scholarly journals Revision of Aresceutica (Orthoptera: Acrididae: Catantopinae) with comments on related genera

2018 ◽  
Vol 27 (2) ◽  
pp. 107-118 ◽  
Author(s):  
C.H.F. Rowell ◽  
N.D. Jago ◽  
C. Hemp
Keyword(s):  
West African ◽  
Valid Species ◽  
New Combinations ◽  
East African ◽  
The West ◽  
South Eastern ◽  
African Genus

The East African forest genus Aresceutica Karsch is revised; there are now four valid species, including A.nguruensis, sp. n. from south eastern Tanzania. Aresceutica is extremely similar to the West African genus Serpusia; it differs only in the form of the prosternal tubercle and the detail of the phallic morphology. Two new combinations are proposed: Ptemoblaxlemarineli Bolívar, 1911 = Aresceuticalemarineli (Bolívar, 1911), comb. n. and Aresceuticavansomereni Kevan, 1956 = Duviardiavansomereni (Kevan, 1956), comb. n.

Genetic diversity of the Bambara groundnut (Vigna subterranea (L.) Verdc.) as assessed by SSR markers

Genome ◽  
2011 ◽  
Vol 54 (11) ◽  
pp. 898-910 ◽  
Author(s):  
P. Somta ◽  
S. Chankaew ◽  
O. Rungnoi ◽  
P. Srinives
Keyword(s):  
Ssr Markers ◽  
Gene Diversity ◽  
Bambara Groundnut ◽  
West African ◽  
Azuki Bean ◽  
Vigna Subterranea ◽  
East African ◽  
The West ◽  
Legume Crop ◽  
Population Structure Analysis

Bambara groundnut ( Vigna subterranea (L.) Verdc.) is an important African legume crop. In this study, a collection consisting of 240 accessions was analyzed using 22 simple sequence repeat (SSR) markers. In total, 166 alleles were detected, with a mean of 7.59 alleles per locus. Allelic and gene diversities were higher in the west African and Cameroon/Nigeria regions with 6.68 and 6.18 alleles per locus, and 0.601 and 0.571, respectively. The genetic distance showed high similarity between west African and Cameroon/Nigeria accessions. Principal coordinate analyses and neighbor-joining analysis consistently revealed that the majority of west African accessions were grouped with Cameroon/Nigeria accessions, but they were differentiated from east African, central African, and southeast Asian accessions. Population structure analysis showed that two subpopulations existed, and most of the east African accessions were restricted to one subpopulation with some Cameroon/Nigeria accessions, whereas most of the west African accessions were associated with most of the Cameroon/Nigeria accessions in the other subpopulation. Comparison with SSR analysis of other Vigna cultigens, i.e., cultivated azuki bean ( Vigna angularis ) and mungbean ( Vigna radiata ), reveals that the mean gene diversity of Bambara groundnut was lower than azuki bean but higher than mungbean.

scholarly journals The distribution of advanced tongue root harmony and interior vowels in the Macro-Sudan Belt

2017 ◽  
Vol 2 ◽  
pp. 10 ◽  
Author(s):  
Nicholas Revett Rolle ◽  
Matthew Faytak ◽  
Florian Lionnet
Keyword(s):  
Central Africa ◽  
Strong Relationship ◽  
West African ◽  
East African ◽  
The West ◽  
Language Varieties ◽  
Phonological Features ◽  
Vowel Systems ◽  
Chi Squared ◽  
Heterogeneous Region

In this paper we investigate the distribution of vowel systems in the Macro-Sudan Belt, an area of Western and Central Africa proposed in recent areal work (Güldemann 2008, 2011; Clements & Rialland 2008). We report on a survey of 615 language varieties with entries coded for two phonological features: advanced tongue root (ATR) harmony and the presence of interior vowels (i.e. non-peripheral vowels, such as [ɨ ɯ ɜ ə ʌ …]). Our results show that the presence of ATR harmony in the Macro-Sudan Belt is limited to three separated zones: an Atlantic ATR Zone, a West African ATR Zone, and an East African ATR Zone, all geographically unconnected to one another. We additionally show that between the West and East African ATR Zones is a geographically extensive, genetically heterogeneous region of Central Africa where ATR harmony is systematically absent which we term the Central African ATR-less Zone. Our results also show a large region where phonemic and allophonic interior vowels are disproportionately prevalent, which we term the Central African Interior Vowel Zone. This zone noticeably overlaps with the Central African ATR-less Zone, suggesting that ATR and interiority have an antagonistic relationship. Chi-squared tests support the presence of a strong relationship between the two types of vowel contrasts.

scholarly journals A review of the West African genus Saraina (Araneae, Salticidae)

ZooKeys ◽  
2009 ◽  
Vol 16 ◽  
pp. 291-300 ◽  
Author(s):  
Galina Azarkina
Keyword(s):  
West African ◽  
The West ◽  
African Genus

scholarly journals New combinations in Cenchrus and Urochloa (Gramineae)

2019 ◽  
Vol 64 (3) ◽  
pp. 214-215
Author(s):  
A.P.M. van der Zon
Keyword(s):  
West African ◽  
New Combinations ◽  
The West ◽  
African Species

Recent taxonomic innovations have led to the inclusion of most of the Brachiaria species in Urochloa and of all Pennisetum species in Cenchrus. Many of the necessary combinations have been made for the West African species, but still nine new combinations and seven lectotypifications are presented here.

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