Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla
Improper activation and swelling of in vitro produced eggs of European eel, Anguilla anguilla, has been shown to negatively affect embryonic development and hatching. We investigated this phenomenon by examining the effects of salinity and sea salt type on egg dimensions, cell cleavage patterns and...
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2016
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Online Access: | https://orbit.dtu.dk/en/publications/07faa894-dbfb-42bb-96f2-26b3d16f6faf https://doi.org/10.1017/S0967199414000811 |
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ftdtupubl:oai:pure.atira.dk:publications/07faa894-dbfb-42bb-96f2-26b3d16f6faf 2024-05-19T07:28:29+00:00 Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla Sørensen, Sune Riis Butts, Ian Munk, Peter Tomkiewicz, Jonna 2016 https://orbit.dtu.dk/en/publications/07faa894-dbfb-42bb-96f2-26b3d16f6faf https://doi.org/10.1017/S0967199414000811 eng eng https://orbit.dtu.dk/en/publications/07faa894-dbfb-42bb-96f2-26b3d16f6faf info:eu-repo/semantics/closedAccess Sørensen , S R , Butts , I , Munk , P & Tomkiewicz , J 2016 , ' Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla ' , Zygote , vol. 24 , no. 1 , pp. 121-138 . https://doi.org/10.1017/S0967199414000811 article 2016 ftdtupubl https://doi.org/10.1017/S0967199414000811 2024-05-01T00:21:07Z Improper activation and swelling of in vitro produced eggs of European eel, Anguilla anguilla, has been shown to negatively affect embryonic development and hatching. We investigated this phenomenon by examining the effects of salinity and sea salt type on egg dimensions, cell cleavage patterns and egg buoyancy. Egg diameter after activation, using natural seawater adjusted to different salinities, varied among female eels, but no consistent pattern emerged. Activation salinities between 30–40 practical salinity unit (psu) produced higher quality eggs and generally larger egg diameters. Chorion diameters reached maximal values of 1642 ± 8 μm at 35 psu. A positive relationship was found between egg neutral buoyancy and activation salinity. Nine salt types were investigated as activation and incubation media. Five of these types induced a substantial perivitelline space (PVS), leading to large egg sizes, while the remaining four salt types resulted in smaller eggs. All salt types except NaCl treatments led to high fertilization rates and had no effect on fertilization success as well as egg neutral buoyancies at 7 h post-fertilization. The study points to the importance of considering ionic composition of the media when rearing fish eggs and further studies are encouraged Article in Journal/Newspaper Anguilla anguilla Technical University of Denmark: DTU Orbit Zygote 24 1 121 138 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
description |
Improper activation and swelling of in vitro produced eggs of European eel, Anguilla anguilla, has been shown to negatively affect embryonic development and hatching. We investigated this phenomenon by examining the effects of salinity and sea salt type on egg dimensions, cell cleavage patterns and egg buoyancy. Egg diameter after activation, using natural seawater adjusted to different salinities, varied among female eels, but no consistent pattern emerged. Activation salinities between 30–40 practical salinity unit (psu) produced higher quality eggs and generally larger egg diameters. Chorion diameters reached maximal values of 1642 ± 8 μm at 35 psu. A positive relationship was found between egg neutral buoyancy and activation salinity. Nine salt types were investigated as activation and incubation media. Five of these types induced a substantial perivitelline space (PVS), leading to large egg sizes, while the remaining four salt types resulted in smaller eggs. All salt types except NaCl treatments led to high fertilization rates and had no effect on fertilization success as well as egg neutral buoyancies at 7 h post-fertilization. The study points to the importance of considering ionic composition of the media when rearing fish eggs and further studies are encouraged |
format |
Article in Journal/Newspaper |
author |
Sørensen, Sune Riis Butts, Ian Munk, Peter Tomkiewicz, Jonna |
spellingShingle |
Sørensen, Sune Riis Butts, Ian Munk, Peter Tomkiewicz, Jonna Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla |
author_facet |
Sørensen, Sune Riis Butts, Ian Munk, Peter Tomkiewicz, Jonna |
author_sort |
Sørensen, Sune Riis |
title |
Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla |
title_short |
Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla |
title_full |
Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla |
title_fullStr |
Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla |
title_full_unstemmed |
Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla |
title_sort |
effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of european eel, anguilla anguilla |
publishDate |
2016 |
url |
https://orbit.dtu.dk/en/publications/07faa894-dbfb-42bb-96f2-26b3d16f6faf https://doi.org/10.1017/S0967199414000811 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Sørensen , S R , Butts , I , Munk , P & Tomkiewicz , J 2016 , ' Effects of salinity and sea salt type on egg activation, fertilization, buoyancy and early embryology of European eel, Anguilla anguilla ' , Zygote , vol. 24 , no. 1 , pp. 121-138 . https://doi.org/10.1017/S0967199414000811 |
op_relation |
https://orbit.dtu.dk/en/publications/07faa894-dbfb-42bb-96f2-26b3d16f6faf |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1017/S0967199414000811 |
container_title |
Zygote |
container_volume |
24 |
container_issue |
1 |
container_start_page |
121 |
op_container_end_page |
138 |
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1799473616004317184 |