@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} } @article {3722, title = {Amphidromy and marine larval phase of ancestral Gobioids Rhyacichthys guilberti and Protogobius attiti (Teleostei: Rhyacichthyidae).}, journal = {Marine and Freshwater Research}, volume = {65}, year = {2014}, pages = {776{\textendash}783}, abstract = {

Even if amphidromous fish species contribute most to the diversity of fish communities in the tropical insular
rivers, their biological cycle remain poorly known. For the first time, the otolith elemental composition and microstructure
of two ancestral gobioids, Rhyacichthys guilberti and Protogobius attiti, were investigated to describe their biological
cycle and pelagic larval duration (PLD). The otolith analysis using a femtosecond laser ablation coupled to an inductively
coupled plasma{\textendash}mass spectrometer (fs-LA-ICP-MS) revealed an amphidromous life history for R. guilberti and it
suggested a progressive habitat shift from a marine habitat to a freshwater environment for P. attiti. For the first time, an
endemic species, P. attiti, showed longer and more variable PLD (55.213.5 days) than did a widespread one
(R. guilberti: ,30 days). These results need to be confirmed by analysing more samples but suggest that factors other
than the PLD control endemism and dispersal processes. In association with this first description of the biological cycle for
both species, such an approach is a prerequisite for the management and conservation of both patrimonial species.

}, keywords = {diadromy, freshwater gobies, otolith microchemistry, tropical islands.}, author = {H{\'e}l{\`e}ne Tabouret and Tomadin, Marina and Taillebois, Laura and Iida, Midori and Clara Lord and P{\'e}cheyran, C and Philippe Keith} }