Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole
Shape quality is very important in flatfish aquaculture due to the impact on commercialization. The Senegalese sole (<i>Solea senegalensis</i>) is a valuable flatfish with a highly elliptic body that slightly changes with age and size, and it is prone to accumulating malformations during...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Animals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-2615/11/5/1206 |
| _version_ | 1797536695654023168 |
|---|---|
| author | Israel Guerrero-Cozar Eduardo Jimenez-Fernandez Concha Berbel Elena Espinosa Manuel Gonzalo Claros Ricardo Zerolo Manuel Manchado |
| author_facet | Israel Guerrero-Cozar Eduardo Jimenez-Fernandez Concha Berbel Elena Espinosa Manuel Gonzalo Claros Ricardo Zerolo Manuel Manchado |
| author_sort | Israel Guerrero-Cozar |
| collection | DOAJ |
| description | Shape quality is very important in flatfish aquaculture due to the impact on commercialization. The Senegalese sole (<i>Solea senegalensis</i>) is a valuable flatfish with a highly elliptic body that slightly changes with age and size, and it is prone to accumulating malformations during the production cycle. The present study aims to investigate the genetic parameters of two growth traits (weight and standard length) and six shape quality predictors (ellipticity, three body heights (body height at the pectoral fin base [BHP], body maximum height [BMH] and caudal peduncle height [CPH]) and two ratios (BMH/BHP and BMH/CPH)). These traits were measured before the on-growing stage (age ~400 days (d)) and at harvest (~800 d). Phenotypic data, heritabilities and genetic and phenotypic correlations between the traits are presented and discussed. High or very high heritabilities (0.433–0.774) were found for growth traits, body heights and ellipticity and they were higher at 400 than 800 d. In contrast, the ratios of BMH/BHP and BMH/CPH were less heritable (0.144–0.306). Positive and very high (>0.95) correlations between growth traits and the three heights were found and decreased with age. In contrast, ellipticity had negative and medium-high genetic correlations with growth traits and heights, indicating fish selected for bigger size would also become rounder. The ratio of BMH/CPH showed low genetic correlations with all traits and provided complementary information to ellipticity for a better fitting to the expected lanceolate body morphology of sole. The genetic correlations for all traits at both ages were very high, indicating that selection before entering the growth-out stage in recirculation aquaculture systems is recommended to accelerate genetic gains. |
| first_indexed | 2024-03-10T12:04:26Z |
| format | Article |
| id | doaj.art-194d176f132d4792b243ec9041a4eaac |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T12:04:26Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-194d176f132d4792b243ec9041a4eaac2023-11-21T16:42:06ZengMDPI AGAnimals2076-26152021-04-01115120610.3390/ani11051206Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese SoleIsrael Guerrero-Cozar0Eduardo Jimenez-Fernandez1Concha Berbel2Elena Espinosa3Manuel Gonzalo Claros4Ricardo Zerolo5Manuel Manchado6IFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María Cádiz, SpainFree Radical Research Group, Centre for Health Sciences, University of the Highlands and Islands, Inverness IV2 3JH, UKIFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María Cádiz, SpainMolecular Biology and Biochemistry Department, University of Málaga, 29071 Málaga, SpainMolecular Biology and Biochemistry Department, University of Málaga, 29071 Málaga, SpainCUPIMAR, Ctra. Carraca, n° 2 Salina San Juan Bautista, San Fernando, 11100 Cádiz, SpainIFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María Cádiz, SpainShape quality is very important in flatfish aquaculture due to the impact on commercialization. The Senegalese sole (<i>Solea senegalensis</i>) is a valuable flatfish with a highly elliptic body that slightly changes with age and size, and it is prone to accumulating malformations during the production cycle. The present study aims to investigate the genetic parameters of two growth traits (weight and standard length) and six shape quality predictors (ellipticity, three body heights (body height at the pectoral fin base [BHP], body maximum height [BMH] and caudal peduncle height [CPH]) and two ratios (BMH/BHP and BMH/CPH)). These traits were measured before the on-growing stage (age ~400 days (d)) and at harvest (~800 d). Phenotypic data, heritabilities and genetic and phenotypic correlations between the traits are presented and discussed. High or very high heritabilities (0.433–0.774) were found for growth traits, body heights and ellipticity and they were higher at 400 than 800 d. In contrast, the ratios of BMH/BHP and BMH/CPH were less heritable (0.144–0.306). Positive and very high (>0.95) correlations between growth traits and the three heights were found and decreased with age. In contrast, ellipticity had negative and medium-high genetic correlations with growth traits and heights, indicating fish selected for bigger size would also become rounder. The ratio of BMH/CPH showed low genetic correlations with all traits and provided complementary information to ellipticity for a better fitting to the expected lanceolate body morphology of sole. The genetic correlations for all traits at both ages were very high, indicating that selection before entering the growth-out stage in recirculation aquaculture systems is recommended to accelerate genetic gains.https://www.mdpi.com/2076-2615/11/5/1206Senegalese solegenetic estimatesshapegrowthbreeding |
| spellingShingle | Israel Guerrero-Cozar Eduardo Jimenez-Fernandez Concha Berbel Elena Espinosa Manuel Gonzalo Claros Ricardo Zerolo Manuel Manchado Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole Animals Senegalese sole genetic estimates shape growth breeding |
| title | Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole |
| title_full | Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole |
| title_fullStr | Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole |
| title_full_unstemmed | Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole |
| title_short | Genetic Estimates for Growth and Shape-Related Traits in the Flatfish Senegalese Sole |
| title_sort | genetic estimates for growth and shape related traits in the flatfish senegalese sole |
| topic | Senegalese sole genetic estimates shape growth breeding |
| url | https://www.mdpi.com/2076-2615/11/5/1206 |
| work_keys_str_mv | AT israelguerrerocozar geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole AT eduardojimenezfernandez geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole AT conchaberbel geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole AT elenaespinosa geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole AT manuelgonzaloclaros geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole AT ricardozerolo geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole AT manuelmanchado geneticestimatesforgrowthandshaperelatedtraitsintheflatfishsenegalesesole |