Auteurs, date et publication :
Auteurs O. Guillaume , A. Coulon , J.-F. Le Galliard , J. Clobert , J. F. Le Galliard , F. Gaill , J. M. Guarini
Date : 2025
Pages : 43-61
Catégorie(s)
#CNRS #ENS #PLANAQUAAuteurs, date et publication :
Auteurs Christophe Girod , Danilo Matzke
Publication : Zoosystema
Date : 2025
Volume : 42
Issue : 4
Pages : 57-76
Catégorie(s)
#CNRS #FORET NouraguesRésumé
Warning signals are well known in the visual system, but rare in other modalities. Some moths produce ultrasonic sounds to warn bats of noxious taste or to mimic unpalatable models. Here, we report results from a long-term study across the globe, assaying moth response to playback of bat echolocation. We tested 252 genera, spanning most families of large-bodied moths, and document anti-bat ultrasound production in 52 genera, with eight subfamily origins described. Based on acoustic analysis of ultrasonic emissions and palatability experiments with bats, it seems that acoustic warning and mimicry are the raison d'être for sound production in most moths. However, some moths use high-duty-cycle ultrasound capable of jamming bat sonar. In fact, we find preliminary evidence of independent origins of sonar jamming in at least six subfamilies. Palatability data indicate that jamming and warning are not mutually exclusive strategies. To explore the possible organization of anti-bat warning sounds into acoustic mimicry rings, we intensively studied a community of moths in Ecuador and, using machine-learning approaches, found five distinct acoustic clusters. While these data represent an early understanding of acoustic aposematism and mimicry across this megadiverse insect order, it is likely that ultrasonically signaling moths comprise one of the largest mimicry complexes on earth.
Auteurs, date et publication :
Auteurs Jesse R. Barber , David Plotkin , Juliette J. Rubin , Nicholas T. Homziak , Brian C. Leavell , Peter R. Houlihan , Krystie A. Miner , Jesse W. Breinholt , Brandt Quirk-Royal , Pablo Sebastián Padrón , Matias Nunez , Akito Y. Kawahara
Publication : Proceedings of the National Academy of Sciences
Date : 2022
Volume : 119
Issue : 25
Pages : e2117485119
Catégorie(s)
#ANR-Citation #CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs Yu Bai , Stefano Tebaldini , Dinh Ho Tong Minh , Wen Yang
Publication : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Date : 2025
Issue : 99
Pages : 1-7
Catégorie(s)
#CIRAD #CNRS #FORET Nouragues #FORET ParacouAuteurs, date et publication :
Auteurs Isabelle Maréchaux , Jérôme Chave
Publication : Ecological Monographs
Date : 2023
Volume : 87
Issue : 4
Pages : 632-664
Catégorie(s)
#CNRS #FORET Nouragues #FORET ParacouAuteurs, date et publication :
Auteurs Matieu Henry , Maxime Réjou-Méchain , Miguel Cifuentes Jara , Craig Wayson , Daniel Piotto , James Westfall , José María Michel Fuentes , Federico Alice Guier , Héctor Castañeda Lombis , Edwin Castellanos López
Publication : Annals of Forest Science
Date : 2025
Volume : 72
Issue : 6
Pages : 779-788
Catégorie(s)
#CNRS #FORET NouraguesRésumé
Environmental DNA (eDNA) metabarcoding has emerged as one of the most efficient methods to assess aquatic species presence. While the method can in theory be used to investigate nonaquatic fauna, its development for inventorying semi-aquatic and terrestrial fauna is still at an early stage. Here we investigated the potential of aquatic eDNA metabarcoding for inventorying mammals in Neotropical environments, be they aquatic, semi-aquatic or terrestrial. We collected aquatic eDNA in 96 sites distributed along three Guianese watersheds and compared our inventories to expected species distributions and field observations derived from line transects located throughout French Guiana. Species occurrences and emblematic mammalian fauna richness patterns were consistent with the expected distribution of fauna and our results revealed that aquatic eDNA metabarcoding brings additional data to line transect samples for diurnal nonaquatic (terrestrial and arboreal) species. Aquatic eDNA also provided data on species not detectable in line transect surveys such as semi-aquatic, aquatic and nocturnal terrestrial and arboreal species. Although the application of eDNA to inventory mammals still needs some developments to optimize sampling efficiency, it can now be used as a complement to traditional surveys.
Auteurs, date et publication :
Auteurs Opale Coutant , Cécile Richard-Hansen , Benoit de Thoisy , Jean-Baptiste Decotte , Alice Valentini , Tony Dejean , Régis Vigouroux , Jérôme Murienne , Sébastien Brosse
Publication : Molecular Ecology Resources
Date : 2025
Volume : 21
Issue : 6
Pages : 1875-1888
Catégorie(s)
#CNRS #FORET NouraguesRésumé
Seedling recruitment is a bottleneck for population dynamics and range shift. The vital rates linked to recruitment by seed are impacted by amplified drought induced by climate change. In the Mediterranean region, autumn and winter seedling emergence and mortality may have strong impact on the overall seedling recruitment. However, studies focusing on the temporal dynamic of recruitment during these seasons are rare. This study was performed in a deciduous Mediterranean oak forest located in southern France and quantifies the impact of amplified drought conditions on autumn and winter seedling emergence and seedling mortality rates of two herbaceous plant species with meso-Mediterranean and supra-Mediterranean distribution (respectively, Silene italica and Silene nutans). Seedlings were followed from October 2019 to May 2020 in both undisturbed and disturbed plots where the litter and the aboveground biomass have been removed to create open microsites. Amplified drought conditions reduced seedling emergence and increased seedling mortality for both Silene species but these negative effects were dependent on soil disturbance conditions. Emergence of S. italica decreased only in undisturbed plots (−7%) whereas emergence of S. nutans decreased only in disturbed plots (−10%) under amplified drought conditions. The seedling mortality rate of S. italica was 51% higher under amplified drought conditions in undisturbed plots while that of S. nutans was 38% higher in disturbed plots. Aridification due to lower precipitation in the Mediterranean region will negatively impact the seedling recruitment of these two Silene species. Climate change effects on early vital rates may likely have major negative impacts on the overall population dynamic.
Auteurs, date et publication :
Auteurs Suzon Garnier , Emma Giordanengo , Arne Saatkamp , Mathieu Santonja , Ilja M. Reiter , Jean‐Philippe Orts , Thierry Gauquelin , Eric Meineri
Publication : Ecology and Evolution
Date : 2025
Volume : 11
Issue : 22
Pages : 16143-16152
Catégorie(s)
#ANR-Citation #CNRS #FORET O3HPAuteurs, date et publication :
Auteurs Mario X Ruiz‐González , Jérémie Lauth , Céline Leroy , Alain Jauneau , Hervé Gryta , Patricia Jargeat , Alain Dejean , Jérôme Orivel
Publication : Journal of Basic Microbiology
Date : 2025
Volume : 53
Issue : 1
Pages : 98-100
Catégorie(s)
#CNRS #FORET NouraguesRésumé
Species interactions are central in predicting the impairment of biodiversity with climate change. Trophic interactions may be altered through climate-dependent changes in either predator food preferences or prey communities. Yet, climate change impacts on predator diet remain surprisingly poorly understood. We experimentally studied the consequences of 2°C warmer climatic conditions on the trophic niche of a generalist lizard predator. We used a system of semi-natural mesocosms housing a variety of invertebrate species and in which climatic conditions were manipulated. Lizards in warmer climatic conditions ate at a greater predatory to phytophagous invertebrate ratio and had smaller individual dietary breadths. These shifts mainly arose from direct impacts of climate on lizard diets rather than from changes in prey communities. Dietary changes were associated with negative changes in fitness-related traits (body condition, gut microbiota) and survival. We demonstrate that climate change alters trophic interactions through top-predator dietary shifts, which might disrupt eco-evolutionary dynamics.
Auteurs, date et publication :
Auteurs Elvire Bestion , Andrea Soriano-Redondo , Julien Cucherousset , Staffan Jacob , Joël White , Lucie Zinger , Lisa Fourtune , Lucie Di Gesu , Aimeric Teyssier , Julien Cote
Publication : Proceedings of the Royal Society B: Biological Sciences
Date : 2019
Volume : 286
Issue : 1914
Pages : 20192227