Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/58063
Title: Taxonomic status of Tamarinus imperator subgrisescens (Lonnberg, 1940) (Cebidae, Callitrichinae)
Keywords: Emperor tamarin
Morphology
Cytochrome-b
Systematics
Species delimitation
Issue Date: 2023
Publisher: Museu de Zoologia da Universidade de São Paulo
Citation: GREGORIN. R. et al. Taxonomic status of Tamarinus imperator subgrisescens (Lonnberg, 1940) (Cebidae, Callitrichinae). Papeis Avulsos de Zoologia, [S.l.], v. 63, 2023.
Abstract: The emperor tamarin, Tamarinus imperator, is composed of two subspecies, the nominal type, T. i. imperator, distributed between the Acre and Purus Rivers, whose range is limited between the Brazilian state of Acre and Peru are unbounded, and T. i. subgrisescens, occurring in Peru, Bolivia, and Brazil, in the Brazilian states of Acre and Amazonas. Morphologically, both taxa are easily identifiable by the pelage pattern (chromogenetic fields), and even being easily distinguishable, both lineages are considered subspecies according to the criterion based on the Biological Concept of Species from the 1970s, even without presenting some necessary criteria, such as the intergradation zone. Here we analyzed pelage traits, cranial morphometry, Cytochrome-b divergence, and distributional pattern data applying the premises of integrative taxonomy to elucidate the taxonomic status of both lineages. We hypothesize that both lineages are considered full species through a series of criteria for species recognition, such as distinguishability, level of phenotypical divergences of several morphological complexes with congruence among them, and some genetic divergence. The hybridization is unknown and the low or the lack of sampling in target areas does not allow us to determine whether a hybridization or even contact zone between the two lineages exists indeed. All character sets analyzed were congruent with each other and reinforced the high level of divergences between the two subspecies including several pelage differences, morphometry (descriptive statistics, PCA, and MANOVA), and mitochondrial DNA Cytochrome-b divergence. Most of the distribution in both lineages are allopatric, and the levels of intra-lineage phenotypical variation are much lower than between the lineages.
URI: http://repositorio.ufla.br/jspui/handle/1/58063
Appears in Collections:DBI - Artigos publicados em periódicos



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