Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé]
Sardinella aurita is an overexploited small pelagic fish and a key species in Senegal at socioeconomics level, nevertheless the growth parameters which is a good indicator of fish stressors, have not been updated since 30 years. In this work, we analysed S. aurita (n = 32 300) age and growth in Sene...
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Language: | English |
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SRFCCSRP
2019
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Online Access: | http://www.documentation.ird.fr/hor/fdi:010078265 |
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openpolar |
institution |
Open Polar |
collection |
IRD (Institute de recherche pour le développement): Horizon |
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ftird |
language |
English |
description |
Sardinella aurita is an overexploited small pelagic fish and a key species in Senegal at socioeconomics level, nevertheless the growth parameters which is a good indicator of fish stressors, have not been updated since 30 years. In this work, we analysed S. aurita (n = 32 300) age and growth in Senegal taking into account the tropical seasonality. Growth parameters are then compared with those previously obtained in the literature on the same geographical area (since 60 to 34 years) and more widely in different locations in tropical North Atlantic and Mediterranean Sea. The results show a significant difference of growth parameters in Senegal since thirty years, indeed growth of S. aurita became slower and its maximum size has significantly decreased. The comparison of S. aurita variability in growth performance reported in Mauritania-Senegal coast, as well as in Mediterranean Sea and Eastern/Western Atlantic Ocean reveals a significant influence of environmental parameters and/or the level of exploitation. In one hand in tropical Atlantic, S. aurita growth in Eastern Central is similar to the one reported in Western Central, while S. aurita growth is rather slow in Mediterranean Sea where, vs tropical Atlantic, Sea temperature and prey availability are lower. On the other hand, in the Atlantic Western Central, where the fishing pressure on the stock is lower over the last decade vs Atlantic Eastern Central, an increase in asymptotic length is observed, while in the Mediterranean Sea and Atlantic Eastern Central, where the fishing pressure is higher, the asymptotic length has drastically decreased. We assume that the fishing pressure and the climate change, or a combination of both, have an effect on the biological parameters of S. aurita. |
author2 |
Brehmer, Patrice (ed.) Diogoul, N. (collab.) Zenk, C. (collab.) Vareilles, M. de (collab.) Keenlyside, N. (collab.) Nascimento, J.M. (collab.) Ramos, V. M. (collab.) Sow, B.A. (collab.) Fock, H. (collab.) Schmidt, J. (collab.) Ekau, W. (collab.) Mbaye, A. (collab.) Fall. A. (collab.) Monteiro, I. (collab.) Kouassi, A.M. (collab.) Silva, O. (collab.) Brochier, Timothée (collab.) Sall. M. (collab.) Mayif, M. (collab.) Koné, V. (collab.) Gorgues, Thomas (collab.) Ferreira Santos, C. (collab.) Bamy, I.L. (collab.) Barry, I. (collab.) Sidibe, M. (collab.) Diadhou, H. (collab.) |
format |
Text |
author |
Balde, B.S. Sow, F.N. Ba, K. Ekau, W. Kantoussan, J. Fall, M. Brehmer, Patrice Diouf, M. |
spellingShingle |
Balde, B.S. Sow, F.N. Ba, K. Ekau, W. Kantoussan, J. Fall, M. Brehmer, Patrice Diouf, M. Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
author_facet |
Balde, B.S. Sow, F.N. Ba, K. Ekau, W. Kantoussan, J. Fall, M. Brehmer, Patrice Diouf, M. |
author_sort |
Balde, B.S. |
title |
Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
title_short |
Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
title_full |
Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
title_fullStr |
Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
title_full_unstemmed |
Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
title_sort |
sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] |
publisher |
SRFCCSRP |
publishDate |
2019 |
url |
http://www.documentation.ird.fr/hor/fdi:010078265 |
op_coverage |
AFRIQUE DE L'OUEST SENEGAL ATLANTIQUE MEDITERRANEE |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010078265 oai:ird.fr:fdi:010078265 Balde B.S., Sow F.N., Ba K., Ekau W., Kantoussan J., Fall M., Brehmer Patrice, Diouf M. Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé]. In : Brehmer Patrice (ed.), Diogoul N. (collab.), Zenk C. (collab.), Vareilles M. de (collab.), Keenlyside N. (collab.), Nascimento J.M. (collab.), Ramos V. M. (collab.), Sow B.A. (collab.), Fock H. (collab.), Schmidt J. (collab.), Ekau W. (collab.), Mbaye A. (collab.), Fall. A. (collab.), Monteiro I. (collab.), Kouassi A.M. (collab.), Silva O. (collab.), Brochier Timothée (collab.), Sall. M. (collab.), Mayif M. (collab.), Koné V. (collab.), Gorgues Thomas (collab.), Ferreira Santos C. (collab.), Bamy I.L. (collab.), Barry I. (collab.), Sidibe M. (collab.), Diadhou H. (collab.) International conference ICAWA 2017 and 2018 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters. [s.l.] : SRFC/CSRP IRD, 2019, p. 124. ICAWA : International Conference AWA, 5., Lanzarote (ESP), 2018/04/17-20 |
_version_ |
1766135659074945024 |
spelling |
ftird:oai:ird.fr:fdi:010078265 2023-05-15T17:36:14+02:00 Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé] International conference ICAWA 2017 and 2018 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters Balde, B.S. Sow, F.N. Ba, K. Ekau, W. Kantoussan, J. Fall, M. Brehmer, Patrice Diouf, M. Brehmer, Patrice (ed.) Diogoul, N. (collab.) Zenk, C. (collab.) Vareilles, M. de (collab.) Keenlyside, N. (collab.) Nascimento, J.M. (collab.) Ramos, V. M. (collab.) Sow, B.A. (collab.) Fock, H. (collab.) Schmidt, J. (collab.) Ekau, W. (collab.) Mbaye, A. (collab.) Fall. A. (collab.) Monteiro, I. (collab.) Kouassi, A.M. (collab.) Silva, O. (collab.) Brochier, Timothée (collab.) Sall. M. (collab.) Mayif, M. (collab.) Koné, V. (collab.) Gorgues, Thomas (collab.) Ferreira Santos, C. (collab.) Bamy, I.L. (collab.) Barry, I. (collab.) Sidibe, M. (collab.) Diadhou, H. (collab.) AFRIQUE DE L'OUEST SENEGAL ATLANTIQUE MEDITERRANEE 2019 text/pdf http://www.documentation.ird.fr/hor/fdi:010078265 EN eng SRFCCSRP IRD http://www.documentation.ird.fr/hor/fdi:010078265 oai:ird.fr:fdi:010078265 Balde B.S., Sow F.N., Ba K., Ekau W., Kantoussan J., Fall M., Brehmer Patrice, Diouf M. Sardinella aurita growth parameters variability under the balanced effects of climate change and fishing pressure [résumé]. In : Brehmer Patrice (ed.), Diogoul N. (collab.), Zenk C. (collab.), Vareilles M. de (collab.), Keenlyside N. (collab.), Nascimento J.M. (collab.), Ramos V. M. (collab.), Sow B.A. (collab.), Fock H. (collab.), Schmidt J. (collab.), Ekau W. (collab.), Mbaye A. (collab.), Fall. A. (collab.), Monteiro I. (collab.), Kouassi A.M. (collab.), Silva O. (collab.), Brochier Timothée (collab.), Sall. M. (collab.), Mayif M. (collab.), Koné V. (collab.), Gorgues Thomas (collab.), Ferreira Santos C. (collab.), Bamy I.L. (collab.), Barry I. (collab.), Sidibe M. (collab.), Diadhou H. (collab.) International conference ICAWA 2017 and 2018 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters. [s.l.] : SRFC/CSRP IRD, 2019, p. 124. ICAWA : International Conference AWA, 5., Lanzarote (ESP), 2018/04/17-20 text 2019 ftird 2020-08-21T06:48:17Z Sardinella aurita is an overexploited small pelagic fish and a key species in Senegal at socioeconomics level, nevertheless the growth parameters which is a good indicator of fish stressors, have not been updated since 30 years. In this work, we analysed S. aurita (n = 32 300) age and growth in Senegal taking into account the tropical seasonality. Growth parameters are then compared with those previously obtained in the literature on the same geographical area (since 60 to 34 years) and more widely in different locations in tropical North Atlantic and Mediterranean Sea. The results show a significant difference of growth parameters in Senegal since thirty years, indeed growth of S. aurita became slower and its maximum size has significantly decreased. The comparison of S. aurita variability in growth performance reported in Mauritania-Senegal coast, as well as in Mediterranean Sea and Eastern/Western Atlantic Ocean reveals a significant influence of environmental parameters and/or the level of exploitation. In one hand in tropical Atlantic, S. aurita growth in Eastern Central is similar to the one reported in Western Central, while S. aurita growth is rather slow in Mediterranean Sea where, vs tropical Atlantic, Sea temperature and prey availability are lower. On the other hand, in the Atlantic Western Central, where the fishing pressure on the stock is lower over the last decade vs Atlantic Eastern Central, an increase in asymptotic length is observed, while in the Mediterranean Sea and Atlantic Eastern Central, where the fishing pressure is higher, the asymptotic length has drastically decreased. We assume that the fishing pressure and the climate change, or a combination of both, have an effect on the biological parameters of S. aurita. Text North Atlantic IRD (Institute de recherche pour le développement): Horizon |