F. Lefebvre
A5037160816- Turtle Biology and Conservation
- Marine animal studies overview
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Astronomical Observations and Instrumentation
- Amphibian and Reptile Biology
- Dark Matter and Cosmic Phenomena
- Animal Vocal Communication and Behavior
- Particle Detector Development and Performance
- Ichthyology and Marine Biology
- History and Developments in Astronomy
- Rabies epidemiology and control
- Avian ecology and behavior
- Atmospheric Ozone and Climate
- Neural Networks and Applications
- Calibration and Measurement Techniques
- Isotope Analysis in Ecology
- Genomics and Phylogenetic Studies
- Particle Accelerators and Free-Electron Lasers
- Phytoestrogen effects and research
- Evolutionary Algorithms and Applications
- Aquatic Invertebrate Ecology and Behavior
- Helminth infection and control
- Subterranean biodiversity and taxonomy
- Precipitation Measurement and Analysis
Centre Hospitalier Universitaire de Martinique
2025
ADIR Association
2020-2024
Centre Technique des Industries Mécaniques
2018-2024
Institut Pluridisciplinaire Hubert Curien
2018-2020
Centre National de la Recherche Scientifique
1985-2020
Université de Strasbourg
2018-2019
Natural History Museum
2009
Laboratoire d'Informatique de l'École Polytechnique
1995-1996
École Polytechnique
1996
Institut de Recherches sur la Catalyse et l'Environnement de Lyon
1991
The identification of sea turtle behaviours is a prerequisite to predicting the activities and time-budget these animals in their natural habitat over long term. However, this hampered by lack reliable methods that enable detection monitoring certain key such as feeding. This study proposes combined approach automatically identifies different free-ranging turtles through use animal-borne multi-sensor recorders (accelerometer, gyroscope time-depth recorder), validated video-recorder data. We...
Abstract Although it is commonly assumed that female sea turtles always return to the beach they hatched, pathways use during years preceding their first reproduction and natal origins are most often unknown, as case for juvenile green found in Martinique waters Caribbean. Given oceanic circulation of Guiana current flowing toward presence important nesting sites this species Suriname French Guiana, we may assume a large proportion originating from Suriname–French beaches. To confirm...
Accelerometers are becoming ever more important sensors in animal-attached technology, providing data that allow determination of body posture and movement thereby helping elucidate behaviour animals difficult to observe.We sought validate the identification sea turtle behaviours from accelerometer signals by deploying tags on carapace a juvenile loggerhead (Caretta caretta), an adult hawksbill (Eretmochelys imbricata) green (Chelonia mydas) at Aquarium La Rochelle. We recorded tri-axial...
We applied the simultaneous use of a subtractive method and two imaging techniques (secondary ion mass spectrometry electron microscopy after PATAg staining) to correlate distribution Ca2+ pectic substances in cell walls young flax plants. The calcium images were compared with structural images. This suggests that linkage within wall is mainly by bridges intercellular junctions most types cells under study (epidermis, subepidermis, fiber layer, endodermis) outer part (close cuticle)...
Marine herbivores face rapid changes in the coastal ecosystems where they forage. In Caribbean, recent and fast expansion of invasive phanerogam species Halophila stipulacea is threatening native seagrass ecosystems. So far, H. escaping most Caribbean herbivores, certainly because its introduction or lower nutritional value. We investigated impact invasion on fine-scale foraging habitat selection food resource immature green turtles at critical sites Les Anses d′Arlet, Martinique. The...
<title>Abstract</title> Incidental capture of non-target species poses a pervasive threat to many marine species, with sometimes devastating consequences for both fisheries and conservation efforts. Because the well-known importance vocalizations in cetaceans, acoustic deterrents have been extensively used these species. In contrast, communication sea turtles has considered negligible, this question largely unexplored. Addressing challenge therefore requires comprehensive understanding...
Incidental capture of non-target species poses a pervasive threat to many marine species, with sometimes devastating consequences for both fisheries and conservation efforts. Because the well-known importance vocalizations in cetaceans, acoustic deterrents have been extensively used these species. In contrast, communication sea turtles has considered negligible, this question largely unexplored. Addressing challenge therefore requires comprehensive understanding turtles' responses sensory...
The change of animal biometrics (body mass and body size) can reveal important information about their living environment as well determine the survival potential reproductive success individuals thus persistence populations. However, weighing like marine turtles in field presents logistical difficulties. In this context, estimating (BM) based on size is a crucial issue. Furthermore, determinants variability parameters for relationship provide quality manner which exploit available...
Abstract The Cestode Life Cycle Database (CLCdb) project was initiated in 2005 with the objective to develop a comprehensive and centralised resource store, retrieve analyse key information concerning tapeworm life cycles; e.g. morphogenesis, intermediate host identities, transmission patterns, etc. It constitutes first electronic database deal complex cycle for any helminth taxon. Here we critically evaluate our experience after exhaustively entering data model group, cyclophyllidean family...
<title>Abstract</title> Although sea turtles have long been considered deaf and silent, recent studies confirmed their ability to hear produce sounds. A study revealed that juvenile green Chelonia mydas, can ten distinct types of sounds, with some them potentially involved in social communication. To investigate the potential biological function these we used video recordings associated acoustic 23 free-ranging examined co-occurrences sounds behaviours or external events. Our most were...