相关实验视频

Updated: May 22, 2025

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates

Published on: January 27, 2019

在气候变化下,查加斯病病媒介的潜在地理位移

Leandro Schlemmer Brasil^1,2, Divino Vicente Silvério³, José Orlando de Almeida Silva^2,4,5

¹Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso, Pontal do Araguaia, Mato Gross, Brazil.

Medical and veterinary entomology

|May 21, 2025

概括

到2080年,气候变化可能会将查加斯病载体扩散到巴西亚马逊地区. 这需要积极的公共卫生战略,以减轻脆弱人群中传播风险的增加.

科学领域:

环境科学环境科学
公共卫生公共卫生
热带医学是一种热带医学.

背景情况:

气候变化对生物多样性和载体传播疾病的动态有重大影响.
查加斯病是拉丁美洲的主要公共卫生问题,由三原子虫传播.
巴西的多样化生态系统和土地利用变化使其易受气候驱动的载体再分配的影响.

研究的目的:

评估在不同气候变化情景下,巴西55种三原子虫物种的潜在地理迁移.
预测到2050年和2080年矢量分布的变化.
评估对查加斯病传播风险的影响.

主要方法:

采用了生态利基模型.
利用了 11,640 个特有的三原子虫的记录.
两个代表性度路径 (SSP2-4.5和SSP5-8.5) 用于模拟2050年和2080年的未来气候条件.

主要成果:

预计到2050年,矢量分布将保持稳定.
预计到2080年,载体适应性的实质性转变将发生,特别是在巴西亚马逊地区,特别是在森林砍伐弧内.
扩大适合息地可能会增加新地区的查加斯病风险.

结论:

气候变化,特别是到2080年,可能会导致巴西亚马逊地区查加斯病载体的存在增加.
这种扩张对以前不受影响的弱势群体构成重大风险.
紧急实施适应性载体监测和公共卫生干预措施对于减轻未来风险至关重要.

关键词:

新热带地区是新热带地区.三重称号 (Triatominae) 是指三重称号.气候变化带来的影响医学昆虫学医学昆虫学载体的时间空间分布.

更多相关视频

Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus

Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus

Published on: May 31, 2020

Author Spotlight: Coproparasitoscopic Examination of Dog Stools for Control and Prevention of Zoonotic Parasite Diseases

Author Spotlight: Coproparasitoscopic Examination of Dog Stools for Control and Prevention of Zoonotic Parasite Diseases

Published on: December 15, 2023

相关概念视频

What is Climate?

What is Climate?

Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.

Global Climate Change

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.

Mutation, Gene Flow, and Genetic Drift

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).

Gene Flow

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.

Genetic Drift

Genetic Drift

Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.