Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 566752
Title Lymphoid tissue in teleost gills : Variations on a theme
Author(s) Rességuier, Julien; Dalum, Alf S.; Pasquier, Louis Du; Zhang, Yaqing; Koppang, Erling Olaf; Boudinot, Pierre; Wiegertjes, Geert F.
Source Biology - open access biological sciences journal 9 (2020)6. - ISSN 2079-7737 - p. 1 - 14.
DOI https://doi.org/10.3390/biology9060127
Department(s) Aquaculture and Fisheries
WIAS
Cell Biology and Immunology
Publication type Refereed Article in a scientific journal
Publication year 2020
Keyword(s) Evolution - Fish - Gills - Ilt - Zap70
Abstract

In bony fish, the gill filaments are essential for gas exchanges, but also are vulnerable to infection by water‐borne microorganisms. Omnipresent across fish, gill‐associated lymphoid tissues (GIALT) regulate interactions with local microbiota and halt infection by pathogens. A special GIALT structure has recently been found in Salmonids, the interbranchial lymphoid tissue (ILT). However, the structural variation of GIALT across bony fish remains largely unknown. Here, we show how this critical zone of interaction evolved across fishes. By labeling a conserved T‐cell epitope on tissue sections, we find that several basal groups of teleosts possess typical ILT, while modern teleosts have lymphoepithelium of different shape and size at the base of primary gill filaments. Within Cypriniformes, neither body size variation between two related species, zebrafish and common carp, nor morphotype variation, did have a drastic effect on the structure of ILT. Thereby this study is the first to describe the presence of ILT in zebrafish. The ILT variability across fish orders seems to represent different evolutionary solutions to balancing trade‐offs between multiple adaptations of jaws and pharyngeal region, and immune responses. Our data point to a wide structural variation in gill immunity between basal groups and modern teleosts.

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