The Great American Biotic Interchange

Cione, Alberto Luis; Gasparini, Germán Mariano; Soibelzon, Esteban; Soibelzon, Leopoldo Héctor; Tonni, Eduardo Pedro

doi:10.1007/978-94-017-9792-4

Cited by 138 publications

(149 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These plants would indicate bushy savannas with a dry season and a temperature of over 10 C in the cold season. The Chapadmalalan fauna is very diverse, indicating disparate environments; e.g., the presence of argyrolagid marsupials and abundance of fossorial rodents, interpreted as indicators of arid and semi-arid conditions, as well as certain didelphid marsupials related to conditions similar to the current ones, but rainier and with the presence of gallery forests or forest patches (Cione et al 2015).…”

Section: Discussionmentioning

confidence: 99%

The forelimb of †Cyonasua sp. (Procyonidae, Carnivora): ecomorphological interpretation in the context of carnivorans

Tarquini

Toledo

Morgan

et al. 2015

Earth and Environmental Science Transactions of the Royal Socie

View full text Add to dashboard Cite

The procyonid †Cyonasua is endemic to South America and recorded from the Late Miocene to the Early Pleistocene. This paper studies the forelimb of †Cyonasua sp. (late Pliocene of Miramar, Argentina), using an ecomorphological approach to infer morphological adaptations linked to substrate preference and locomotory mode, as well as to grasping and digging ability. Twenty linear measurements of forelimb and pectoral girdle were taken from †Cyonasua sp. and a sample of 87 specimens of extant carnivoran families (Procyonidae, Mustelidae, Ursidae, Viverridae, Canidae and Felidae). Raw values were transformed to minimise the effect of size. Morphological variation was explored by principal component analysis (PCA); substrate preference and locomotory mode were further analysed by multivariate analysis of variance (MAV) and discriminant analysis (DA); grasping and digging ability were analysed by DA. In the PCA morphospace, †Cyonasua sp. occupied a unique position, close to extant procyonids. DA classified it as non-specialised digger with poor grasping ability. The results lead to the interpretation of †Cyonasua sp. as having a moderately stabilised elbow joint with poor pronation-supination, although some climbing skills cannot be ruled out. Thus, †Cyonasua sp. could have had generalised habits, in agreement with reconstructed palaeoenvironmental conditions.

show abstract

Section: Discussionmentioning

confidence: 99%

The forelimb of †Cyonasua sp. (Procyonidae, Carnivora): ecomorphological interpretation in the context of carnivorans

Tarquini

Toledo

Morgan

et al. 2015

Earth and Environmental Science Transactions of the Royal Socie

View full text Add to dashboard Cite

show abstract

“…The studied microvertebrates include mammal and reptile specimens. According to the biostratigraphic scheme proposed by Cione and Tonni (2005) and Cione et al (2015) for the late Cenozoic of the Pampean Region, the presence of Lagostomus maximus assigns the early Holocene-sixteenth century age to the assemblage.…”

Section: Geographic and Stratigraphic Settingmentioning

confidence: 99%

“…The vertebrate fauna from the late Cenozoic of the Pampean Region, central Argentina, is one of the richest and most diverse of South America (Cione and Tonni 2005;Cione et al 2015). Particularly, microvertebrates are a major component of many assemblages.…”

Section: Introductionmentioning

confidence: 99%

Microvertebrates preserved in mammal burrows from the Holocene of the Argentine Pampas: a taphonomic and paleoecological approach

et al. 2016

Self Cite

View full text Add to dashboard Cite

“…The Great American Biotic Interchange (hereafter GABI) is the asymmetric swapping of terrestrial biotas between North and South America (Webb 1978, Simpson 1980, Stehli & Webb 1985, Carrillo et al 2015Cione et al 2015). GABI was consolidated by the closure of the Panamanian land bridge, which facilitated the flux of organisms otherwise restricted to their original landmasses (Webb 1978, Simpson 1980, Marshall 1985, O'Dea 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

The Great American Biotic Interchange

Cited by 138 publications

References 0 publications

The forelimb of †Cyonasua sp. (Procyonidae, Carnivora): ecomorphological interpretation in the context of carnivorans

The forelimb of †Cyonasua sp. (Procyonidae, Carnivora): ecomorphological interpretation in the context of carnivorans

Microvertebrates preserved in mammal burrows from the Holocene of the Argentine Pampas: a taphonomic and paleoecological approach

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

Contact Info

Product

Resources

About