The lined sea anemone, Edwarsiella lineata, is a recently evolved parasite that is a particularly good model for investigating the developmental evolution of a derived life cycle. The larva of E. lineata parasitizes the pelagic ctenophore, Mnemiopsis leidyi. When situated in the host, E. lineata assumes a novel vermiform body plan and feeds upon the ctenophore's gut contents. When ready to exit the host, or upon death of the host, the parasite morphs from a worm into a planula larva. The planulae are active swimmers, and can follow one of two developmental trajectories, depending on the environment: if presented with a novel host, they can re-assume a parasitic life style; however, in the absence of a second host, they can develop into an adult polyp. The polyps live in dense aggregates on the seafloor or on other available hard substrates. Importantly, the parasite is easily collected in infected ctenophores, and it can be maintained indefinitely in the lab as an adult polyp or for several months as a parasite inside a ctenophore host. The internal and external anatomy of the derived parasitic body plan is radically distinct from the planula larva or the adult polyp. The derived developmental trajectory that leads from the planula to the vermiform parasite can be compared directly to the ancestral developmental pathway that leads from the planula to the polyp. Additionally, the ontogeny of E. lineata may be compared to a very closely related free-living outgroup: the starlet sea anemone, Nematostella vectensis, which is a leading cnidarian model system for development and genomics.
Welcome to EdwardsiellaBase! This website is part of the cnidarian suite of sites created by the Finnerty Lab. The databases are described in EdwardsiellaBase.
We recommend starting with the Search option to view what is available on our site, or use BLAST to look for your sequences of interest on the site.
The reads are currently visable against the transcriptome utilizing JBrowse v1.4.2 under the JBrowse link. There is an upcoming new release of JBrowse that will be installed in the coming months.
|Edwardsiella lineata in the Latest Literature|
Stefanik DJ, Lubinski TJ, Granger BR, Byrd AL, Reitzel AM, DeFilippo L, Lorenc A, Finnerty JR. Production of a reference transcriptome and transcriptomic database (EdwardsiellaBase) for the lined sea anemone, Edwardsiella lineata, a parasitic cnidarian. BMC Genomics. 2014 Jan 28;15:71. PMID: 24467778
Reitzel AM, Daly M, Sullivan JC, Finnerty JR. Comparative anatomy and histology of developmental and parasitic stages in the life cycle of the lined sea anemone Edwardsiella lineata. J Parasitol. 2009 Feb;95(1):100-12. PMID: 18656992
Reitzel AM, Sullivan JC, Brown BK, Chin DW, Cira EK, Edquist SK, Genco BM, Joseph OC, Kaufman CA, Kovitvongsa K, Muñoz MM, Negri TL, Taffel JR, Zuehlke RT, Finnerty JR. Ecological and developmental dynamics of a host-parasite system involving a sea anemone and two ctenophores. J Parasitol. 2007 Dec;93(6):1392-402. PMID: 18314686
Reitzel AM, Sullivan JC, Finnerty JR. Qualitative shift to indirect development in the parasitic sea anemone Edwardsiella lineata. Integr Comp Biol. 2006 Dec;46(6):827-37. PMID: 21672788
Freudenthal AR, Joseph PR. Seabather's eruption. N Engl J Med. 1993 Aug 19;329(8):542-4. PMID: 8336754
|Edwardsiella lineata Literature Search|
Edwardsiella lineata Genomics & Transcriptomics Database
Created by: Tristan Lubinski, Brian Granger, and Sarah McAnulty
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Contact me at CnidTeam@gmail.com