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Classification of sex-dependent specific behaviours by tri-axial acceleration in the tegu lizard Salvator merianae

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Autor(es):
Guadalupe-Silva, Ane ; Zena, Lucas A. ; Hervas, Livia Saccani ; Rios, Vitor Passos ; Gargaglioni, Luciane H. ; Buck, C. Loren ; Bicego, Kenia C.
Número total de Autores: 7
Tipo de documento: Artigo Científico
Fonte: COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY; v. 298, p. 10-pg., 2024-09-23.
Resumo

Validated patterns of behaviour detected by tri-axial acceleration in the laboratory can be used for remote measurements of free-living animals. The tegu lizard naturally occupies diverse biomes in South America and presents ecological threats in regions where it was artificially introduced. We aimed to validate the use of triaxial acceleration to distinguish among behaviours of male and female tegus in captivity by comparing observed behaviours to recorded acceleration data. Adult animals were externally fitted with an accelerometer fixed between their scapulae to quantify anteroposterior, lateral, and dorsoventral acceleration. Video recordings of cameras positioned on the walls of the animal-holding arena documented behaviours. Behaviour patterns, such as resting, walking, and eating, were identified for both sexes, and nest building in females and courtship and copulation in males. Random Forest algorithm was used to validate the behaviour patterns from accelerometry data based on two models, random split (70 % training-30 % validation; RS) and leave-one-out (divided by individual; LOO). Although LOO showed lower accuracies than RS for all the acceleration data, nest building in females and copulation in males had high accuracies in both models. In contrast, the lowest accuracies for walking and eating indicates they may involve more inconsistent movement patterns. Comparing the results from RS and LOO, female behaviours may be more identifiable in the field using triaxial accelerometry than males. The identification of behaviours by accelerometry, especially related to reproduction, without the necessity for direct observation of the tegus would be helpful for conservation purposes, for both natural and invasive populations. (AU)

Processo FAPESP: 21/10910-0 - Capacidades e tolerâncias fisiológicas frente a mudanças climáticas: explorando a dimensão funcional em vertebrados ectotérmicos
Beneficiário:Kênia Cardoso Bícego
Modalidade de apoio: Auxílio à Pesquisa - Temático
Processo FAPESP: 17/01652-2 - Fisiologia sazonal no lagarto teiú Salvator merianae: um modelo animal para avaliar funções fisiológicas em ambientes dinâmicos e em constante alteração
Beneficiário:Lucas Aparecido Zena
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 20/07520-3 - Identificação remota de comportamentos específicos por aceleração tridimensional em lagartos teiú S. merianae
Beneficiário:Ane Guadalupe Silva
Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 20/10961-1 - Efeito da estação reprodutiva sobre a respiração e o desacoplamento mitocondriais de lagartos teiú Salvator merianae
Beneficiário:Livia Saccani Hervas
Modalidade de apoio: Bolsas no Brasil - Iniciação Científica