Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries
International audience The life history strategies of fishes can be defined by specific combinations of demographic traits that influence species performances depending on environmental features. Hence, the constraints imposed by the local conditions restrict the range of successful strategies by ex...
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ftccsdartic:oai:HAL:hal-02606120v1 2023-05-15T17:38:33+02:00 Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries Teichert, Nils Pasquaud, Stéphanie Borja, A. Chust, G. Uriarte, A. Lepage, Mario Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) UNIVERSIDAD DE LISBOA MARE LISBOA PRT Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) AZTI MARINE RESEARCH DIVISION PASAIA ESP 2017 https://hal.inrae.fr/hal-02606120 en eng HAL CCSD Elsevier hal-02606120 https://hal.inrae.fr/hal-02606120 IRSTEA: PUB00054432 ISSN: 0272-7714 EISSN: 1096-0015 Estuarine, Coastal and Shelf Science https://hal.inrae.fr/hal-02606120 Estuarine, Coastal and Shelf Science, Elsevier, 2017, 188, pp.18-26 [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2017 ftccsdartic 2021-11-07T01:08:24Z International audience The life history strategies of fishes can be defined by specific combinations of demographic traits that influence species performances depending on environmental features. Hence, the constraints imposed by the local conditions restrict the range of successful strategies by excluding species poorly adapted. In the present study, we compared the demographic strategies of fish caught in 47 estuaries of the North East Atlantic coast, aiming to determine the specific attributes of resident species and test for changes in trait associations along the environmental gradients. Eight demographic traits were considered to project our findings within a conceptual triangular model, composed on three endpoint strategies: (i) periodic (large size, long generation time, high fecundity); (ii) opportunistic (small size, short generation time, high reproductive effort); and (iii) equilibrium (low fecundity, large egg size, parental care). We demonstrated that various life history strategies co-exist in estuaries, but equilibrium species were scarce and restricted to euhaline open-water. Resident species form a specialised assemblage adapted to high spatiotemporal variability of estuarine conditions, i.e. opportunistic attributes associated with parental care. Even with these singular attributes, our findings revealed changes in distribution of resident species across the estuarine gradients linked to their life history traits. Among other patterns, the diversity of life history strategies significantly decreased from euhaline to oligohaline areas and along gradient of human disturbances. These trends were associated with a convergence of species traits to- ward short generation times, suggesting that long-lived species with late maturation are more severely impacted by disturbance and environmental stress. Article in Journal/Newspaper North East Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Teichert, Nils Pasquaud, Stéphanie Borja, A. Chust, G. Uriarte, A. Lepage, Mario Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience The life history strategies of fishes can be defined by specific combinations of demographic traits that influence species performances depending on environmental features. Hence, the constraints imposed by the local conditions restrict the range of successful strategies by excluding species poorly adapted. In the present study, we compared the demographic strategies of fish caught in 47 estuaries of the North East Atlantic coast, aiming to determine the specific attributes of resident species and test for changes in trait associations along the environmental gradients. Eight demographic traits were considered to project our findings within a conceptual triangular model, composed on three endpoint strategies: (i) periodic (large size, long generation time, high fecundity); (ii) opportunistic (small size, short generation time, high reproductive effort); and (iii) equilibrium (low fecundity, large egg size, parental care). We demonstrated that various life history strategies co-exist in estuaries, but equilibrium species were scarce and restricted to euhaline open-water. Resident species form a specialised assemblage adapted to high spatiotemporal variability of estuarine conditions, i.e. opportunistic attributes associated with parental care. Even with these singular attributes, our findings revealed changes in distribution of resident species across the estuarine gradients linked to their life history traits. Among other patterns, the diversity of life history strategies significantly decreased from euhaline to oligohaline areas and along gradient of human disturbances. These trends were associated with a convergence of species traits to- ward short generation times, suggesting that long-lived species with late maturation are more severely impacted by disturbance and environmental stress. |
author2 |
Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) UNIVERSIDAD DE LISBOA MARE LISBOA PRT Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) AZTI MARINE RESEARCH DIVISION PASAIA ESP |
format |
Article in Journal/Newspaper |
author |
Teichert, Nils Pasquaud, Stéphanie Borja, A. Chust, G. Uriarte, A. Lepage, Mario |
author_facet |
Teichert, Nils Pasquaud, Stéphanie Borja, A. Chust, G. Uriarte, A. Lepage, Mario |
author_sort |
Teichert, Nils |
title |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_short |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_full |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_fullStr |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_full_unstemmed |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_sort |
living under stressful conditions: fish life history strategies across environmental gradients in estuaries |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.inrae.fr/hal-02606120 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
ISSN: 0272-7714 EISSN: 1096-0015 Estuarine, Coastal and Shelf Science https://hal.inrae.fr/hal-02606120 Estuarine, Coastal and Shelf Science, Elsevier, 2017, 188, pp.18-26 |
op_relation |
hal-02606120 https://hal.inrae.fr/hal-02606120 IRSTEA: PUB00054432 |
_version_ |
1766139049640198144 |