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Jiang W, Paolini J, Bereau D, Battesti MJ, Yang Y, Jean-Marie É, Costa J, Robinson JC. French Guiana honeys from the Amazon biome: First description of volatile fraction and antioxidant capacity. Heliyon 2023; 9:e18526. [PMID: 37554807 PMCID: PMC10404971 DOI: 10.1016/j.heliyon.2023.e18526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/10/2023] [Accepted: 07/20/2023] [Indexed: 08/10/2023] Open
Abstract
Various honeys from French Guiana were collected and analyzed to investigate their volatile fraction composition and antioxidant activity. Volatile composition was assessed using HS-SPME/GC, GC-MS technique. Oxygenated monoterpenes like hotrienol (0.5-45.3%) were found as major molecules, followed by non terpenic compounds like phenylacetaldehyde (0.8-18.2%) or 3-hydroxy-4-phenyl-2-butanone (0.1-29.3%). Three chemical groups using statistical analysis were classified within investigated honey samples: norisoprenoids/shikimates, mevalonate and their combination. Total phenolics content (TPC) was determined by Folin-Ciocalteu method. Antioxidant activity was assessed by oxygen radical absorbance capacity (ORAC) and 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays. TPC and anti-radical activity were compared with multifloral honeys from neighboring regions, indicating the possible presence of compounds from the polyphenol family. These results are promising for further biological studies involving honeys from French Guiana.
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Affiliation(s)
- Weiwen Jiang
- Laboratoire COVAPAM, UMR QualiSud, Département Science et Technologies, Université de Guyane, 97300 French Guiana, France
| | - Julien Paolini
- UMR 6134 CNRS Science pour l'environnement, Science and Techniques Faculty, University of Corsica, 22 Jean Nicoli Av. 20250 Corte, Corsica, France
| | - Didier Bereau
- Laboratoire COVAPAM, UMR QualiSud, Département Science et Technologies, Université de Guyane, 97300 French Guiana, France
| | - Marie-José Battesti
- UMR 6134 CNRS Science pour l'environnement, Science and Techniques Faculty, University of Corsica, 22 Jean Nicoli Av. 20250 Corte, Corsica, France
| | - Yin Yang
- UMR 6134 CNRS Science pour l'environnement, Science and Techniques Faculty, University of Corsica, 22 Jean Nicoli Av. 20250 Corte, Corsica, France
| | - Élodie Jean-Marie
- Laboratoire COVAPAM, UMR QualiSud, Département Science et Technologies, Université de Guyane, 97300 French Guiana, France
| | - Jean Costa
- UMR 6134 CNRS Science pour l'environnement, Science and Techniques Faculty, University of Corsica, 22 Jean Nicoli Av. 20250 Corte, Corsica, France
| | - Jean-Charles Robinson
- Laboratoire COVAPAM, UMR QualiSud, Département Science et Technologies, Université de Guyane, 97300 French Guiana, France
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Barros LAC, Chaul JCM, Teixeira GA, Lod RB, Orivel J, de Aguiar HJAC. First Report of the Tramp ant Technomyrmex vitiensis Mann, 1921 (Formicidae: Dolichoderinae) in Brazil with Cytogenetic and Sperm Structure Data and an Updated Key to Brazilian Dolichoderinae Genera. Zool Stud 2022; 60:e29. [PMID: 36245915 PMCID: PMC9522628 DOI: 10.6620/zs.2022.61-29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 04/13/2022] [Indexed: 06/16/2023]
Abstract
Invasive ants are usually harmful taxa and are considered a potential problem to biodiversity due to their negative ecological impacts, as they can outcompete native ant species. Ten such species are reported in Brazil. In this study, we report for the first time the Asian tramp ant Technomyrmex vitiensis Mann, 1921 at the municipality of Oiapoque, in the Brazilian Amazon. The colony studied contained workers, intercastes, males and larvae, which provided sperm structure and cytogenetic data. Considering the unprecedented report of the genus Technomyrmex as well as the recent finding of the primarily Australian genus Leptomyrmex in Brazil, we present a revised key for the workers of Brazilian Dolichoderinae genera. Technomyrmex vitiensis presented 2n = 16 chromosomes; all metacentrics and comparative cytogenetics on the genus is provided. A single rDNA 18S site located in intrachromosomal region was observed in this species, which is a common trait in ants. The spermatozoa of T. vitiensis had a filiform shape, with 78.13 (± 1.96) μm of total length and 11.43 (± 0.51) μm of nucleus length. Total and nucleus sperm size length fit with the known variation observed in other ant species. The occurrence of T. vitiensis in Brazil is probably a result of traffic between French Guiana and the Amapá state. Cytogenetics and sperm structures of T. vitiensis enhance the biological knowledge of this tramp species. We highlight the scarce knowledge of ant diversity in the state of Amapá and the consequences that the presence of this species may have in this region.
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Affiliation(s)
| | - Júlio Cezar Mário Chaul
- Programa de Pós-graduação em Ecologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil. E-mail: (Chaul)
| | - Gisele Amaro Teixeira
- Programa de Pós-graduação em Biologia Celular e Estrutural, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil. E-mail: (Teixeira)
| | - Rodrigo Batista Lod
- Universidade Federal do Amapá, Campus Binacional, Oiapoque, Amapá, Brazil. E-mail: (Barros); (Lod)
| | - Jérôme Orivel
- CNRS, UMR EcoFoG, AgroParisTech, CIRAD, INRAE, Université de Guyane, Université des Antilles, Campus Agronomique, BP 316, 97379, Kourou Cedex, France. E-mail: (Orivel)
| | - Hilton Jeferson Alves Cardoso de Aguiar
- Universidade Federal do Amapá, Campus Binacional, Oiapoque, Amapá, Brazil. E-mail: (Barros); (Lod)
- Programa de Pós-graduação em Biodiversidade Tropical, Universidade Federal do Amapá, Macapá, Brazil. E-mail: (Aguiar)
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Nacher M, Rousseau C, Succo T, Andrieu A, Gaillet M, Michaud C, Servas V, Douine M, Schaub R, Adenis A, Demar M, Abboud P, Epelboin L, Djossou F. The Epidemiology of COVID 19 in the Amazon and the Guianas: Similarities, Differences, and International Comparisons. Front Public Health 2021; 9:586299. [PMID: 33777876 PMCID: PMC7990879 DOI: 10.3389/fpubh.2021.586299] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 02/16/2021] [Indexed: 12/24/2022] Open
Abstract
Background: The COVID 19 epidemic submerged many health systems in the Amazon. The objective of the present study was to focus on the epidemic curves of the COVID 19 epidemic in different centers, and to look at testing and mortality data. Methods: Publicly available datasets were used. The log10 of the daily cumulated number of cases starting from the day the territory reached 100 cumulated cases was plotted to compare the magnitude, shape and slope of the different curves. The maximum daily testing efforts were plotted for each territory in relation to the maximum daily number of diagnoses. The case fatality rate was computed by dividing the number of COVID 19 deaths by the number of confirmed cases. Results: In the Amazonian regions in general the speed of growth was generally lower than in Europe or the USA, or Southern Brazil. Whereas, countries like South Korea or New Zealand "broke" the curve relatively rapidly the log linear trajectory seemed much longer with signs of a decline in growth rate as of early July 2020. After a very slow start, French Guiana had the lowest slope when compared to other Amazonian territories with significant epidemics. The Amazonian states of Roraima, Amazonas, Parà, and Amapà had among the highest number of cases and deaths per million inhabitants in the world. French Guiana had significantly fewer deaths relative to its number of confirmed cases than other Amazonian territories. French Guiana had a late epidemic surge with intense testing scale-up often exceeding 4,000 persons tested daily per million inhabitants. Brazil was an outlier with low daily testing levels in relation to the number of daily diagnoses. Conclusions: There were marked heterogeneities mortality rates suggesting that socioeconomic, political factors, and perhaps ethnic vulnerability led to striking outcome differences in this Amazonian context.
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Affiliation(s)
- Mathieu Nacher
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- Département Formation Recherche (DFR) Santé, Université de Guyane, Cayenne, French Guiana
| | | | | | | | - Mélanie Gaillet
- Centres Délocalisés de Prévention et de Soins, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Céline Michaud
- Centres Délocalisés de Prévention et de Soins, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Véronique Servas
- Centres Délocalisés de Prévention et de Soins, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Maylis Douine
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Roxane Schaub
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Antoine Adenis
- Centre d'Investigation Clinique Antilles Guyane, INSERM 1424, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Magalie Demar
- Laboratory, Centre Hospitalier de Cayenne, Cayenne, French Guiana
- Unité Mixte de Recherche Tropical Biome et Immuno-Pathologie (UMR TBIP), Université de Guyane, Cayenne, French Guiana
| | - Philippe Abboud
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Loïc Epelboin
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
| | - Félix Djossou
- Département Formation Recherche (DFR) Santé, Université de Guyane, Cayenne, French Guiana
- Unité Mixte de Recherche Tropical Biome et Immuno-Pathologie (UMR TBIP), Université de Guyane, Cayenne, French Guiana
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier de Cayenne, Cayenne, French Guiana
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Geda SR, Lujan NK, Perkins M, Abernethy E, Sabaj MH, Gangloff M. Multilocus phylogeny of the zebra mussel family Dreissenidae (Mollusca: Bivalvia) reveals a fourth Neotropical genus sister to all other genera. Mol Phylogenet Evol 2018; 127:1020-1033. [PMID: 30016651 DOI: 10.1016/j.ympev.2018.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 07/05/2018] [Accepted: 07/11/2018] [Indexed: 11/16/2022]
Abstract
Dreissenidae is one of the most economically and ecologically important families of freshwater and estuarine mollusks. Fourteen extant species and three genera are currently recognized: Congeria contains three species from karst caves along the eastern Adriatic coast and one from the Orinoco River of Venezuela, Dreissena contains six species native to Eastern European rivers and estuaries, and Mytilopsis contains three species from the Gulf of Mexico, Caribbean, and northwestern coast of South America and one from the Tocantins River of Brazil. Previous molecular phylogenetic studies have examined all species except those from South American rivers, and found each genus to be monophyletic with Congeria and Mytilopsis forming a clade sister to Dreissena. We present the first multilocus phylogeny of Dreissenidae inclusive of South American riverine species. Bayesian and maximum likelihood analyses of a 3085 bp alignment consisting of mitochondrial (COI and 16S) and nuclear (18S and 28S) gene regions found Neotropical species to be consistently and strongly supported as sister to all other dreissenids, although incomplete sequencing of the single Orinoco specimen obscured Neotropical monophyly. Our intergeneric relationships are inconsistent with an extensive fossil record suggesting that dreissenids originated in Europe approximately 30 My before dispersing to the Western Hemisphere. Fossil-calibrated analyses indicated that Neotropical dreissenids diverged from European lineages in the mid to late Eocene (∼39.3 Ma), and Brazilian and Guiana shield populations diversified during the Oligocene to Miocene. We erect the new genus Rheodreissena for all Neotropical freshwater dreissenids and present haplotype data indicative of at least three species. Widespread anthropogenic alteration of the middle Xingu River and lower Amazon threatens the persistence of these endemic, poorly studied mussels and may facilitate introduction beyond their native range.
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Affiliation(s)
- Susan R Geda
- Biology Department, Appalachian State University, Boone, NC, USA; Florida Fish and Wildlife Conservation Commission, Milton, FL, USA.
| | | | - Michael Perkins
- North Carolina Wildlife Resources Commission, Marion, NC, USA
| | - Erin Abernethy
- Integrative Biology Department, Oregon State University, Corvallis, OR, USA
| | - Mark H Sabaj
- Academy of Natural Sciences, Philadelphia, PA, USA
| | - Michael Gangloff
- Biology Department, Appalachian State University, Boone, NC, USA
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Dezécache C, Salles JM, Vieilledent G, Hérault B. Moving forward socio-economically focused models of deforestation. Glob Chang Biol 2017; 23:3484-3500. [PMID: 28055134 DOI: 10.1111/gcb.13611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 12/14/2016] [Indexed: 06/06/2023]
Abstract
Whilst high-resolution spatial variables contribute to a good fit of spatially explicit deforestation models, socio-economic processes are often beyond the scope of these models. Such a low level of interest in the socio-economic dimension of deforestation limits the relevancy of these models for decision-making and may be the cause of their failure to accurately predict observed deforestation trends in the medium term. This study aims to propose a flexible methodology for taking into account multiple drivers of deforestation in tropical forested areas, where the intensity of deforestation is explicitly predicted based on socio-economic variables. By coupling a model of deforestation location based on spatial environmental variables with several sub-models of deforestation intensity based on socio-economic variables, we were able to create a map of predicted deforestation over the period 2001-2014 in French Guiana. This map was compared to a reference map for accuracy assessment, not only at the pixel scale but also over cells ranging from 1 to approximately 600 sq. km. Highly significant relationships were explicitly established between deforestation intensity and several socio-economic variables: population growth, the amount of agricultural subsidies, gold and wood production. Such a precise characterization of socio-economic processes allows to avoid overestimation biases in high deforestation areas, suggesting a better integration of socio-economic processes in the models. Whilst considering deforestation as a purely geographical process contributes to the creation of conservative models unable to effectively assess changes in the socio-economic and political contexts influencing deforestation trends, this explicit characterization of the socio-economic dimension of deforestation is critical for the creation of deforestation scenarios in REDD+ projects.
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Affiliation(s)
- Camille Dezécache
- Université de la Guyane, UMR EcoFoG (AgroParistech, CNRS, Cirad, Inra, Université des Antilles, Université de la Guyane), Campus agronomique de Kourou, 97310, Kourou, French Guiana, France
| | - Jean-Michel Salles
- CNRS, UMR LAMETA (CNRS, Inra, SupAgro, Université de Montpellier), Campus Inra-SupAgro, Bat.26, 2 Place Viala, 34060, Montpellier Cedex 2, France
| | - Ghislain Vieilledent
- Cirad, UPR Forêts et Sociétés, 34398, Montpellier, France
- JRC, Bio-Economy Unit (JRC.D.1), Joint Research Center of the European Commission, 21027, Ispra, Italy
| | - Bruno Hérault
- Cirad, UMR EcoFoG (AgroParistech, CNRS, Cirad, Inra, Université des Antilles, Université de la Guyane), Campus agronomique de Kourou, 97310, Kourou, French Guiana, France
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Tareau MA, Palisse M, Odonne G. As vivid as a weed… Medicinal and cosmetic plant uses amongst the urban youth in French Guiana. J Ethnopharmacol 2017; 203:200-213. [PMID: 28347829 DOI: 10.1016/j.jep.2017.03.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 03/17/2017] [Accepted: 03/18/2017] [Indexed: 05/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE French Guiana is a French overseas territory with a rich history of migration that has led to a highly intercultural society. Today, its population is one of the youngest in the French territory and is rapidly increasing. Despite a context of cultural revival seeking "tradition", a distanced baseline of local practices is still lacking. This work addresses some aspects of the cultural hybridizations in progress in urban areas. METHODS Semi directed interviews were conducted with willing participants aged between 18 and 40. Interviews took place in French Guiana's two main urban centres: Cayenne and Saint Laurent du Maroni. People were interviewed about the last medicinal plant they used in the preceding year. Due to the high use of plant baths in French Guiana, a focus was made on baths. RESULTS AND DISCUSSION Eighty-three people answered: 43 women and 40 men (mean age of 28.7 years old). In total, 226 remedies were counted in our study, 155 single plant remedies and 71 compound remedies leading to 316 use reports of plants from 16 cultural groups. A surprising number of 108 botanical species were recorded. Eighty-one recipes for baths were also collected. Despite this high citation rate, a rather low proportion of people declare a systematic and regular recourse upon local pharmacopoeia (46%; 38/83). Although many interviewees used plants, far from the majority used them on a regular basis. In practice, 50% of the species (54/108 spp.; 99/316 URs) are non-native but domesticated exotic species, imported from Asia, Europe, Africa or remote parts of America, either during colonization, the slave trade era, or more recently with the latest migrations. CONCLUSION Although phytotherapy use is often thought to be related to countryside dwellers and older people, medicinal plants seem to play an important role in the lives of urban French Guianese youth. Research shows a large diversity of medicinal species used linked with the great cultural diversity of the Guianese cities. One characteristic of this population is the hybridization process leading to a perpetual renewal of practices, both in terms of species and practice.
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Affiliation(s)
- Marc Alexandre Tareau
- Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, 97300 Cayenne, France
| | - Marianne Palisse
- Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, 97300 Cayenne, France
| | - Guillaume Odonne
- Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, 97300 Cayenne, France.
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