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Automated measurement of upper thermal limits in small aquatic animals.


ABSTRACT: We present a method for automating the measurement of upper thermal limits in small aquatic organisms. Upper thermal limits are frequently defined by the cessation of movement at high temperature, with measurement being performed by manual observation. Consequently, estimates of upper thermal limits may be subject to error and bias, both within and among observers. Our method utilises video-based tracking software to record the movement of individuals when exposed to high, lethal temperatures. We develop an algorithm in the R computing language that can objectively identify the loss of locomotory function from tracking data. Using independent experimental data, we validate our approach by demonstrating the expected response in upper thermal limits to acclimation temperature.

SUBMITTER: Burton T 

PROVIDER: S-EPMC6140313 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Automated measurement of upper thermal limits in small aquatic animals.

Burton Tim T   Zeis Bettina B   Einum Sigurd S  

The Journal of experimental biology 20180913 Pt 17


We present a method for automating the measurement of upper thermal limits in small aquatic organisms. Upper thermal limits are frequently defined by the cessation of movement at high temperature, with measurement being performed by manual observation. Consequently, estimates of upper thermal limits may be subject to error and bias, both within and among observers. Our method utilises video-based tracking software to record the movement of individuals when exposed to high, lethal temperatures. W  ...[more]

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