Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons
Age and total length (LT) data from a 11 year monitoring of the[i] Anguilla anguilla[/i] eel population of the Camargue lagoons (Rhoˆ ne delta, southern France) were collected for glass, yellow and silver eels. Three distinct models were calibrated to describe the growth process of undifferentiated...
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ftunivnantes:oai:HAL:hal-01389055v1 2023-05-15T13:26:53+02:00 Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons Melia, Paco Bevacqua, Danièle Crivelli, Alain Jean de Leo, Giulio Alessandro Panfili, Jacques Gatto, Marino Dipartimento di Elettronica e Informazione Università degli studi di Parma = University of Parma (UNIPR) Dipartimento di Scienze Ambientali Station Biologique de la Tour du Valat Institut de Recherche pour le Développement (IRD Nouvelle-Calédonie ) Politecnico di Milano Milan (POLIMI) 2006 https://hal.archives-ouvertes.fr/hal-01389055 https://doi.org/10.1111/j.1095-8649.2006.00975.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8649.2006.00975.x hal-01389055 https://hal.archives-ouvertes.fr/hal-01389055 doi:10.1111/j.1095-8649.2006.00975.x PRODINRA: 369552 WOS: 000235695700016 ISSN: 0022-1112 EISSN: 1095-8649 Journal of Fish Biology https://hal.archives-ouvertes.fr/hal-01389055 Journal of Fish Biology, 2006, 68, pp.876-890. ⟨10.1111/j.1095-8649.2006.00975.x⟩ age and size-structured demography anguilla anguilla body growth eel [SDV.BA]Life Sciences [q-bio]/Animal biology info:eu-repo/semantics/article Journal articles 2006 ftunivnantes https://doi.org/10.1111/j.1095-8649.2006.00975.x 2022-12-07T02:28:08Z Age and total length (LT) data from a 11 year monitoring of the[i] Anguilla anguilla[/i] eel population of the Camargue lagoons (Rhoˆ ne delta, southern France) were collected for glass, yellow and silver eels. Three distinct models were calibrated to describe the growth process of undifferentiated eels, females and males, respectively. Uncertainty of parameter estimates was evaluated by bootstrapping. Females were characterized by larger asymptotic body size (LT) than males (580 _ 50 v. 388 _ 13 mm) and faster growth, whilst the Brody growth coefficient was larger for males than for females (means _ S.D. 3_00 10_3 _ 1_68 10_3 v. 1_73 10_3 _ 0_50 10_3). Sexual differentiation was estimated to begin at 204 _ 38 mm mean _ S.D., i.e. at the end of the second year in the lagoons, well before the LT at which macroscopic differentiation became possible (c. 300 mm). Males probably leave the lagoon or die (due to either natural or fishing mortality) within the first 3 years, whilst females can remain up to 5 years. Sexual differentiation and maturation have a major role in shaping the LT structure of the population. The LT and mass (M) data were fitted by allometric curves M ¼ aLT _ b_. The calibration of distinct curves for data from different years indicated that the allometric coefficient a was subject to wider interannual fluctuations than the allometric exponent b. A negative correlation linked the average LT and the allometric exponent (r ¼ _0_58, P < 0_01). Article in Journal/Newspaper Anguilla anguilla Université de Nantes: HAL-UNIV-NANTES |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
age and size-structured demography anguilla anguilla body growth eel [SDV.BA]Life Sciences [q-bio]/Animal biology |
spellingShingle |
age and size-structured demography anguilla anguilla body growth eel [SDV.BA]Life Sciences [q-bio]/Animal biology Melia, Paco Bevacqua, Danièle Crivelli, Alain Jean de Leo, Giulio Alessandro Panfili, Jacques Gatto, Marino Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons |
topic_facet |
age and size-structured demography anguilla anguilla body growth eel [SDV.BA]Life Sciences [q-bio]/Animal biology |
description |
Age and total length (LT) data from a 11 year monitoring of the[i] Anguilla anguilla[/i] eel population of the Camargue lagoons (Rhoˆ ne delta, southern France) were collected for glass, yellow and silver eels. Three distinct models were calibrated to describe the growth process of undifferentiated eels, females and males, respectively. Uncertainty of parameter estimates was evaluated by bootstrapping. Females were characterized by larger asymptotic body size (LT) than males (580 _ 50 v. 388 _ 13 mm) and faster growth, whilst the Brody growth coefficient was larger for males than for females (means _ S.D. 3_00 10_3 _ 1_68 10_3 v. 1_73 10_3 _ 0_50 10_3). Sexual differentiation was estimated to begin at 204 _ 38 mm mean _ S.D., i.e. at the end of the second year in the lagoons, well before the LT at which macroscopic differentiation became possible (c. 300 mm). Males probably leave the lagoon or die (due to either natural or fishing mortality) within the first 3 years, whilst females can remain up to 5 years. Sexual differentiation and maturation have a major role in shaping the LT structure of the population. The LT and mass (M) data were fitted by allometric curves M ¼ aLT _ b_. The calibration of distinct curves for data from different years indicated that the allometric coefficient a was subject to wider interannual fluctuations than the allometric exponent b. A negative correlation linked the average LT and the allometric exponent (r ¼ _0_58, P < 0_01). |
author2 |
Dipartimento di Elettronica e Informazione Università degli studi di Parma = University of Parma (UNIPR) Dipartimento di Scienze Ambientali Station Biologique de la Tour du Valat Institut de Recherche pour le Développement (IRD Nouvelle-Calédonie ) Politecnico di Milano Milan (POLIMI) |
format |
Article in Journal/Newspaper |
author |
Melia, Paco Bevacqua, Danièle Crivelli, Alain Jean de Leo, Giulio Alessandro Panfili, Jacques Gatto, Marino |
author_facet |
Melia, Paco Bevacqua, Danièle Crivelli, Alain Jean de Leo, Giulio Alessandro Panfili, Jacques Gatto, Marino |
author_sort |
Melia, Paco |
title |
Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons |
title_short |
Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons |
title_full |
Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons |
title_fullStr |
Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons |
title_full_unstemmed |
Age and growth of the European eel [i]Anguilla anguilla[/i] in the Camargue lagoons |
title_sort |
age and growth of the european eel [i]anguilla anguilla[/i] in the camargue lagoons |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.archives-ouvertes.fr/hal-01389055 https://doi.org/10.1111/j.1095-8649.2006.00975.x |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0022-1112 EISSN: 1095-8649 Journal of Fish Biology https://hal.archives-ouvertes.fr/hal-01389055 Journal of Fish Biology, 2006, 68, pp.876-890. ⟨10.1111/j.1095-8649.2006.00975.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8649.2006.00975.x hal-01389055 https://hal.archives-ouvertes.fr/hal-01389055 doi:10.1111/j.1095-8649.2006.00975.x PRODINRA: 369552 WOS: 000235695700016 |
op_doi |
https://doi.org/10.1111/j.1095-8649.2006.00975.x |
_version_ |
1766395121282056192 |