The histology of Nanomia bijuga (Hydrozoa: Siphonophora)

The siphonophore Nanomia bijuga is a pelagic hydrozoan (Cnidaria) with complex morphological organization. Each siphonophore is made up of many asexually produced, genetically identical zooids that are functionally specialized and morphologically distinct. These zooids predominantly arise by budding...

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Main Authors:	Church, Samuel H., Siebert, Stefan, Bhattacharyya, Pathikrit, Dunn, Casey W.
Format:	Online
Language:	English
Published:	John Wiley and Sons Inc. 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5032985/

id	pubmed-5032985
recordtype	oai_dc
spelling	pubmed-50329852016-10-03 The histology of Nanomia bijuga (Hydrozoa: Siphonophora) Church, Samuel H. Siebert, Stefan Bhattacharyya, Pathikrit Dunn, Casey W. Research Articles The siphonophore Nanomia bijuga is a pelagic hydrozoan (Cnidaria) with complex morphological organization. Each siphonophore is made up of many asexually produced, genetically identical zooids that are functionally specialized and morphologically distinct. These zooids predominantly arise by budding in two growth zones, and are arranged in precise patterns. This study describes the cellular anatomy of several zooid types, the stem, and the gas‐filled float, called the pneumatophore. The distribution of cellular morphologies across zooid types enhances our understanding of zooid function. The unique absorptive cells in the palpon, for example, indicate specialized intracellular digestive processing in this zooid type. Though cnidarians are usually thought of as mono‐epithelial, we characterize at least two cellular populations in this species which are not connected to a basement membrane. This work provides a greater understanding of epithelial diversity within the cnidarians, and will be a foundation for future studies on N. bijuga, including functional assays and gene expression analyses. J. Exp. Zool. (Mol. Dev. Evol.) 324B:435–449, 2015. © 2015 The Authors. Journal of Experimental Zoology Part B: Molecular and Developmental Evolution Published by Wiley Periodicals, Inc. John Wiley and Sons Inc. 2015-06-02 2015-07-15 /pmc/articles/PMC5032985/ /pubmed/26036693 http://dx.doi.org/10.1002/jez.b.22629 Text en © 2015 The Authors. Journal of Experimental Zoology Part B: Molecular and Developmental Evolution Published by Wiley Periodicals, Inc. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs (http://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Church, Samuel H. Siebert, Stefan Bhattacharyya, Pathikrit Dunn, Casey W.
spellingShingle	Church, Samuel H. Siebert, Stefan Bhattacharyya, Pathikrit Dunn, Casey W. The histology of Nanomia bijuga (Hydrozoa: Siphonophora)
author_facet	Church, Samuel H. Siebert, Stefan Bhattacharyya, Pathikrit Dunn, Casey W.
author_sort	Church, Samuel H.
title	The histology of Nanomia bijuga (Hydrozoa: Siphonophora)
title_short	The histology of Nanomia bijuga (Hydrozoa: Siphonophora)
title_full	The histology of Nanomia bijuga (Hydrozoa: Siphonophora)
title_fullStr	The histology of Nanomia bijuga (Hydrozoa: Siphonophora)
title_full_unstemmed	The histology of Nanomia bijuga (Hydrozoa: Siphonophora)
title_sort	histology of nanomia bijuga (hydrozoa: siphonophora)
description	The siphonophore Nanomia bijuga is a pelagic hydrozoan (Cnidaria) with complex morphological organization. Each siphonophore is made up of many asexually produced, genetically identical zooids that are functionally specialized and morphologically distinct. These zooids predominantly arise by budding in two growth zones, and are arranged in precise patterns. This study describes the cellular anatomy of several zooid types, the stem, and the gas‐filled float, called the pneumatophore. The distribution of cellular morphologies across zooid types enhances our understanding of zooid function. The unique absorptive cells in the palpon, for example, indicate specialized intracellular digestive processing in this zooid type. Though cnidarians are usually thought of as mono‐epithelial, we characterize at least two cellular populations in this species which are not connected to a basement membrane. This work provides a greater understanding of epithelial diversity within the cnidarians, and will be a foundation for future studies on N. bijuga, including functional assays and gene expression analyses. J. Exp. Zool. (Mol. Dev. Evol.) 324B:435–449, 2015. © 2015 The Authors. Journal of Experimental Zoology Part B: Molecular and Developmental Evolution Published by Wiley Periodicals, Inc.
publisher	John Wiley and Sons Inc.
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5032985/
_version_	1613658549582299136

The histology of Nanomia bijuga (Hydrozoa: Siphonophora)

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