Research Article |
Corresponding author: Fernando Heberson Menezes ( fernandoheberson@gmail.com ) Corresponding author: Itayguara Ribeiro da Costa ( itayguara@gmail.com ) Academic editor: Raquel López-Antoñanzas
© 2023 Fernando Heberson Menezes, Thiago Borges Fernandes Semedo, Juliane Saldanha, Guilherme Siniciato Terra Garbino, Hugo Fernandes-Ferreira, Pedro Cordeiro-Estrela, Itayguara Ribeiro da Costa.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Menezes FH, Semedo TBF, Saldanha J, Garbino GST, Fernandes-Ferreira H, Cordeiro-Estrela P, da Costa IR (2023) Phylogenetic relationships, distribution, and conservation of Roosmalens’ dwarf porcupine, Coendou roosmalenorum Voss & da Silva, 2001 (Rodentia, Erethizontidae). ZooKeys 1179: 139-155. https://doi.org/10.3897/zookeys.1179.108766
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The New World porcupines of the genus Coendou comprise 16 species of arboreal nocturnal rodents. Some of these species are poorly known and have not been included in phylogenetic analyses. Based on recently collected specimens with associated tissue from the Brazilian Amazonia, we investigate the distribution and phylogenetic relationships of Roosmalens’ dwarf porcupine, Coendou roosmalenorum, using an integrative approach using mitochondrial gene sequences and morphological data from new specimens and localities. Our results recovered C. roosmalenorum in the subgenus Caaporamys. However, analyses of our molecular and combined datasets produced different topologies. The new record shows the presence of C. roosmalenorum 480 km to the southeast of the Rio Madeira and 95 km away from Rio Juruena in Mato Grosso state, indicating a wider distribution in southern Amazonia than suspected. All known records of C. roosmalenorum are in the Madeira biogeographical province, to which it might be endemic.
Amazonia, Brazil, cytochrome b, Madeira Province, Neotropical porcupines
New World porcupines of the genus Coendou Lácepède, 1799 are arboreal, herbivorous, nocturnal rodents of the family Erethizontidae which occur in tropical and subtropical regions of the Americas (
Since the early 1990s, studies have clarified the taxonomic status and phylogenetic relationships among species of Coendou (
Most current knowledge about species of Coendou is restricted to taxa that occur close to urban centers (see
Coendou roosmalenorum is one of the least known New World species of porcupine. It was originally thought to occur only in the Brazilian Amazon from both banks of the Madeira River, and only anecdotal information is available on its natural history (
The examined specimens are deposited in two collections (abbreviations in parentheses):
Coleção de Mamíferos da Universidade Federal de Mato Grosso (
The nomenclature of the soft hairs and quills of the porcupines used here follows
Genomic DNA of
To investigate the phylogenetic position of Coendou roosmalenorum, we analyzed a molecular dataset and a dataset that combined molecular sequences with morphological character data.
Only cyt b sequences were available for our molecular analysis; these and our new sequence of C. roosmalenorum augmented the molecular dataset previously published by
An ML consensus tree was inferred using the IQ-TREE (
Our combined dataset included the same cyt b sequences described above and the morphological character matrix of
Genetic distances were calculated for the cyt b dataset in MEGA 11 (
To provide an updated map of the geographic distribution of C. roosmalenorum, we used published records of museum specimens (
List of the known localities of the Brazilian endemic Coendou roosmalenorum. Numbers in the “Locality” column refer to the map (Fig.
Locality | GPS coordinates | Reference | |
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1 | Serra do Expedito, Aripuanã, Mato Grosso | 10°40'S, 59°30'W | This study |
2 | Samuel Hydroelectric Dam, Rio Jamari, Rondônia | 8°45'S, 63°27'W | This study |
3 | BR 364, 49 km E from Porto Velho, Rondônia* | 8°45'S, 63°30'W |
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4 | Novo Jerusalém on Lago Matupirizinho, Amazonas | 5°33'S, 61°07'W |
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5 | Santa Maria on Lago Matupiri, Amazonas | 5°33'S, 61°15'W |
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We calculated the Extent of Occurrence (EOO), which is the area contained within the smallest continuous boundary that can be drawn to encompass all known, inferred, or projected points of the current presence of a taxon (
The specimens we examined all have the diagnostic characters of Coendou roosmalenorum (Fig.
Quills and bristle-quills of select Brazilian porcupine species (Coendou spp.) a Amazonian C. longicaudatus, long tricolored quill b C. baturitensis, long tricolored quill c C. bicolor, long bicolored quill d C. nycthemera, long quills with different distal band colors e C. melanurus, tricolored guard hair and bicolored quill f C. roosmalenorum, tricolored bristle-quill and bicolored quill g C. ichillus, tricolored bristle-quill and bicolored quill. Adapted from
Our MP analysis of the combined (molecular + morphological) dataset resulted in the following indices: tree length = 1206 steps, consistency index (CI) = 0.4934, homoplasy index (HI) = 0.5066, CI excluding uninformative characters = 0.4337, HI excluding uninformative characters = 0.5663, retention index (RI) = 0.8231, rescaled consistency index (RC) = 0.4061, f value = 53305, f-ratio = 0.3722.
Both datasets recovered C. roosmalenorum in the subgenus Caaporamys, as expected based on morphological traits. However, the molecular dataset (ML and BI1) and combined dataset (MP and BI2) had two distinct topologies (Fig.
Average pairwise K2P sequence distances (scaled as percentages) at the cyt b locus among species of subgenus Caaporamys.
C. ichillus | C. melanurus | C. roosmalenorum | |
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C. melanurus | 8.2% | ||
C. roosmalenorum | 5.3% | 7.8% | |
C. vestitus | 5.7% | 8.4% | 5.1% |
Phylogenetic hypotheses of Coendou focused on the species of subgenus Caaporamys based on two distinct datasets. Left: combined morphological and cyt b datasets, the values above the branches represent the posterior probabilities of IB2 and values below represent the bootstrap supports of MP. Right: cyt b; values above the branches represent the posterior probabilities of IB1, and values below represent the bootstrap proportions of ML. Branches of subgenera other than Caaporamys are collapsed.
Our MP analysis of the combined data revealed a single morphological apomorphy in C. roosmalenorum, which is a weakly developed lambdoidal ridge (Char25:1, CI 0.4, Table
List of morphological apomorphies of Caaporamys species obtained in maximum parsimony of combined data.
Subgenus Caaporamys | Character | Steps | CI | State change | Description |
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C. ichillus | Char1 | 1 | 0.250 | 1 → 0 | Fur not covering quills on the dorsal crest |
Char2 | 1 | 0.500 | 1 → 0 | Absence of dorsal fur | |
Char11 | 1 | 0.500 | 2 → 0 | B3 of bristle-quills is whitish | |
Char21 | 1 | 0.400 | 0 → 1 | Medial masseter scar oval and wide | |
Char24 | 1 | 0.667 | 0 → 1 | Temporal crests drawing in dorsal view V-shaped | |
Char26 | 1 | 0.333 | 0 → 1 | Palatal keel conspicuous | |
Char31 | 1 | 0.200 | 1 → 0 | Dorsal roof of the external auditory meatus not keeled | |
Char33 | 1 | 0.500 | 1 → 0 | Orbitotemporal fossa shallow | |
C. melanurus | Char12 | 1 | 0.429 | 0 → 1 | B2 about the same length of B1 |
Char13 | 1 | 0.500 | 2 → 1 | B3 about the same length of B2 | |
C. vestitus | (No morphological apomorphies) | ||||
C. roosmalenorum | Char25 | 1 | 0.400 | 0 → 1 | Lambdoidal ridge weakly developed |
All the known records of C. roosmalenorum are from the Madeira Province of Amazonia (Fig.
Distribution of Caaporamys roosmalenorum in Brazilian Amazonia. Data for the numbered localities are provided in Table
The molecular and combined datasets recovered Coendou roosmalenorum as a member of the subgenus Caaporamys, as expected from its morphological characters. This species has the diagnostic morphological traits of the subgenus, such as the presence of bristle-quills in the dorsal pelage, soft ventral pelage, and unicolored caudal bristles on the tail (
However, the two datasets analyzed in this report suggest different topologies, with C. roosmalenorum placed either as the sister species of C. melanurus or C. vestitus. These differing results may be due to the unavailability of morphological data for Caaporamys species. The available morphological dataset for phylogenetic analyses lacks cranial characters for C. melanurus and includes only molecular characters for C. vestitus. In this way, the very homoplasic characters as colors and length of the quills bands appear to have a major contribution to the combined data in the absence of cranial characters.
The color and length of quill bands of Neotropical porcupines have a high level of homoplasy (Table
Previously, the distribution of C. roosmalenorum was associated with the Rio Madeira, as the species was known from only two localities along that river or its tributary, Rio Jamari (
All the known records of C. roosmalenorum are in the Madeira Province sensu
Distribution patterns suggest that Coendou species can occur in sympatry with other porcupine subgenera and are only allopatric with species of the same subgenus. Coendou roosmalenorum occurs in sympatry with C. longicaudatus Daudin, 1802, the largest porcupine species of the subgenus Coendou, and it is allopatric with other Caaporamys species. Coendou ichillus Voss & da Silva 2001 is the Caaporamys species that occurs closest to C. roosmalenorum, with records north of the Solimões and Amazonas rivers (
Coendou roosmalenorum is classified as Data Deficient by the IUCN (
Therefore, it is necessary to investigate population size and decline to determine the conservation status of C. roosmalenorum more accurately following IUCN criteria. In addition to standard ecological approaches focused on erethizontids, such as visual census, telemetry, and arboreal camera traps (e.g.,
We thank Thabata Cavalcante for the geospatial analyses, and we are grateful to Robert S. Voss for his suggestions and contributions that helped improve the quality of our manuscript. We are also grateful to Rogério Rossi, the curator of
The authors have declared that no competing interests exist.
No ethical statement was reported.
FHM was supported by a scholarship provided by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). GSTG received support from the Latin American Fellowship Committee of the American Society of Mammalogists. TBFS is supported by a fellowship from the Portuguese Foundation for Science and Technology (FCT), under scholarship number 202210212BD. HF-F is supported by the Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico (Funcap). This study is co-funded by the project NORTE-01-0246-FEDER-000063, supported by Norte Portugal Regional Operational Programme (NORTE2020), under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF).
Conceptualization: TBFS, FHM, PCE, IRC, HFF. Formal analysis: TBFS, FHM, GSTG. Funding acquisition: TBFS. Investigation: FHM, GSTG, TBFS, HFF. Methodology: TBFS, JS, FHM, GSTG, HFF. Software: FHM. Supervision: PCE, IRC. Validation: GSTG. Writing - original draft: HFF, TBFS, JS, IRC, PCE, FHM, GSTG.
Fernando Heberson Menezes https://orcid.org/0000-0003-4169-0215
Thiago Borges Fernandes Semedo https://orcid.org/0000-0003-4379-5993
Juliane Saldanha https://orcid.org/0000-0003-3983-7169
Guilherme Siniciato Terra Garbino https://orcid.org/0000-0003-1701-5930
Hugo Fernandes-Ferreira https://orcid.org/0000-0001-9064-3736
Pedro Cordeiro-Estrela https://orcid.org/0000-0003-3383-571X
Itayguara Ribeiro da Costa https://orcid.org/0000-0003-0135-6706
All of the data that support the findings of this study are available in the main text or Supplementary Information.
Dataset 1
Data type: nex
Explanation note: Nexus file of aligned cytochrome b sequences of Erethizontid used for ML and IB1.
Dataset 2
Data type: nex
Explanation note: Nexus file of aligned cytochrome b and morphological data of Erethizontid used for MP.
Dataset 3
Data type: nex
Explanation note: Nexus file of aligned cytochrome b and morphological data of Erethizontid used for IB2.
Erethizontid cytochrome b sequences utilized in phylogenetic analyses
Data type: docx