Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light
Sexual maturity was induced in wild silver eel females of the European eel (Anguilla anguilla) using a protocol similar to that successfully used for Anguilla japonica. Eels were injected for sixteen weeks with increasing doses of carp pituitary extract (10, 20, 30, and 40 mg CPE/kg body wt) and kep...
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ftunibolognairis:oai:cris.unibo.it:11585/963762 2024-04-14T08:00:57+00:00 Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light Mordenti O. Di Biase A. Sirri R. Modugno S. Tasselli A. Mordenti O. Di Biase A. Sirri R. Modugno S. Tasselli A. 2012 ELETTRONICO https://hdl.handle.net/11585/963762 eng eng volume:64 firstpage:726 lastpage:734 numberofpages:9 journal:ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH https://hdl.handle.net/11585/963762 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84894349092 Artificial maturation Eggs production European eel (Anguilla anguilla) Gonad development Photoperiod info:eu-repo/semantics/article 2012 ftunibolognairis 2024-03-21T17:01:49Z Sexual maturity was induced in wild silver eel females of the European eel (Anguilla anguilla) using a protocol similar to that successfully used for Anguilla japonica. Eels were injected for sixteen weeks with increasing doses of carp pituitary extract (10, 20, 30, and 40 mg CPE/kg body wt) and kept in natural light or completely dark conditions. In both groups, final oocyte maturation and ovulation were induced by injection of 17,20 h-dihydroxy-4-pregnen-3-one (DHP) at 2 mg/g body wt. All sixty eels turned out to be silver and actively migrant (58 in stage V and two in stage IV), showing a particularly high eye index (15.75±1.40), and distributed within three age classes (7-9 years). In the group kept in darkness, one of the four females ovulated 12 h after DHP injection in the thirteenth week. The remaining three females received the final (16th) CPE injection and ovulated 12-36 h after the DHP injection. In the group kept in light, two of the four females received the 16th CPE injection and ovulated 12-36 h after the DHP injection; the remaining two did not ovulate within 36 h post DHP injection. The total number of eggs released by the group kept in darkness (1,485,600) was significantly higher than that of the group kept in light (274,000). There was no mortality during the experiment. Article in Journal/Newspaper Anguilla anguilla IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
Artificial maturation Eggs production European eel (Anguilla anguilla) Gonad development Photoperiod |
spellingShingle |
Artificial maturation Eggs production European eel (Anguilla anguilla) Gonad development Photoperiod Mordenti O. Di Biase A. Sirri R. Modugno S. Tasselli A. Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light |
topic_facet |
Artificial maturation Eggs production European eel (Anguilla anguilla) Gonad development Photoperiod |
description |
Sexual maturity was induced in wild silver eel females of the European eel (Anguilla anguilla) using a protocol similar to that successfully used for Anguilla japonica. Eels were injected for sixteen weeks with increasing doses of carp pituitary extract (10, 20, 30, and 40 mg CPE/kg body wt) and kept in natural light or completely dark conditions. In both groups, final oocyte maturation and ovulation were induced by injection of 17,20 h-dihydroxy-4-pregnen-3-one (DHP) at 2 mg/g body wt. All sixty eels turned out to be silver and actively migrant (58 in stage V and two in stage IV), showing a particularly high eye index (15.75±1.40), and distributed within three age classes (7-9 years). In the group kept in darkness, one of the four females ovulated 12 h after DHP injection in the thirteenth week. The remaining three females received the final (16th) CPE injection and ovulated 12-36 h after the DHP injection. In the group kept in light, two of the four females received the 16th CPE injection and ovulated 12-36 h after the DHP injection; the remaining two did not ovulate within 36 h post DHP injection. The total number of eggs released by the group kept in darkness (1,485,600) was significantly higher than that of the group kept in light (274,000). There was no mortality during the experiment. |
author2 |
Mordenti O. Di Biase A. Sirri R. Modugno S. Tasselli A. |
format |
Article in Journal/Newspaper |
author |
Mordenti O. Di Biase A. Sirri R. Modugno S. Tasselli A. |
author_facet |
Mordenti O. Di Biase A. Sirri R. Modugno S. Tasselli A. |
author_sort |
Mordenti O. |
title |
Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light |
title_short |
Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light |
title_full |
Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light |
title_fullStr |
Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light |
title_full_unstemmed |
Induction of sexual maturation in wild female European eels (Anguilla anguilla) in darkness and light |
title_sort |
induction of sexual maturation in wild female european eels (anguilla anguilla) in darkness and light |
publishDate |
2012 |
url |
https://hdl.handle.net/11585/963762 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
volume:64 firstpage:726 lastpage:734 numberofpages:9 journal:ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH https://hdl.handle.net/11585/963762 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84894349092 |
_version_ |
1796305632952844288 |