@article {9085,
	title = {Biogeographical snapshot of life-history traits of European silver eels: insights from otolith microchemistry},
	journal = {Aquatic Sciences},
	volume = {85},
	year = {2023},
	month = {Jan-04-2023},
	abstract = {Life-history traits of eels display a high level of phenotypic plasticity in response to large-scale biogeographical drivers, as well as local conditions encountered during the continental phase. Here, we provided a biogeographical snapshot of the variability of life-history traits of eels (Anguilla anguilla), across a large proportion of their natural distribution range. Silver eels (n = 99) were collected across eleven European catchments to investigate how life-history traits vary along geographical and saline habitats, as it was inferred from the Sr:Ca ratio in otoliths. Among 13 life-history traits tested, 3 of them such as total length, body or liver weight were related to geographical coordinates. Overall, eels grow faster in southern Europe and migrate earlier suggesting that the silvering process is related to the local growth conditions more than fish age. The salinity profiles revealed by the otoliths{\textquoteright} Sr:Ca ratios indicate that eels with a brackish life-history generally grow faster, reach larger size-at-age, and have a better condition than eels living in freshwater. This observation associated with the lower abundance of the sanguivorous swimbladder nematode, Anguillicola crassus, confirms the importance of brackish areas for sustaining the eel production. A large proportion of the observed variation of life-history traits remained unexplained by the biogeographical trends and salinity condition, which suggests that other drivers act at the catchment scale.<br>
},
	keywords = {Anguilla anguilla, Biogeography, Brackish habitat, otolith, phenotypic plasticity, Sr:Ca ratio},
	issn = {1015-1621},
	doi = {10.1007/s00027-023-00940-4},
	url = {https://link.springer.com/10.1007/s00027-023-00940-4},
	author = {Teichert, Nils and Bourillon, Bastien and Suzuki, Kyoko and Acou, Anthony and Alexandre Carpentier and Kuroki, Mari and Righton, David and Thomas Trancart and Virag, Laure-Sarah and Walker, Alan and Otake, Tsuguo and Eric Feunteun}
}
@article {8599,
	title = {A multi-approach study to reveal eel life-history traits in an obstructed catchment before dam removal},
	journal = {Hydrobiologia},
	year = {2022},
	month = {Sep-03-2022},
	abstract = {River fragmentation is expected to impact not only movement patterns and distribution of eels within catchment, but also their life-history traits. Here, we used otolith multi-elemental signatures to reconstruct life sequences of European silver eels within an obstructed catchment, just before the removal of hydropower dams. Beyond providing an initial state, we hypothesized that otolith signatures can provide crucial information on the way eels use the watershed. Indeed, their spatial distribution is expected to shape life-history traits, including condition coefficient, trophic level, growth rate, or infection by metazoan parasites. While Sr:Ca and Ba:Ca ratios were complementary in tracing fish movements between freshwater and estuary, the Ba:Ca variations allowed to discriminate three freshwater sectors. The eels assigned to the midstream sector were more mobile and exhibited lower growth rates, probably in response to higher competition at the vicinity of dams. While most eels are currently produced by downstream and midstream sectors, eels assigned to upper reaches of connected tributaries generally display higher richness in native parasite and higher body condition and lipid reserve, known to promote the success of migration and reproduction. In the near future, the dam removals will represent an outstanding experimental framework for evaluating impacts of catchment reconnection.},
	keywords = {LA-ICP-MS, life-history trait, metazoan parasites, otolith microchemistry, phenotypic plasticity, river barrier},
	issn = {0018-8158},
	doi = {10.1007/s10750-022-04833-9},
	url = {https://link.springer.com/10.1007/s10750-022-04833-9},
	author = {Teichert, Nils and Liz{\'e}, Anne and Tabouret, H{\'e}l{\`e}ne and G{\'e}rard, Claudia and Bareille, Gilles and Acou, Anthony and Alexandre Carpentier and Trancart, Thomas and Virag, Laure-Sarah and Robin, Emma and Druet, Morgan and Prod{\textquoteright}Homme, Jordan and Eric Feunteun}
}
