Molecular and morphologic data reveal multiple species in<i>Peromyscus pectoralis</i>

Bradley, Robert D.; Schmidly, David; Amman, Brian R.; Platt, Roy N.; Neumann, Kathy M.; Huynh, Howard M.; Muñiz-Martínez, Raúl; López‐González, Celia; Ordóñez‐Garza, Nicté

doi:10.1093/jmammal/gyv049

Cited by 11 publications

(4 citation statements)

References 26 publications

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“…Based on the logic presented in Bradley and Baker (2001), our results revealed that GG3 (furvus from the type locality Xalapa, Veracruz and its surroundings) and GG2 (angustirostris from Hidalgo, Puebla and locations further NW in Veracruz) would appear to be subspecies. The genetic distances between GG2 and GG3 are similar to that reported by Bradley et al (2015) for two subspecies (ranging from 1.77 % in P. p. laceianus to 2.21 % in P. p. pectoralis). Similarly, Lorenzo et al (2016) use a K2P genetic distance of 2.08-3.65% to define two subspe-cies of P. zarhynchus in Chiapas (P. z. zarhynchus and P. z. cristobalensis).…”

Section: Discussionsupporting

confidence: 84%

Rejection of the monotypic status of Peromyscus furvus (Rodentia: Cricetidae), with consequences for its species group

Cruz-Gómez

Campillo

Ávila-Valle

et al. 2021

Therya

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Previous studies using Cytochrome-b or ND3-ND4 mitochondrial gene have yielded intriguing evidence about the phylogenetic relationships among populations of Peromyscus furvus; however, those studies each based on phylogenies for a single type of genes, yielded conflicting topologies. In addition, analyses with traditional morphometrics have revealed differences in skull size among certain populations of the species. Therefore, in order to reassess the systematic and taxonomic status of P. furvus, we incorporated a suite of genetic and morphometric characters and employed cladistic analyses. Herein, we present results mostly derived from our genetic analyses (results from the phylogenetic examination of skull size and shape will appear later). Phylogenetic analyses were conducted using four mitochondrial genes (Cytb and ND3-ND4L-ND4) with the respective data analyzed separately or combined, followed by an analysis with genetic and morphometric data (size and shape characters). Most phylogenetic constructions were made with parsimonious methods, but probabilistic methods also were used in the analyses with the genes separated by type. Similar topologies were recovered from all analyses of the Cytb gene and from all parsimony analyses of the NADH genes; however, conflicting topologies were obtained with the probabilistic methods for the NADH genes. Additionally, to better understand the genetic variation in each type of gene, analyses for genetic divergence were conducted within and among genetic groups and haplotype networks were constructed. All the topologies obtained using genetic data questioned the monotypic status of P. furvus, as two additional clades were identified that seemingly correspond to unrecognized entities. The first of these, P. latirostris, occurs in the northern region and could be considered as either a species or subspecies. An unknown Peromyscus species nova that occurs to the south is considered as a valid species. Further, P. furvus s. s. becomes a polytypic species by recognizing at least two subspecies (P. f. angustirostris and P. f. furvus). Phylogenetic analyses also rejected membership of P. melanocarpus and P. ochraventer within the furvus species group. Instead, P. melanocarpus showed a greater affinity to P. mexicanus totontepecus, whereas, P. ochraventer either joined to the clade containing P. melanocarpus and P. m. tototepecus or to Megadontomys cryophilus in a sister clade. Finally, Osgoodomys banderanus (subgenus Haplomylomys) always remained basally positioned and segregated from all members of the subgenus Peromyscus.

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Section: Discussionsupporting

confidence: 84%

Rejection of the monotypic status of Peromyscus furvus (Rodentia: Cricetidae), with consequences for its species group

Cruz-Gómez

Campillo

Ávila-Valle

et al. 2021

Therya

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“…With the utilization of molecular data and the expansion of species concepts, the content of the genus Peromyscus has been expanded from 53 species recognized by Carleton (1989) and Musser and Carleton (1993), to 56 species recognized by Musser and Carleton (2005), to 66 species recognized by Pardiñas et al (2017) and to 78 species currently recognized in the Mammal Diversity Database (Mammal Diversity Database 2020). Over 20 new species of Peromyscus have been recognized just in the past 10 years (Ávila-Valle et al 2012;Bradley et al 2014Bradley et al , 2015Bradley et al , 2019Pérez-Consuegra and Vazquez-Domínguez 2015;Greenbaum et al 2019;Lorenzo et al 2016;Álvarez-Castañeda et al 2019;López-González et al 2019;Léon-Tapia et al 2020).…”

Section: Discussionmentioning

confidence: 99%

A re-examination of the molecular systematics and phylogeography of taxa of the Peromyscus aztecus species group, with comments on the distribution of P. winkelmanni

Kilpatrick

Pradhan

Norris

2021

Therya

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The objectives of this study are to examine the available molecular data from the mitochondrial cytochrome-b gene (Cytb) and a concatenated dataset with this gene and two nuclear introns (Adh-1-I2 and Fgb-I7) to reexamine the systematic and phylogeographic conclusions reached by Sullivan et al. (1997) concerning the Peromyscus aztecus species group. The divergence of samples of P. aztecus oaxacensis across the Isthmus of Tehuantepec are further examined and taxonomic revisions are suggested. In addition, this study reviews the sources of data that lead to the conclusion that P. winkelmanni occurred in the Sierra Madre del Sur in Guerrero including a morphometric examination of a reported voucher. Bayesian and maximum likelihood analyses were conducted on a dataset of 31 Cytb sequences of all taxa in the P. aztecus group except for P. a. cordillerae and a concatenated dataset including five individuals of this group. Representative taxa of the P. boylii, P. mexicanus, and P. truei groups were included in both analyses. Body and cranial measurements of the voucher of the P. winkelmanni from Guerrero from which a Cytb sequence is reported to have been obtained was compared with measurements from specimens taken from the vicinity of Dos Aguas, Michoacán, including the type locality. We identified seven instances involving problematic identifications in GenBank. Once these issues were addressed, well-supported monophyletic sister clades of the P. aztecus and P. boylii species groups were recovered from phylogenetic analyses of Cytb sequences (Fig 1). Phylogenetic analyses of the Cytb and the concatenated datasets recover similar topologies that support the relationships of taxa of the aztecus group proposed by an earlier molecular study. Populations of P. a. oaxacensis southeast of the Isthmus of Tehuantepec represent a distinct species. Measurements of the voucher from Guerrero identified as the source of a P. winkelmanni Cytb sequence are smaller than P. winkelmanni for several characters. The divergent populations of P. a. oaxacensis from southeast of the Isthmus of Tehuantepec are recognized as two subspecies of P. cordillerae, P. c. cordillerae and P. c. hondurensis, whereas those northwest of the Isthmus are retained as P. a. oaxacensis. The lack of genetic divergence observed between P. a. evides and P. a. oaxacensis questions whether these two taxa should continue to be recognized as separate subspecies. Northern and southern populations of P. spicilegus demonstrate moderate divergence and additional examination of morphological and molecular differentiation within this taxon is warranted. The distribution of P. winkelmanni should be restricted to the vicinity of Dos Aguas, Michoacán, due to the lack of a voucher specimen that would confirm its reported occurrence in Guerrero.

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“…We only included records for which at least one museum voucher existed, even though the museum number may or may not have been provided in the publication. Data were included only from species descriptions or recent taxonomic revisions (e.g., Bradley et al 2014, 2015; Mathis et al 2013b, b; Mathis et al 2014). Third, data from a catch-and-release project conducted by the first author in the SMO between 2021 and 2022.…”

Section: Methodsmentioning

confidence: 99%

An ecoregionalization of the Sierra Madre Occidental, México, based on non-volant, small mammal distributions

2023

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The Sierra Madre Occidental (SMO) is the largest mountain range in Mexico, spanning nearly 1,400 km from northwest to southeast. It is a region of high ecological complexity, yet, few attempts at ecoregionalization are available. Using Maxent and five high-resolution (30 m) physiographic layers, we generated niche models for 33 species of small, non-flying mammals. We generated a proposal of regions based on the proportion of overlap of all possible pairs of species niches (ordinated using PCoA) and environmental data. We compared the resulting ecoregionalization with the most detailed regionalizations of the SMO available, based on floristic, vegetational, and bird distribution data. PCoA revealed two major axes of variation related to elevation and humidity, and therefore to vegetational composition. Our regionalization is consistent with previous regionalizations in recognizing a tropical and a xerophilous region, but not a transitional Madrean Tropical. We identified the highlands as a north-south continuum, and a transitional region was identified between the xerophilous and highland areas. Differences in ecoregional patterns in taxa as different as mammals and plants, are evidence that the SMO's complexity goes beyond the more traditional Nearctic-Neotropical subdivision.

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Molecular and morphologic data reveal multiple species inPeromyscus pectoralis

Cited by 11 publications

References 26 publications

Rejection of the monotypic status of Peromyscus furvus (Rodentia: Cricetidae), with consequences for its species group

Rejection of the monotypic status of Peromyscus furvus (Rodentia: Cricetidae), with consequences for its species group

A re-examination of the molecular systematics and phylogeography of taxa of the Peromyscus aztecus species group, with comments on the distribution of P. winkelmanni

An ecoregionalization of the Sierra Madre Occidental, México, based on non-volant, small mammal distributions

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