Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Testing a Claim about Mean: Unknown Population SD

Testing a Claim about Mean: Unknown Population SD

A complete procedure of testing a hypothesis about a population mean when the population standard deviation is unknown is explained here.
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used; instead...

Life Histories

Life Histories

Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is represented by two primary reproductive strategies; K-strategists produce few offspring but provide substantial parental support, whereas r-strategists produce much progeny that receives little care. These strategies are related to an organism’s survival likelihood across its lifespan, which is represented by a survivorship curve. Three general types of...

Derivatives: Problem Solving

Derivatives: Problem Solving

Temperature-Dependent Growth of Brook TroutThe growth of brook trout is closely influenced by water temperature. Experimental data demonstrate how trout weight changes over a 24-day period in response to varying water temperatures. At lower temperatures, such as 15.5 degrees Celsius, brook trout show significant weight gain. However, as the temperature increases, the amount of weight gained steadily decreases. At the highest temperature measured, 24.4 degrees Celsius, trout experience a net...

Requirements for Human Life

Requirements for Human Life

The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...

Background and Environment Affect Phenotype

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...

Diversity of Archaea IV

Diversity of Archaea IV

Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist thermal...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Energyscapes and prey fields shape a North Atlantic seabird wintering hotspot under climate change.

Royal Society open science·2018

Same author

Behavioral implications of mechanistic ecology : Thermal and behavioral modeling of desert ectotherms and their microenvironment.

Oecologia·2017

Same author

Effect of temperature on leg kinematics in sprinting tarantulas (Aphonopelma hentzi): high speed may limit hydraulic joint actuation.

The Journal of experimental biology·2015

Same author

Breath carbon stable isotope ratios identify changes in energy balance and substrate utilization in humans.

International journal of obesity (2005)·2014

Same author

Outbreak of pathogenic Escherichia coli in an outdoor-housed non-human primate colony.

Journal of medical primatology·2014

Same author

NMR-based metabolomics and breath studies show lipid and protein catabolism during low dose chronic T(1)AM treatment.

Obesity (Silver Spring, Md.)·2013

Search research articles

Related Experiment Video

Updated: Jun 23, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

Temperature, activity, and lizard life histories.

S C Adolph, W P Porter

The American Naturalist

|May 12, 2009

Summary

This summary is machine-generated.

Lizard life histories show phenotypic plasticity, meaning they change with environmental factors like temperature. This study reveals temperature

More Related Videos

Thermal Limits Determination for Zooplankton Using a Heat Block

Thermal Limits Determination for Zooplankton Using a Heat Block

Published on: November 18, 2022

Testing Visual Sensitivity to the Speed and Direction of Motion in Lizards

Testing Visual Sensitivity to the Speed and Direction of Motion in Lizards

Published on: December 14, 2006

Related Experiment Videos

Last Updated: Jun 23, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

Thermal Limits Determination for Zooplankton Using a Heat Block

Thermal Limits Determination for Zooplankton Using a Heat Block

Published on: November 18, 2022

Testing Visual Sensitivity to the Speed and Direction of Motion in Lizards

Testing Visual Sensitivity to the Speed and Direction of Motion in Lizards

Published on: December 14, 2006

Area of Science:

Ecology
Evolutionary Biology
Herpetology

Background:

Lizard life-history traits exhibit significant variation across species and populations.
Traditionally, adaptive or phylogenetic explanations, assuming genetic underpinnings, are favored for these patterns.
Phenotypic plasticity, where life histories respond to environmental factors like temperature, is often overlooked.

Purpose of the Study:

To develop a theoretical model predicting the impact of the thermal environment on lizard life histories.
To investigate the proximate effects of temperature on lizard survival and fecundity.
To assess whether environmental temperature influences life-history trade-offs.

Main Methods:

A theoretical model was developed to link thermal environment to life-history variation.
Published life-history data for the lizard Sceloporus undulatus were analyzed.
Climate and geographical data were used to estimate annual activity periods for different populations.

Main Results:

The model predicted that temperature-influenced activity times affect survival and fecundity.
A negative correlation was observed between annual activity time and survival rate across populations.
A positive correlation was found between annual activity time and fecundity across populations.

Conclusions:

The proximate effects of environmental temperature significantly influence lizard life-history traits.
Temperature-driven phenotypic plasticity can create trade-offs between survival and fecundity.
Future evolutionary models of lizard life histories must incorporate the proximate impacts of temperature.