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

Osmoregulation in Insects

Osmoregulation in Insects

Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.

You might also read

Related Articles

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

Sort by

Same author

Whole-body glucose uptake in crayfish (Procambarus clarkii): A study of sexual dimorphism via [<sup>18</sup>F]FDG MicroPET imaging.

Environmental toxicology and pharmacology·2025

Same author

Memory recognition elicits autonomic-like responses in crayfish.

The Journal of experimental biology·2025

Same author

Sleep Phases in Crayfish: Relationship Between Brain Electrical Activity and Autonomic Variables.

Frontiers in neuroscience·2021

Same author

Who is the boss? Individual recognition memory and social hierarchy formation in crayfish.

Neurobiology of learning and memory·2017

Same author

Disruption of behavior and brain metabolism in artificially reared rats.

Developmental neurobiology·2017

Same author

Early social isolation provokes electrophysiological and structural changes in cutaneous sensory nerves of adult male rats.

Developmental neurobiology·2014

Search research articles

Related Experiment Video

Updated: May 21, 2026

Physiological Experimentation with the Crayfish Hindgut: A Student Laboratory Exercise

Physiological Experimentation with the Crayfish Hindgut: A Student Laboratory Exercise

Published on: January 18, 2011

Sleep in invertebrates: crayfish.

Fidel Ramon¹, Karina Mendoza-Angeles, Jesus Hernandez-Falcon

¹Division de Investigacion, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, UNAM, Mexico, DF, Mexico. fidelrr@servidor.unam.mx

Frontiers in Bioscience (Scholar Edition)

|June 2, 2012

Summary

This summary is machine-generated.

Scientists are investigating animal sleep, including invertebrates like crayfish. Studies reveal surprising similarities between crustacean and mammalian sleep patterns, offering clues to sleep

More Related Videos

Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises

Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises

Published on: January 18, 2011

Continuous Noninvasive Measuring of Crayfish Cardiac and Behavioral Activities

Continuous Noninvasive Measuring of Crayfish Cardiac and Behavioral Activities

Published on: February 6, 2019

Related Experiment Videos

Last Updated: May 21, 2026

Physiological Experimentation with the Crayfish Hindgut: A Student Laboratory Exercise

Physiological Experimentation with the Crayfish Hindgut: A Student Laboratory Exercise

Published on: January 18, 2011

Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises

Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises

Published on: January 18, 2011

Continuous Noninvasive Measuring of Crayfish Cardiac and Behavioral Activities

Continuous Noninvasive Measuring of Crayfish Cardiac and Behavioral Activities

Published on: February 6, 2019

Area of Science:

Comparative physiology
Neuroscience
Invertebrate biology

Background:

Sleep is a universal behavior, yet its evolutionary origins and variations across species remain largely unexplored.
Scientific study of sleep has historically focused on a limited number of animals, hindering a comprehensive understanding of its biological necessity.

Purpose of the Study:

To investigate the presence and characteristics of sleep in invertebrates.
To explore the evolutionary origins of sleep by examining diverse animal groups.
To compare sleep patterns across different species, including mammals and invertebrates like crayfish.

Main Methods:

Review of existing behavioral studies on invertebrate sleep.
Analysis of electrophysiological data from invertebrate sleep research.
Comparative analysis of sleep characteristics in crayfish and mammals.

Main Results:

Behavioral and electrophysiological studies in crayfish demonstrate sleep patterns with striking resemblances to mammalian sleep.
Invertebrates, including crustaceans, exhibit sleep-like states, challenging previous assumptions about sleep's restricted occurrence.
Research suggests sleep may have originated in invertebrates, providing insights into its fundamental biological functions.

Conclusions:

Sleep is not exclusive to vertebrates; it is present in invertebrates like crayfish.
Crayfish exhibit complex sleep behaviors and physiological markers similar to mammals.
Studying invertebrate sleep, particularly in crustaceans, is crucial for understanding the evolution and fundamental purpose of sleep across the animal kingdom.