scholarly journals Phenology of Petersianthus Macrocarpus from 2017 to 2020 and Risk of Pollinosis in Dictrict of Abidjan

Petersianthus macrocarpus is a plant species whose pollens are potentially allergenic. This plant is present from the coast to the centre of the country. The objective of this study is to prevent populations from being exposed to the pollens of Petersianthus macrocarpus. Specifically, it was a question of defining the flowering of Petersianthus macrocarpus, evaluating the impact of the climate on this flowering and listing the populations most exposed to P. macrocarpus pollens. The study took place in Abidjan, in the commune of Yopougon, specifically in South Niangon, from September 2017 to June 2020. Sampling by quadrat allowed to determine the number of individuals, the cover, the density and the frequency of the vegetation. Floral phenology was carried out by weekly observations using binoculars. The coverage in each quadrat was 1 and the frequency 100%. Individuals less than 6 m high did not bear any flowers. Two flowering periods were observed in the years 2017 to 2019. The first was from April to June, the second from November to January. However, there was no flowering from April to June in 2020. The evolution of rainfall in 2020 was not identical to that of the three previous years. The phenology of Petersianthus macrocarpus presents periods of high risk of pollinosis and is influenced by rainfall. Increasing wind speed exposes new populations to pollen. The installation of pollen collectors is certainly necessary to establish the pollen calendar of Petersianthus macrocarpus in Côte d’Ivoire.

2021 ◽  
Author(s):  
Matthew Cock

Abstract Writing about Zophopetes cerymica (which they considered more common) and P. laufella combined, Mariau and Morin (1974) state that attacks can be on palms of all ages, including young palms recently planted out. At this age, defoliation of the plants delays their subsequent development. Outbreaks on older trees are rarer, and the damage often less important; these attacks are generally localized at the edge of plantations. Mariau et al. (1981) add that the highest fronds are the most often damaged. Herder et al. (1994) refer to regular outbreaks of P. laufella on oil palm in southern Côte d'Ivoire. There are no more substantive reports on the impact of the feeding damage by these hesperiids.


2013 ◽  
Vol 89 (1) ◽  
pp. 32-41 ◽  
Author(s):  
Jean T. Coulibaly ◽  
Yves K. N'Gbesso ◽  
Eliézer K. N'Goran ◽  
Jürg Utzinger ◽  
Nicaise A. N'Guessan ◽  
...  

2019 ◽  
Vol 665 ◽  
pp. 1158-1167 ◽  
Author(s):  
Robert P. Mason ◽  
Zofia Baumann ◽  
Gunnar Hansen ◽  
Koffi Marcellin Yao ◽  
Mariame Coulibaly ◽  
...  

Plant Disease ◽  
2001 ◽  
Vol 85 (1) ◽  
pp. 59-64 ◽  
Author(s):  
P. N'Guessan ◽  
A. Pinel ◽  
A. A. Sy ◽  
A. Ghesquière ◽  
D. Fargette

In Côte d'Ivoire, the S2 strain of Rice yellow mottle virus (RYMV) predominated in the forested zones, including the “rice belt” to the west, in each of the cropping systems where rice was grown. The S1 strain occurred more frequently in the northern Guinean savanna, and only S1 isolates were found further north in the Sahelo-Soudanian zones. In mixed infection, S2 dominated over S1 both in viral capsid and RNA contents under temperature regimes encompassing those observed in savanna and forested zones of Côte d'Ivoire. There was no evidence of interactions in virus accumulation between the West African strains S1 or S2 with the more distantly related East African strain S4. Field trials emphasized the impact of RYMV, which induced yield losses of 40 to 60% in several widely grown cultivars of Oryza sativa indica and O. sativa japonica. We report the high resistance of the O. indica cv. Gigante under field conditions which was apparent with all the S1 and S2 isolates tested. Responses to RYMV infection of several cultivars were isolate dependent. With most differential cultivars, responses were not strain specific, with the exception of the O. japonica cv. Idsa6, in which the S2 isolates always induced higher yield losses than the S1 isolates.


2020 ◽  
Vol 3 (4) ◽  
pp. p141
Author(s):  
ASSAMOI Seraphim Desire

The inclusion of education in post-conflict reconstruction in a transitional justice process goes far beyond physical construction and educational facilities to become part of national educational planning and policy. The issue of education in post-conflict periods is at the level of the national education system in general and of educational policies and strategies in particular. In Côte d’Ivoire, as in other countries emerging from violent conflict, even if the issue of education can be identified in the structural and direct causes of the occurrence of conflicts, it must be recognized that the impact of these conflicts on education remains considerable at different levels. Thus, taking account of its consequences in post-conflict reconstruction in the context of transitional justice is of great interest both for its contribution to economic growth and for the promotion of fundamental human rights and social cohesion. A full involvement of education in the transitional justice process is a real potential for mutual reinforcement in the reconstruction process. Practical synergies between education and transitional justice call for closer collaboration between education and transitional justice actors.


2016 ◽  
Vol 12 (14) ◽  
pp. 240 ◽  
Author(s):  
Kouassi N’goran François ◽  
N’drin Beugré Anselme

The armed conflict that ravaged Côte d'Ivoire after the post-election crisis in november 2010 was sparked by several factors (land disputes, armed uprising of september 2002, tribal militias conquest of state power). In the regions of Guémon and Cavally that formed the epicenter of the war, intercommunal land disputes were instrumental in the outbreak of the war. These tensions between peasants have long caused confusion in the far west forest and contributed in part to the social division between indigenous and migrant communities. This qualitative study based on the phenomenological approach and firstly analyses the dynamics of these communal land disputes before the post-election crisis of 2010. Then, it situates the impact of these conflicts in the social division between communities.


2016 ◽  
Vol 12 (35) ◽  
pp. 229
Author(s):  
Kouadio Kouassi Richard ◽  
Bakayoko Adama ◽  
N’guessan Kanga Anatole ◽  
Konan Djezou

Since thirty years, four Australian Acacias species are introduced and studied in Anguédédou Research station. The station research is located in evergreen forest in the south of Côte d'Ivoire. The objective of the introduction of these species, is to rehabilitate degraded grounds and fallow after growing. The study aims at appreciating the impact of Acacia species on floristic diversity and the regeneration of forest species. For collecting data, we use quadrat method (35 x 50 m and 6 x 6 m).This method permitted the inventory of 212 species on 1.05 ha. Among these species, 1.89 % are Ivorian endemic species and 11.32 % are endemic of West African flora. The flora under the different species of Acacia are relatively diversified and dense. The majority of plant inventoried under Acacia species have small diameters. The highest specific richness average per plots (36 m2) were noted in the 11 years old parcels of Acacia mangium (26.20±2.34) and 27 years old parcels of Acacia auriculaeformis (25.40±2.34) and Acacia crassicarpa (30.60±2.34). The mean values of diameters (dbh ≥ 2.5 cm) fluctuate from 2.94±0.56 cm for the 8 years old stands of Acacia mangium to 8.09±0.56 cm for the 27 years old settlements of Acacia crassicarpa. The results show that leguminous trees can be used for recolonization of the deforested areas in order to rebuild quickly their plant biodiversity.


2021 ◽  
Vol 1 (11) ◽  
pp. 78-91
Author(s):  
Zahouo Pascale Ghislaine KOUAMÉ ◽  
Adou Serge Judicaël ANOUA ◽  
N’Doumy Noël ABE

Objectives. Postpartum haemorrhage is one of several direct causes of maternal death in Côte d’Ivoire. It is recurrent in the department of gynaecology and obstetrics at Bouaké University Hospital (CHU de Bouaké), but little is known to date about the underlying risk factors. The present study aims to describe the levels and trends displayed by the risk factors of postpartum haemorrhage before determining the contributing social factors in the aforesaid department. Material and methods. This study is retrospective in nature, concerning the period from 2014 to 2016. Data was obtained from delivery records and through individual interviews. The overall approach adopted is an anthropological one. Results. Postpartum haemorrhage is significant in light of its very high and increasing incidence (22.31%) among multiparous mothers. Within the latter category, fatal complications are a critical problem, with an annual average estimated at 35.98% and on the rise. The overall situation is alarming in view of this progressive deterioration. The persistence of the reproductive morbidity is attributable to various economic, social, cultural, and infrastructural factors. Conclusions. Communicational strategies are proposed as a type of community intervention conducive to social and behavioural change, with multiparous mothers as a priority target group, followed by older mothers in the medium term and by adolescent mothers in the long term. This should raise awareness about high-risk reproductive behaviours and practices as well as the environmental, economic, social, cultural, and infrastructural factors correlated to postpartum haemorrhage, with the ultimate goal of improving the quality and safety of reproductive practices. Keywords: postpartum haemorrhage, reproductive behaviour, high risk, obstetric emergency, maternal morbidity, Côte d’Ivoire.


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