Results 11 to 20 of about 4,051 (172)

Guyana: Oil, Internal Disputes, the USA and Venezuela [PDF]

open access: yesContexto Internacional, 2023
Abstract: Guyana has a strategic geographic position in the Amazon and the Greater Caribbean area, as revealed in the strategic thinking and military presence of the United States (USA). Its territory also possesses abundant natural resources, especially
Raphael Padula   +3 more
doaj   +2 more sources

Anopheles species complexes from Guyana and Venezuela malaria endemic areas using COI sequences [PDF]

open access: yesMalaria Journal
Background Effective interventions for controlling Anopheles malaria vectors depend on accurately identifying the species. Venezuela has the highest malaria prevalence in the region of the Americas; however, there is very limited knowledge about the ...
Yasmin Rubio-Palis   +3 more
doaj   +2 more sources

The native species of Callianthe (Malvaceae, Malvoideae) in northern South America (Colombia, Venezuela, the Guianas and adjacent Brazil) [PDF]

open access: yesPhytoKeys
The native species of Callianthe Donnell (Malvaceae, Malvoideae) in northern South America (Colombia, Venezuela, the Guianas and adjacent Brazil) are reviewed. Five species are recognised, of which one, C.
Laurence J. Dorr
doaj   +4 more sources

Trends in Mortality Due to Stroke in South America between 1990 and 2019 [PDF]

open access: yesEpidemiologia
Stroke is the second leading cause of death and disability in Latin America; however, few epidemiological studies have been conducted in South America.
Alexandre Castelo Branco Araujo   +9 more
doaj   +2 more sources

Nineteen new species of Desmopachria Babington, 1841 (Coleoptera, Adephaga, Dytiscidae, Hydroporinae, Hyphydrini) with notes on the taxonomy of the genus [PDF]

open access: yesZooKeys, 2022
Nineteen new species of Desmopachria Babington, 1841 are described from multiple species groups. Two new species groups are erected, the Desmopachria apicodente species group and the Desmopachria bifurcita species group. Desmopachria divergens sp.
Kelly B. Miller
doaj   +3 more sources

Revision of the Neotropical water scavenger beetle genus Novochares Girón & Short (Coleoptera, Hydrophilidae, Acidocerinae) [PDF]

open access: yesZooKeys, 2023
The water scavenger beetle genus Novochares Girón & Short, 2021 is revised using a combination of adult morphological and DNA sequence data. Thirty-eight new species are described: Novochares aperito sp. nov. (Bolivia), N. baca sp. nov.
Andrew Edward Z. Short   +1 more
doaj   +3 more sources

Review of the genus Chasmogenus Sharp, 1882 of northeastern South America with an emphasis on Venezuela, Suriname, and Guyana (Coleoptera, Hydrophilidae, Acidocerinae) [PDF]

open access: yesZooKeys, 2020
The water scavenger beetle genus Chasmogenus Sharp, 1882 is reviewed in northeastern South America using an integrative approach that combines adult morphology and molecular data from the gene cytochrome c oxidase I (COI).
Rachel R. Smith, Andrew Edward Z. Short
doaj   +3 more sources

Cross-border malaria in Northern Brazil

open access: yesMalaria Journal, 2021
Background Cross-border malaria is a major barrier to elimination efforts. Along the Venezuela-Brazil-Guyana border, intense human mobility fueled primarily by a humanitarian crisis and illegal gold mining activities has increased the occurrence of cross-
Nicholas J. Arisco   +2 more
doaj   +1 more source

Three additional new genera of acidocerine water scavenger beetles from the Guiana and Brazilian Shield regions of South America (Coleoptera, Hydrophilidae, Acidocerinae) [PDF]

open access: yesZooKeys, 2019
Recent study of the water scavenger beetle subfamily Acidocerinae in the Neotropical region has uncovered numerous undescribed species that are not able to be placed in existing genera.
Jennifer C. Girón   +1 more
doaj   +3 more sources

Fuites frontalières entre le Guyana et le Venezuela : migrations et contrebande dans un village amérindien

open access: yesCahiers des Amériques Latines, 2020
Based on fieldwork conducted in an Amerindian village in Guyana, located close to Venezuela, this article investigates how the border exists for local residents.
Olivier Allard
doaj   +1 more source

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