In the Wake of Invasion: Tracing the Historical Biogeography of the South American Cricetid Radiation (Rodentia, Sigmodontinae)

Leite, Rafael N.; Kolokotronis, Sergios‐Orestis; Almeida, Francisca Cunha; Werneck, Fernanda P.; Rogers, Donald E.; Weksler, Marcelo

doi:10.1371/journal.pone.0100687

Cited by 83 publications

(111 citation statements)

References 109 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For rodents, we also used a Cyt b matrix containing previously published sequences (Table S3) and followed a published phylogeny (56) to set monophyletic constraints. We used six calibration points that represent multiple shallow (e.g., genera) and deep (e.g., tribes) calibrations of sigmodontines (56,57) (Table S4). These calibration points were set as lognormal prior distributions, where fossil ages were set as offsets, and mean and SD were set as 1 (57).…”

Section: Methodsmentioning

confidence: 99%

Neotropical forest expansion during the last glacial period challenges refuge hypothesis

Leite

Costa

Loss

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

192

153

View full text Add to dashboard Cite

The forest refuge hypothesis (FRH) has long been a paradigm for explaining the extreme biological diversity of tropical forests. According to this hypothesis, forest retraction and fragmentation during glacial periods would have promoted reproductive isolation and consequently speciation in forest patches (ecological refuges) surrounded by open habitats. The recent use of paleoclimatic models of species and habitat distributions revitalized the FRH, not by considering refuges as the main drivers of allopatric speciation, but instead by suggesting that high contemporary diversity is associated with historically stable forest areas. However, the role of the emerged continental shelf on the Atlantic Forest biodiversity hotspot of eastern South America during glacial periods has been ignored in the literature. Here, we combined results of species distribution models with coalescent simulations based on DNA sequences to explore the congruence between scenarios of forest dynamics through time and the genetic structure of mammal species cooccurring in the central region of the Atlantic Forest. Contrary to the FRH predictions, we found more fragmentation of suitable habitats during the last interglacial (LIG) and the present than in the last glacial maximum (LGM), probably due to topography. We also detected expansion of suitable climatic conditions onto the emerged continental shelf during the LGM, which would have allowed forests and forest-adapted species to expand. The interplay of sea level and land distribution must have been crucial in the biogeographic history of the Atlantic Forest, and forest refuges played only a minor role, if any, in this biodiversity hotspot during glacial periods.T he extreme biological diversity of tropical forests has inspired and puzzled naturalists and scientists for centuries, and the forest refuge hypothesis (FRH) has long been one of the major paradigms to explain it. According to the FRH, forest retraction and fragmentation during glacial periods would have promoted isolation and consequently allopatric speciation in forest patches, or ecological refuges, surrounded by open habitats in the Amazon (1). Although originally based on climate fluctuations in the Pleistocene, the FRH was subsequently invoked for climate changes irrespective of the time period (2). The FRH was also applied to South America's Atlantic Forest (3), one of the topfive biodiversity hotspots on Earth (4). The FRH gained broad acceptance during the 1980s when empirical paleoecological data from neotropical rainforests were still lacking. Nevertheless, heavy criticism came upon the FRH because some paleobotanical data showed that forests had persisted throughout glacial cycles (5). As paleoclimatic models of species and habitats became widely used, recent studies revitalized the FRH, not by considering refuges as the main drivers of allopatric speciation, but instead by suggesting that high contemporary diversity and endemism are associated with historically stable Atlantic Forest areas (6).This hypothesis is ba...

show abstract

Section: Methodsmentioning

confidence: 99%

Neotropical forest expansion during the last glacial period challenges refuge hypothesis

Leite

Costa

Loss

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

192

153

View full text Add to dashboard Cite

show abstract

“…The importance of examining other recent widespread radiations (e.g. the Sigmodontinae of South America [58,59]) is therefore evident and will inform our general understanding on the process of continental diversification. As such, the study of recent radiations can provide a window into the origin of biodiversity and how microevolutionary processes ultimately induce macroevolutionary change at a continental scale.…”

Section: (C) Continental Radiationmentioning

confidence: 99%

Convergence across a continent: adaptive diversification in a recent radiation of Australian lizards

Blom

Horner²,

Moritz

2016

Proc. R. Soc. B.

View full text Add to dashboard Cite

Recent radiations are important to evolutionary biologists, because they provide an opportunity to study the mechanisms that link micro-and macroevolution. The role of ecological speciation during adaptive radiation has been intensively studied, but radiations can arise from a diversity of evolutionary processes; in particular, on large continental landmasses where allopatric speciation might frequently precede ecological differentiation. It is therefore important to establish a phylogenetic and ecological framework for recent continental-scale radiations that are species-rich and ecologically diverse. Here, we use a genomic (approx. 1 200 loci, exon capture) approach to fit branch lengths on a summary-coalescent species tree and generate a time-calibrated phylogeny for a recent and ecologically diverse radiation of Australian scincid lizards; the genus Cryptoblepharus. We then combine the phylogeny with a comprehensive phenotypic dataset for over 800 individuals across the 26 species, and use comparative methods to test whether habitat specialization can explain current patterns of phenotypic variation in ecologically relevant traits. We find significant differences in morphology between species that occur in distinct environments and convergence in ecomorphology with repeated habitat shifts across the continent. These results suggest that isolated analogous habitats have provided parallel ecological opportunity and have repeatedly promoted adaptive diversification. By contrast, speciation processes within the same habitat have resulted in distinct lineages with relatively limited morphological variation. Overall, our study illustrates how alternative diversification processes might have jointly stimulated species proliferation across the continent and generated a remarkably diverse group of Australian lizards.

show abstract

“…The study of extant mammal diversity and distribution, in combination with the study of the rich fossil record throughout North and South America, has enabled biologists to document the net effects of GABI on mammalian dispersion, diversification and extinction (Webb 1978, Simpson 1980, Borrero 2008. In particular, scientists have estimated dates of the impressive adaptive diversification of South American Cricetidae (Parada et al 2013, Leite et al 2014; identified signals of mass extinction in Didelphiomorpha in the Miocene (Jansa et al 2014); studied the Holocene expansion of South American species into North America (Arteaga et al 2012, Feng et al 2016…”

Section: Introductionmentioning

confidence: 99%

Nematodes Associated With Mammals in the Great American Biotic Interchange (Gabi)

Jiménez¹,

Notarnicola²,

Gardner³

2017

Oecol. Austr.

View full text Add to dashboard Cite

The Great American Biotic Interchange (GABI) is a large-scale zoogeographic event that illustrates the exchange and diversification of mammals between North and South America. This phenomenon was accelerated by the connection of both landmasses during the Pliocene. Support for this phenomenon includes the extant distribution of xenarthrans, didelphiomorph marsupials, hystricognath and cricetine rodents, sciurids and carnivores, as well as the distribution of fossils in the stratigraphic record and the coalescence of genotypes. Contrasting with the relatively well-documented role and history of mammals in GABI, the role of their parasites has been largely neglected. As a consequence, the reconstructions of the causes of diversification, extinction and dispersion of groups of mammals during the Pliocene (and Miocene) invoke changes in climate patterns and the role of competitors or predators, yet in most cases the lines of evidence are not direct. We posit that infections with parasites offer a direct form of evidence of the role of interactions among species, by considering that the successful establishment of species of parasites in new groups of vertebrates will result in a net effect on their adaptive immune system. Thus, the current distribution of nematode parasites of the families Aspidoderidae, Nippostrongylidae, Onchocercidae, Oxyuridae, Rictaluriidae and Viannaidae offers evidence that the historical associations of these nematodes and their hosts diverge from the expected cospeciation and codivergence. Thus, clades of parasites infect disparate clades of mammals and, by deviating from the expected cospeciation, represent a paradox. This paradox deters investigators from studying historical associations among symbionts, since researchers lose the compelling simplicity of testing coevolutionary associations through the congruence of their resulting phylogenies. However, the reconstruction of historical associations must acknowledge the differential survival of parasites in novel hosts. This consideration is part of the Stockholm Paradigm, which includes the hypotheses known as Ecological Fitting, Oscillations, Taxon Pulses and Mosaics of Geographic Coevolution. We introduce nine host-parasite systems that provide insights on the role of parasites in GABI. We posit that the conservatism of parasite resource use, heritability of the adaptive immune system, and the genetic structure of parasites make it possible to elucidate the role of these parasites in GABI.

show abstract

In the Wake of Invasion: Tracing the Historical Biogeography of the South American Cricetid Radiation (Rodentia, Sigmodontinae)

Cited by 83 publications

References 109 publications

Neotropical forest expansion during the last glacial period challenges refuge hypothesis

Neotropical forest expansion during the last glacial period challenges refuge hypothesis

Convergence across a continent: adaptive diversification in a recent radiation of Australian lizards

Nematodes Associated With Mammals in the Great American Biotic Interchange (Gabi)

Contact Info

Product

Resources

About