Results 1 to 10 of about 343 (117)

From preventive eugenics to slippery eugenics: Population control and contemporary sterilisations targeted to indigenous peoples in Mexico. [PDF]

open access: yesSociol Health Illn, 2023
Abstract Eugenic ideas in Mexico were popularised after the Mexican Revolution (1910–1920) as a way of ‘modernising’ and ‘civilising’ the nation. As a result, eugenic ideas were able to linger and be maintained through different departments, institutions, and individuals from all disciplines. After eugenics was considered a pseudoscience, its practices
Sanchez-Rivera R.
europepmc   +2 more sources

Promising Potential of Lonchocarpus utilis against South American Myasis [PDF]

open access: yesPlants, 2019
Traditional medicine is especially important in the treatment of neglected tropical diseases because it is the way the majority of populations of affected countries manage primary healthcare.
Carmen X. Luzuriaga-Quichimbo   +4 more
doaj   +2 more sources

Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity. [PDF]

open access: yesJ Fish Biol, 2021
ABSTRACT Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018–19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's ...
Aguirre WE   +15 more
europepmc   +2 more sources

Divergent evolution of male aggressive behaviour: another reproductive isolation barrier in extremophile poeciliid fishes? [PDF]

open access: yesInt J Evol Biol, 2012
Reproductive isolation among locally adapted populations may arise when immigrants from foreign habitats are selected against via natural or (inter‐)sexual selection (female mate choice). We asked whether also intrasexual selection through male‐male competition could promote reproductive isolation among populations of poeciliid fishes that are locally ...
Bierbach D   +6 more
europepmc   +2 more sources

Gradient evolution of body colouration in surface- and cave-dwelling Poecilia mexicana and the role of phenotype-assortative female mate choice. [PDF]

open access: yesBiomed Res Int, 2013
Ecological speciation assumes reproductive isolation to be the product of ecologically based divergent selection. Beside natural selection, sexual selection via phenotype‐assortative mating is thought to promote reproductive isolation. Using the neotropical fish Poecilia mexicana from a system that has been described to undergo incipient ecological ...
Bierbach D   +16 more
europepmc   +2 more sources

Medicinal Plants from North and Central America and the Caribbean Considered Toxic for Humans: The Other Side of the Coin. [PDF]

open access: yesEvid Based Complement Alternat Med, 2017
The consumption of medicinal plants has notably increased over the past two decades. People consider herbal products as safe because of their natural origin, without taking into consideration whether these plants contain a toxic principle. This represents a serious health problem.
Alonso-Castro AJ   +7 more
europepmc   +2 more sources

Potential of Traditional Knowledge of Plants in the Management of Arthropods in Livestock Industry with Focus on (Acari) Ticks. [PDF]

open access: yesEvid Based Complement Alternat Med, 2017
Antitick plants and related ethnoknowledge/ethnopractices with potential for integrated tick control and management strategies to improve livestock production are reviewed. About 231 plants reviewed showed a variety of bioactive properties, namely, being toxic, repellent, antifeedant, and antiovipositant and ability to immobilize target tick species ...
Wanzala W.
europepmc   +2 more sources

EFECTO DEL BARBASCO (Lonchocarpus nicou) EN EL CONTROL DE ECTOPARÁSITOS EN RATONES DE LABORATORIO [PDF]

open access: yesInvestigación Valdizana, 2017
El objetivo de la presente investigación fue evaluar el efecto de barbasco (Lonchocarpus nicou) en el control de ectopárasitos en ratones de laboratorio. Se llevó a cabo un estudio experimental, comparativo y longitudinal.
Wilder Javier Martel Tolentino   +1 more
doaj   +1 more source

Estudio de la extracción del follaje de Barbasco (Lonchocarpus nicou) como fuente biocida (en condiciones de la Amazonía en Ecuador)

open access: yesRevista Ciencias Técnicas Agropecuarias, 2013
En el presente trabajo se hace referencia al estudio realizado en la obtención de un extracto biocida a partir del follaje de Loncho- carpus nicou. El estudio fotoquímico revela la presencia de flavonoides, saponinas, coumarinas y otros, en los diversos ...
Deisy Marlene Torres Morocho   +3 more
doaj   +1 more source

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