Marie-Laure Acolas

Marie-Laure Acolas
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Department of Waters

PhD

About

41
Publications
6,002
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687
Citations
Citations since 2016
19 Research Items
404 Citations
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20162017201820192020202120220204060
Introduction
Marie-Laure does research in Fish Ecology and Conservation Biology. My research is mostly focus on conservation of endangered species, migration behavior of anadromous fishes, aquaculture practices within the frame of stocking program and influence of environmental factors on fish life history traits.

Publications

Publications (41)
Article
Full-text available
Increasing knowledge on distribution and habitat selection of coastal fish species is essential for the management of marine environments, and can be provided through the use of Species Distribution Models (SDM). Opportunistic and participatory data such as recreational or commercial bycatch data can provide precious information at large scale and...
Article
Full-text available
The ecology of the young stages of allis shad Alosa alosa is poorly documented, although they can be exposed to many pressures during their freshwater phase and their downstream migration. When passing through systems such as the Gironde-Garonne-Dordogne watershed (GGD, SW France), they can be subjected to high temperatures and low levels of oxygen...
Article
Full-text available
The European sturgeon, Acipenser sturio, is a highly endangered species that almost disappeared in the last decades. Thanks to yearly restocking of the population, this species is still found in the Gironde estuary (France), where juveniles grow during several years before leaving to the ocean. The aims of this study were to evaluate the pressure e...
Article
Full-text available
The use of genetic information is crucial in conservation programs for the establishment of breeding plans and for the evaluation of restocking success. Short tandem repeats (STRs) have been the most widely used molecular markers in such programs, but next‐generation sequencing approaches have prompted the transition to genome‐wide markers such as...
Article
Working towards a future Rhine Sturgeon Action Plan the outmigration pathways of stocked juvenile European sturgeon (Acipenser sturio L., 1758) were studied in the River Rhine in 2012 and 2015 using the NEDAP Trail system. A total of 87 sturgeon of 3 to 5 years old (n = 43 in 2012, n = 44 in 2015) were implanted with transponders and released in Ma...
Chapter
To assess the escapement of A. baerii in the French catchments, we propose in this chapter to gather different sources of data related to (1) the escapes related in the French national press between 1990 and 2015, (2) the gray literature and scientific articles that were produced following the largely mediatized escape of thousands of A. baerii in...
Book
To assess the escapement of A. baerii in the French catchments, we propose in this chapter to gather different sources of data related to (1) the escapes related in the French national press between 1990 and 2015, (2) the gray literature and scientific articles that were produced following the largely mediatized escape of thousands of A. baerii in...
Article
Full-text available
Stocking is becoming an increasingly important conservation tool as biodiversity trends continue to decline. The European sturgeon Acipenser sturio is a Critically Endangered species subject to a stocking program in which a better understanding of its life history and stocking achievement is crucial for its conservation. In this study, acoustic tel...
Article
Post release habitat selection was studied on forty eight 10-month-old hatchery reared European sturgeon (mean fork length 31.0 cm ± 3.0) in the tidal part of their native catchment using acoustic telemetry. Most of the fish reached the oligohaline estuary within 2–4 days (70 km downstream the release site). Seventy four percent of the fish migrate...
Article
Full-text available
The European sturgeon is critically endangered and the French ex-situ conservation approach involves developing a captive stock to produce offspring for release to boost natural populations. The purpose of our study was to assess the effects of rearing environment before stocking on the survival, growth, and behavior of three-month-old sturgeons fr...
Article
Full-text available
The only remaining population of the critically endangered European sturgeon, Acipenser sturio, is located in the Gironde basin (France). A restoration program initiated 20 years ago has allowed more than one and a half million individuals to be stocked. Effective monitoring of this population is a key prerequisite in ensuring the sustainability of...
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
The objective of this paper was to understand trends in modelling over time within sturgeon research and the effects of modelling applications on the scientific community using a bibliometric approach on articles from the ISI Web of Knowledge online database between 1996 and 2012. The results indicate an increasing contribution of modelling within...
Conference Paper
Recovery programs for endangered species are long term challenges. Decision support and recovery facilitation generally require scientific and technical expertise to be implemented. These programs ideally reflect a system with interactions among various stakeholders (resource users, agencies, management bodies, conservationists, scientists) involve...
Article
Full-text available
http://link.springer.com/article/10.1007%2Fs11852-013-0281-0 The water quality of the River Rhine has improved and might again suit the critically endangered European sturgeon A. sturio L, which was extirpated from the river by 1950. This study describes the tracking of 43 juvenile hatchery-reared A. sturio, in the Dutch part of the Lower Rhine an...
Article
Acoustic telemetry was used to quantify the behaviour of 94 hatchery-reared European sturgeon (27–38 cm in fork length) released in their native watershed. The study took place between July and December 2008 and between April and May 2009 in the tidal part of the Gironde system (south-west France) from freshwater to mesohaline estuary. Survival rat...
Article
Full-text available
In a population exhibiting partial migration (i.e. migration and residency tactics occur in the same population), the mechanisms underlying the tactical choice are still unclear. Empirical studies have highlighted a variety of factors that could influence the coexistence of resident and migratory individuals, with growth and body size considered to...
Article
This section focuses on future research that should be carried out to contribute to the success of the sturgeon restoration programme. We consider both A. sturio and A. oxyrinchus data to support proposals for future experiments. Three main research topics are proposed: young-of-year behaviour and habitat use in rivers, downstream migration pattern...
Chapter
Current knowledge of the biological cycle and migration behaviour is detailed in this chapter. Most of the data come from the Gironde population, and a diagram of the biological cycle is proposed. Spawning occurs in freshwater, and juveniles progressively migrate to the estuary and then to the sea to grow. Early life history in rivers, juvenile lif...
Article
This section deals with the monitoring techniques that have been tested and used in the context of the Gironde population dynamic survey. Very recent methods and results are presented as well as earlier data. Monitoring is currently used mainly to estimate the efficiency of stocking (survival and growth parameters) and spatial and temporal distribu...
Book
This section deals with the monitoring techniques that have been tested and used in the context of the Gironde population dynamic survey. Very recent methods and results are presented as well as earlier data. Monitoring is currently used mainly to estimate the efficiency of stocking (survival and growth parameters) and spatial and temporal distribu...
Book
This section focuses on future research that should be carried out to contribute to the success of the sturgeon restoration programme. We consider both A. sturio and A. oxyrinchus data to support proposals for future experiments. Three main research topics are proposed: young-of-year behaviour and habitat use in rivers, downstream migration pattern...
Book
Current knowledge of the biological cycle and migration behaviour is detailed in this chapter. Most of the data come from the Gironde population, and a diagram of the biological cycle is proposed. Spawning occurs in freshwater, and juveniles progressively migrate to the estuary and then to the sea to grow. Early life history in rivers, juvenile lif...
Article
Full-text available
The need for cold, well-oxygenated waters significantly reduces the habitat available for lake trout (Salvelinus namaycush) during stratification of small temperate lakes. We examined the spatial and pelagic distribution of lake trout over two consecutive summers and winters and tested whether winter increased habitat availability and access to lit...
Article
Full-text available
Most fish cannot hear frequencies above 3 kHz, but a few species belonging to the subfamily Alosinae (family Clupeidae) can detect intense ultrasound. The response of adult specimens of the European allis shad (Alosa alosa) to sinusoidal ultrasonic pulses at 70 and 120 kHz is tested. The fish showed an intensity-graded response to the ultrasonic pu...
Article
Full-text available
Abstract –  Many populations of vertebrates display alternative reproductive strategies involving delays in maturation processes and migrations to more productive habitats. Notably for females, migratory patterns and diet could influence reproductive traits such as ova size and number. To test this hypothesis, we targeted anadromous and freshwater-...
Article
Full-text available
A laboratory study was conducted to assess the effect of PIT tagging on survival and growth of young-of-the-year brown trout (Salmo trutta) and evaluate PIT tag loss as a function of body size at tagging. Transponders (11.5 mm long and 2.1 mm in diameter) were injected into the peritoneal cavity of fish ranging from 41 to 70 mm fork length (FL) usi...
Article
The characteristics and activity of adult allis shad [Alosa alosa (L.)] were analysed during the last part of their upstream migration in the L'Aulne, a small river in Brittany, and during reproduction on a unique spawning ground downstream of an insurmountable dam. The age of the spawners ranged from three to seven years, females being larger and...
Article
Acoustic telemetry was used to record diel movement and habitat utilization of the salema (Sarpa salpa) (Teleostei: Sparidae) during three consecutive summers from 2000 to 2002 in the Calvi and Achiarina bays of Corsica in the Mediterranean Sea. A total of 18 fish was equipped with acoustic transmitters inserted in the body cavity, 13 were tracked...
Article
We provide a detailed description of the migratory and reproductive behaviour of allis shad (Alosa alosa L.), a species that is in decline in Europe. Adult swimming behaviour during the last part of upstream migration and on a spawning ground downstream of an insurmountable dam was studied in detail and its main features identified. "characterized"...

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Projects

Projects (4)
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.
Project
Everything is in the name ! The European sturgeon is critically endangered and we aim at restoring its last population.