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Related Concept Videos

Factors Affecting Body Temperature01:28

Factors Affecting Body Temperature

As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may  include:
Increased Body Temperature01:25

Increased Body Temperature

A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in response to an infection or illness.
Factors Influencing Microbial Growth: Temperature01:27

Factors Influencing Microbial Growth: Temperature

Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Effects of Temperature on Free Energy02:11

Effects of Temperature on Free Energy

The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or the other depending upon the temperature of the substance in question. Likewise, some chemical reactions can also exhibit temperature-dependent spontaneities. To illustrate this concept, the equation relating free energy change to the enthalpy and entropy changes for the process is considered:
Patterns of Fever01:26

Patterns of Fever

Before understanding the types and patterns of fever, it is essential to know its phases.

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Related Experiment Video

Updated: May 22, 2026

Determining Temperature Preference of Mosquitoes and Other Ectotherms
05:31

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Published on: September 28, 2022

Complex effects of temperature on mosquito immune function.

C C Murdock1, Krijn P Paaijmans, Andrew S Bell

  • 1Department of Entomology, Center for Infectious Disease Dynamics, Merkle Lab, University Park, PA 16802, USA. ccm15@psu.edu

Proceedings. Biological Sciences
|May 18, 2012
PubMed
Summary
This summary is machine-generated.

Environmental temperature significantly impacts mosquito immunity and host-parasite interactions. Understanding these complex effects is crucial for predicting vector behavior and improving malaria control strategies.

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Inoculating Anopheles gambiae Mosquitoes with Beads to Induce and Measure the Melanization Immune Response
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Inoculating Anopheles gambiae Mosquitoes with Beads to Induce and Measure the Melanization Immune Response

Published on: January 12, 2017

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Last Updated: May 22, 2026

Determining Temperature Preference of Mosquitoes and Other Ectotherms
05:31

Determining Temperature Preference of Mosquitoes and Other Ectotherms

Published on: September 28, 2022

Inoculating Anopheles gambiae Mosquitoes with Beads to Induce and Measure the Melanization Immune Response
08:24

Inoculating Anopheles gambiae Mosquitoes with Beads to Induce and Measure the Melanization Immune Response

Published on: January 12, 2017

Area of Science:

  • Ecological immunology
  • Vector biology
  • Mosquito immunology

Background:

  • Ecological immunology reveals environmental impacts on host immunity and host-parasite interactions.
  • Mosquito immunology research has limitedly applied ecological immunology principles.
  • Most mechanistic studies are conducted under single environmental conditions, neglecting real-world variability.

Purpose of the Study:

  • To investigate how environmental temperature influences cellular and humoral immune responses in the malaria vector, Anopheles stephensi.
  • To understand the complex interactions between temperature, time, and immune challenge on mosquito immune responses.

Main Methods:

  • Quantified immune gene expression (nitric oxide synthase, cecropin, defensin) in Anopheles stephensi.
  • Assessed cellular immune responses including melanization and phagocytosis.
  • Exposed mosquitoes to varying temperatures and immune challenges over time.

Main Results:

  • Nitric oxide synthase expression peaked at 30°C.
  • Humoral melanization, phagocytosis, and defensin expression peaked around 18°C.
  • Immune responses exhibited complex interactions with temperature, time, and immune challenge, not simple temperature scaling.

Conclusions:

  • Environmental temperature has significant quantitative and qualitative effects on Anopheles stephensi immune responses.
  • Observed immune patterns under one condition poorly predict responses under different conditions.
  • Temperature-dependent immunity has major implications for vector control and resistance mechanism extrapolation.