Cassiosomes are stinging-cell structures in the mucus of the upside-down jellyfish Cassiopea xamachana

Ames, Cheryl L.; Klompen, Anna M. L.; Badhiwala, Krishna; Muffett, Kade; Reft, Abigail J.; Kumar, Mehr; Janssen, Jennie D.; Schultzhaus, Janna N.; Field, Lauren D.; Muroski, Megan E.; Bezio, Nick; Robinson, Jacob T.; Leary, Dagmar H.; Cartwright, Paulyn; Collins, Allen G.; Vora, Gary J.

doi:10.1038/s42003-020-0777-8

i

Cassiosomes are stinging-cell structures in the mucus of the upside-down jellyfish Cassiopea xamachana

Supporting Files

2020
By Ames, Cheryl L. ; Klompen, Anna M. L. ; Badhiwala, Krishna ; ...

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Journal Title:

Communications Biology
Personal Author:

Ames, Cheryl L. ; Klompen, Anna M. L. ; Badhiwala, Krishna ; Muffett, Kade ; Reft, Abigail J. ; Kumar, Mehr ; Janssen, Jennie D. ; Schultzhaus, Janna N. ; Field, Lauren D. ; Muroski, Megan E. ; Bezio, Nick ; Robinson, Jacob T. ; Leary, Dagmar H. ; Cartwright, Paulyn ; Collins, Allen G. ; Vora, Gary J.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center)
Description:

Snorkelers in mangrove forest waters inhabited by the upside-down jellyfish Cassiopea xamachana report discomfort due to a sensation known as stinging water, the cause of which is unknown. Using a combination of histology, microscopy, microfluidics, videography, molecular biology, and mass spectrometry-based proteomics, we describe C. xamachana stinging-cell structures that we term cassiosomes. These structures are released within C. xamachana mucus and are capable of killing prey. Cassiosomes consist of an outer epithelial layer mainly composed of nematocytes surrounding a core filled by endosymbiotic dinoflagellates hosted within amoebocytes and presumptive mesoglea. Furthermore, we report cassiosome structures in four additional jellyfish species in the same taxonomic group as C. xamachana (Class Scyphozoa; Order Rhizostomeae), categorized as either motile (ciliated) or nonmotile types. This inaugural study provides a qualitative assessment of the stinging contents of C. xamachana mucus and implicates mucus containing cassiosomes and free intact nematocytes as the cause of stinging water.
Keywords:

Jellyfishes Mangroves
Source:

Commun Biol. 2020 Feb 13;3(1):67.
DOI:

https://doi.org/10.1038/s42003-020-0777-8
ISSN:

2399-3642
Format:

PDF
Publisher:

Springer Science and Business Media LLC
Pubmed ID:

32054971
Pubmed Central ID:

PMC7018847
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha256:61747c1bae14beb6721744c86c6c627b34dd8939cfd44a50f7b2bd22c717dd51
Download URL:

https://repository.library.noaa.gov/view/noaa/50098/noaa_50098_DS1.pdf
File Type:

[PDF - 15.04 MB ]

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