Quantifying Fitness Costs in Transgenic <em>Aedes aegypti</em> Mosquitoes

Adeline E. Williams; Irma Sanchez-Vargas; Lindsay E. Martin; Ines Martin-Martin; Susi Bennett; Ken E. Olson; Eric Calvo

doi:10.3791/65136

JoVE Journal
Biology

A subscription to JoVE is required to view this content. Sign in or start your free trial.

JoVE Journal Biology

Quantifying Fitness Costs in Transgenic Aedes aegypti Mosquitoes

量化转基因埃及伊蚊的适应性成本

Full Text

1,260 Views

09:41 min

September 15, 2023

DOI: 10.3791/65136-v

Adeline E. Williams^1,2, Irma Sanchez-Vargas¹, Lindsay E. Martin^2,3, Ines Martin-Martin^2,4, Susi Bennett¹, Ken E. Olson¹, Eric Calvo²

¹Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology,Colorado State University, ²Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases,National Institutes of Health, ³Department of Biological Sciences,Vanderbilt University, ⁴National Center for Microbiology,Instituto de Salud Carlos III

Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

This study presents a detailed protocol for measuring various fitness parameters in Aedes aegypti mosquitoes, crucial for assessing the impact of transgenic modifications. The parameters include fecundity, wing size, fertility, and adult longevity, which serve as indicators of reproductive success.

Key Study Components

Research Area

Transgenic mosquito fitness assessment
Reproductive success
Population dynamics of Aedes aegypti

Background

Importance of fitness metrics in evaluating mosquito populations
Standard measurements commonly used in entomological studies
Significance of Aedes aegypti as a vector for diseases

Methods Used

Egg hatching, larval feeding, and adulthood assessment
Aedes aegypti as the model system
Stereoscopic analysis, genetic crossings, and statistical evaluations

Main Results

Detailed quantification of fecundity, wing size, and other life parameters
Variation in fitness metrics between transgenic and wild type mosquitoes
Clear methodology for tracking mosquito development and reproductive results

Conclusions

The study demonstrates essential techniques for evaluating mosquito fitness, vital for ecological research
Findings contribute to understanding transgenic mosquito impacts on populations

Frequently Asked Questions

What species is the focus of this research?

The research focuses on Aedes aegypti mosquitoes.

Why are fitness parameters important?

They indicate reproductive success and overall population health.

What methods were used to assess mosquito fitness?

Methods include assessing fecundity, wing size, fertility, and longevity of mosquitoes.

How were mating strategies implemented?

Mating involved crossing transgenic males with virgin wild type females in controlled conditions.

What is the significance of wing size measurement?

Wing size is a critical indicator of mosquito fitness and overall health.

Did the study track mortality rates?

Yes, the longevity of male and female mosquitoes was tracked throughout the study.

What implications does this research have?

It helps understand the ecological impact of transgenic mosquitoes on the environment.

本方案描述了如何测量 埃及伊蚊 的常见生活参数数据，包括繁殖力、翅膀大小、生育能力、性别比例、生存能力、发育时间、雄性贡献和成虫寿命。这些测量结果可用于评估转基因蚊子的适应性。

该协议展示了标准测量值，反映了埃及伊蚊的适应性，之所以选择这些适应性参数，是因为它们反映了繁殖成功，易于测量，并且通常在文献中报道。首先，将蛋纸放入无菌水中过夜，以孵化转基因和野生型蚊子。通过提供几滴磨碎的鱼食物浆液，让幼虫随意进食。

为确保成虫是处女，一旦蛹出现，就按性别将蛹分开，将蛹移至玻璃显微镜载玻片上，并用组织去除多余的水以固定蛹。在立体镜下以两倍到四倍的放大倍率，使用细尖的画笔，将蛹面朝上放置。然后目视分析尾巴的生殖叶形状差异。

View the full transcript and gain access to thousands of scientific videos

Explore More Videos

关键词:埃及伊蚊蚊子健身转基因繁殖力蛋纸幼虫发育蛹分离翅膀测量