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的垂直T-迷宫的选择含量,节肢动物响应加味剂
的垂直T-迷宫的选择含量,节肢动物响应加味剂
JoVE Journal
Neuroscience
This content is Free Access.
JoVE Journal Neuroscience
Vertical T-maze Choice Assay for Arthropod Response to Odorants

的垂直T-迷宫的选择含量,节肢动物响应加味剂

Full Text
15,438 Views
06:13 min
February 14, 2013

DOI: 10.3791/50229-v

Lukasz Stelinski1, Siddharth Tiwari1

1Entomology and Nematology Department,University of Florida

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

Overview

This article describes a vertical T-maze olfactometer designed to assess the behavioral responses of arthropods to various odorants. The device enables the measurement of both attraction and repulsion to different odor fields.

Key Study Components

Area of Science

  • Behavioral ecology
  • Olfactory response in insects
  • Experimental design in entomology

Background

  • The olfactometer is a tool for studying insect behavior in response to odors.
  • It allows researchers to create controlled environments for testing insect preferences.
  • Understanding these behaviors can provide insights into pest management and ecological interactions.
  • Previous studies have utilized similar setups to investigate various insect responses.

Purpose of Study

  • To measure the behavioral responses of insects to different odorants.
  • To determine the effectiveness of attractants and repellents.
  • To establish a reliable method for assessing insect choices in a controlled setting.

Methods Used

  • Construction of a vertical T-maze olfactometer with two odor ports.
  • Introduction of test subjects (CIDs) into the maze for observation.
  • Control tests to eliminate bias from environmental factors.
  • Recording of insect choices over a set observation period.

Main Results

  • Insects displayed distinct preferences for certain odors over others.
  • Statistical analysis confirmed significant differences in responses to various odor combinations.
  • The setup effectively measured both attraction and repulsion behaviors.
  • Results contribute to understanding insect olfactory mechanisms.

Conclusions

  • The vertical T-maze olfactometer is a valuable tool for studying insect behavior.
  • Findings can inform pest control strategies by identifying effective attractants and repellents.
  • Future research can expand on these methods to explore other insect species and odorants.

Frequently Asked Questions

What is the purpose of the olfactometer?
The olfactometer is used to measure insect behavioral responses to different odors.
How are the insects introduced into the maze?
Insects are placed in the maze and observed for their choice between odor fields.
What types of odors can be tested?
Various attractants and repellents can be tested using the olfactometer.
How is bias eliminated in the experiments?
Control tests with clean air and solvent are conducted to ensure no positional bias affects results.
What are the main findings of the study?
Insects showed significant preferences for certain odors, indicating their behavioral responses to olfactory cues.

垂直,T-迷宫的嗅觉测定的节肢动物的行为反应。嗅觉让实验者衡量选择考试科目进行时,受到两个潜在的气味领域。与此装置可以测量从气味分子的吸引力和排斥力。

该程序的总体目标是测量响应气味的 CID 行为。这是通过首先制作垂直 TMA 来实现的,其中不同的气味选择与不同的空间区域相关联。第二步是将 CID 引入 temaze。

接下来,观察 CID 一段时间,以查看它们选择迷宫的哪个分支,并记录他们的选择。最终,垂直 temas 选择测定用于揭示昆虫对气味剂的行为反应 垂直 TE masal。Spectometer 利用昆虫的自然行为来测试昆虫对各种引诱剂和驱虫剂的反应。

作为第一步,找到一个温度受控的房间或环境室,可以在其中进行实验组装和检测。通过组装定制的双端口嗅觉计开始构建实验装置。嗅觉计由一根 30 厘米的玻璃管组成,该玻璃管分为两个独立的端口,特氟龙条形成 tase。

每一半都类似于一个二选一式嗅觉计的臂,使测试对象能够在两个潜在的气味场之间进行选择。为了获得最佳的光扩散,请使用不透明容器来封闭实验组件。垂直安装 TMA 嗅觉计后,将其置于荧光 900 luxe 灯泡下方,并将昆虫入口连接到嗅觉计。

气味源位于固相微萃取源室中。使用 Teflon 玻璃管连接器将嗅觉计臂连接到气味源。接下来,将空气输送系统连接到处于恒定压力下的加湿和碳净化空气的外部源。

为了制备气味源,请将所需的化学样品溶解在适当的溶剂中。将其移液到棉芯上。此外,用溶剂浸渍棉芯,仅用于制备对照样品。

将处理过的棉芯和对照棉芯包裹在实验室纸巾中,以防止玻璃器皿受到严重污染。当需要样品时,将其放入其中一个源室中。在有气味测试之前,将 Cates 暴露在 T MAs 嗅觉计中的清洁空气与清洁空气以及溶剂与清洁空气中。

这用于验证测试对象上不存在位置偏差或有效溶剂。为了测试清洁空气与清洁空气,通过连接到空气输送系统的两台泵启动净化和加湿空气流过空源室。通过嗅觉计的两个臂保持每分钟 0.1 升的气流。

确保所有观测都将在标准温度和相对湿度下进行。现在通过在腔室中放置大约 20 个 SIDS 来开始此对照测试。观察 SIDS 100 到 300 秒之间的预定间隔。

重量使它们能够对环境做出反应。经过一段时间后,记录 CID 对测试环境的响应。为穿过分隔线最低点上方 T aze 左侧的每个 SLI 选择左臂得分 对右臂进行类似评分。

如果没有其他选择,则对释放臂的选择进行评分。记录完所有响应后,使用吸气器收集 CID。通过将溶剂吸芯引入其中一个源室,对溶剂与清洁空气进行类似的测试。

在

控制运行后,对观测值使用一组不同的 CID。在每次生物测定开始时,通过将气味源随机分配给嗅觉计的一个臂来开始气味测试。至少每 10 名测试对象分析后反转此位置,以消除潜在的位置偏差。

同样,检查气流、温度和湿度是否没有变化。每次运行将一个或多个 sates 引入腔室 对于此处的测试,大约引入了 10 个。测试每种气味组合最少 30 到 120 名测试对象的响应。

观察 sates 100 到 300 秒,让它们表现出行为反应。应事先确定时间间隔。当测试对象带着气味进入嗅觉计臂时,通过对气味选择或控制臂选择或释放臂选择进行评分,记录测试对象的手臂选择。

最后,记录完所有观察结果后,在使用装置进行不同的气味处理之前,使用抽吸器去除 CID,用 2%SOAP 溶液彻底清洁嗅觉计和连接管,并在 200 华氏度下烘烤玻璃组件 24 小时。该图选择了亚洲柑橘对柑橘寄主植物挥发物与清洁空气控制的反应。该图在顶部和底部图中选择了亚洲柑橘类柑橘类挥发物与与二甲基二硫化物 A 共释放的柑橘挥发物的响应。

用字母标记的列在统计上彼此之间具有显著差异,置信度大于 95%。根据单向方差分析,后跟 tui's。老实说,显着差异测试在他们的设计中非常广泛,并且通常是为正在调查的特定昆虫问题量身定制的。

本文介绍了垂直方向 T 型塑料的设计和使用。反射计用于测量昆虫对各种气味的反应。

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