Hexamermis glossinae sp.nov. (Nematoda: Mermithidae), a parasite of tse-tse flies in West Africa

1981 ◽  
Vol 59 (5) ◽  
pp. 858-861 ◽  
Author(s):  
George O. Poinar Jr. ◽  
Bernard Mondet ◽  
J. P. Gouteux ◽  
C. Laveissiere
Keyword(s):  
West Africa ◽  
Ivory Coast ◽  
Nematode Parasites ◽  
Glossina Palpalis

A new mermithid, Hexamermis glossinae sp.n., is described as a parasite of tse-tse flies in West Africa. Nematode parasites were reared from adults of Glossina palpalis, G. p. pallicera, and G. n. nigrofusca from the region of Vavoua in the Ivory Coast. This is the first description of mermithids from these important hosts.

Description of parasitic stages of Hexamermis glossinae (Nematoda: Mermithidae) from Glossina in West Africa, with observations on the host–parasite association

1982 ◽  
Vol 60 (12) ◽  
pp. 3370-3376 ◽  
Author(s):  
W. M. Hominick ◽  
S. L. Croft ◽  
F. A. S. Kuzoe
Keyword(s):  
Life Cycle ◽  
West Africa ◽  
Rainy Season ◽  
Ivory Coast ◽  
Junior Synonym ◽  
Generic Character ◽  
Concurrent Infections ◽  
Host Parasite ◽  
Glossina Palpalis

Parasitic stages of Hexamermis glossinae from Glossina palpalis s. 1. and G. pallicera, which were collected immediately prior to the rainy season near Bouaflé, Ivory Coast, are described and illustrated. Specimens have an onchiostylet and were similar to Coccinellimermis coccinellae exochomi (Rubtzov, 1971) Rubtzov, 1978. Adults of Coccinellimermis are unknown. Possession of an onchiostylet is probably a specific rather than a generic character and Coccinellimermis is therefore a subjective junior synonym of Hexamermis. Results from 200 G. palpalis collected in a localized area showed that 5% of the flies were infected and that 12.3% of the males were parasitized compared with 2.1% of the females. Four of the 10 flies harbouring nematodes also harboured trypanosomes. Such concurrent infections were more frequent than expected since fewer than 10% of the 200 flies harboured trypanosomes. No correlation exists between age of the female flies, estimated by ovarian ageing, and length of the parasites. Infected females had fed and ovulated, and two carried a developing larva in the uterus. The life cycle of this mermithid is unknown, but all stages of the life cycle may occur where female flies larviposit.

Vegetation of seasonal rock pools on inselbergs situated in the savanna zone of the Ivory Coast (West Africa)

Flora ◽  
2000 ◽  
Vol 195 (3) ◽  
pp. 257-266 ◽  
Author(s):  
Axel Krieger ◽  
Stefan Porembski ◽  
Wilhelm Barthlott
Keyword(s):  
West Africa ◽  
Ivory Coast ◽  
Rock Pools ◽  
Savanna Zone

Prevalence of Antibody to Human T Cell Leukemia Virus Type 1 (HTLV-I) in Populations of Ivory Coast, West Africa

1989 ◽  
Vol 160 (3) ◽  
pp. 363-370 ◽  
Author(s):  
M. Verdier ◽  
F. Denis ◽  
A. Sangare ◽  
F. Barin ◽  
G. Gershy-Damet ◽  
...  
Keyword(s):  
T Cell ◽  
West Africa ◽  
Virus Type ◽  
Ivory Coast ◽  
Leukemia Virus ◽  
Cell Leukemia ◽  
Cell Leukemia Virus Type ◽  
Human T Cell ◽  
T Cell Leukemia Virus

scholarly journals Sugarcane Yield Forecast in Ivory Coast (West Africa) Based on Weather and Vegetation Index Data

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1459
Author(s):  
Edouard Pignède ◽  
Philippe Roudier ◽  
Arona Diedhiou ◽  
Vami Hermann N’Guessan Bi ◽  
Arsène T. Kobea ◽  
...  
Keyword(s):  
West Africa ◽  
Ivory Coast ◽  
Vegetation Index ◽  
Cultural Practices ◽  
Machine Learning Algorithms ◽  
Climate Data ◽  
Climate Services ◽  
Climate Risks ◽  
The North ◽  
Sugarcane Yield

One way to use climate services in the case of sugarcane is to develop models that forecast yields to help the sector to be better prepared against climate risks. In this study, several models for forecasting sugarcane yields were developed and compared in the north of Ivory Coast (West Africa). These models were based on statistical methods, ranging from linear regression to machine learning algorithms such as the random forest method, fed by climate data (rainfall, temperature); satellite products (NDVI, EVI from MODIS Vegetation Index product) and information on cropping practices. The results show that the forecasting of sugarcane yield depended on the area considered. At the plot level, the noise due to cultivation practices can hide the effects of climate on yields and leads to poor forecasting performance. However, models using satellite variables are more efficient and those with EVI alone may explain 43% of yield variations. Moreover, taking into account cultural practices in the model improves the score and enables one to forecast 3 months before harvest in 50% and 69% of cases whether yields will be high or low, respectively, with errors of only 10% and 2%, respectively. These results on the predictive potential of sugarcane yields are useful for planning and climate risk management in this sector.

Jihadist expansion into West Africa will take time

2021 ◽  
Keyword(s):  
West Africa ◽  
Ivory Coast ◽  
West African ◽  
African Countries ◽  
Content Type ◽  
Cross Border ◽  
Intelligence Sharing ◽  
Joint Operations ◽  
Hit And Run ◽  
Security Assistance

Significance While the overall number of incidents is fewer than a dozen since the rise of the region's jihadist insurgencies in the early 2010s, the trend lends credence to growing warnings about the jihadist threat to coastal West African countries. Concern has focused on Ivory Coast and Benin, but there is also nervousness about Ghana, Togo and even Senegal. Impacts Western governments will boost security assistance to coastal states. Intelligence sharing and joint operations will not forestall cross-border hit-and-run attacks. Most regional states will resort to security-focused responses whose abuses drive jihadist recruitment.

Guinea

2020 ◽  
Author(s):  
Marius Schneider ◽  
Vanessa Ferguson
Keyword(s):  
West Africa ◽  
Sierra Leone ◽  
Ivory Coast ◽  
Official Language ◽  
The South ◽  
Guinea Bissau ◽  
The North

Guinea, also sometimes referred as Guinea-Conakry, is found in West Africa. It is bordered by Guinea-Bissau, Senegal, and Mali in the north and Sierra Leone, Liberia, and Ivory Coast in the south. In 2016, Guinea had a population of 12.6 million over a territory of 245 860 square kilometres (km). Its capital and largest city is Conakry. The official language of Guinea is French, and the currency used is the Guinean franc (GNF).

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