Françoise Daverat

Françoise Daverat
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Department of Waters

PhD & HDR

About

71
Publications
16,421
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1,341
Citations
Citations since 2017
28 Research Items
674 Citations
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2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140

Publications

Publications (71)
Article
Abstract: A cooperative effort gathered a large European length-at-age data set (N = 45,759, Lat. 36S61N Long. 10W27E) for Anguilla anguilla, covering one century. To assess the effect of global warming during the last century and habitat effects on growth, a model was fitted on the data representing the conditions met at the distribution area scal...
Article
Full-text available
European flounder Platichthys flesuslife history patterns were investigated in 3 basins along a latitudinal gradient (Minho, N Portugal; Gironde, SW France; Seine, N France). We used coupled Sr:Ca and Ba:Ca otolith signatures and microstructure to retrospectively determine habitats occupied by flounder during their life, including early larval onto...
Article
Full-text available
In fish, the gut microbiome plays a crucial role in homeostasis and health and is affected by several organic and inorganic environmental contaminants. Amphidromous fish are sentinel species, particularly exposed to these stressors. We used whole metagenome sequencing to characterize the gut microbiome of wild European eels (Anguilla anguilla) at a...
Article
Full-text available
We implement a newly developed framework, expressed as a mathematical model that we solve numerically, for understanding environmental sex determination in populations with consistent trends in abundance. Though broadly applicable, the analysis here focuses on the steadily declining North Atlantic eel populations. This enables us to show how the ec...
Article
Many anguillid eel species display facultative catadromy. Some eel spend their entire life cycle in marine coastal areas, but the geographical extent of this, especially at the extremes of their distributional ranges, is unknown. We analysed otolith Sr:Ca and Ba:Ca from yellow-stage European eel (Anguilla anguilla) sampled along the coast of Norway...
Article
The structure and connectivity of European seabass (Dicentrarchus labrax) populations remain poorly known and ecological evidence is missing to support the current delineation between the northern (southern North Sea, English Channel and Celtic Sea) and southern French stocks (Bay of Biscay). Adult spawning site fidelity and natal homing were analy...
Article
Full-text available
Alizarin detection in fish fins is extensively employed because it is easy to use. However, in eels, the eelGFP fluorescent protein may impede the detection of the fluorescent markers in the eel tissues. The study tests the effectiveness of three of the most up-to-date alizarin-detecting technologies on the living body and fins of European glass ee...
Article
Full-text available
The global lockdowns brought on by the COVID‐19 pandemic forced an immediate change in the way people moved about; namely, travel was slowed from a turbulent river to a trickle. In‐person meetings, often involving long‐distance flights, were either canceled, postponed, or shifted over to virtual modes. People who were unfamiliar with online meeting...
Article
The cover image is based on the Short Communication The potential contribution of small coastal streams to the conservation of declining and threatened diadromous fishes, especially the European eel by Gordon Copp et al., https://doi.org/10.1002/rra.3746. Photography by Alan Walker.
Article
Human-generated pressures are continuing to have a detrimental effect on diadro-mous fishes, resulting in legislative initiatives to conserve and manage these species. Field studies to inform these initiatives focus almost exclusively on larger marine, estuarine, and inland waters, neglecting the role of small coastal streams and tributaries in pop...
Article
Full-text available
Application of high-throughput sequencing technologies to microsatellite genotyping (SSRseq) has been shown to remove many of the limitations of electrophoresis-based methods and to refine inference of population genetic diversity and structure. We present here a streamlined SSRseq development workflow that includes microsatellite development, mult...
Article
Full-text available
Hybridization dynamics between co‐occurring species in environments where human‐mediated changes take place is important to quantify for furthering our understanding of human impacts on species evolution and for informing management. The allis shad Alosa alosa (Linnaeus, 1758) and twaite shad Alosa fallax (Lacépède, 1803), two clupeids sister speci...
Technical Report
Full-text available
The European flounder is a demersal species present along the NE-Atlantic Ocean, from Norway to Portugal, both in coastal and estuarine ecosystems (Nielsen, 1986). It is also present in the adjacent seas - Baltic, North, White, Mediterranean, and Black seas (Nielsen, 1986; Figure 5.2.2-1, Table 5.2.2-2). The species was introduced in North America...
Technical Report
Full-text available
Alosa alosa Allis shad (Alosa alosa) mature at 3–6 years of age and migrate many hundreds of kilometres upstream into their natal river to spawn. Spawning occurs during spring in the main river and major tributaries, in shallow waters, and over gravel substrate (Baglinière et al., 2003). The adults usually die after spawning. Allis shad larvae hatc...
Article
Full-text available
The specific stock composition and dispersion of anadromous fish species aggregations in the marine environment are poorly known, while they can play a major role in the metapopulation dynamics. Otolith microchemistry has proven to be a powerful tool to address natal origins of anadromous fish. We used archived otolith microchemistry to investigate...
Preprint
Application of high-throughput sequencing technologies to microsatellite genotyping (SSRseq) has been shown to remove many of the limitations of electrophoresis-based methods and to refine inference of population genetic diversity and structure. However, early proof of concept and species specific development studies resulted in dispersed informati...
Article
Full-text available
Many diadromous fishes such as salmon and eels that move between freshwater and the ocean have evolved semelparous reproductive strategies, but both groups display considerable plasticity in characteristics. Factors such as population density and growth, predation risk or reproduction cost have been found to influence timing of maturation. We inves...
Presentation
Full-text available
Allis shad, Alosa alosa (Linnaeus, 1758) and twaite shad, Alosa fallax (Lacépède, 1803), are a complex of two sister species of anadromous Clupeidae species, with A. alosa populations facing a great decline in the 2000s. Whereas the freshwater part of the biological cycle of these species was widely addressed (mainly for A. alosa), information abou...
Article
Full-text available
L’anguille européenne Anguilla anguilla est une espèce catadrome avec un cycle de vie complexe incluant des migrations entre la mer de Sargasses, l’Europe et l’Afrique du Nord. Du fait de sa baisse drastique de population depuis 30 ans, l’anguille est considérée aujourd’hui comme « en danger critique d’extinction ». Une des causes de ce déclin est...
Presentation
Full-text available
Allis shad, Alosa alosa (Linnaeus, 1758) and twaite shad, Alosa fallax (Lacépède, 1803), are a complex of two sister species of anadromous Clupeidae species, with A. alosa populations facing a great decline in the 2000s. Whereas the freshwater part of the biological cycle of these species was widely addressed (mainly for A. alosa), information abou...
Presentation
Full-text available
L’alose vraie, Alosa alosa (Linnaeus, 1758) et l’alose feinte, Alosa fallax (Lacépède, 1803), sont un complexe de deux espèces sœurs anadromes de Clupeidae, les populations d'alose vraie faisant face à un grand déclin dans les années 2000. Alors que la partie en eau douce du cycle biologique de ces espèces a été largement abordée (principalement po...
Article
Full-text available
Similar to many diadromous fish species, dramatic declines were observed for Allis shad, an anadromous Clupeidae, since the beginning of the 2000s. The knowledge of population and metapopulation dynamics is a key issue for the management of migratory species. Although homing behaviour is dominant in Allis shad, staying causes exchanges between popu...
Article
Full-text available
European eels (Anguilla anguilla) migrate between the southwestern Sargasso Sea and the European and Mediterranean coasts. In a recent paper in Current Biology, Naisbett-Jones et al. [1] claim to “provide the first evidence that they [eels] derive positional information from the Earth's magnetic field” and that this information guides their migrati...
Article
Full-text available
Fishways are built on obstacles to restore the connectivity between aquatic habitats. Our study investigated how species-specific fishways interact with interindividual trait differences among fish. We compared several groups of glass eels (Anguilla anguilla) climbing two types of fishways with those remaining below the water impoundments. We analy...
Article
Full-text available
Despite recent efforts to manage them more efficiently, estuaries are natural sinks for a wide range of metal contaminants, many of which accumulate at potentially toxic concentrations for fish populations, posing a threat to recruitment and stocks. While analysis of metal concentrations in soft tissue and water samples calls for continuous and lon...
Chapter
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Chapter
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Chapter
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Article
Full-text available
European eel (Anguilla anguilla) is a catadromous fish species that received substantial attention as its population has markedly declined in the last three decades. The possible causes of this decline include habitat fragmentation factors such as dams and weirs. In some cases, these obstacles are equipped with fish friendly passage devices that ma...
Book
Full-text available
https://www.crcpress.com/An-Introduction-to-Fish-Migration/Morais-Daverat/9781498718738
Book
Full-text available
Otoliths as tracers of fish migration. Analytical techniques and equipment used to infer fish migrations and movements. Collection and preparation of samples. Investigating fish migration: data treatment. Case studies.
Book
Methods to study the migratory behaviourr of fish can be divided in two categories: capture-dependent (based on sampling marked or unmarked fish) and capture-independent methods, such as visual or video observation, resistivity fish counters or hydroacoustics. In this chapter we focus only on capture-dependent methods using marked fish.
Book
Introduction, anadromous fishes: who are they? Why do they migrate? When do they migrate? How do they migrate? Insights on anadromous species conservation.
Article
Full-text available
European eel is a panmictic species, whose decline has been recorded since the last 20 years. Among human-induced environmental factors of decline, the impact of water dams during species migration is questioned. The main issue of this study was to pinpoint phenotypic traits that predisposed glass eels to successful passage by water barriers. The a...
Poster
Full-text available
Physical obstacles to upstream migration such as dams are a major impairment of natural colonisation and dispersion of eels. Dams and obstacles increase the energy demand of fish, even when they are equipped with fish friendly devices. Besides, local accumulation of eels below dams increase the mortality associated with predation. Obstacles may als...
Article
Full-text available
Understanding dispersal capacities for migratory species is crucial for their management. By coupling otolith microchemistry and microsatellite genetic analyses, we provided information on snapshot and long-term dispersal capacity of Allis shad (Alosa alosa), an anadromous clupeid in decline throughout its distribution range. The allocation of nata...
Article
Abstract European flounder (Platichthys flesus) is generally considered to be a marine euryhaline species. Most existing studies have focused on the brackish part of its life cycle. This is the first time that acoustic telemetry has been used to study the movements, home range, and habitat use of late-stage juvenile flounders (2 +, 3 +) in a freshw...
Article
Full-text available
Anguilla anguilla, A. japonica and A. rostrata are three largely distributed catadromous and semelparous species characterized by a long and passive oceanic larval drift between their marine spawning grounds and their nursery areas in continental waters. Their large and spatially heterogeneous environments combined with population panmixia and long...
Conference Paper
Full-text available
144th Annual Meeting of the American Fisheries Society EvEel: A Model to Explore the Role of Phenotypic Plasticity as an Adaptive Response of Three Temperate Eels (Anguilla anguilla, A. japonica and A. rostrata) to Spatially Structured Environments
Article
Full-text available
During watershed colonisation by catadromous species, two main phases have been identified: tidal estuary crossing and non-tidal river colonisa-tion. Fishes use selective tidal-stream transport (STST) during the first phase of this colonisation, and counter-current swimming during the sec-ond phase. Therefore, catadromous species have to achieve a...
Article
Full-text available
Although the average growth rate of European eel is known to be generally dependent on temperature and habitat at the population scale, large variation in growth among eels in a single river basin can also be widely observed. In this study, individual growth trajectories of female European eels in the Gironde River basin, France, were modeled with...
Article
Otolith elemental (Sr:Ca, Ba:Ca, Mn:Ca, Mg:Ca and Rb:Ca) and isotopic ((87) Sr:(86) Sr) profiles from several annual cohorts of juvenile Atlantic salmon Salmo salar were related to the physico-chemical characteristics (chemical signatures, flow rate, temperature and conductivity) of their natal rivers over an annual hydrological cycle. Only Sr:Ca,...
Article
Full-text available
We investigated the use of Sr:Ca, Ba:Ca, and 87Sr:86Sr ratios as natural tags for determining the natal origins of juvenile and adult Atlantic salmon (Salmo salar) from 12 tributaries in the Adour basin (southwestern France) and estimated homing on a tributary scale. Geochemical signatures from core regions of the otolith were also used to identify...
Article
Aiming at increasing the resolution of otolith tracers, we investigated the possibility to use Mn, Co, Zn, Rb, Cd, Sn, Ba, Sr, and Pb otolith composition to retrieve the movements of eels (Anguilla anguilla) in the lower Gironde watershed. Caging experiments were designed to validate the site specific otolith signatures. Individually identified eel...
Conference Paper
A new realization of the variation in continental habitat shift patterns of anguillid eels has been made possible by otolith microchemistry research. However, it is still unclear how habitat shifts of eels occur between freshwater and saline habitats and how they affect their continental life history. In this study, we investigated the effect of ha...
Article
Full-text available
We conducted a laboratory experiment to validate the relationship between the otolith strontium/calcium (Sr/Ca) ratio of Japanese eels (Anguilla japonica) and water Sr/Ca ratio when the ratio in water was changed. A linear and additive mixed modeling approach was used to assess otolith Sr/Ca ratio for elver-juvenile Japanese eels when ambient water...
Article
Full-text available
This study combines otolith trace element and genetic analyses to explore the origin of individuals when hatchery-reared fish are released into wild populations. We sampled 90 juvenile Atlantic salmon (Salmo salar) in four rivers in Normandy (France) and in the hatchery stock. Individuals were analyzed at six microsatellite markers and their otolit...
Article
Daverat F, Martin J, Fablet R, Pécheyran C. Colonisation tactics of three temperate catadromous species, eel Anguilla anguilla, mullet Liza ramada and flounder Plathychtys flesus, revealed by Bayesian multielemental otolith microchemistry approach. Ecology of Freshwater Fish 2011: 20: 42–51. © 2010 John Wiley & Sons A/S Abstract – The colonisation...
Article
Full-text available
Martin J, Daverat F, Pécheyran C, Als TD, Feunteun E, Réveillac E. An otolith microchemistry study of possible relationships between the origins of leptocephali of European eels in the Sargasso Sea and the continental destinations and relative migration success of glass eels. Ecology of Freshwater Fish 2010: 19: 627–637. © 2010 John Wiley & Sons A/...
Article
Full-text available
The reconstruction of individual life histories from chemical otolith measures is stated as an unsupervised signal-processing issue embedded in a Bayesian framework. This computational methodology was applied to a set of 192 European eel (Anguilla anguilla) otoliths. It provided a robust and unsupervised analysis of the individual chronologies of h...
Article
Full-text available
Habitat use patterns of 3 species of temperate eels, Anguilla anguilla, A. japonica and A. rostrata, were investigated using otolith strontium:calcium ratio life history transects. Published and unpublished data from 6 sites (Canada, United States, Sweden, France, Taiwan and Japan) sam- pled across the geographical range of each eel species were co...
Article
Full-text available
The patterns of habitat use and their relative proportions were investigated for 270 eels Anguilla anguilla sampled in coastal areas, the estuary and the river of the Gironde watershed, by measuring Sr and Ca concentrations in the otolith. Sr:Ca values outside the elver mark discriminated residence in the same habitat until capture (freshwater, est...
Article
Full-text available
To enable a relevant interpretation of otolith strontium : calcium (Sr/Ca) variations in terms of habitat shifts of eels, the Sr/Ca-salinity relationship in eel otoliths was validated. Downstream and upstream migrations of young eels were reproduced in the laboratory by transferring groups of fish every 2 months between aquaria filled with water co...
Thesis
Full-text available
Dans cette étude, les tactiques d'utilisation de l'habitat par les anguilles Anguilla anguilla ainsi que les proportions respectives de ces tactiques ont été étudiées en échantillonnant les poissons dans les fleuves, l'estuaire et la partie côtière du bassin versant de la Gironde, en mesurant les ratios strontium:calcium (Sr/Ca) dans leurs otolithe...
Article
Full-text available
By the means of microchemistry of otolith techniques, we intended to follow the movements of eel populations from the lower part of Gironde-Garonne- Dordogne watershed, through water masses of various salinity in order to both characterise the type of life strategy and evaluate the level of exchanges between fractions of population. Therefore, thir...
Article
Les mouvements des fractions de populations d'anguille du bas bassin versant Gironde-Garonne-Dordogne et de sa zone côtière au travers de masses d'eau de différentes salinités ont été étudiées au moyen d`une méthode de microchimie des otolithes. Cette étude avait pour but de caractériser des types d'histoire de vie des anguilles et d'évaluer l'ampl...

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Question (1)
Question
Who is interested by a large collection of gonad histological samples of germo alalunga et neothumus manopturus and mugil labrosus from 1967 to 1970 ?
all the references of locations and fish caracteristics available on the slides

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Projects (6)
Project
In a human-altered marine environment, fragmented and subjected to unprecedented climate change, planning sustainable strategies for development requires to understand the distribution of marine biodiversity and how its variations impact ecosystem functioning and the evolution of species. Functional Connectivity characterizes the migratory flows of organisms in the landscape. As such, it determines the ecological and evolutionary interdependency of populations, and ultimately the fate of species and ecosystems. Gathering effective knowledge on Marine Functional Connectivity (MFC) can therefore improve predictions of environmental change impacts and help refine management and conservation strategies for the Seas. This is challenging though, because marine ecosystems are particularly difficult to access and survey. Currently, >50 institutions investigate MFC in Europe, by using complementary methods from multiple research fields to describe the ecology and genetics of marine species. SEA-UNICORN aims at coordinating their research to unify the varied approaches to MFC and integrate them under a common conceptual and analytical framework for improved management of marine resources and ecosystems. For this, it will bring together a diverse group of scientists in order to collate existing MFC data, identify knowledge gaps, reduce overlap among disciplines, and devise common approaches to MFC. It will promote their interaction with connectivity theoreticians and ecosystem modelers, to facilitate the incorporation of MFC data into the projection models used to identify priorities for marine conservation. Lastly, it will forge strong working links between scientists, policy-makers and stakeholders to promote the integration of MFC knowledge into decision support tools for marine management and environmental policies.
Project
Diadromous fish are threatened by human activities and climate change. Their Atlantic distribution is changing, causing new socio-economic and ecological interactions among Atlantic Area territories. In this context, DiadES will enhance ecosystem services relevant to these transnational resources by laying down common rules for managing diadromous fish under present and future climatic conditions and promoting increased regional cooperation for the conservation and exploitation of these species.