Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds
This study evaluated the growth performance and survival rate of Anguilla anguilla glass eels reared in 4750 m2 earthen ponds and dependent on trophic resources provided by natural macrobenthic populations. Two ponds (M ponds) had mostly muddy-soil bottom whereas the other two (S ponds) had mostly s...
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Online Access: | http://hdl.handle.net/11581/392259 https://doi.org/10.1051/alr/2016011 |
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ftuncamerinoiris:oai:pubblicazioni.unicam.it:11581/392259 2024-04-14T08:00:59+00:00 Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds Mordenti, Oliviero Biase, Andrea Di Casalini, Antonio Emmanuele, Pietro MELOTTI, Paolo RONCARATI, Alessandra Mordenti, Oliviero Biase, Andrea Di Casalini, Antonio Emmanuele, Pietro Melotti, Paolo Roncarati, Alessandra 2016 STAMPA http://hdl.handle.net/11581/392259 https://doi.org/10.1051/alr/2016011 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000377049900005 volume:29 issue:105 firstpage:1 lastpage:7 numberofpages:7 journal:AQUATIC LIVING RESOURCES http://hdl.handle.net/11581/392259 doi:10.1051/alr/2016011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84971482891 https://doi.org/10.1051/alr/2016011 info:eu-repo/semantics/openAccess info:eu-repo/semantics/article 2016 ftuncamerinoiris https://doi.org/10.1051/alr/2016011 2024-03-21T20:37:40Z This study evaluated the growth performance and survival rate of Anguilla anguilla glass eels reared in 4750 m2 earthen ponds and dependent on trophic resources provided by natural macrobenthic populations. Two ponds (M ponds) had mostly muddy-soil bottom whereas the other two (S ponds) had mostly sandy-soil bottom. A total of 4795 pigmented glass eels (0.73 ± 0.26 g) were stocked, at a density of 1.6 fish/m2. After 360 days of growth, in S ponds eels exhibited a final mean body weight (15.57 ± 5.36 g) significantly higher than those seeded in M ponds (9.85 ± 4.11 g). Mean final length of S eels (21.55 ± 3.33 cm) was statistically higher than that of M eels (17.85 ± 2.42 cm). In M ponds, relatively higher abundances of Crustacea appeared to promote higher survival of glass eels in the post-seeding phase. Consequently, the relatively higher densities of eels in M ponds could have resulted in slower growth compared to eels in S ponds; however, eels grown in M ponds exhibited a significantly higher conditioning factor at the end of the growth period. We conclude that M ponds host highly viable macrobenthic prey populations that better sustain the early growth phases of A. anguilla. Furthermore, this study demonstrated that artificial feed supplements are not necessary for the rearing of A. anguilla juveniles in earthen ponds Article in Journal/Newspaper Anguilla anguilla CAMPUS Pubblicazioni Scientifiche Unicam (Università di Camerino) Two Ponds ENVELOPE(-57.915,-57.915,49.683,49.683) Aquatic Living Resources 29 1 105 |
institution |
Open Polar |
collection |
CAMPUS Pubblicazioni Scientifiche Unicam (Università di Camerino) |
op_collection_id |
ftuncamerinoiris |
language |
English |
description |
This study evaluated the growth performance and survival rate of Anguilla anguilla glass eels reared in 4750 m2 earthen ponds and dependent on trophic resources provided by natural macrobenthic populations. Two ponds (M ponds) had mostly muddy-soil bottom whereas the other two (S ponds) had mostly sandy-soil bottom. A total of 4795 pigmented glass eels (0.73 ± 0.26 g) were stocked, at a density of 1.6 fish/m2. After 360 days of growth, in S ponds eels exhibited a final mean body weight (15.57 ± 5.36 g) significantly higher than those seeded in M ponds (9.85 ± 4.11 g). Mean final length of S eels (21.55 ± 3.33 cm) was statistically higher than that of M eels (17.85 ± 2.42 cm). In M ponds, relatively higher abundances of Crustacea appeared to promote higher survival of glass eels in the post-seeding phase. Consequently, the relatively higher densities of eels in M ponds could have resulted in slower growth compared to eels in S ponds; however, eels grown in M ponds exhibited a significantly higher conditioning factor at the end of the growth period. We conclude that M ponds host highly viable macrobenthic prey populations that better sustain the early growth phases of A. anguilla. Furthermore, this study demonstrated that artificial feed supplements are not necessary for the rearing of A. anguilla juveniles in earthen ponds |
author2 |
Mordenti, Oliviero Biase, Andrea Di Casalini, Antonio Emmanuele, Pietro Melotti, Paolo Roncarati, Alessandra |
format |
Article in Journal/Newspaper |
author |
Mordenti, Oliviero Biase, Andrea Di Casalini, Antonio Emmanuele, Pietro MELOTTI, Paolo RONCARATI, Alessandra |
spellingShingle |
Mordenti, Oliviero Biase, Andrea Di Casalini, Antonio Emmanuele, Pietro MELOTTI, Paolo RONCARATI, Alessandra Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds |
author_facet |
Mordenti, Oliviero Biase, Andrea Di Casalini, Antonio Emmanuele, Pietro MELOTTI, Paolo RONCARATI, Alessandra |
author_sort |
Mordenti, Oliviero |
title |
Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds |
title_short |
Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds |
title_full |
Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds |
title_fullStr |
Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds |
title_full_unstemmed |
Growth performances and natural diet of European eel (Anguilla anguilla L.) reared in muddy and sandy ponds |
title_sort |
growth performances and natural diet of european eel (anguilla anguilla l.) reared in muddy and sandy ponds |
publishDate |
2016 |
url |
http://hdl.handle.net/11581/392259 https://doi.org/10.1051/alr/2016011 |
long_lat |
ENVELOPE(-57.915,-57.915,49.683,49.683) |
geographic |
Two Ponds |
geographic_facet |
Two Ponds |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000377049900005 volume:29 issue:105 firstpage:1 lastpage:7 numberofpages:7 journal:AQUATIC LIVING RESOURCES http://hdl.handle.net/11581/392259 doi:10.1051/alr/2016011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84971482891 https://doi.org/10.1051/alr/2016011 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1051/alr/2016011 |
container_title |
Aquatic Living Resources |
container_volume |
29 |
container_issue |
1 |
container_start_page |
105 |
_version_ |
1796305932866551808 |