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Functional trait composition of carabid beetle communities predicts prey suppression through both mass ratio and niche complementarity mechanisms

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Insect Science 2024年第2期31卷 562-574页

作者： Abdelhak Rouabah Francoise Lasserre-Joulin sylvain plantureux Simon Taugourdeau Bernard Amiaud Universite de Loraine INRAELAENancyF-54000France UMR SELMET CIRADINRAEInstitut AgroUniversite de MontpellierMontpellier34000France CIRAD UMR SELMET-PPZSDakarSéenegal UMR Siva Universitéde LorraineAgroParisTechINRAEVandoeuvreLes Nancy54506France

Several components of predator functional diversity have been hypothesized to influence prey suppression through either niche complementarity or mass ratio effects.Nevertheless,most studies have used a functional group approach when assessing the role of these predators in ecosystem functioning.By adopting a trait-based approach,we evaluated the relative contributions of carabid diversity components in predicting prey suppression.Our results highlight the importance of both taxonomic and functional diversity components of carabids as key drivers of prey suppression.Prey suppression was best predicted by carabid densities,with the dominance of Poecilus cupreus potentially driving the positive effect of community total abundance through the mass ratio effect.Prey suppression increased with increasing the density of large carabids.In addition,carabid eye diameter and antennal length were key functional traits for predicting prey suppression.Furthermore,prey suppression increased with increasing carabid functional richness following the niche complementarity effect.In contrast to functional richness,functional evenness and functional divergence of carabid communities were weakly correlated with prey suppression.By identifying which diversity components of carabid communities contribute the most to increase prey suppression,our results can guide efforts aiming to predict the relationship between diversity of these predators and ecosystem functioning.

关键词： abundance distribution biological control body size ecosystem function functional richness predator-prey interactions

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Factors associated with decreased compliance after on-site extracorporeal membrane oxygenation cannulation for acute respiratory distress syndrome:A retrospective,observational cohort study

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Journal of Intensive Medicine 2024年第2期4卷 194-201页

作者： sylvain Le Pape Florent Joly François Arrivé Jean-Pierre Frat Maeva Rodriguez Maïa Joos Laura Marchasson Mathilde Wairy Arnaud WThille Rémi Coudroy Centre Hospitalier Universitaire de Poitiers Service de Médecine Intensive RéanimationPoitiersFrance INSERM Centre d'Investigation Clinique 1402 IS-ALIVE Research GroupUniversitéde PoitiersPoitiersFrance

Background Extracorporeal membrane oxygenation(ECMO)for acute respiratory distress syndrome(ARDS)is systematically associated with decreased respiratory system compliance(CRS).It remains unclear whether transportation to the referral ECMO center,changes in ventilatory mode or settings to achieve ultra-protective ventilation,or the natural evolution of ARDS drives this change in respiratory mechanics.Herein,we assessed the precise moment when CRS decreases after ECMO cannulation and identified factors associated with decreased CRS.Methods To rule out the effect of transportation and the different modes of ventilation on CRS,we conducted a retrospective,single-center,observational cohort study from January 2013 to May 2020,on 22 patients with severe ARDS requiring on-site ECMO and ventilated in pressure-controlled mode to achieve ultra-protective ventilation.CRS was assessed at different time points ranging from 12 h before ECMO cannulation to 72 h after ECMO cannulation.The primary outcome was the relative change in CRS between 3 h before and 3 h after ECMO cannulation.The secondary outcomes included variables associated with the relative changes in CRS within the first 3 h after ECMO cannulation and the relative changes in CRS at each time point.Results CRS decreased within the first 3 h after ECMO cannulation(−28.3%,95%confidence interval[CI]:−38.8 to−17.9,P<0.001),while the decrease was mild before and after these first 3 h after ECMO cannulation.To achieve ultra-protective ventilation,respiratory rate decreased in the mean by–13 breaths/min(95%CI:−15 to−11)and driving pressure by−8.3 cmH2O(95%CI:−11.2 to−5.3),resulting in decreased tidal volume by−3.3 mL/kg of predicted body weight(95%CI:−3.9 to−2.6)as compared to before ECMO cannulation(P<0.001 for all).Plateau pressure reduction,driving pressure reduction,and tidal volume reduction were significantly associated with decreased CRS after ECMO cannulation,whereas neither respiratory rate,positive end-expiratory pressure,inspired fraction of oxygen,fluid balance

关键词： Acute respiratory distress syndrome Extacorporeal membrane oXygenation Driving pressure Respiratory compliance

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Accidental Ingestion of Nitric Acid in an Agricultural Company: A Case Study and Literature Review

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Occupational Diseases and Environmental Medicine 2024年第1期12卷 21-27页

作者： Asséga sylvain Sagna Mame Thioro Aïssatou Fall Mossane Dominique Ndour Sidy Diallo Société de Cultures Légumières (SCL) Saint-Louis Sénégal West Africa Farms (WAF) Yamane Louga Sénégal International Committee of The Red Cross Dakar Sénégal Saint-Louis Regional Hospital Center Saint-Louis Sénégal

Introduction: Though common in society, caustic accidental ingestion is rare in the agricultural industry. This study describes a case of ingestion of nitric acid used as an agricultural fertilizer by an ordinary worker at the Société de Cultures Légumières. Clinical Case: This is a 33-year-old unschooled woman who ingested a sip of nitric acid from an abandoned labelled acid canister near a farming plot of land. She showed a burn of the oral cavity with a bleeding tablecloth and an intense retrosternal pain. The duodenal oesophagus fibroscopy screening that was carried out 18 hours after the accident, revealed an esophagitis class 2b. The tests revealed no anomalies. Fifteen (15) days after the accident, the FOGD was normal. Following an 8-month-follow up, no signs of stenosis or degeneration were noted. Conclusion: The accidental ingestion of nitric acid is rare in adult. Its treatment is mainly symptomatic and aims at preserving vital functions without directly fighting the ingested substance off. The right actions must be integrated into the 15-minute Health and Safety awarenesssessions for optimum pre-hospital management. The hospital evaluation is mandatory and is carried out thanks to the digestive endoscopy, which is still relevant in this indication, but is completed by the thoraco-abdominal CT. The latter is very sensitive the transmural necrosis diagnosis.

关键词： Accident Agriculture Caustic Fibroscopy Senegal

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Evaluation of the Efficacy of Essential Oil Extracts in the Control of Termites (Isoptera: Termitidae) in Cashew Orchards in Badikaha (Côte d’Ivoire)

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Advances in Entomology 2024年第2期12卷 93-104页

作者： Adama Coulibaly Magloire Yves Minhibo Charles Konan Kouakou sylvain Bi Tra Djata Sanogo Lassina Fondio Mudde Barnabas National Agricultural Research Center (CNRA) Korhogo Regional Division Lataha Research Station Cashew Mango Papaya Program Abidjan C&#244te d&#8217Ivoire Agricultural Production Improvement Laboratory Jean Lorougnon Gu&#233d&#233 University Daloa C&#244te d&#8217Ivoire Ngetta Zonal Agricultural Research and Development Institute National Agricultural Research Organization (NARO) Lira Uganda

Cashew tree has gradually moved from a purely ecological aspect to a socio-economic one, due to the marketing of its nuts. But production per area, estimated at between 424 and 547 kg/ha, remains low, in contrast to India (2nd largest producer) and Vietnam (3rd largest producer), whose yields range from 1000 to 1500 and 2000 to 2500 kg/ha respectively. This low yield is due to a number of factors, among which insect pests are the most damaging. Among these insects, termites are considered to be one of the main pests of cashew trees. The general objective of this study is to contribute to termite management through the use of bioinsecticides, an alternative to the use of chemicals in cashew orchards. Five (5) biological products were tested: Limocide, Carapa oil, Neem oil, Kitana and Kaskara. Among them, two products proved effective, with a mortality rate of over 50%. These were Limocide, whose LC50 was obtained in 24 h at a dose of 3.6 g/ml and 3.1 g/ml , giving a mortality rate of 57.66% ± 4.04% and 51.33 ± 2.08 respectively , and Carapa, at a dose of 4.5 g/ml, with an estimated mortality rate of 52.33% ± 1.52%. Such results have demonstrated the potential application of Limocide and Carapa biopesticides to sustainably control termites in cashew orchards of Côte d’Ivoire.

关键词： Termite Pest Organic Products Cashew Tree Côte d’Ivoire

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Sequential Analysis in the Identification of 3rd Order System Tract in the Abidjan Margin

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Open Journal of Applied Sciences 2024年第6期14卷 1474-1489页

作者： Blandine Akissi Egoran N’guessan Donald Ahoure Fori Yao Paul Assalé sylvain Mondé Loukou Victor N’da UFR Marine Sciences San Pedro University San Pedro Cte dIvoire UFR of Sciences and Technologies Alassane Ouattara Bouak Laboratory of Plant Biology and Earth Sciences Bouak Cte dIvoire UFR/STRM Flix Houphout Boigny de Cocody Abidjan Cte dIvoire PETROCI Consultant at the Center for Analysis and Research Department of Sequential Stratigraphy Abidjan Cte dIvoire

The use of sequential stratigraphy concept, based on well logs, sedimentology, and biostratigraphy, has shed light on the complex mechanisms controlling sedimentary accumulations. Consequently, identifying these mechanisms allows us to predict the hydrocarbon generation potential of source rocks. In the Ivorian offshore sedimentary basin, certain studies have contributed to understanding and characterizing the petroleum system. However, these previous works did not integrate biostratigraphic data to highlight sedimentary facies. This study, conducted on two wells in the Abidjan margin, is crucial as it helps us comprehend the geometry of fossil sediments in relation to sea level variations. It will also aid in reconstructing the basin-filling history and predicting the distribution of rocks capable of trapping oil, determining lowstand systems tracts (reservoir rocks), transgressive systems tracts, and highstand systems tracts (cap rocks). Lithological analysis revealed predominantly clayey sedimentation with sandy layers. Well log data facilitated the delineation of formation boundaries and highlighted reservoirs consisting of sands, sandstones, limestones, and occasionally intercalated shales. Integrating these analysis results with biostratigraphic interpretations based on foraminifera and palynomorphs revealed that the traversed formations were deposited in a transitional environment ranging from Coniacian to Maastrichtian ages. Applying sequential stratigraphy concept from well logging resolved dating issues encountered in microfossil-poor or microfossil-free zones. The results of the Coniacian-Maastrichtian age sequential subdivision were aligned with the chart.

关键词： Sequence Stratigraphy Systems Tracts Senonian Côte d’Ivoire

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Improvement of Rice Plant Root by Kaolin Application in Iron Toxicity Condition at Zoukougbeu (Central-West of Côte d’Ivoire)

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Open Journal of Soil Science 2024年第5期14卷 308-318页

作者： Sehi Zokagon sylvain Konan Kouassi Urbain Adechina Olayossimi Ouattara Amidou Kouamé Firmin Bongoua Jeanne Devisme Cherif Mamadou Brahima Koné Dé partement des Sciences et Techniques Universit&#233 Alassane Ouattara Bouak&#233 C&#244te d&#8217Ivoire Centre d’ Excellence Africain sur le Changement Climatique la Bidiversit&#233 et l&#8217Agriculture DurableUniversit&#233 F&#233lix Houphouet Boigny Abidjan C&#244te d&#8217Ivoire Dé partement Agriculture et Technologie Nouvelle Universit&#233 de San-Pedro San-Pedro C&#244te d'Ivoire Unité de Formation et de Recherche en Agroforesterie D&#233partement des Sciences de la Terre Universit&#233 Jean Lorougnon Gu&#233d&#233 de Daloa Daloa C&#244te d&#8217Ivoire Dé partement de Physiologie V&#233g&#233tale Universit&#233 Felix Houphouet Boigny Abidjan C&#244te d&#8217Ivoire Dé patartement des Sciences du sol Universit&#233 Felix Houphouet Boigny Abidjan C&#244te d&#8217Ivoire

In the tropics, lowland rice cultivation is often confronted with the problem of iron toxicity. The solution proposed by research in general is the use of industrial silicon. However, the high cost of industrial silicon limits its adoption by farmers. A study was carried out in Zakogbeu;Center-West of Côte d’Ivoire, to assess the potential of kaolin to mitigate the effect of this soil constraint on the root of the rice plant. Five kaolin-based treatments were analyzed (T0 = 0 kg kaolin ha−1, T1 = 366 kg kaolin ha−1, T2 = 736 kg kaolin ha−1, T3 = 1097 kg kaolin ha−1 and T4 = 1465 kg kaolin ha−1 are 0, 200, 400, 600 and 800 kg SiO2 ha−1) in a device in complete random blocks, with 5 repetitions. The results obtained show that kaolin supply increases the length of the root tissue as well as the number of branching of the root of the rice plant. Root tissue increased from 10 cm with T0 treatment to more than 15 cm with treatment T4. The microscopic observation of the roots shows that in the treatment T0, the roots present only primary ramifications and the tertiary and quaternary ramifications are observed with the treatments T3 and T4. The contribution of kaolin is an alternative to inhibit the effect of iron toxicity on the rice plant root development in iron toxicity condition.

关键词： Iron Toxicity Kaolin Root Rice Cote d’Ivoire

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Benign Nasosinus Tumors: Epidemiological, Clinical, Morphological, Therapeutic, and Evolutionary Aspects at the Adolphe SICE General Hospital in Pointe-Noire (Congo-Brazzaville)

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Open Journal of Pathology 2024年第1期14卷 1-10页

作者： sylvain Diembi Sydney Frousse Christian Ngatali Harol Boris Otouana Gérard Chidrel Gouoni Franck Itiere Odzili Donatien Moukassa Gontran Ondzotto ENT Department Adolphe SICE General Hospital Pointe-Noire Congo Oncology Department Loandjili General Hospital Pointe-Noire Congo ENT Department Brazzaville Hospital and University Center Brazzaville Congo Master’s Department Health & Human Biology FSSA UMNG Brazzaville Congo

Introduction: Benign nasosinus tumors (BNST) of epithelial origin are relatively rare and arise from the various lining tissues of the nasal and sinus cavities, and from glands developed from these epithelial invaginations. These include nasosinusal polyps, pleiomorphic adenoma and inverted papilloma. The aim of our study was to investigate the epidemiological, clinical, morphological, therapeutic, and evolutionary particularities of these three clinical entities, including two tumors with the potential for progressive malignancy (pleiomorphic adenoma and inverted papilloma) and one strictly benign tumor with a favorable evolution (nasosinus polyp or Schneider polyp). Materials and Methods: This was a retrospective, analytical, cross-sectional study conducted from January 1, 2006 to December 31, 2019 (13 years), in the Department of Otolaryngology and Cervicofacial Surgery at Adolphe SICE Hospital, Pointe-Noire, Congo-Brazzaville. Results: During the study period, 74 patients were registered for a nasosinus tumor, of which 23 were benign tumors of epithelial origin (31%) distributed as follows: 15 cases of nasosinus polyp, 5 cases of pleomorphic adenoma and 3 cases of inverted papilloma. The mean age was 42.5 for polyps, with an estimated median of 38, and 42.9 for the other two entities (pleomorphic adenoma and inverted papilloma), with an estimated median of 41. Nasosinus allergy accounted for 17% of cases, followed by chronic sinusitis (12%);however, in 49% of cases, the patient’s history was not specified. There was no sexual predominance, the sex ratio being 1.08. Occupation, socio-economic level, and education had no impact on the development of these tumors. Most of our patients (52%, 12 cases) had a consultation delay of more than one (1) year, whatever the histological nature of the tumor. The complete nasosinus syndrome (NSS) included nasal obstruction, rhinorrhea, epistaxis, and anosmia, and was found in 19 cases (83%), most often reflecting a nasosinus polyp. CT scans were performed in all patients, w

关键词： Nasosinus Polyp Pleomorphic Adenoma Inverted Papilloma Epidemiology Clinical Features Therapeutic Management

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Evaluation of Agricultural Contamination Level by Heavy Metals and Pesticides in Sediments of Rivers and Water Bodies for Shrimp Fishing in the Lower Ouémé: Case of the Aguigadji, Ahlan and Sele Stations in Benin

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Advances in Materials Physics and Chemistry 2024年第2期14卷 25-46页

作者： Souradjou Orou Goura Fadéby Modeste Gouissi Armelle Sabine Yélignan Hounkpatin Wakili Bolatito Yessoufou Tayéwo sylvain Biaou Nonvignon Martial Fassinou Laboratory of Ecology Health and Animal Production (LESPA) Faculty of Agronomy (FA) University of Parakou (UP) Parakou Bénin Pluridisciplanary Research Laboratory for Technical Education (LARPET) University of Sciences Technologies Engineering and Mathematics of Abomey (UNSTIM) Lokossa Bénin

This study assessed sediment contamination by heavy metals and pesticide active ingredients linked to chemical inputs used in agricultural activities in the lower Ouémé. Pesticide residues from the organochlorine, pyrethroid and organophosphorus families were investigated by gas chromatography, and heavy metals (Cd, Pb, As, Ni, Zn, Fe, Mg, Cr and Hg) by atomic absorption spectrophotometry. The metallic pollution indices, the contamination factor (CF) and the ecological risk index were calculated. The results revealed 8 active ingredients in the rainy season and 9 in the dry season. Glyphosate was the active ingredient with the highest concentration at all stations, 9.65 ± 0.84 mg/kg recorded in the dry season at the Aguigadji station. All glyphosate values were above the EQS. DDT, Atrazine and Endosulfan also showed high concentrations in the dry and rainy seasons. Emamectin, Abamectin and Lambda Cyhalothrin also showed high concentrations in the dry season at Aguigadji, Ahlan and Sele. Only glyphosate was recorded at the control station (Toho), but in very low concentrations. Lead showed the highest concentrations at all the stations, 265.96 ± 21.02 mg/Kg in the rainy season and 255.38 ± 79.09 mg/Kg in the dry season, all detected at the Aguigadji station and above the EQS. Zn, Ni, Fe, Cu and Cr were all representative in both the dry and rainy seasons at the contaminated stations. Manganese showed high concentrations in the rainy season. Pb showed very high contamination (FC ≥ 6) at the Aguigadji and Ahlan stations and significant contamination (3 ≤ FC 6) at the Sele station in both the rainy and dry seasons. Ni, Hg and Cd, showed either moderate or significant contamination at the contaminated stations. The risk values showed a considerable ecological Ri (190 ≤ Ri < 380) in the rainy season and a moderate ecological Ri (95 ≤ Ri < 190) in the dry season at these contaminated stations.

关键词： Pesticides Heavy Metals Sediments Shrimp Fishing Area Lower Ouémé

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Acute Toxicity and Anthelmintic Effects of Gomphrena serrata L. (Amaranthaceae) Extracts on Adult Worms and Eggs of Haemonchus contortus

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Pharmacology & Pharmacy 2024年第5期15卷 207-221页

作者： Hippolyte Ouedraogo Mohamed Bonewendé Belemlilga Aristide Traore Gilchrist Abdoul Laurent Boly Félicité Moyenga Gueswindé Geoffroy Ouedraogo sylvain Ilboudo Lazare Belemnaba Sylvin Ouedraogo Laboratoire de Recherche-Dé veloppement de Phytom&#233dicaments et M&#233dicaments (LR-D/PM) Institut de Recherche en Sciences de la Sant&#233 (IRSS) Centre National de la Recherche Scientifique et Technologique (CNRST) Ouagadougou Burkina Faso Laboratoire de Dé veloppement du M&#233dicament (LADME) Centre de Formation deRecherche et d&#8217Expertises en Sciences du M&#233dicament (CEA-CFOREM) &#201cole Doctorale Sciences de la Sant&#233 (ED2S) Universit&#233 Joseph KI-ZERBO Ouagadougou Burkina Faso International Research Laboratory-Environnement Sant&#233 Soci&#233t&#233s (IRL 3189 ESS) CNRS/CNRST/UCAD/UGB/USTTB Ouagadougou Burkina Faso

Gomphrena serrata L. (Amaranthaceae) is a medicinal plant widely used traditionally in rural areas to treat many diseases, including gastrointestinal helminthiasis of small ruminants. This work aims to estimate the plant extracts phytochemical potential and study the activities of the aqueous decoction (GS_AD), aqueous macerate (GS_AM), and hydroalcoholic macerate (GS_HEM) of Gomphrena serrata extracts on two developmental stages (eggs and adult worms) of Haemonchus contortus. Phytochemical screening was carried out. The acute toxicity test was performed according to the Organisation for Economic Co-operation and Development (OECD) test guideline 423. The Haemonchus contortus eggs hatching inhibition test was performed left to incubate for 48 hours in the presence of the different plant extracts at increasing concentrations of 0.125;0.25;0.5;0.625;1;2;3 mg/mL. For the motility inhibition test on adult worms, the worms were contacted with the extracts at concentrations of 0.75;1;1.25;1.5;2;3;4 mg/mL and left to incubate for 24 hours. Albendazole and levamisole were used as standard. Phytochemical screening revealed the presence of tannins, saponins, reducing compounds, coumarins and derivatives, anthocyanins, steroids, triterpenes, and flavonoids. An acute toxicity study showed that the oral LD50 value of G. serrata was estimated to be 5000 mg/kg. All extracts showed an effect on both stages of parasite development. The hatching inhibition rate was 100% from 3 mg/mL for all three extracts. The rate of inhibition of motility was 100% from 4 mg/mL for each extract. HEM is more efficient on eggs and Haemonchus contortus adult worms than other extracts with IC50 of 0.457 mg/mL and LC50 of 1.329 mg/mL, respectively. These results suggest that Gomphrena serrata, a plant used by farmers, has anthelmintic properties.

关键词： Gomphrena serrata Haemonchus contortus Anthelmintic In Vitro

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Impact of Dewatering on the Spatio-Temporal Distribution of Benthic Macroinvertebrate Communities in the Okpara River, Benin

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Journal of Geoscience and Environment Protection 2024年第2期12卷 30-43页

作者： sylvain Tayéwo Biaou Fadéby Modeste Gouissi Armelle Sabine Yélignan Hounkpatin Zoulkanerou Orou Piami Wakili Bolatito Yessoufou Souradjou Orou Goura Nonvignon Martial Fassinou Laboratory of Ecology Health and Animal Production (LESPA) Faculty of Agronomy (FA) University of Parakou (UP) Parakou Benin Pluridisciplanary Research Laboratory for Technical Education (LARPET) University of Sciences Technologies Engineering and Mathematics of Abomey (UNSTIM) Lokossa Benin

Surface watercourses are areas of very high ecological and heritage value. Macroinvertebrates are bioindicators of the health of aquatic ecosystems. The aim of this study was to assess the effects of dewatering and re-watering cycles on benthic macroinvertebrate (BMI) communities. Two data collections were carried out at two stations (Okpara 1 and Okpara 2) on the Okpara river before and after dewatering. Thus, 8 samples of benthic macroinvertebrates and 12 physico-chemical parameters (T°C, pH, Transparency, Depth, Conductivity, Dissolved Oxygen that were measured in situ, and BOD5, COD, NH4+, NO3-, NO2- and PO43-) were assayed in the laboratory. Canonical Correspondence Analysis (CCA) was used to match physico-chemical data to MIB families. Shannon and Piélou diversity indices were used to determine the effects of dewatering on MIBs. The increase in temperature values of pH, BOD5, COD, NH4+, NO3-, NO2- and PO43-, after re-watering indicates the effect of dewatering on the quality of Okpara aquatic ecosystems. The benthic macrofauna collected consisted of 62.42% insects, 0.65% crustaceans, 6.48% molluscs, 0.72% worms and 0.14% arachnids. Whereas after re-watering, 21.67% insects, 0% crustaceans, 0.22% molluscs, 7.56% worms and 0.29% arachnids were recorded. Insects, crustaceans and molluscs were more abundant before dewatering than after. This was revealed by low abundances and taxonomic richness, as well as low Shannon index values of samples collected after re-watering.

关键词： Dewatering Benthic Macroinvertebrates Impact Physico-Chemical Parameters Okpara Rivers Nord-Benin

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