Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water
The ultrastructure of the gill primary lamellae of juvenile Atlantic salmon was examined during the parr‐smolt transformation and for 42 days after smolts were exposed to sea water. Scanning electron microscopy indicated that primary lamellae were characterized by rough convoluted surfaces that beca...
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crwiley:10.1111/j.1095-8649.1989.tb03307.x 2024-06-02T08:03:37+00:00 Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water Lubin, R. T. Rourke, A. W. Bradley, T. M. 1989 http://dx.doi.org/10.1111/j.1095-8649.1989.tb03307.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1989.tb03307.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1989.tb03307.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 34, issue 2, page 259-272 ISSN 0022-1112 1095-8649 journal-article 1989 crwiley https://doi.org/10.1111/j.1095-8649.1989.tb03307.x 2024-05-03T12:06:22Z The ultrastructure of the gill primary lamellae of juvenile Atlantic salmon was examined during the parr‐smolt transformation and for 42 days after smolts were exposed to sea water. Scanning electron microscopy indicated that primary lamellae were characterized by rough convoluted surfaces that became rougher throughout the experimental period and that crypts did begin to form in freshwater fish. Crypt formation increased in sea water. Transmission electron microscopy indicated that parr preadapt for life in sea water in part by changes in chloride cells. Chloride cells show an elaboration of rough endoplasmic reticulum in fresh water and a decline of rough endoplasmic reticulum after 42 days of sea water exposure. The tubular membrane system becomes well developed in fresh water, and apical vesicles become abundant only after seawater exposure. Mitochondria are both spherical and elongate through the period and contain well developed cristae. No evidence of mitochondrial rupture was observed. The junctions between chloride cells and adjacent cells were characterized in fresh water by long tight junctions with desmosomes. This type of junction continued in sea water and was the norm between chloride cells and accessory cells after 42 days of seawater exposure. While leaky junctions appeared to be forming, no evidence was found of membrane interdigitation between accessory cells and chloride cells after 42 days of seawater exposure. It also appeared that seawater exposure influenced the number of chloride cells exposed to the external milieu. Pavement cells showed an elaboration in fresh water of free ribosomes and rough endoplasmic reticulum and these elements became less prominent after seawater exposure. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 34 2 259 272 |
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Wiley Online Library |
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English |
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The ultrastructure of the gill primary lamellae of juvenile Atlantic salmon was examined during the parr‐smolt transformation and for 42 days after smolts were exposed to sea water. Scanning electron microscopy indicated that primary lamellae were characterized by rough convoluted surfaces that became rougher throughout the experimental period and that crypts did begin to form in freshwater fish. Crypt formation increased in sea water. Transmission electron microscopy indicated that parr preadapt for life in sea water in part by changes in chloride cells. Chloride cells show an elaboration of rough endoplasmic reticulum in fresh water and a decline of rough endoplasmic reticulum after 42 days of sea water exposure. The tubular membrane system becomes well developed in fresh water, and apical vesicles become abundant only after seawater exposure. Mitochondria are both spherical and elongate through the period and contain well developed cristae. No evidence of mitochondrial rupture was observed. The junctions between chloride cells and adjacent cells were characterized in fresh water by long tight junctions with desmosomes. This type of junction continued in sea water and was the norm between chloride cells and accessory cells after 42 days of seawater exposure. While leaky junctions appeared to be forming, no evidence was found of membrane interdigitation between accessory cells and chloride cells after 42 days of seawater exposure. It also appeared that seawater exposure influenced the number of chloride cells exposed to the external milieu. Pavement cells showed an elaboration in fresh water of free ribosomes and rough endoplasmic reticulum and these elements became less prominent after seawater exposure. |
format |
Article in Journal/Newspaper |
author |
Lubin, R. T. Rourke, A. W. Bradley, T. M. |
spellingShingle |
Lubin, R. T. Rourke, A. W. Bradley, T. M. Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water |
author_facet |
Lubin, R. T. Rourke, A. W. Bradley, T. M. |
author_sort |
Lubin, R. T. |
title |
Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water |
title_short |
Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water |
title_full |
Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water |
title_fullStr |
Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water |
title_full_unstemmed |
Ultrastructural alterations in branchial chloride cells of Atlantic salmon, Salmo salar, during parr‐smolt transformation and early development in sea water |
title_sort |
ultrastructural alterations in branchial chloride cells of atlantic salmon, salmo salar, during parr‐smolt transformation and early development in sea water |
publisher |
Wiley |
publishDate |
1989 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1989.tb03307.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1989.tb03307.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1989.tb03307.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 34, issue 2, page 259-272 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1989.tb03307.x |
container_title |
Journal of Fish Biology |
container_volume |
34 |
container_issue |
2 |
container_start_page |
259 |
op_container_end_page |
272 |
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1800748189860495360 |