The biogeography of Dromiciops in southern South America: Middle Miocene transgressions, speciation and associations with Nothofagus

Saenz‐Agudelo, Pablo; Celis‐Diez, Juan L.; Amico, Guillermo C.; Vázquez, M. Soledad; Shafer, Aaron B. A.; Nespolo, Roberto F.

doi:10.1016/j.ympev.2021.107234

Cited by 23 publications

(12 citation statements)

References 68 publications

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“…This would explain the similarities between insular and continental populations and between Argentinean and Chilean populations. The time‐calibrated phylogenetic reconstruction of these clades provided recently by Quintero‐Galvis et al ( 2021 ) confirmed the paleontological dating of Goin and Abello ( 2013 ) and the Miocene origin of the genus.…”

Section: Updated Phylogeographic Affinities Within Dromiciopssupporting

confidence: 66%

“…Still, these studies covered a small percentage of this species geographic range (~1200 km). The most complete geographic sampling of Dromiciops populations to date was provided by Quintero‐Galvis et al ( 2021 ), who resolved genetic distances for 31 localities covering the whole geographic range for the genus (Figure 4 ). Using two mtDNA and four nuclear genes, these authors proposed four clades, being the northernmost clade different enough from the other three to be considered as a different species ( Dromiciops bozinovici ).…”

Section: Updated Phylogeographic Affinities Within Dromiciopsmentioning

confidence: 99%

“…Illustrations of both Dromiciops species are shown. This figure was adapted from Quintero‐Galvis et al ( 2021 )…”

Section: Updated Phylogeographic Affinities Within Dromiciopsmentioning

confidence: 99%

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The ecology and evolution of the monito del monte, a relict species from the southern South America temperate forests

Fontúrbel

Pérez

Bozinovic

et al. 2022

Ecology and Evolution

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The arboreal marsupial monito del monte (genus Dromiciops , with two recognized species) is a paradigmatic mammal. It is the sole living representative of the order Microbiotheria, the ancestor lineage of Australian marsupials. Also, this marsupial is the unique frugivorous mammal in the temperate rainforest, being the main seed disperser of several endemic plants of this ecosystem, thus acting as keystone species. Dromiciops is also one of the few hibernating mammals in South America, spending half of the year in a physiological dormancy where metabolism is reduced to 10% of normal levels. This capacity to reduce energy expenditure in winter contrasts with the enormous energy turnover rate they experience in spring and summer. The unique life history strategies of this living Microbiotheria, characterized by an alternation of life in the slow and fast lanes, putatively represent ancestral traits that permitted these cold‐adapted mammals to survive in this environment. Here, we describe the ecological role of this emblematic marsupial, summarizing the ecophysiology of hibernation and sociality, updated phylogeographic relationships, reproductive cycle, trophic relationships, mutualisms, conservation, and threats. This marsupial shows high densities, despite presenting slow reproductive rates, a paradox explained by the unique characteristics of its three‐dimensional habitat. We finally suggest immediate actions to protect these species that may be threatened in the near future due to habitat destruction and climate change.

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Section: Updated Phylogeographic Affinities Within Dromiciopssupporting

confidence: 66%

Section: Updated Phylogeographic Affinities Within Dromiciopsmentioning

confidence: 99%

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The ecology and evolution of the monito del monte, a relict species from the southern South America temperate forests

Fontúrbel

Pérez

Bozinovic

et al. 2022

Ecology and Evolution

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“…This would explain the similarities between insular and continental populations and between Argentinean and Chilean populations. The time-calibrated phylogenetic reconstruction of these clades provided recently by Quintero-Galvis et al (2021) confirmed the paleontological dating of Goin and Abello (2013) and the Miocene origin of the genus.…”

Section: Updated Phylogeographic Affinities Within Dromiciopssupporting

confidence: 60%

“…Still, these studies covered a small percentage of this species large (˜1200 km) geographic range. The most complete geographic sampling of Dromiciopspopulations to date was provided by Quintero-Galvis et al (2021), who resolved genetic distances for 31 localities covering the whole geographic range for the genus. Using two mtDNA and four nuclear genes, these authors proposed four clades, being the northernmost clade different enough from the other three to be considered as a different species (Dromiciops bozinovici ).…”

Section: Updated Phylogeographic Affinities Within Dromiciopsmentioning

confidence: 99%

The ecology and evolution of the Monito del monte, a relict species from the southern South America temperate forests

Fontúrbel

Franco

Bozinovic

et al. 2021

Preprint

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The arboreal marsupial Monito del Monte (genus Dromiciops, with two recognized species) is a paradigmatic mammal. It is the sole living representative of the order Microbiotheria, the ancestor lineage of Australian marsupials. Also, this marsupial is the unique frugivorous mammal in the temperate rainforest, being the main seed disperser of several endemic plants of this ecosystem, thus acting as keystone species. Dromiciops is also one of the few hibernating mammals in South America, spending half of the year in a physiological dormancy where metabolism is reduced to 10% of normal levels. This capacity to reduce energy expenditure in winter contrasts with the enormous energy turnover rate they experience in spring and summer. The unique life-history strategies of this living Microbiotheria, characterized by an alternation of life in the slow and fast lanes, putatively represent ancestral traits that permitted these cold-adapted mammals to survive in this environment. Here we describe the ecological role of this emblematic marsupial, summarizing the ecophysiology of hibernation and sociality, actualized phylogeographic relationships, reproductive cycle, trophic relationships, mutualisms, conservation and threats. This marsupial shows high densities, despite presenting slow reproductive rates, a paradox that is explained by the unique characteristics of its three-dimensional habitat. We finally suggest immediate actions to protect these locally abundant but globally threatened species.

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Local adaptation of Dromiciops marsupials (Microbiotheriidae) from southern South America: Implications for species management facing climate change

Quintero‐Galvis,

Saenz‐Agudelo,

D'Elía

et al. 2024

Ecology and Evolution

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The two species of the microbiotheriid marsupial genus Dromiciops (Dromiciops bozinovici: “Panchos's monito del monte” and Dromiciops gliroides: “monito del monte”) exhibit a marked latitudinal genetic differentiation. Nevertheless, it is unclear whether this differentiation results from neutral processes or can be explained, to some extent, by local adaptation to different environmental conditions. Here, we used an SNP panel gathered by Rad‐seq and searched for footprints of local adaptation (putative loci under selection) by exploring genetic associations with environmental variables in the two species of Dromiciops in Chilean and Argentinean populations. We applied three methods for detecting outlier SNPs and two genotype–environment associations approaches to quantify associations between allelic frequencies and environmental variables. Both species display strong genetic structure. D. bozinovici exhibited three distinct genetic groups, marking the first report of such structuring in this species using SNPs. In contrast, D. gliroides displayed four genetic clusters, consistent with previous studies. Both species exhibited an association of their genetic structure with environmental variables. D. bozinovici exhibited significant associations of allelic frequencies with elevation, precipitation during the warmest periods, and seasonality in the thermal regime. For D. gliroides, genetic variation appeared to be associated with more variables than D. bozinovici, including precipitation and temperature‐related variables, isothermality, and elevation. All the outlier SNPs were mapped to the D. gliroides reference genome to explore if they fell within functionally known genes. These results represent a necessary first step toward identifying the genome regions that harbor genes associated with climate adaptations in Dromiciops. Notably, we identified genes involved in various functions, including carbohydrate synthesis (ALG8), muscle and neuronal regulation (MEF2D), and stress responses (PTGES3). Ultimately, this study contributes valuable insights that can inform targeted conservation strategies aimed at preserving the genetic diversity of Dromiciops in the face of environmental challenges.

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The biogeography of Dromiciops in southern South America: Middle Miocene transgressions, speciation and associations with Nothofagus

Cited by 23 publications

References 68 publications

The ecology and evolution of the monito del monte, a relict species from the southern South America temperate forests

The ecology and evolution of the monito del monte, a relict species from the southern South America temperate forests

The ecology and evolution of the Monito del monte, a relict species from the southern South America temperate forests

Local adaptation of Dromiciops marsupials (Microbiotheriidae) from southern South America: Implications for species management facing climate change

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