scholarly journals A Study on Bird Diversity and Abundance in a Lowland of the Centre Region of Cameroon (Ekoko II village) confirm High Diversity in the Congo Basin Forest and a Greater Dominance in the Distribution of Species in the Lowlands

2019 ◽  
Keyword(s):  
Congo Basin ◽  
Bird Diversity ◽  
Centre Region ◽  
Congo Basin Forest ◽  
High Diversity

scholarly journals Coronavirus surveillance in Congo basin wildlife detects RNA of multiple species circulating in bats and rodents

2020 ◽  
Author(s):  
Charles Kumakamba ◽  
Fabien R. Niama ◽  
Francisca Muyembe ◽  
Jean-Vivien Mombouli ◽  
Placide Mbala Kingebeni ◽  
...  
Keyword(s):  
Pcr Primers ◽  
Congo Basin ◽  
Wild Animals ◽  
Rna Sequences ◽  
Host Diversity ◽  
Frequent Contact ◽  
Human Contact ◽  
Multiple Species ◽  
Ongoing Surveillance ◽  
High Diversity

AbstractCoronaviruses play an important role as pathogens of humans and animals, and the emergence of epidemics like SARS, MERS and COVID-19 is closely linked to zoonotic transmission events primarily from wild animals. Bats have been found to be an important source of coronaviruses with some of them having the potential to infect humans, with other animals serving as intermediate or alternate hosts or reservoirs. Host diversity may be an important contributor to viral diversity and thus the potential for zoonotic events. To date, limited research has been done in Africa on this topic, in particular in the Congo Basin despite frequent contact between humans and wildlife in this region. We sampled and, using consensus coronavirus PCR-primers, tested 3,561 wild animals for coronavirus RNA. The focus was on bats (38%), rodents (38%), and primates (23%) that posed an elevated risk for contact with people, and we found coronavirus RNA in 121 animals, of which all but two were bats. Depending on the taxonomic family, bats were significantly more likely to be coronavirus RNA-positive when sampled either in the wet (Pteropodidae and Rhinolophidae) or dry season (Hipposideridae, Miniopteridae, Molossidae, and Vespertilionidae). The detected RNA sequences correspond to 15 Alpha- and 6 Beta-coronaviruses, with some of them being very similar (>95% nucleotide identities) to known coronaviruses and others being more unique and potentially representing novel viruses. In seven of the bats, we detected RNA most closely related to sequences of the human common cold coronaviruses 229E or NL63 (>80% nucleotide identities). The findings highlight the potential for coronavirus spillover, especially in regions with a high diversity of bats and close human contact, and reinforces the need for ongoing surveillance.

scholarly journals Bird Survey of the Abobo-Etetak Hill (Yaounde, Cameroon) and a Glance on the Avifaunistic Diversity of this Hill (Abobo-Etetak)

2017 ◽  
Vol 10 (1) ◽  
pp. 31-41
Author(s):  
Billy Nguembock ◽  
Mahamat Sali ◽  
Kemtchouan William ◽  
Azang Esther Diane Olivia ◽  
Guehoada Yollande ◽  
...  
Keyword(s):  
New Species ◽  
Human Activities ◽  
Diversity Index ◽  
New Genera ◽  
Equal Distribution ◽  
Bird Survey ◽  
Centre Region ◽  
High Diversity

Introduction: We conducted a preliminary bird survey in the Abobo-Etetak hill (Yaounde, Cameroon). Methods: To carry out this survey, we used the mist-netting method and we captured birds over a period of six months. To study the distribution of this avifauna in their life environment, we performed several analyses to obtain various diversity indexes such as implemented in softwares SAS/STAT and PAST. Results: Three hundred and eleven individuals were captured belonging to 21 passerine and non-passerine families distributed into 39 genera and 51 species. We recorded new species for the area: Anthus brachyurus, Cinnyris reichenowi, Euplectes gierowii, Hirundo fuligula, Nicator vireo, Pogoniulus atroflavus and Pogoniulus subsulphureus, and Terpsiphone rufocinerea. Species documented were from the families Lybiidae, Motacillidae, Nectariniidae, Hirundinidae, Nicatoridae, Ploceidae and Monarchidae. Species from two new genera were recorded, Cinnyris (Sunbirds) and Terpsiphone (Monarchs). Estimated diversity index values show that the Abobo-Etetak hill exhibits high avifaunistic diversity. Conclusion: Our results found an absence of the supremacy of one species (H’=3.34) and the value of the Equitability index (J’=0.85) suggests an equal distribution of the individuals across species. With the obtained value of the index of Simpson diversity of 0.95, our result suggests high diversity within the Abobo-Etetak avifauna, which could be explained by luxuriant vegetation that is present all year round. Human activities have had an impact on the diversity of this avifauna with the presence of some genera sampled (Ploceus, Passer, Estrilda, Pycnonotus and Spermophaga) but the relic Centre Region of Cameroon which preserves its originality offers on the whole favourable conditions to birds.

scholarly journals Coronavirus surveillance in wildlife from two Congo basin countries detects RNA of multiple species circulating in bats and rodents

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0236971
Author(s):  
Charles Kumakamba ◽  
Fabien R. Niama ◽  
Francisca Muyembe ◽  
Jean-Vivien Mombouli ◽  
Placide Mbala Kingebeni ◽  
...  
Keyword(s):  
Pcr Primers ◽  
Congo Basin ◽  
Wild Animals ◽  
Rna Sequences ◽  
Host Diversity ◽  
Frequent Contact ◽  
Human Contact ◽  
Multiple Species ◽  
Ongoing Surveillance ◽  
High Diversity

Coronaviruses play an important role as pathogens of humans and animals, and the emergence of epidemics like SARS, MERS and COVID-19 is closely linked to zoonotic transmission events primarily from wild animals. Bats have been found to be an important source of coronaviruses with some of them having the potential to infect humans, with other animals serving as intermediate or alternate hosts or reservoirs. Host diversity may be an important contributor to viral diversity and thus the potential for zoonotic events. To date, limited research has been done in Africa on this topic, in particular in the Congo Basin despite frequent contact between humans and wildlife in this region. We sampled and, using consensus coronavirus PCR-primers, tested 3,561 wild animals for coronavirus RNA. The focus was on bats (38%), rodents (38%), and primates (23%) that posed an elevated risk for contact with people, and we found coronavirus RNA in 121 animals, of which all but two were bats. Depending on the taxonomic family, bats were significantly more likely to be coronavirus RNA-positive when sampled either in the wet (Pteropodidae and Rhinolophidae) or dry season (Hipposideridae, Miniopteridae, Molossidae, and Vespertilionidae). The detected RNA sequences correspond to 15 alpha- and 6 betacoronaviruses, with some of them being very similar (>95% nucleotide identities) to known coronaviruses and others being more unique and potentially representing novel viruses. In seven of the bats, we detected RNA most closely related to sequences of the human common cold coronaviruses 229E or NL63 (>80% nucleotide identities). The findings highlight the potential for coronavirus spillover, especially in regions with a high diversity of bats and close human contact, and reinforces the need for ongoing surveillance.

scholarly journals Addressing constraints in promoting wild edible plants’ utilization in household nutrition: case of the Congo Basin forest area

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Precillia Ijang Tata Ngome ◽  
Charlie Shackleton ◽  
Anne Degrande ◽  
Julius Chupezi Tieguhong
Keyword(s):  
Forest Area ◽  
Congo Basin ◽  
Wild Edible Plants ◽  
Edible Plants ◽  
Congo Basin Forest

scholarly journals A Framework for Assessing Conservation and Development in a Congo Basin Forest Landscape

2010 ◽  
Vol 3 (3) ◽  
pp. 262-281 ◽  
Author(s):  
Dominique Endamana ◽  
Agni Klintuni Boedhihartono ◽  
Bruno Bokoto ◽  
Louis Defo ◽  
Antoine Eyebe ◽  
...  
Keyword(s):  
Congo Basin ◽  
Forest Landscape ◽  
Conservation And Development ◽  
Congo Basin Forest

scholarly journals Diversité Floristique Des Ligneux Et Structure Des Formations À Garcinia Kola Heckel Dans Les Régions Du Centre Et De l’Est, Cameroun

2018 ◽  
Vol 14 (21) ◽  
pp. 451
Author(s):  
Kamga Yanick Borel ◽  
Nguetsop Victor François ◽  
Momo Solefack Marie Caroline ◽  
Riera Bernard
Keyword(s):  
Sustainable Management ◽  
Woody Plants ◽  
Congo Basin ◽  
Eastern Region ◽  
Garcinia Kola ◽  
Mean Values ◽  
Significance Level ◽  
East Region ◽  
Centre Region ◽  
Garcinia Kola Heckel

In order to find the strategies to ensure the sustainable management of natural’s resources and especially woody plants in the Congo Basin, a study was carried out on the floristic diversity of woody plants and the structure of Garcinia kola formations in the Centre and East regions of Cameroon. A total of 39 quadrats of 40 m x 40 m were installed in the Garcinia kola formations in these two regions. In each plot, we identified and counted all individuals with a dbh ≥ 10 cm. Seedlings of G. kola (dbh<10 cm) were also counted in all the plots. The height and diameter of each individual were measured. ANOVA was used to compare the density averages of the different plots, and the DUNCAN test at 5% significance level (XLSTAT 2017) was used to separate these mean values. This study confirms that the Clusiaceae (G. kola) forms the floristic background of the stand studied. The surveys revealed a total of 196 species, 156 species (H '= 2.98) and 68 species (H' = 2.13), respectively, identified in the East and Centre among the population of individuals showing dbh ≥ 10 cm. They were distributed into 124 genera and 46 families. The most diversified families in G. kola formations are Euphorbiaceae, Fabaceae, Meliaceae, Sterculiaceae, Moraceae, Anacardiaceae, Apocynaceae, Annonaceae, Rutaceae, Rubiaceae, and Clusiaceae. The average standing density of G. kola varies from 6.51 (East Region) to 40.72 (Centre Region) stems per hectare. The low density observed in the localities of the eastern region can be explained by the pressure exerted on this species in the natural environment linked mostly to methods of exploitation.

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