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Identification of mammals based on hair microstructure: Methodological adaptations and new morphological patterns

Srbek Araujo, Ana Carolina et al · Sociedade Brasileira de Mastozoologia · 2024

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The characterization of patterns of hair microstructure is an important instrument for studying the diet and ecology of mammals, representing an accessible method for identifying predators and their prey. The present study aimed to: (1) describe methodological adaptations developed to optimize traditional guard hair analysis protocols; (2) propose adjustments in the classification of morphological patterns of medulla and cuticle; and (3) establish the microstructural pattern of Brazilian mammals’ hair to assist in the identification of prey and predators in studies based on fecal samples. Hairs from 53 mammal species, including small (n = 16), medium (n = 28) and large size (n = 9), distributed in 24 families and nine orders were analyzed. The orders with the most species analyzed were Carnivora (n = 14), Rodentia (n = 13) and Didelphimorphia (n = 8), while the most representative families were Didelphidae (n = 8), Cricetidae (n = 7) and Felidae (n = 6). Among the species, 13 (24.5% of the total) did not have the microstructural patterns described in studies developed previously in Brazilian territory: Alouatta guariba, Blarinomys breviceps, Bradypus torquatus, Callicebus personatus, Callithrix geoffroyi, Dasyprocta leporina, Hylaeamys seuanezi, Potos flavus, Priodontes maximus, Rhipidomys mastacalis, Sapajus robustus, Sylvilagus minensis and Tayassu pecari. More descriptive nomenclatures were proposed regarding the observed patterns and new patterns were described for species evaluated in previous studies. Our results contribute to the diagnosis of species to be more accurate, contributing to the development of future studies. A caracterização dos padrões microestruturais de pelos é um importante instrumento para estudo da dieta e da ecologia de mamíferos, representando um método acessível para identificação de predadores e suas presas. O presente estudo teve como objetivos: (1) descrever adaptações metodológicas desenvolvidas para otimizar protocolos tradicionais de análise de pelos-guarda; (2) propor ajustes na classificação dos padrões morfológicos de medula e cutícula; e (3) estabelecer o padrão microestrutural de pelos de mamíferos brasileiros para auxiliar na identificação de presas e predadores em estudos baseados em amostras fecais. Foram analisados pelos de 53 espécies de mamíferos, incluindo espécies de pequeno (n = 16), médio (n = 28) e grande porte (n = 9), distribuídos em 24 famílias e nove ordens. As ordens com mais espécies analisadas foram Carnivora (n = 14), Rodentia (n = 13) e Didelphimorphia (n = 8), enquanto as famílias mais representativas foram Didelphidae (n = 8), Cricetidae (n = 7) e Felidae (n = 6). Dentre as espécies analisadas, 13 (24,5% do total) não tinham padrões microestruturais descritos em estudos desenvolvidos anteriormente em território brasileiro: Alouatta guariba, Blarinomys breviceps, Bradypus torquatus, Callicebus personatus, Callithrix geoffroyi, Dasyprocta leporina, Hylaeamys seuanezi, Potos flavus, Priodontes maximus, Rhipidomys mastacalis, Sapajus robustus, Sylvilagus minensis and Tayassu pecari. Nomenclaturas mais descritivas foram propostas em relação aos padrões observados e novos padrões foram descritos para as espécies avaliadas em estudos anteriores. Os resultados obtidos contribuem para que o diagnóstico das espécies seja mais preciso, contribuindo para o desenvolvimento de estudos futuros. Fil: Srbek Araujo, Ana Carolina. Universidade Vile Velha; Brasil

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APA 7

Srbek Araujo, A. C. E. A. (2024). Identification of mammals based on hair microstructure: Methodological adaptations and new morphological patterns. http://hdl.handle.net/11336/259447

MLA

Srbek Araujo, Ana Carolina et al. "Identification of mammals based on hair microstructure: Methodological adaptations and new morphological patterns." 2024. http://hdl.handle.net/11336/259447.

Chicago

Srbek Araujo, Ana Carolina et al. 2024. "Identification of mammals based on hair microstructure: Methodological adaptations and new morphological patterns.". http://hdl.handle.net/11336/259447.

Harvard

Srbek Araujo, A. C. E. A. 2024, Identification of mammals based on hair microstructure: Methodological adaptations and new morphological patterns, Sociedade Brasileira de Mastozoologia, available at: http://hdl.handle.net/11336/259447 [Accessed 9 Aug. 2026].

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Title
Identification of mammals based on hair microstructure: Methodological adaptations and new morphological patterns
Author / contributors
Srbek Araujo, Ana Carolina et al
Publisher
Sociedade Brasileira de Mastozoologia
Publication year
2024
ISSN
2764-6394
ISSN
2764-6394
Language
English

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