Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.)
Muscle cellularity was investigated in alevins from five families of Atlantic salmon (Salmo salar L.) reared at variable ambient temperatures averaging 4.3 °C and in water heated to ca. 8 °C. At hatch, fish reared at 8 °C had fewer muscle fibres and myonuclei per myotome and lower mean fibre cross-s...
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1997
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crcansciencepubl:10.1139/z97-008 2024-04-28T08:13:27+00:00 Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) Johnston, Ian A. McLay, H. Anne 1997 http://dx.doi.org/10.1139/z97-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/z97-008 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 75, issue 1, page 64-74 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1997 crcansciencepubl https://doi.org/10.1139/z97-008 2024-04-02T06:55:54Z Muscle cellularity was investigated in alevins from five families of Atlantic salmon (Salmo salar L.) reared at variable ambient temperatures averaging 4.3 °C and in water heated to ca. 8 °C. At hatch, fish reared at 8 °C had fewer muscle fibres and myonuclei per myotome and lower mean fibre cross-sectional areas than fish reared at ambient temperature. The total cross-sectional area of white muscle was 40% less in the group reared at 8 °C than in the group reared at ambient temperature. Muscle cellularity and response to temperature varied among families and there was evidence of interactions with temperature and developmental stage. The number of red and white muscle fibres approximately doubled between hatch and first feeding. At hatch, red muscle fibres stained with an antibody to fast myosin light chains, but expression was gradually switched off as development proceeded. Following hatch, alevins reared at 8 °C were more effective in translating yolk into muscle than those reared at ambient temperature, so towards the end of yolk resorption there were no significant differences in fibre number or cross-sectional area. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Zoology 75 1 64 74 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Johnston, Ian A. McLay, H. Anne Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Muscle cellularity was investigated in alevins from five families of Atlantic salmon (Salmo salar L.) reared at variable ambient temperatures averaging 4.3 °C and in water heated to ca. 8 °C. At hatch, fish reared at 8 °C had fewer muscle fibres and myonuclei per myotome and lower mean fibre cross-sectional areas than fish reared at ambient temperature. The total cross-sectional area of white muscle was 40% less in the group reared at 8 °C than in the group reared at ambient temperature. Muscle cellularity and response to temperature varied among families and there was evidence of interactions with temperature and developmental stage. The number of red and white muscle fibres approximately doubled between hatch and first feeding. At hatch, red muscle fibres stained with an antibody to fast myosin light chains, but expression was gradually switched off as development proceeded. Following hatch, alevins reared at 8 °C were more effective in translating yolk into muscle than those reared at ambient temperature, so towards the end of yolk resorption there were no significant differences in fibre number or cross-sectional area. |
format |
Article in Journal/Newspaper |
author |
Johnston, Ian A. McLay, H. Anne |
author_facet |
Johnston, Ian A. McLay, H. Anne |
author_sort |
Johnston, Ian A. |
title |
Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) |
title_short |
Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) |
title_full |
Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) |
title_fullStr |
Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) |
title_full_unstemmed |
Temperature and family effects on muscle cellularity at hatch and first feeding in Atlantic salmon ( Salmo salar L.) |
title_sort |
temperature and family effects on muscle cellularity at hatch and first feeding in atlantic salmon ( salmo salar l.) |
publisher |
Canadian Science Publishing |
publishDate |
1997 |
url |
http://dx.doi.org/10.1139/z97-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/z97-008 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Zoology volume 75, issue 1, page 64-74 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z97-008 |
container_title |
Canadian Journal of Zoology |
container_volume |
75 |
container_issue |
1 |
container_start_page |
64 |
op_container_end_page |
74 |
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1797579945850961920 |