Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.)
The work demonstrates, for the first time, natural biological changes in fish during maturing processes using a unique combination of different biochemical techniques. Northeast Arctic cod caught by demersal trawls were studied in three Barents Sea areas during February–March 2008. Older larger cod...
Published in: | The Open Fish Science Journal |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2581336 https://doi.org/10.2174/1874401X01205010044 |
id |
ftimr:oai:imr.brage.unit.no:11250/2581336 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/2581336 2023-05-15T14:30:23+02:00 Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) Rungruangsak-Torrissen, Krisna Thongprajukaew, Karun Sansuwan, Kanokwan Thapthimdaeng, Passara Kovitvadhi, Uthaiwan Seetaha, Supaporn Choowongkomon, Kiattawee Beck, Inger Marie Arnøy, Ole Oskar 2012 application/pdf http://hdl.handle.net/11250/2581336 https://doi.org/10.2174/1874401X01205010044 eng eng http://benthamopen.com/ABSTRACT/TOFISHSJ-5-44 The Open Fish Science Journal. 2012, 5 44-56. urn:issn:1874-401X http://hdl.handle.net/11250/2581336 https://doi.org/10.2174/1874401X01205010044 cristin:916966 44-56 5 The Open Fish Science Journal Journal article 2012 ftimr https://doi.org/10.2174/1874401X01205010044 2021-09-23T20:14:36Z The work demonstrates, for the first time, natural biological changes in fish during maturing processes using a unique combination of different biochemical techniques. Northeast Arctic cod caught by demersal trawls were studied in three Barents Sea areas during February–March 2008. Older larger cod from area A (between North Kanin Bank and Eastern Basin) had higher food utilization efficiency (with females showing highest white muscle protein synthesis capacity) than those from areas B (Kanin Bank) and C (Central Bank). Populations in areas A and C living in separate environments showed parallel regressions of pyloric caecal slope T/C ratio, with different elevations of trypsin specific activities and trypsin isozymes expressions. Approximately 30 trypsin isozymes were observed, with 13 isozymes of possibly exogenous trypsin isozyme fragments from prey items found at higher percentage of cod in areas A and B with higher food varieties. Larger maturing cod required higher energy from carbohydrate (probably phytoplankton), as amylase specific activity correlated with body weight. White muscle RNA levels were varied among females from different areas, but not among males. RNA and RNA/protein ratio levels were higher in oocytes than white muscle, and these levels decreased in higher developed oocytes. Oocyte trypsin-like specific activity in areas B < A < C (with oocyte T/C ratio in areas B > A > C) illustrated that females from area B (youngest with lowest oocyte protein turnover) had highest maturation rate, and would reach their spawning area(s) before those from areas A and C. Younger females (probably also males) living closer to coastal area with higher temperature and food varieties would reach sexual maturity faster than older cod and those living far from coastal area. Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) publishedVersion Article in Journal/Newspaper Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod Phytoplankton Institute for Marine Research: Brage IMR Arctic Barents Sea Kanin Bank ENVELOPE(41.750,41.750,69.467,69.467) The Open Fish Science Journal 5 1 44 56 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The work demonstrates, for the first time, natural biological changes in fish during maturing processes using a unique combination of different biochemical techniques. Northeast Arctic cod caught by demersal trawls were studied in three Barents Sea areas during February–March 2008. Older larger cod from area A (between North Kanin Bank and Eastern Basin) had higher food utilization efficiency (with females showing highest white muscle protein synthesis capacity) than those from areas B (Kanin Bank) and C (Central Bank). Populations in areas A and C living in separate environments showed parallel regressions of pyloric caecal slope T/C ratio, with different elevations of trypsin specific activities and trypsin isozymes expressions. Approximately 30 trypsin isozymes were observed, with 13 isozymes of possibly exogenous trypsin isozyme fragments from prey items found at higher percentage of cod in areas A and B with higher food varieties. Larger maturing cod required higher energy from carbohydrate (probably phytoplankton), as amylase specific activity correlated with body weight. White muscle RNA levels were varied among females from different areas, but not among males. RNA and RNA/protein ratio levels were higher in oocytes than white muscle, and these levels decreased in higher developed oocytes. Oocyte trypsin-like specific activity in areas B < A < C (with oocyte T/C ratio in areas B > A > C) illustrated that females from area B (youngest with lowest oocyte protein turnover) had highest maturation rate, and would reach their spawning area(s) before those from areas A and C. Younger females (probably also males) living closer to coastal area with higher temperature and food varieties would reach sexual maturity faster than older cod and those living far from coastal area. Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) publishedVersion |
format |
Article in Journal/Newspaper |
author |
Rungruangsak-Torrissen, Krisna Thongprajukaew, Karun Sansuwan, Kanokwan Thapthimdaeng, Passara Kovitvadhi, Uthaiwan Seetaha, Supaporn Choowongkomon, Kiattawee Beck, Inger Marie Arnøy, Ole Oskar |
spellingShingle |
Rungruangsak-Torrissen, Krisna Thongprajukaew, Karun Sansuwan, Kanokwan Thapthimdaeng, Passara Kovitvadhi, Uthaiwan Seetaha, Supaporn Choowongkomon, Kiattawee Beck, Inger Marie Arnøy, Ole Oskar Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) |
author_facet |
Rungruangsak-Torrissen, Krisna Thongprajukaew, Karun Sansuwan, Kanokwan Thapthimdaeng, Passara Kovitvadhi, Uthaiwan Seetaha, Supaporn Choowongkomon, Kiattawee Beck, Inger Marie Arnøy, Ole Oskar |
author_sort |
Rungruangsak-Torrissen, Krisna |
title |
Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) |
title_short |
Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) |
title_full |
Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) |
title_fullStr |
Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) |
title_full_unstemmed |
Ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in Northeast Arctic cod (Gadus morhua L.) |
title_sort |
ecological effects on food utilization, trypsin isozymes, and performance qualities of growth and maturation in northeast arctic cod (gadus morhua l.) |
publishDate |
2012 |
url |
http://hdl.handle.net/11250/2581336 https://doi.org/10.2174/1874401X01205010044 |
long_lat |
ENVELOPE(41.750,41.750,69.467,69.467) |
geographic |
Arctic Barents Sea Kanin Bank |
geographic_facet |
Arctic Barents Sea Kanin Bank |
genre |
Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod Phytoplankton |
genre_facet |
Arctic cod Arctic Barents Sea Gadus morhua Northeast Arctic cod Phytoplankton |
op_source |
44-56 5 The Open Fish Science Journal |
op_relation |
http://benthamopen.com/ABSTRACT/TOFISHSJ-5-44 The Open Fish Science Journal. 2012, 5 44-56. urn:issn:1874-401X http://hdl.handle.net/11250/2581336 https://doi.org/10.2174/1874401X01205010044 cristin:916966 |
op_doi |
https://doi.org/10.2174/1874401X01205010044 |
container_title |
The Open Fish Science Journal |
container_volume |
5 |
container_issue |
1 |
container_start_page |
44 |
op_container_end_page |
56 |
_version_ |
1766304235267293184 |