The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea
Several studies have confirmed that the North Atlantic Oscillation (NAO) has a direct effect on tuna across a range of biological aspects, such as abundance, catchability, recruitment, and physical condition (LC), especially during winter season (NAOw). However, its effect on reproductive biology ha...
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ftcsic:oai:digital.csic.es:10261/326589 2024-02-11T10:06:32+01:00 The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea Báez, José Carlos Muñoz-Exposito, P. Gómez-Vives, María José Godoy-Garrido, María Dolores Macías-López, Ángel David 2019 http://hdl.handle.net/10508/14784 http://hdl.handle.net/10261/326589 en eng Elsevier BV Centro Oceanográfico de Málaga 0165-7836 http://hdl.handle.net/10508/14784 http://hdl.handle.net/10261/326589 24908 open Centro Oceanográfico de Málaga Atlantic bonito Pesquerías Bullet tuna Gonadosomatic index Small tuna Atmospheric oscillations artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic 2024-01-16T11:48:32Z Several studies have confirmed that the North Atlantic Oscillation (NAO) has a direct effect on tuna across a range of biological aspects, such as abundance, catchability, recruitment, and physical condition (LC), especially during winter season (NAOw). However, its effect on reproductive biology has been barely investigated. Thus, the main aim of this study was to investigate the effect of the NAO on the physical condition index and gonadosomatic index (GSI) of the three most commercially exploited small species of migrating tuna (i.e. little tunny, bullet tuna, and Atlantic bonito) in the Mediterranean Sea. A positive direct correlation was found between little tunny and Atlantic bonito and the gonadosomatic and the physical condition indexes. In addition, a strong correlation was found between the NAOw and the gonadosomatic and LC indexes, which could lead to higher reproductive investment in gonad growth before the spawning season. In contrast, bullet tuna had a low LC index during peak gonad growth and were less affected by NAOw oscillations. In the case of bullet tuna, these results could be explained by a longer reproductive period that would lead to faster fat consumption before the reproductive period than in the other species considered and greater dependence on the surrounding environmental conditions for reproductive success. Sí Article in Journal/Newspaper North Atlantic North Atlantic oscillation Digital.CSIC (Spanish National Research Council) |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de Málaga Atlantic bonito Pesquerías Bullet tuna Gonadosomatic index Small tuna Atmospheric oscillations |
spellingShingle |
Centro Oceanográfico de Málaga Atlantic bonito Pesquerías Bullet tuna Gonadosomatic index Small tuna Atmospheric oscillations Báez, José Carlos Muñoz-Exposito, P. Gómez-Vives, María José Godoy-Garrido, María Dolores Macías-López, Ángel David The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea |
topic_facet |
Centro Oceanográfico de Málaga Atlantic bonito Pesquerías Bullet tuna Gonadosomatic index Small tuna Atmospheric oscillations |
description |
Several studies have confirmed that the North Atlantic Oscillation (NAO) has a direct effect on tuna across a range of biological aspects, such as abundance, catchability, recruitment, and physical condition (LC), especially during winter season (NAOw). However, its effect on reproductive biology has been barely investigated. Thus, the main aim of this study was to investigate the effect of the NAO on the physical condition index and gonadosomatic index (GSI) of the three most commercially exploited small species of migrating tuna (i.e. little tunny, bullet tuna, and Atlantic bonito) in the Mediterranean Sea. A positive direct correlation was found between little tunny and Atlantic bonito and the gonadosomatic and the physical condition indexes. In addition, a strong correlation was found between the NAOw and the gonadosomatic and LC indexes, which could lead to higher reproductive investment in gonad growth before the spawning season. In contrast, bullet tuna had a low LC index during peak gonad growth and were less affected by NAOw oscillations. In the case of bullet tuna, these results could be explained by a longer reproductive period that would lead to faster fat consumption before the reproductive period than in the other species considered and greater dependence on the surrounding environmental conditions for reproductive success. Sí |
format |
Article in Journal/Newspaper |
author |
Báez, José Carlos Muñoz-Exposito, P. Gómez-Vives, María José Godoy-Garrido, María Dolores Macías-López, Ángel David |
author_facet |
Báez, José Carlos Muñoz-Exposito, P. Gómez-Vives, María José Godoy-Garrido, María Dolores Macías-López, Ángel David |
author_sort |
Báez, José Carlos |
title |
The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea |
title_short |
The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea |
title_full |
The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea |
title_fullStr |
The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea |
title_full_unstemmed |
The NAO affects the reproductive potential of small tuna migrating from the Mediterranean Sea |
title_sort |
nao affects the reproductive potential of small tuna migrating from the mediterranean sea |
publisher |
Elsevier BV |
publishDate |
2019 |
url |
http://hdl.handle.net/10508/14784 http://hdl.handle.net/10261/326589 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Centro Oceanográfico de Málaga 0165-7836 http://hdl.handle.net/10508/14784 http://hdl.handle.net/10261/326589 24908 |
op_rights |
open |
_version_ |
1790604310456827904 |