A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation
The objective of the present study was to obtain spontaneous reproduction in captivity of the European eel (Anguilla anguilla) by using a new closed recirculating aquaculture system provided with spawning and incubation chambers. The influence of two levels of water-flow rates (Low-Flow: 0.8 ± 0.05...
Published in: | Aquacultural Engineering |
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Online Access: | http://hdl.handle.net/11585/216867 https://doi.org/10.1016/j.aquaeng.2013.12.002 |
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ftunibolognairis:oai:cris.unibo.it:11585/216867 2024-09-15T17:39:33+00:00 A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation MORDENTI, OLIVIERO CASALINI, ANTONIO MANDELLI, MICHAELA DI BIASE, ANDREA O. Mordenti A. Casalini M. Mandelli A. Di Biase 2014 ELETTRONICO http://hdl.handle.net/11585/216867 https://doi.org/10.1016/j.aquaeng.2013.12.002 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000333000200011 volume:58 firstpage:88 lastpage:94 numberofpages:7 journal:AQUACULTURAL ENGINEERING http://hdl.handle.net/11585/216867 doi:10.1016/j.aquaeng.2013.12.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84893841832 EUROPEAN EEL (ANGUILLA ANGUILLA) TANK DESIGN FLOW RATE SPONTANEOUS REPRODUCTION EGG QUALITY info:eu-repo/semantics/article 2014 ftunibolognairis https://doi.org/10.1016/j.aquaeng.2013.12.002 2024-07-01T14:08:29Z The objective of the present study was to obtain spontaneous reproduction in captivity of the European eel (Anguilla anguilla) by using a new closed recirculating aquaculture system provided with spawning and incubation chambers. The influence of two levels of water-flow rates (Low-Flow: 0.8 ± 0.05 L/s and High-Flow: 2.4 ± 0.05 L/s) on the spawning, fecundity and egg quality was also investigated. For this purpose 12 silver eel females were induced with increasing doses of carp pituitary extract (10, 20, 30 and 40 mg CPE/kg BW). Twenty-four hours after the last CPE injection, each female ovulation was induced by injecting a DHP-solution and then transferring them to a new closed recirculating aquaculture system, where they were maintained for 16 h with spermiating males (sex ratio 4/1) in order to obtain spontaneous reproduction. The reproduction was tested with 6 females in Low-Flow rate conditions and 6 females in High-Flow rate conditions. The results showed that the designed closed-loop system made it possible to carry out a more spontaneous reproduction for more than 80% of the females that underwent standardized gonadotropic treatment and favored the automatic and complete transfer of the eggs to the hatchery. The results also point out that high or low water current conditions in the tank do not hinder the mating and the emission of gametes by the breeders, but the High-Flow rate in the two incubation chambers showed unsuitable hydrodynamic conditions for embryonic development resulting in a constant loss of viable eggs which reached a mortality of 100% among females with the highest incubation density. Article in Journal/Newspaper Anguilla anguilla IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Aquacultural Engineering 58 88 94 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
EUROPEAN EEL (ANGUILLA ANGUILLA) TANK DESIGN FLOW RATE SPONTANEOUS REPRODUCTION EGG QUALITY |
spellingShingle |
EUROPEAN EEL (ANGUILLA ANGUILLA) TANK DESIGN FLOW RATE SPONTANEOUS REPRODUCTION EGG QUALITY MORDENTI, OLIVIERO CASALINI, ANTONIO MANDELLI, MICHAELA DI BIASE, ANDREA A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
topic_facet |
EUROPEAN EEL (ANGUILLA ANGUILLA) TANK DESIGN FLOW RATE SPONTANEOUS REPRODUCTION EGG QUALITY |
description |
The objective of the present study was to obtain spontaneous reproduction in captivity of the European eel (Anguilla anguilla) by using a new closed recirculating aquaculture system provided with spawning and incubation chambers. The influence of two levels of water-flow rates (Low-Flow: 0.8 ± 0.05 L/s and High-Flow: 2.4 ± 0.05 L/s) on the spawning, fecundity and egg quality was also investigated. For this purpose 12 silver eel females were induced with increasing doses of carp pituitary extract (10, 20, 30 and 40 mg CPE/kg BW). Twenty-four hours after the last CPE injection, each female ovulation was induced by injecting a DHP-solution and then transferring them to a new closed recirculating aquaculture system, where they were maintained for 16 h with spermiating males (sex ratio 4/1) in order to obtain spontaneous reproduction. The reproduction was tested with 6 females in Low-Flow rate conditions and 6 females in High-Flow rate conditions. The results showed that the designed closed-loop system made it possible to carry out a more spontaneous reproduction for more than 80% of the females that underwent standardized gonadotropic treatment and favored the automatic and complete transfer of the eggs to the hatchery. The results also point out that high or low water current conditions in the tank do not hinder the mating and the emission of gametes by the breeders, but the High-Flow rate in the two incubation chambers showed unsuitable hydrodynamic conditions for embryonic development resulting in a constant loss of viable eggs which reached a mortality of 100% among females with the highest incubation density. |
author2 |
O. Mordenti A. Casalini M. Mandelli A. Di Biase |
format |
Article in Journal/Newspaper |
author |
MORDENTI, OLIVIERO CASALINI, ANTONIO MANDELLI, MICHAELA DI BIASE, ANDREA |
author_facet |
MORDENTI, OLIVIERO CASALINI, ANTONIO MANDELLI, MICHAELA DI BIASE, ANDREA |
author_sort |
MORDENTI, OLIVIERO |
title |
A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
title_short |
A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
title_full |
A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
title_fullStr |
A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
title_full_unstemmed |
A closed recirculating aquaculture system for artificial seed production of the European eel (Anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
title_sort |
closed recirculating aquaculture system for artificial seed production of the european eel (anguilla anguilla): technology development for spontaneous spawning and eggs incubation |
publishDate |
2014 |
url |
http://hdl.handle.net/11585/216867 https://doi.org/10.1016/j.aquaeng.2013.12.002 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000333000200011 volume:58 firstpage:88 lastpage:94 numberofpages:7 journal:AQUACULTURAL ENGINEERING http://hdl.handle.net/11585/216867 doi:10.1016/j.aquaeng.2013.12.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84893841832 |
op_doi |
https://doi.org/10.1016/j.aquaeng.2013.12.002 |
container_title |
Aquacultural Engineering |
container_volume |
58 |
container_start_page |
88 |
op_container_end_page |
94 |
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1810480727698964480 |