@article {9640,
	title = {Accounting for variability in life-history traits for the definition of amphidromous goby fry fisheries closure periods},
	journal = {Cybium},
	volume = {47},
	year = {2023},
	month = {10/2023},
	pages = {391-399},
	abstract = {Amphidromous goby fry (post-larvae and young juveniles) are traditionally fished when they arrive in rivers after their larval development at sea. In Reunion Island (Indian Ocean) two species of amphidromous goby are mainly targeted by the fisheries: the endemic\&nbsp;Cotylopus acutipinnis\&nbsp;and the cosmopolitan\&nbsp;Sicyopterus lagocephalus. Despite the lack of quantitative data on these fisheries, their impact on populations\&nbsp;is expected to be important because the catches can represent several tonnes per year. Consequently, fishery regulation changes have been proposed that increase the duration of the existing fisheries closure period of two weeks in March. We developed an approach to identify key periods for fisheries closure, including assessment of the proposed management scenario and several alternative protection scenarios, based on the maximization of fry abundance and on the variability of four life-history traits: (i) fry size and (ii) age at arrival in rivers, (iii) the time the juveniles spend in river before maturation and (iv) their migration behaviour. This approach is in seeking to preserve a high level of phenotypic diversity, which is predicted to promote population resilience. We conducted a multiple-criteria decision analysis to rank 4096 alternatives of fisheries closure periods, ranging from zero to 12 months, based on their propensity to maintain fry abundance and life history trait diversity. Finally, according to the type of fisheries closure period (discontinuous or continuous) and the proportion of annual abundance and variability of life-history traits preserved during the period (50\% or 75\%), we propose four different fisheries closures lasting from six to nine months.},
	keywords = {amphidromy, Bichiques, Conservation, diadromy, Indian Ocean, Management, recruitment},
	doi = {10.26028/cybium/2023-018},
	url = {https://sfi-cybium.fr/fr/accounting-variability-life-history-traits-definition-amphidromous-goby-fry-fisheries-closure},
	author = {Lagarde, Rapha{\"e}l and Valade, Pierre and Teichert, Nils}
}
@article {7397,
	title = {Structure of small tropical island freshwater fish and crustacean communities: A niche-or dispersal-based process?},
	journal = {Biotropica},
	year = {2020},
	month = {Jan-10-2021},
	abstract = {Determining the relative importance of niche- and dispersal-based processes in the structuring of animal communities is central in ecology. Freshwater fish and crustacean communities of small tropical islands can bring new insights for understanding these processes as all their species present a pelagic larval stage which gives them important dispersal capacities. Consequently, we hypothesized that dispersal-based process may be preponderant for structuring these communities from the regional to the local, that is, survey site, scales. Gradient forest analyses allowed us to model the effect of 12 environmental variables on freshwater taxa abundances in two southwestern Indian Ocean islands: Mayotte (26 taxa) and Reunion (21). A total of 153 surveys in Mayotte and 266 in Reunion were used for building the models. Despite the strong heterogeneity of environmental conditions between the two islands, the main factors structuring freshwater fish and crustacean communities in both islands were the elevation and the slope of the sites. The observed structure appeared more pronounced for predatory species than for primary consumers and omnivores. As predators generally have limited locomotor capacities, it is concluded that dispersal-based process structures these communities not only at large geographical scales but also at the intra-watershed scale, by limiting the inland penetration (or dispersion) of species in relation to their locomotor capacities. However, more knowledge concerning ecological traits and taxonomic status of many species is needed to confirm this assumption.<br>
},
	keywords = {abundances, diadromy, environmental gradients, Migration, taxonomic richness, western Indian Ocean},
	issn = {0006-3606},
	doi = {10.1111/btp.12865},
	url = {https://onlinelibrary.wiley.com/doi/10.1111/btp.12865},
	author = {Lagarde, Rapha{\"e}l and Teichert, Nils and Valade, Pierre and Ponton, Dominique}
}
