@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 {6014,
	title = {Contrasting biodiversity of eel larvae across the central Indian Ocean subtropical gyre},
	journal = {Deep Sea Research Part II: Tropical Studies in Oceanography},
	volume = {161},
	year = {2019},
	pages = {120{\textendash}131},
	abstract = {The unique semi-enclosed Indian Ocean basin includes large Mascarene\&nbsp;Plateau\&nbsp;banks, offshore\&nbsp;coral-reef\&nbsp;islands, seasonal equatorial current jets, and cross-basin westward South Equatorial Current (SEC) flow, making it interesting for studying long larval-duration eel larvae (leptocephali) and regional eel biodiversity. Three surveys for\&nbsp;leptocephali\&nbsp;(in 2003, 2006, 2010) included sampling west of the Mascarene Plateau (west), a major survey and other stations off Sumatra and Java (east), and 2 cross-basin transects across the SEC. The highest numbers of leptocephali species were observed along Sumatra (2003: ~143 species; 2006: 72 species) and south of Java (2010: 69), with intermediate numbers being collected in the western Indian Ocean (2006: 71; 2010: 53) compared to low numbers in the hydrographically variable offshore zones (2006, 2010: 3{\textendash}27). The larger\&nbsp;continental shelf\&nbsp;areas along Sumatra including the Mentawai Islands provide more coral reef and other habitats for species such as congrid, muraenid, ophichthid, and chlopsid eels compared to the Mascarene Plateau banks. Some larvae in these areas get transported offshore, but the majority of offshore larvae were of Nemichthyidae and Serrivomeridae mesopelagic eels that were spawning across the basin. Habitat differences between the southern Mascarene Plateau and Sumatra and southern Indonesia along the edge of the high biodiversity Coral Triangle likely explain the higher biodiversity of eel larvae observed along the western side of the basin, which for the Congridae and Ophichthidae included more species than observed previously within the central Indonesian Seas. In addition to local spawning, seasonal currents likely transport larger larvae towards Sumatra from the north or west and larvae may enter the basin from the Indonesian\&nbsp;Throughflow\&nbsp;in the east, but it is unknown if equatorial jets or the SEC can transport larvae across the whole basin.},
	doi = {doi.org/10.1016/j.dsr2.2018.02.012},
	url = {https://www.sciencedirect.com/science/article/pii/S0967064517304393},
	author = {Miller, Michael J and Wouthuyzen, Sam and Eric Feunteun and Aoyama, Jun and Watanabe, Shun and Syahailatua, Augy and Kuroki, Mari and Robinet, Tony and Hagihara, Seishi and Otake, Tsuguo and others}
}
