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Can crayfish take the heat? Procambarus clarkii show nociceptive behaviour to high temperature stimuli, but not low temperature or chemical stimuli.

Puri S, Faulkes Z - Biol Open (2015)

Bottom Line: Crayfish showed no difference in behavioural response to low temperature stimuli.Crayfish also showed no significant changes in behaviour when stimulated with capsaicin or isothiocyanate compared to controls, and neurons in the antenna did not change their firing rate following application of capsaicin or isothiocyanate.Noxious high temperatures appear to be a potentially ecologically relevant noxious stimulus for crayfish that can be detected by sensory neurons, which may be specialized nociceptors.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, The University of Texas-Pan American, Edinburg, TX 78539, USA.

No MeSH data available.


Related in: MedlinePlus

Extracellular recordings of neurons in antenna of crayfish in response to nocigenic chemical stimuli.(A,B) Capsaicin. (C,D) Isothiocyanate. Each row shows recordings from one individual. (1, left column) control with no chemicals showing spontaneous baseline activity; (2, center column) control with ethanol only; (3, right column): test with 10 mmol l−1 capsaicin (A,B) or 10 mmol l−1 isothiocyanate (C,D) in ethanol.
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f04: Extracellular recordings of neurons in antenna of crayfish in response to nocigenic chemical stimuli.(A,B) Capsaicin. (C,D) Isothiocyanate. Each row shows recordings from one individual. (1, left column) control with no chemicals showing spontaneous baseline activity; (2, center column) control with ethanol only; (3, right column): test with 10 mmol l−1 capsaicin (A,B) or 10 mmol l−1 isothiocyanate (C,D) in ethanol.

Mentions: There was no consistent change in antenna sensory neuron activity when the antennae were presented with either capsaicin (Fig. 3) or isothiocyanate (Fig. 4).


Can crayfish take the heat? Procambarus clarkii show nociceptive behaviour to high temperature stimuli, but not low temperature or chemical stimuli.

Puri S, Faulkes Z - Biol Open (2015)

Extracellular recordings of neurons in antenna of crayfish in response to nocigenic chemical stimuli.(A,B) Capsaicin. (C,D) Isothiocyanate. Each row shows recordings from one individual. (1, left column) control with no chemicals showing spontaneous baseline activity; (2, center column) control with ethanol only; (3, right column): test with 10 mmol l−1 capsaicin (A,B) or 10 mmol l−1 isothiocyanate (C,D) in ethanol.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4400587&req=5

f04: Extracellular recordings of neurons in antenna of crayfish in response to nocigenic chemical stimuli.(A,B) Capsaicin. (C,D) Isothiocyanate. Each row shows recordings from one individual. (1, left column) control with no chemicals showing spontaneous baseline activity; (2, center column) control with ethanol only; (3, right column): test with 10 mmol l−1 capsaicin (A,B) or 10 mmol l−1 isothiocyanate (C,D) in ethanol.
Mentions: There was no consistent change in antenna sensory neuron activity when the antennae were presented with either capsaicin (Fig. 3) or isothiocyanate (Fig. 4).

Bottom Line: Crayfish showed no difference in behavioural response to low temperature stimuli.Crayfish also showed no significant changes in behaviour when stimulated with capsaicin or isothiocyanate compared to controls, and neurons in the antenna did not change their firing rate following application of capsaicin or isothiocyanate.Noxious high temperatures appear to be a potentially ecologically relevant noxious stimulus for crayfish that can be detected by sensory neurons, which may be specialized nociceptors.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, The University of Texas-Pan American, Edinburg, TX 78539, USA.

No MeSH data available.


Related in: MedlinePlus