berkeley
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Goentoro, Lea A.
Thesis Committee:
  • Hay, Bruce A. (chair)
  • Dabiri, John O.
  • Sternberg, Paul W.
  • Goentoro, Lea A.
Defense Date:17 May 2018
Non-Caltech Author Email:michaelabrams88 (AT)
Funding AgencyGrant Number
NSF Graduate Research Fellowship1144469
Projects:Self-repair in Aurelia Aurita, Sleep in Cassiopea
Record Number:CaltechTHESIS:06042018-104549400
Persistent URL:
Abrams, Michael Jacob0000-0003-1864-1706
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11017
Deposited By: Michael Abrams
Deposited On:06 Jun 2018 20:07
Last Modified:04 Oct 2019 00:22

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