Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches
This study aimed to compare the fertility of eggs between artificially matured female silver eels that spawned spontaneously and those that were spawned by manual stripping. The effects of the two methods of spawning on ovulation and fertilization rate were also investigated. For this purpose, 18 wi...
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ftunibolognairis:oai:cris.unibo.it:11585/520770 2024-09-15T17:39:35+00:00 Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches DI BIASE, ANDREA CASALINI, ANTONIO EMMANUELE, PIETRO MANDELLI, MICHAELA MORDENTI, OLIVIERO Lokman, Pieter Mark Di Biase, Andrea Casalini, Antonio Emmanuele, Pietro Mandelli, Michaela Lokman, Pieter Mark Mordenti, Oliviero 2016 ELETTRONICO http://hdl.handle.net/11585/520770 https://doi.org/10.1111/are.12755 http://www3.interscience.wiley.com/journal/118545114/toc eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000383348700003 volume:47 issue:10 firstpage:3052 lastpage:3060 numberofpages:9 journal:AQUACULTURE RESEARCH http://hdl.handle.net/11585/520770 doi:10.1111/are.12755 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927139119 http://www3.interscience.wiley.com/journal/118545114/toc Artificial reproduction Egg production Egg quality European eel (Anguilla anguilla) Aquatic Science info:eu-repo/semantics/article 2016 ftunibolognairis https://doi.org/10.1111/are.12755 2024-07-01T14:08:30Z This study aimed to compare the fertility of eggs between artificially matured female silver eels that spawned spontaneously and those that were spawned by manual stripping. The effects of the two methods of spawning on ovulation and fertilization rate were also investigated. For this purpose, 18 wild female European els captured in Bonello lagoon (North Adriatic Sea) were carp pituitary extract-injected to undergo sexual maturation and ovulation; a final injection of 17,20b-dihydroxy-4-pregnen-3-one (DHP) was administered when at least 30% of the oocytes were fully transparent. After the DHP-injection, nine eels were transferred to a new closed recirculating aquaculture system, where they were housed with spermiating males (sex ratio 4/1) to allow spontaneous spawning (SPT-group); the remaining nine eels were transferred to a 250 L tank and ovulation was checked at four-hourly intervals by manual stripping (STR-group). The number of eggs per female in the SPT-group was significantly greater than that in the STRgroup. Furthermore, fertilization rates in the SPT-group were notably higher than those observed in the STR-group. Significantly, the best performances were obtained among eels in which at least 50% of oocytes were fully transparent at the time DHP was administered. We conclude that the fertility of eggs from spontaneously spawning eels is superior to that of eggs acquired by strip-spawning and artificial fertilization. Article in Journal/Newspaper Anguilla anguilla IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Aquaculture Research 47 10 3052 3060 |
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Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
Artificial reproduction Egg production Egg quality European eel (Anguilla anguilla) Aquatic Science |
spellingShingle |
Artificial reproduction Egg production Egg quality European eel (Anguilla anguilla) Aquatic Science DI BIASE, ANDREA CASALINI, ANTONIO EMMANUELE, PIETRO MANDELLI, MICHAELA MORDENTI, OLIVIERO Lokman, Pieter Mark Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches |
topic_facet |
Artificial reproduction Egg production Egg quality European eel (Anguilla anguilla) Aquatic Science |
description |
This study aimed to compare the fertility of eggs between artificially matured female silver eels that spawned spontaneously and those that were spawned by manual stripping. The effects of the two methods of spawning on ovulation and fertilization rate were also investigated. For this purpose, 18 wild female European els captured in Bonello lagoon (North Adriatic Sea) were carp pituitary extract-injected to undergo sexual maturation and ovulation; a final injection of 17,20b-dihydroxy-4-pregnen-3-one (DHP) was administered when at least 30% of the oocytes were fully transparent. After the DHP-injection, nine eels were transferred to a new closed recirculating aquaculture system, where they were housed with spermiating males (sex ratio 4/1) to allow spontaneous spawning (SPT-group); the remaining nine eels were transferred to a 250 L tank and ovulation was checked at four-hourly intervals by manual stripping (STR-group). The number of eggs per female in the SPT-group was significantly greater than that in the STRgroup. Furthermore, fertilization rates in the SPT-group were notably higher than those observed in the STR-group. Significantly, the best performances were obtained among eels in which at least 50% of oocytes were fully transparent at the time DHP was administered. We conclude that the fertility of eggs from spontaneously spawning eels is superior to that of eggs acquired by strip-spawning and artificial fertilization. |
author2 |
Di Biase, Andrea Casalini, Antonio Emmanuele, Pietro Mandelli, Michaela Lokman, Pieter Mark Mordenti, Oliviero |
format |
Article in Journal/Newspaper |
author |
DI BIASE, ANDREA CASALINI, ANTONIO EMMANUELE, PIETRO MANDELLI, MICHAELA MORDENTI, OLIVIERO Lokman, Pieter Mark |
author_facet |
DI BIASE, ANDREA CASALINI, ANTONIO EMMANUELE, PIETRO MANDELLI, MICHAELA MORDENTI, OLIVIERO Lokman, Pieter Mark |
author_sort |
DI BIASE, ANDREA |
title |
Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches |
title_short |
Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches |
title_full |
Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches |
title_fullStr |
Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches |
title_full_unstemmed |
Controlled reproduction in Anguilla anguilla (L.): comparison between spontaneous spawning and stripping-insemination approaches |
title_sort |
controlled reproduction in anguilla anguilla (l.): comparison between spontaneous spawning and stripping-insemination approaches |
publishDate |
2016 |
url |
http://hdl.handle.net/11585/520770 https://doi.org/10.1111/are.12755 http://www3.interscience.wiley.com/journal/118545114/toc |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000383348700003 volume:47 issue:10 firstpage:3052 lastpage:3060 numberofpages:9 journal:AQUACULTURE RESEARCH http://hdl.handle.net/11585/520770 doi:10.1111/are.12755 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927139119 http://www3.interscience.wiley.com/journal/118545114/toc |
op_doi |
https://doi.org/10.1111/are.12755 |
container_title |
Aquaculture Research |
container_volume |
47 |
container_issue |
10 |
container_start_page |
3052 |
op_container_end_page |
3060 |
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1810481020807413760 |