Algae from Bioko Island (Equatorial Guinea, West Africa)

1995 ◽  
Vol 76 ◽  
pp. 79-95
Author(s):  
Susana Romo ◽  
Eloy Bécares ◽  
Pierre Compère
Keyword(s):  
West Africa ◽  
Equatorial Guinea ◽  
Bioko Island

scholarly journals Incidence of Plasmodium falciparum malaria infection in 6-month to 45-year-olds on selected areas of Bioko Island, Equatorial Guinea

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Vicente Urbano Nsue Ndong Nchama ◽  
Ali Hamad Said ◽  
Ali Mtoro ◽  
Gertrudis Owono Bidjimi ◽  
Marta Alene Owono ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Malaria Control ◽  
Malaria Infection ◽  
Age Groups ◽  
Control Measures ◽  
Equatorial Guinea ◽  
Safety And Efficacy ◽  
Bioko Island ◽  
Malaria Vaccines

Abstract Background Extensive malaria control measures have been implemented on Bioko Island, Equatorial Guinea over the past 16 years, reducing parasite prevalence and malaria-related morbidity and mortality, but without achieving elimination. Malaria vaccines offer hope for reducing the burden to zero. Three phase 1/2 studies have been conducted successfully on Bioko Island to evaluate the safety and efficacy of whole Plasmodium falciparum (Pf) sporozoite (SPZ) malaria vaccines. A large, pivotal trial of the safety and efficacy of the radiation-attenuated Sanaria® PfSPZ Vaccine against P. falciparum is planned for 2022. This study assessed the incidence of malaria at the phase 3 study site and characterized the influence of socio-demographic factors on the burden of malaria to guide trial design. Methods A cohort of 240 randomly selected individuals aged 6 months to 45 years from selected areas of North Bioko Province, Bioko Island, was followed for 24 weeks after clearance of parasitaemia. Assessment of clinical presentation consistent with malaria and thick blood smears were performed every 2 weeks. Incidence of first and multiple malaria infections per person-time of follow-up was estimated, compared between age groups, and examined for associated socio-demographic risk factors. Results There were 58 malaria infection episodes observed during the follow up period, including 47 first and 11 repeat infections. The incidence of malaria was 0.25 [95% CI (0.19, 0.32)] and of first malaria was 0.23 [95% CI (0.17, 0.30)] per person per 24 weeks (0.22 in 6–59-month-olds, 0.26 in 5–17-year-olds, 0.20 in 18–45-year-olds). Incidence of first malaria with symptoms was 0.13 [95% CI (0.09, 0.19)] per person per 24 weeks (0.16 in 6–59-month-olds, 0.10 in 5–17-year-olds, 0.11 in 18–45-year-olds). Multivariate assessment showed that study area, gender, malaria positivity at screening, and household socioeconomic status independently predicted the observed incidence of malaria. Conclusion Despite intensive malaria control efforts on Bioko Island, local transmission remains and is spread evenly throughout age groups. These incidence rates indicate moderate malaria transmission which may be sufficient to support future larger trials of PfSPZ Vaccine. The long-term goal is to conduct mass vaccination programmes to halt transmission and eliminate P. falciparum malaria.

The family Lecithoceridae (Lepidoptera, Gelechioidea) from Bioko Island (Equatorial Guinea), with descriptions of five new species

Zootaxa ◽  
2021 ◽  
Vol 4995 (3) ◽  
pp. 581-593
Author(s):  
KYU-TEK PARK ◽  
TIMM KARISCH
Keyword(s):  
New Species ◽  
Equatorial Guinea ◽  
Bioko Island ◽  
The Family ◽  
First Time ◽  
A New Species

Five new species belonging to the subfamily Torodorinae of Lecithoceridae are described from Bioko Island (Equatorial Guinea), based on specimens which were collected during a short expedition on the island by the second author in 1994. The new species are three species of the genus Thubdora Park, 2018 (T. biocoica sp. nov., T. vernaculella sp. nov., and T. angustiala sp. nov.), and a new species of Ptilothyris Walsingham, 1891and Dragmatucha Meyrick, 1908 respectively (Ptylothyris ruicheensis sp. nov.; and Dragmatucha vulcaniella sp. nov.). In addition, Thubdora bilobella Park, 2018 is reported for the first time from Equatorial Guinea. Images for adults and the genitalia of all species are given.  

scholarly journals Genetic diversity and allele frequencies of Plasmodium falciparum msp1 and msp2 in parasite isolates from Bioko Island, Equatorial Guinea

2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Jiang-Tao Chen ◽  
Jian Li ◽  
Guang-Cai Zha ◽  
Guang Huang ◽  
Zhi-Xiu Huang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Plasmodium Falciparum ◽  
Allele Frequencies ◽  
Equatorial Guinea ◽  
Bioko Island

scholarly journals The Effects of Nest Location and Beach Environment on Hatching Success for Leatherback (Dermochelys Coriacea) and Green (Chelonia Mydas) Sea Turtles on Bioko Island, Equatorial Guinea

2021 ◽  
Author(s):  
Callie A. Veelenturf ◽  
Elizabeth M. Sinclair ◽  
Peter Leopold ◽  
Frank V. Paladino ◽  
Shaya Honarvar
Keyword(s):  
Green Turtle ◽  
Hatching Success ◽  
Sea Turtles ◽  
Chelonia Mydas ◽  
Dermochelys Coriacea ◽  
Equatorial Guinea ◽  
Leatherback Turtles ◽  
Nest Location ◽  
Bioko Island ◽  
Elevation Range

Abstract Hatching success in sea turtles is hindered by a variety of biotic and abiotic factors. This study of the nesting ecology of leatherback (Dermochelys coriacea) and green (Chelonia mydas) sea turtles, investigated how several environmental factors and beach characteristics on Bioko Island, Equatorial Guinea influence sea turtle reproductive success. Average clutch hatching success was 40.4% for green turtles and 41.73% for leatherback turtles. For leatherback turtles, clutch elevation relative to the high tide line (HTL) was found to be the most influential factor in determining hatching success, highlighting the sensitivity of this species to sea level rise (SLR). Multiple linear regression analysis demonstrated that nest distance to vegetation and sand conductivity also played significant roles in leatherback clutch hatching success. For leatherback clutches, 33% percent of experimental nests were affected by inundation and 17% by predation. An optimum clutch elevation range for leatherback turtles was identified, where a distinct increase in hatching success was observed between -0.286 m to -0.0528 m above the HTL. For green sea turtles, 64% of experimental nests were affected by predation, confounding conclusions about the roles of environmental characteristics in green turtle hatching success. We propose further investigation into influential characteristics in green turtle nests and confirmation of the observed optimum elevation range on Bioko Island and other nesting grounds. Identified sensitivities of each species to SLR and beach characteristics will be used to encourage the government of Equatorial Guinea to consider the vulnerability of their resident turtle populations when planning for future coastal development.

scholarly journals Reduced Prevalence of Malaria Infection in Children Living in Houses with Window Screening or Closed Eaves on Bioko Island, Equatorial Guinea

PLoS ONE ◽  
2013 ◽  
Vol 8 (11) ◽  
pp. e80626 ◽  
Author(s):  
John Bradley ◽  
Andrea M. Rehman ◽  
Christopher Schwabe ◽  
Daniel Vargas ◽  
Feliciano Monti ◽  
...  
Keyword(s):  
Malaria Infection ◽  
Equatorial Guinea ◽  
Bioko Island ◽  
Window Screening

Elevational variation of dung beetle (Coleoptera: Scarabaeidae: Scarabaeinae) communities on Bioko Island, Equatorial Guinea

2019 ◽  
Vol 54 (3) ◽  
pp. 151-160
Author(s):  
Christie A Sukhdeo ◽  
T Keith Philips ◽  
Geraud C Tasse ◽  
Eric B Fokam ◽  
Katy Morgan
Keyword(s):  
Dung Beetle ◽  
Equatorial Guinea ◽  
Bioko Island ◽  
Elevational Variation

Contrasts in Livelihoods and Protein Intake between Commercial and Subsistence Bushmeat Hunters in Two Villages on Bioko Island, Equatorial Guinea

2013 ◽  
Vol 27 (3) ◽  
pp. 576-587 ◽  
Author(s):  
MARÍA GRANDE VEGA ◽  
BRUNO CARPINETTI ◽  
JESÚS DUARTE ◽  
JOHN E. FA
Keyword(s):  
Protein Intake ◽  
Equatorial Guinea ◽  
Bioko Island

scholarly journals Evidence for Suppression of Onchocerciasis Transmission in Bioko Island, Equatorial Guinea

2016 ◽  
Vol 10 (7) ◽  
pp. e0004829 ◽  
Author(s):  
Laura Moya ◽  
Zaida Herrador ◽  
Thuy Huong Ta-Tang ◽  
Jose Miguel Rubio ◽  
Maria Jesús Perteguer ◽  
...  
Keyword(s):  
Equatorial Guinea ◽  
Bioko Island
Sign in / Sign up

Export Citation Format

Share Document