The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock
Daily growth patterns and their relationship with reproduction was analyzed in the European hake from the Galician Shelf, where it shows a very protracted spawning with three spawning peaks. The daily growth analysis was performed in otoliths of adult females on the transversal section of the sagitt...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Fishes |
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| Online Access: | https://www.mdpi.com/2410-3888/7/4/208 |
| _version_ | 1797410317931642880 |
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| author | Cristina García-Fernández Rosario Domínguez-Petit Fran Saborido-Rey |
| author_facet | Cristina García-Fernández Rosario Domínguez-Petit Fran Saborido-Rey |
| author_sort | Cristina García-Fernández |
| collection | DOAJ |
| description | Daily growth patterns and their relationship with reproduction was analyzed in the European hake from the Galician Shelf, where it shows a very protracted spawning with three spawning peaks. The daily growth analysis was performed in otoliths of adult females on the transversal section of the sagittae otolith. Daily increments were measured from the border to the nucleus in females until they were discernible. Results show that daily growth of females decreases during the spawning period because they allocate less energy to somatic growth in favor of the production of gametes, with an increase in growth in July. Lastly, daily growth individual trends showed a “spawning pattern” in 28% of medium and large females, suggesting an individual spawning period of one to two months, with 4–5 valleys of narrow daily increments, likely associated to batch release: individual spawning frequency would be 4–5 days. This is the first time that individual spawning frequency in hake is estimated based on individual data. Finally, the spawning pattern is detected only once per year, indicating that a single female participates only in one spawning peak per year, supporting the hypothesis of the existence of two or more spawning components in the stock. |
| first_indexed | 2024-03-09T04:27:20Z |
| format | Article |
| id | doaj.art-f1534e98ebae44bdb3f8ffcc7f2eb78a |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-03-09T04:27:20Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj.art-f1534e98ebae44bdb3f8ffcc7f2eb78a2023-12-03T13:38:56ZengMDPI AGFishes2410-38882022-08-017420810.3390/fishes7040208The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern StockCristina García-Fernández0Rosario Domínguez-Petit1Fran Saborido-Rey2Instituto de Investigaciones Marinas (IIM-CSIC), 36208 Vigo, SpainCentro Oceanográfico de Vigo (IEO-CSIC), 36390 Vigo, SpainInstituto de Investigaciones Marinas (IIM-CSIC), 36208 Vigo, SpainDaily growth patterns and their relationship with reproduction was analyzed in the European hake from the Galician Shelf, where it shows a very protracted spawning with three spawning peaks. The daily growth analysis was performed in otoliths of adult females on the transversal section of the sagittae otolith. Daily increments were measured from the border to the nucleus in females until they were discernible. Results show that daily growth of females decreases during the spawning period because they allocate less energy to somatic growth in favor of the production of gametes, with an increase in growth in July. Lastly, daily growth individual trends showed a “spawning pattern” in 28% of medium and large females, suggesting an individual spawning period of one to two months, with 4–5 valleys of narrow daily increments, likely associated to batch release: individual spawning frequency would be 4–5 days. This is the first time that individual spawning frequency in hake is estimated based on individual data. Finally, the spawning pattern is detected only once per year, indicating that a single female participates only in one spawning peak per year, supporting the hypothesis of the existence of two or more spawning components in the stock.https://www.mdpi.com/2410-3888/7/4/208trade-offdaily growthspawningotolithEuropean hake |
| spellingShingle | Cristina García-Fernández Rosario Domínguez-Petit Fran Saborido-Rey The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock Fishes trade-off daily growth spawning otolith European hake |
| title | The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock |
| title_full | The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock |
| title_fullStr | The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock |
| title_full_unstemmed | The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock |
| title_short | The Use of Daily Growth to Analyze Individual Spawning Dynamics in an Asynchronous Population: The Case of the European Hake from the Southern Stock |
| title_sort | use of daily growth to analyze individual spawning dynamics in an asynchronous population the case of the european hake from the southern stock |
| topic | trade-off daily growth spawning otolith European hake |
| url | https://www.mdpi.com/2410-3888/7/4/208 |
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