Validation of collar-mounted inertial sensors for quantifying locomotion in sifakas (Propithecus coquereli)


SOCIETY FOR INTEGRATIVE AND COMPARATIVE BIOLOGY
2021 VIRTUAL ANNUAL MEETING (VAM)
January 3 – Febuary 28, 2021

Meeting Abstract


P41-10  Sat Jan 2  Validation of collar-mounted inertial sensors for quantifying locomotion in sifakas (Propithecus coquereli) Heslep, NR*; Murphy, AA; O’Hanlon, CP; Wunderlich, RE; James Madison University, Harrisonburg VA; James Madison University, Harrisonburg VA; James Madison University, Harrisonburg VA; James Madison University, Harrisonburg VA heslepnr@dukes.jmu.edu

The use of inertial sensors for quantification of animal behavior and energetics has become commonplace in numerous species. Nevertheless, studies quantifying dynamic body acceleration or locomotor behaviors using inertial sensors in primates are still limited, and little attention has been given to methodological concerns such as sensor placement. Device location may influence the calculation of dynamic body accelerations or the classification of behaviors for use in machine learning algorithms for the quantification of positional behavior, particularly in primates who navigate 3-dimensionally-complex environments. Previous studies of primates have typically used back-mounted devices for the quantification of specific locomotor behaviors and collar-behavior. In this study, we compared overall and vector dynamic body acceleration (ODBA and VeDBA), leap counts, and body surface temperature from back-mounted (near center of mass) and collar-mounted inertial sensors (Mbientlab, San Francisco) on Propithecus coquereli at the Duke Lemur Center (3.73 hours) and ODBA/VeDBA in a lab simulation. No significant differences in ODBA, VeDBA or leap counts were found between collar and back-mounted devices in the simulation or animal studies (p>0.05). Collar-mounted devices exhibited consistently higher temperatures and additional movement signatures related to grooming and communicative displays involving the head. This study demonstrates that collar-mounted devices, which afford greater measurement flexibility (minimal risk of detaching, no interference with infant carrying, longer term placement), are valid and feasible for quantification of dynamic body acceleration and locomotion in primates.

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