From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean
Small pelagic fish are key elements of marine trophic networks and are of great importance to the total landing of marine species. Over the last decades, a decrease in biomass and catches of European sardine has been described, especially in the Mediterranean Sea, as an indication of a drop in stock condition. Multiple causes, including direct and indirect anthropogenic factors, seem to affect this ecologically and economically important species. To address this issue, it is important to identify the current variability in sardine status and understand the strategies for energy allocation, which are intimately related to reproductive potential and recruitment. We analyzed the somatic condition through tissue and mesenteric lipid measurements, relative condition (Kn) and hepatosomatic (HSI) indices, and reproductive condition with the gonadosomatic index (GSI) in four subareas of the Mediterranean (Northern Alboran, Northern Spain, the Northern Adriatic, and the Aegean Sea) and an outgroup from the Atlantic. The analyses were performed within the gonadal development cycle since translocation to reproduction may mask the state of actual energy reserves for comparison. The results revealed marked differences in health status among subareas, highlighting the low condition of Northern Spain sardines throughout the annual cycle. The uniform condition throughout gonadal development in the Northern Adriatic suggests that resource availability modulates the reproductive strategy since in this locality, sardines would have high dependence on immediate reserves, not behaving as strict capital breeders. Moreover, similarities between Alboran and Atlantic stocks are discussed, highlighting the marked energy replenishment of the latter after reproduction compared to the Mediterranean stocks. The Aegean stock was the fastest to reach its maximum after spawning, presenting low condition values from the developing to actively spawning period, but with the greatest recovery at the regressing phase, coinciding with a peak in productivity. Finally, the role of the liver in sardine energy storage is analyzed considering stock heterogeneity, potentially indicating that HSI is intimately related to feeding activity. Given the divergences among stocks, we propose concrete measures for managing this resource (i.e., the need for adapting the close seasons), which could be applied to other species in similar contexts.
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Language: | eng |
Subjects: | M40 - Écologie aquatique, sardine, Sardina pilchardus, ressources pélagiques, Sardina, frai, poisson marin, facteur anthropogène, rapport gonado-somatique, http://aims.fao.org/aos/agrovoc/c_6813, http://aims.fao.org/aos/agrovoc/c_37047, http://aims.fao.org/aos/agrovoc/c_6da8d357, http://aims.fao.org/aos/agrovoc/c_6810, http://aims.fao.org/aos/agrovoc/c_14490, http://aims.fao.org/aos/agrovoc/c_b89db8ea, http://aims.fao.org/aos/agrovoc/c_34996, http://aims.fao.org/aos/agrovoc/c_0a817fe8, http://aims.fao.org/aos/agrovoc/c_4699, http://aims.fao.org/aos/agrovoc/c_6970, http://aims.fao.org/aos/agrovoc/c_7273, http://aims.fao.org/aos/agrovoc/c_4698, http://aims.fao.org/aos/agrovoc/c_136, http://aims.fao.org/aos/agrovoc/c_147, |
Online Access: | http://agritrop.cirad.fr/607119/ http://agritrop.cirad.fr/607119/1/Caballero-Huertas%20et%20al%20FMS.pdf |
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M40 - Écologie aquatique sardine Sardina pilchardus ressources pélagiques Sardina frai poisson marin facteur anthropogène rapport gonado-somatique http://aims.fao.org/aos/agrovoc/c_6813 http://aims.fao.org/aos/agrovoc/c_37047 http://aims.fao.org/aos/agrovoc/c_6da8d357 http://aims.fao.org/aos/agrovoc/c_6810 http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_b89db8ea http://aims.fao.org/aos/agrovoc/c_34996 http://aims.fao.org/aos/agrovoc/c_0a817fe8 http://aims.fao.org/aos/agrovoc/c_4699 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_7273 http://aims.fao.org/aos/agrovoc/c_4698 http://aims.fao.org/aos/agrovoc/c_136 http://aims.fao.org/aos/agrovoc/c_147 M40 - Écologie aquatique sardine Sardina pilchardus ressources pélagiques Sardina frai poisson marin facteur anthropogène rapport gonado-somatique http://aims.fao.org/aos/agrovoc/c_6813 http://aims.fao.org/aos/agrovoc/c_37047 http://aims.fao.org/aos/agrovoc/c_6da8d357 http://aims.fao.org/aos/agrovoc/c_6810 http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_b89db8ea http://aims.fao.org/aos/agrovoc/c_34996 http://aims.fao.org/aos/agrovoc/c_0a817fe8 http://aims.fao.org/aos/agrovoc/c_4699 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_7273 http://aims.fao.org/aos/agrovoc/c_4698 http://aims.fao.org/aos/agrovoc/c_136 http://aims.fao.org/aos/agrovoc/c_147 |
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M40 - Écologie aquatique sardine Sardina pilchardus ressources pélagiques Sardina frai poisson marin facteur anthropogène rapport gonado-somatique http://aims.fao.org/aos/agrovoc/c_6813 http://aims.fao.org/aos/agrovoc/c_37047 http://aims.fao.org/aos/agrovoc/c_6da8d357 http://aims.fao.org/aos/agrovoc/c_6810 http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_b89db8ea http://aims.fao.org/aos/agrovoc/c_34996 http://aims.fao.org/aos/agrovoc/c_0a817fe8 http://aims.fao.org/aos/agrovoc/c_4699 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_7273 http://aims.fao.org/aos/agrovoc/c_4698 http://aims.fao.org/aos/agrovoc/c_136 http://aims.fao.org/aos/agrovoc/c_147 M40 - Écologie aquatique sardine Sardina pilchardus ressources pélagiques Sardina frai poisson marin facteur anthropogène rapport gonado-somatique http://aims.fao.org/aos/agrovoc/c_6813 http://aims.fao.org/aos/agrovoc/c_37047 http://aims.fao.org/aos/agrovoc/c_6da8d357 http://aims.fao.org/aos/agrovoc/c_6810 http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_b89db8ea http://aims.fao.org/aos/agrovoc/c_34996 http://aims.fao.org/aos/agrovoc/c_0a817fe8 http://aims.fao.org/aos/agrovoc/c_4699 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_7273 http://aims.fao.org/aos/agrovoc/c_4698 http://aims.fao.org/aos/agrovoc/c_136 http://aims.fao.org/aos/agrovoc/c_147 Caballero Huertas, Marta Frigola-Tepe, Xènia Viñas, Jordi Muñoz, Marta From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean |
description |
Small pelagic fish are key elements of marine trophic networks and are of great importance to the total landing of marine species. Over the last decades, a decrease in biomass and catches of European sardine has been described, especially in the Mediterranean Sea, as an indication of a drop in stock condition. Multiple causes, including direct and indirect anthropogenic factors, seem to affect this ecologically and economically important species. To address this issue, it is important to identify the current variability in sardine status and understand the strategies for energy allocation, which are intimately related to reproductive potential and recruitment. We analyzed the somatic condition through tissue and mesenteric lipid measurements, relative condition (Kn) and hepatosomatic (HSI) indices, and reproductive condition with the gonadosomatic index (GSI) in four subareas of the Mediterranean (Northern Alboran, Northern Spain, the Northern Adriatic, and the Aegean Sea) and an outgroup from the Atlantic. The analyses were performed within the gonadal development cycle since translocation to reproduction may mask the state of actual energy reserves for comparison. The results revealed marked differences in health status among subareas, highlighting the low condition of Northern Spain sardines throughout the annual cycle. The uniform condition throughout gonadal development in the Northern Adriatic suggests that resource availability modulates the reproductive strategy since in this locality, sardines would have high dependence on immediate reserves, not behaving as strict capital breeders. Moreover, similarities between Alboran and Atlantic stocks are discussed, highlighting the marked energy replenishment of the latter after reproduction compared to the Mediterranean stocks. The Aegean stock was the fastest to reach its maximum after spawning, presenting low condition values from the developing to actively spawning period, but with the greatest recovery at the regressing phase, coinciding with a peak in productivity. Finally, the role of the liver in sardine energy storage is analyzed considering stock heterogeneity, potentially indicating that HSI is intimately related to feeding activity. Given the divergences among stocks, we propose concrete measures for managing this resource (i.e., the need for adapting the close seasons), which could be applied to other species in similar contexts. |
format |
article |
topic_facet |
M40 - Écologie aquatique sardine Sardina pilchardus ressources pélagiques Sardina frai poisson marin facteur anthropogène rapport gonado-somatique http://aims.fao.org/aos/agrovoc/c_6813 http://aims.fao.org/aos/agrovoc/c_37047 http://aims.fao.org/aos/agrovoc/c_6da8d357 http://aims.fao.org/aos/agrovoc/c_6810 http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_b89db8ea http://aims.fao.org/aos/agrovoc/c_34996 http://aims.fao.org/aos/agrovoc/c_0a817fe8 http://aims.fao.org/aos/agrovoc/c_4699 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_7273 http://aims.fao.org/aos/agrovoc/c_4698 http://aims.fao.org/aos/agrovoc/c_136 http://aims.fao.org/aos/agrovoc/c_147 |
author |
Caballero Huertas, Marta Frigola-Tepe, Xènia Viñas, Jordi Muñoz, Marta |
author_facet |
Caballero Huertas, Marta Frigola-Tepe, Xènia Viñas, Jordi Muñoz, Marta |
author_sort |
Caballero Huertas, Marta |
title |
From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean |
title_short |
From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean |
title_full |
From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean |
title_fullStr |
From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean |
title_full_unstemmed |
From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean |
title_sort |
from west to east: heterogeneity in the life history traits of a small pelagic fish (sardina pilchardus) throughout the mediterranean |
url |
http://agritrop.cirad.fr/607119/ http://agritrop.cirad.fr/607119/1/Caballero-Huertas%20et%20al%20FMS.pdf |
work_keys_str_mv |
AT caballerohuertasmarta fromwesttoeastheterogeneityinthelifehistorytraitsofasmallpelagicfishsardinapilchardusthroughoutthemediterranean AT frigolatepexenia fromwesttoeastheterogeneityinthelifehistorytraitsofasmallpelagicfishsardinapilchardusthroughoutthemediterranean AT vinasjordi fromwesttoeastheterogeneityinthelifehistorytraitsofasmallpelagicfishsardinapilchardusthroughoutthemediterranean AT munozmarta fromwesttoeastheterogeneityinthelifehistorytraitsofasmallpelagicfishsardinapilchardusthroughoutthemediterranean |
_version_ |
1792500664520146944 |
spelling |
dig-cirad-fr-6071192024-01-29T06:16:49Z http://agritrop.cirad.fr/607119/ http://agritrop.cirad.fr/607119/ From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean. Caballero Huertas Marta, Frigola-Tepe Xènia, Viñas Jordi, Muñoz Marta. 2023. Frontiers in Marine Science, 10, 13 p.https://doi.org/10.3389/fmars.2023.1187071 <https://doi.org/10.3389/fmars.2023.1187071> From west to east: Heterogeneity in the life history traits of a small pelagic fish (Sardina pilchardus) throughout the Mediterranean Caballero Huertas, Marta Frigola-Tepe, Xènia Viñas, Jordi Muñoz, Marta eng 2023 Frontiers in Marine Science M40 - Écologie aquatique sardine Sardina pilchardus ressources pélagiques Sardina frai poisson marin facteur anthropogène rapport gonado-somatique http://aims.fao.org/aos/agrovoc/c_6813 http://aims.fao.org/aos/agrovoc/c_37047 http://aims.fao.org/aos/agrovoc/c_6da8d357 http://aims.fao.org/aos/agrovoc/c_6810 http://aims.fao.org/aos/agrovoc/c_14490 http://aims.fao.org/aos/agrovoc/c_b89db8ea http://aims.fao.org/aos/agrovoc/c_34996 http://aims.fao.org/aos/agrovoc/c_0a817fe8 mer Méditerranée Sénégal Espagne région méditerranéenne mer Adriatique mer Eégée http://aims.fao.org/aos/agrovoc/c_4699 http://aims.fao.org/aos/agrovoc/c_6970 http://aims.fao.org/aos/agrovoc/c_7273 http://aims.fao.org/aos/agrovoc/c_4698 http://aims.fao.org/aos/agrovoc/c_136 http://aims.fao.org/aos/agrovoc/c_147 Small pelagic fish are key elements of marine trophic networks and are of great importance to the total landing of marine species. Over the last decades, a decrease in biomass and catches of European sardine has been described, especially in the Mediterranean Sea, as an indication of a drop in stock condition. Multiple causes, including direct and indirect anthropogenic factors, seem to affect this ecologically and economically important species. To address this issue, it is important to identify the current variability in sardine status and understand the strategies for energy allocation, which are intimately related to reproductive potential and recruitment. We analyzed the somatic condition through tissue and mesenteric lipid measurements, relative condition (Kn) and hepatosomatic (HSI) indices, and reproductive condition with the gonadosomatic index (GSI) in four subareas of the Mediterranean (Northern Alboran, Northern Spain, the Northern Adriatic, and the Aegean Sea) and an outgroup from the Atlantic. The analyses were performed within the gonadal development cycle since translocation to reproduction may mask the state of actual energy reserves for comparison. The results revealed marked differences in health status among subareas, highlighting the low condition of Northern Spain sardines throughout the annual cycle. The uniform condition throughout gonadal development in the Northern Adriatic suggests that resource availability modulates the reproductive strategy since in this locality, sardines would have high dependence on immediate reserves, not behaving as strict capital breeders. Moreover, similarities between Alboran and Atlantic stocks are discussed, highlighting the marked energy replenishment of the latter after reproduction compared to the Mediterranean stocks. The Aegean stock was the fastest to reach its maximum after spawning, presenting low condition values from the developing to actively spawning period, but with the greatest recovery at the regressing phase, coinciding with a peak in productivity. Finally, the role of the liver in sardine energy storage is analyzed considering stock heterogeneity, potentially indicating that HSI is intimately related to feeding activity. Given the divergences among stocks, we propose concrete measures for managing this resource (i.e., the need for adapting the close seasons), which could be applied to other species in similar contexts. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/607119/1/Caballero-Huertas%20et%20al%20FMS.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.3389/fmars.2023.1187071 10.3389/fmars.2023.1187071 info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2023.1187071 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.3389/fmars.2023.1187071 |