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.

A record of Disparalona hamata (Birge, 1879) (Cladocera: Chydoridae) in phytotelmata of Tillandsia aguascalentensis Gardner, 1984 (Poales: Bromeliaceae)

Zootaxa ◽  
2019 ◽  
Vol 4567 (2) ◽  
pp. 347
Author(s):  
ANNA N. NERETINA ◽  
PETR G. GARIBIAN ◽  
MARTÍN ROMERO ◽  
DEMETRIA M. MONDRAGÓN ◽  
MARCELO SILVA-BRIANO
Keyword(s):  
Life Cycle ◽  
West Africa ◽  
Junior Synonym ◽  
Water Reservoirs ◽  
Full Life Cycle ◽  
Full Life

Bromeliads (Bromeliaceae) are an extremely diverse family of the angiosperms widely distributed in the tropical and subtropical regions of the Americas and West Africa. They often serve as phytotelmata, accumulating rainwater between leaves. Such water reservoirs can be inhabited by diverse organisms. But to date not much attention is paid to inventory of these organisms, with careful identification of each taxon. We found a microcrustacean Disparalona hamata (Birge, 1879) (Crustacea: Cladocera) in the bromeliad Tillandsia aguascalentensis Gardner, 1984 in Mexico. Investigated population included parthenogenetic females, gamogenetic females and males. Hereby the population apparently can pass the full life cycle under conditions of phytotelmata. Along with ecological observations, we provide additional taxonomic notes on the genus Disparalona Fryer, 1968 itself. Recently a series of morphological revisions was conducted for this genus. It was subdivided into two subgenera: Disparalona s.str. and Mixopleuroxus Hudec, 2010. But, in fact, the second taxon is a junior synonym of Leptorhynchus Daday, 1905. In this regard here we provide an updated list of taxonomic synonyms for the subgenus Leptorhynchus. 

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.

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 Biology of the Wild SilkmothAnaphe panda(Boisduval) in the Kakamega Forest of Western Kenya

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
N. Mbahin ◽  
S. K. Raina ◽  
E. N. Kioko ◽  
J. M. Mueke
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Rainy Season ◽  
Dry Season ◽  
Developmental Period ◽  
The Other ◽  
Western Kenya ◽  
Kakamega Forest ◽  
Pupal Period ◽  
Indigenous Forest

A study on the life cycle of the silkmothAnaphe panda(Boisduval) was conducted in two different habitats of the Kakamega Forest in western Kenya: Ikuywa, an indigenous forest, and Isecheno, a mixed indigenous forest. Eggs were laid in clusters, and the incubation period ranged from 40 to 45 days. Larvae fed onBridelia micrantha(Hochst) and passed through seven instars. The developmental period took between 83 to 86 days in the dry season and 112 to118 days in the rainy season. The pupal period ranged between 158 and 178 days in the rainy season and, on the other hand, between 107 and 138 days in the dry season. But the later caught up in development with those that formed earlier. Moths emerged from mid-October until mid-May. Longevity of adultAnaphe pandamoths took between 4 and 6 days, but generally females seemed to live longer than males. The moth also seems to have higher lifespan in the indigenous forest compared to the mixed indigenous forest.

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.

Sign in / Sign up

Export Citation Format

Share Document