Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs
ACT: Atlantic halibut Hippoglossus hippoglossus (L.) eggs were sampled using a Tucker trawl and a MOCNESS-sampler at 3 selected localities in North Norway. The specific density of the eggs was determined in a density-gradient column. The eggs were found to achieve higher specific density with increa...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter Research
1986
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/108633 https://doi.org/10.3354/meps033207 |
id |
ftimr:oai:imr.brage.unit.no:11250/108633 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/108633 2023-05-15T17:10:03+02:00 Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs Haug, Tore Kjørsvik, Elin Solemdal, Per 1986-10-27 661896 bytes application/pdf http://hdl.handle.net/11250/108633 https://doi.org/10.3354/meps033207 eng eng Inter Research urn:issn:0171-8630 http://hdl.handle.net/11250/108633 http://dx.doi.org/10.3354/meps033207 207-216 33 Marine Ecology Progress Series kveite halibut Journal article Peer reviewed 1986 ftimr https://doi.org/10.3354/meps033207 2021-09-23T20:15:48Z ACT: Atlantic halibut Hippoglossus hippoglossus (L.) eggs were sampled using a Tucker trawl and a MOCNESS-sampler at 3 selected localities in North Norway. The specific density of the eggs was determined in a density-gradient column. The eggs were found to achieve higher specific density with increasing age. In areas with a horizontally stable, clearly defined pycnocline (Andfjord and Seraysund), the vertical distribution of eggs was characterized by a unimodal egg distribution. Furthermore, the older eggs were found at higher average capture salinities than younger eggs, i.e. they were distributed in relation to their neutral buoyancy. In an area with a horizontally more variable and less defined pycnocline (Malangen), the pattern of vertical distribution of eggs was less distinct, often with polymodal egg distributions. In this hydrographically variable system, no heterogeneity in the distribution of the various egg developmental stages could be discerned. In Malangen, thus, it is proposed that the vertical distribution of halibut eggs is most strongly influenced by physical factors. Article in Journal/Newspaper Malangen North Norway Institute for Marine Research: Brage IMR Malangen ENVELOPE(18.598,18.598,69.400,69.400) Norway Marine Ecology Progress Series 33 207 216 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
kveite halibut |
spellingShingle |
kveite halibut Haug, Tore Kjørsvik, Elin Solemdal, Per Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs |
topic_facet |
kveite halibut |
description |
ACT: Atlantic halibut Hippoglossus hippoglossus (L.) eggs were sampled using a Tucker trawl and a MOCNESS-sampler at 3 selected localities in North Norway. The specific density of the eggs was determined in a density-gradient column. The eggs were found to achieve higher specific density with increasing age. In areas with a horizontally stable, clearly defined pycnocline (Andfjord and Seraysund), the vertical distribution of eggs was characterized by a unimodal egg distribution. Furthermore, the older eggs were found at higher average capture salinities than younger eggs, i.e. they were distributed in relation to their neutral buoyancy. In an area with a horizontally more variable and less defined pycnocline (Malangen), the pattern of vertical distribution of eggs was less distinct, often with polymodal egg distributions. In this hydrographically variable system, no heterogeneity in the distribution of the various egg developmental stages could be discerned. In Malangen, thus, it is proposed that the vertical distribution of halibut eggs is most strongly influenced by physical factors. |
format |
Article in Journal/Newspaper |
author |
Haug, Tore Kjørsvik, Elin Solemdal, Per |
author_facet |
Haug, Tore Kjørsvik, Elin Solemdal, Per |
author_sort |
Haug, Tore |
title |
Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs |
title_short |
Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs |
title_full |
Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs |
title_fullStr |
Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs |
title_full_unstemmed |
Influence of some physical and biological factors on the density and vertical distribution of Atlantic halibut Hippoglossus hippoglossus eggs |
title_sort |
influence of some physical and biological factors on the density and vertical distribution of atlantic halibut hippoglossus hippoglossus eggs |
publisher |
Inter Research |
publishDate |
1986 |
url |
http://hdl.handle.net/11250/108633 https://doi.org/10.3354/meps033207 |
long_lat |
ENVELOPE(18.598,18.598,69.400,69.400) |
geographic |
Malangen Norway |
geographic_facet |
Malangen Norway |
genre |
Malangen North Norway |
genre_facet |
Malangen North Norway |
op_source |
207-216 33 Marine Ecology Progress Series |
op_relation |
urn:issn:0171-8630 http://hdl.handle.net/11250/108633 http://dx.doi.org/10.3354/meps033207 |
op_doi |
https://doi.org/10.3354/meps033207 |
container_title |
Marine Ecology Progress Series |
container_volume |
33 |
container_start_page |
207 |
op_container_end_page |
216 |
_version_ |
1766066469804703744 |