Reproductive traits in different Nile tilapia genetic groups
ABSTRACT The aim of this study was to evaluate the reproductive traits of the non-inbred and inbred AquaAmérica, GIFT and AquaAmérica × GIFTgenetic groups. Six fish from each genetic group were used (2 females:1 male). Females were examined for the presence of eggs in their mouth at every four days,...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Minas Gerais
2020-11-01
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| Series: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000501797&tlng=en |
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| author | A.C.F. Silva R.A.C. Corrêa Filho A.S. Ventura A.L. Nunes L.M. Laice R.P. Ribeiro C.A.L. Oliveira L.C. Almeida P.T.L. Barbosa J.A. Povh |
| author_facet | A.C.F. Silva R.A.C. Corrêa Filho A.S. Ventura A.L. Nunes L.M. Laice R.P. Ribeiro C.A.L. Oliveira L.C. Almeida P.T.L. Barbosa J.A. Povh |
| author_sort | A.C.F. Silva |
| collection | DOAJ |
| description | ABSTRACT The aim of this study was to evaluate the reproductive traits of the non-inbred and inbred AquaAmérica, GIFT and AquaAmérica × GIFTgenetic groups. Six fish from each genetic group were used (2 females:1 male). Females were examined for the presence of eggs in their mouth at every four days, for 12 weeks. Reproduction occurred in all genetic groups (GIFT: 100%; non-inbred AquaAmérica and AquaAmérica ×GIFT: 75%; inbred AquaAmérica: 50%). Female weight, female standard length, total spawning weight, absolute fecundity, relative fecundity, spawn index and hatching rate did not differ significantly between the genetic groups. However, the non-inbred AquaAmérica variety showed lower values (P<0.05) for egg diameter (2.4mm) and egg weight (4.2mg) and higher values (P<0.05) for relative number of eggs (247.6 eggs/g of egg) than GIFT (egg diameter: 2.8mm; egg weight: 5.7mg; relative number of eggs: 175.4 eggs/g of egg) and AquaAmérica ×GIFT (egg diameter: 2.8mm; egg weight: 5.9mg; relative number of eggs: 168.8 eggs/g of egg). In conclusion, the non-inbred AquaAmérica variety produces smaller, lighter eggs but a higher relative number of eggs than the GIFT variety and the AquaAmérica ×GIFT cross; and inbreeding negatively affects spawning rate. |
| first_indexed | 2024-12-20T15:54:34Z |
| format | Article |
| id | doaj.art-ca37df1e2ed246918e1bdb862ff8db3c |
| institution | Directory Open Access Journal |
| issn | 1678-4162 |
| language | English |
| last_indexed | 2024-12-20T15:54:34Z |
| publishDate | 2020-11-01 |
| publisher | Universidade Federal de Minas Gerais |
| record_format | Article |
| series | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| spelling | doaj.art-ca37df1e2ed246918e1bdb862ff8db3c2022-12-21T19:34:33ZengUniversidade Federal de Minas GeraisArquivo Brasileiro de Medicina Veterinária e Zootecnia1678-41622020-11-017251797180410.1590/1678-4162-11764Reproductive traits in different Nile tilapia genetic groupsA.C.F. Silvahttps://orcid.org/0000-0001-7252-4805R.A.C. Corrêa Filhohttps://orcid.org/0000-0002-4662-5247A.S. Venturahttps://orcid.org/0000-0002-4656-9003A.L. Nuneshttps://orcid.org/0000-0002-0474-8011L.M. Laicehttps://orcid.org/0000-0002-0322-5454R.P. Ribeirohttps://orcid.org/0000-0001-7752-3692C.A.L. Oliveirahttps://orcid.org/0000-0003-2504-3261L.C. Almeidahttps://orcid.org/0000-0002-4857-2732P.T.L. Barbosahttps://orcid.org/0000-0002-0622-2048J.A. Povhhttps://orcid.org/0000-0003-3315-018XABSTRACT The aim of this study was to evaluate the reproductive traits of the non-inbred and inbred AquaAmérica, GIFT and AquaAmérica × GIFTgenetic groups. Six fish from each genetic group were used (2 females:1 male). Females were examined for the presence of eggs in their mouth at every four days, for 12 weeks. Reproduction occurred in all genetic groups (GIFT: 100%; non-inbred AquaAmérica and AquaAmérica ×GIFT: 75%; inbred AquaAmérica: 50%). Female weight, female standard length, total spawning weight, absolute fecundity, relative fecundity, spawn index and hatching rate did not differ significantly between the genetic groups. However, the non-inbred AquaAmérica variety showed lower values (P<0.05) for egg diameter (2.4mm) and egg weight (4.2mg) and higher values (P<0.05) for relative number of eggs (247.6 eggs/g of egg) than GIFT (egg diameter: 2.8mm; egg weight: 5.7mg; relative number of eggs: 175.4 eggs/g of egg) and AquaAmérica ×GIFT (egg diameter: 2.8mm; egg weight: 5.9mg; relative number of eggs: 168.8 eggs/g of egg). In conclusion, the non-inbred AquaAmérica variety produces smaller, lighter eggs but a higher relative number of eggs than the GIFT variety and the AquaAmérica ×GIFT cross; and inbreeding negatively affects spawning rate.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000501797&tlng=enAquaAméricaFish reproductiongenetic breedingGIFTOreochromis niloticus |
| spellingShingle | A.C.F. Silva R.A.C. Corrêa Filho A.S. Ventura A.L. Nunes L.M. Laice R.P. Ribeiro C.A.L. Oliveira L.C. Almeida P.T.L. Barbosa J.A. Povh Reproductive traits in different Nile tilapia genetic groups Arquivo Brasileiro de Medicina Veterinária e Zootecnia AquaAmérica Fish reproduction genetic breeding GIFT Oreochromis niloticus |
| title | Reproductive traits in different Nile tilapia genetic groups |
| title_full | Reproductive traits in different Nile tilapia genetic groups |
| title_fullStr | Reproductive traits in different Nile tilapia genetic groups |
| title_full_unstemmed | Reproductive traits in different Nile tilapia genetic groups |
| title_short | Reproductive traits in different Nile tilapia genetic groups |
| title_sort | reproductive traits in different nile tilapia genetic groups |
| topic | AquaAmérica Fish reproduction genetic breeding GIFT Oreochromis niloticus |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000501797&tlng=en |
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