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Embryonic and aglomerular kidney development in the bay pipefish, Syngnathus leptorhynchus

Bianca R. Maters, Emily Stevenson, View ORCID ProfilePeter D. Vize
doi: https://doi.org/10.1101/2021.08.17.456591
Bianca R. Maters
Department of Biological Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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Emily Stevenson
Department of Biological Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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Peter D. Vize
Department of Biological Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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  • ORCID record for Peter D. Vize
  • For correspondence: pvize@ucalgary.ca
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Abstract

In this report we describe the embryogenesis of the bay pipefish, Syngnathus leptorhynchus, and the organogenesis of its aglomerular kidney. Early development was analyzed via a series of montages and images documenting embryos collected from the brood pouches of pregnant males. Despite differences in terminal morphology between pipefish and common teleost models such as medaka and zebrafish, the embryogenesis of these highly advanced fishes is generally similar to that of other fishes. One of the unique features of these fishes is their utilization of an aglomerular kidney. Histological analysis revealed a single long, unbranched kidney tubule in late embryos. The development and structure of this organ was further investigated by cloning the sodium potassium ATPase alpha subunit, atp1a, from S. leptorhynchus and developing whole mount fluorescent in situ hybridization protocols for embryos of this species. Fluorescent stereoscopic and confocal visualization techniques were then used to characterize the 3D morphology of aglomerular kidneys in intact embryos. In all embryonic stages characterized, the aglomerular kidney is a single unbranched tube extending from just behind the head to the cloaca.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • phone: +61 401 300 965, fax: +1 403 289 9311, e-mail: pvize{at}ucalgary.ca, bianca.gardiner{at}cssd.ab.ca

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted August 17, 2021.
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Embryonic and aglomerular kidney development in the bay pipefish, Syngnathus leptorhynchus
Bianca R. Maters, Emily Stevenson, Peter D. Vize
bioRxiv 2021.08.17.456591; doi: https://doi.org/10.1101/2021.08.17.456591
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Embryonic and aglomerular kidney development in the bay pipefish, Syngnathus leptorhynchus
Bianca R. Maters, Emily Stevenson, Peter D. Vize
bioRxiv 2021.08.17.456591; doi: https://doi.org/10.1101/2021.08.17.456591

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