29 Works

Data from: Biotic interactions in species distribution models enhance model performance and shed light on natural history of rare birds: a case study using the Straight-billed Reedhaunter (Limnoctites rectirostris)

Facundo X. Palacio & Juan M. Girini
Species distribution models (SDMs) have become a workhorse to explain, understand and predict distributions of birds. However, SDMs at broad scales are typically built using climatic variables, while ignoring the effects of biotic interactions. Although its role still remains controversial, the inclusion of biotic interactions into SDMs could confirm and/or provide new ecological insights of poorly known species. We modeled the distribution of the rare South American straight-billed reedhaunter (Limnoctites rectirostris, Furnariidae), a specialist of...

Data from: Increasing the fish diversity of the Triassic faunas of Gondwana: a new redfieldiiform (Actinopterygii) from the Middle Triassic of Argentina and its palaeobiogeographical implications

Soledad Gouiric-Cavalli, Ana María Zavattieri, Pedro Raúl Gutierrez, Bárbara Cariglino & Lucía Balarino
A new actinopterygian, Calaichthys tehul gen. et sp. nov. is described on the basis of a few, well-preserved specimens from the Anisian Cerro de Las Cabras Formation, Cuyo Basin in Mendoza Province. The new genus shows a combination of primitive characters (e.g. deep posterior region of the maxilla contacting the preopercle, a suspensorium backwardly oriented) and more advanced characters (e.g. distally segmented fin rays, hemiheterocercal caudal fin) and is thus considered to be a ‘subholostean’...

Data from: Paleobiology of the basal hydrochoerine Cardiomys Ameghino, 1885 (Rodentia, Caviomorpha, late Miocene, South America) as inferred from its postcranial anatomy

Adriana M. Candela, Nahuel A. Muñoz & César M. García-Esponda
Extinct Hydrochoerinae traditionally included within “Cardiomyinae” (Cavioidea, Caviidae) are caviomorph rodents well-represented in the late Miocene-late Pliocene of Argentina, but their paleobiology has been investigated little. The postcranium of these rodents is poorly-known and has not been considered in morpho-functional or systematic studies. Here, we provide the first description of the postcranium of the basal hydrochoerine Cardiomys Ameghino, 1885, based on a well preserved specimen from the late Miocene of Central Argentina, and evaluate its...

Data from: Selection on fruit traits is mediated by the interplay between frugivorous birds, fruit flies, parasitoid wasps, and seed-dispersing ants

Facundo Palacio, Adam Siepielski, Mariela Lacoretz & Mariano Ordano
Every organism on Earth must cope with a multitude of species interactions both directly and indirectly throughout its life cycle. However, how selection from multiple species occupying different trophic levels affects diffuse mutualisms has received little attention. As a result, how a given species amalgamates the combined effects of selection from multiple mutualists and antagonists to enhance its own fitness remains little understood. We investigated how multispecies interactions (frugivorous birds, ants, fruit flies, and parasitoid...

Elasmosaurid phylogeny and paleobiogeography, with a reappraisal of Aphrosaurus furlongi from the Maastrichtian of the Moreno Formation

Marcelo Reguero
Supplemental material for : O’Gorman, J. P. 2019. Elasmosaurid phylogeny and paleobiogeography, with a reappraisal of Aphrosaurus furlongi from the Maastrichtian of the Moreno Formation. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2019.1692025. Supp Mat 1.pdf (scoring modifications and new characters) Supp Mat 2.nex (data set)

Data from: Postcranial anatomy of the extinct terrestrial sloth Simomylodon uccasamamensis (Xenarthra: Mylodontidae) from the Pliocene of the Bolivian Altiplano and its evolutionary implications

Alberto Boscaini, Néstor Toledo, Bernardino Mamani Quispe, Rubén Andrade Flores, Marcos Fernández-Monescillo, Laurent Marivaux, Pierre-Olivier Antoine, Philippe Münch, Timothy Gaudin & François Pujos
Extinct terrestrial sloths are common elements of the late Cenozoic South American fossil record. Among them, Mylodontinae species were particularly abundant in the Americas throughout the Pleistocene epoch, and their anatomy is relatively well known. In contrast, less information is available from the Neogene record and particularly from localities at low latitudes, with an additional and considerable bias in favor of craniodental rather than postcranial remains. In this contribution, we provide comparative descriptions of several...

Data from: A new Pliosaurus species (Sauropterygia, Plesiosauria) from the Upper Jurassic of Patagonia: new insights on the Tithonian morphological disparity of mandibular symphyseal morphology

Jose P. O'Gorman, Zulma Gasparini & Luis A. Spalletti
Abstract.—Most species of the genus Pliosaurus come from the Northern Hemisphere, however a growing number of new specimens are now available from the Southern Hemisphere. Here a new species of Pliosaurus is described, the second for the genus from the Southern Hemisphere, collected from the upper Tithonian (Jurassic) levels of the Vaca Muerta Formation, Neuquén Province. Pliosaurus almanzai n. sp. is characterized by two autapomophies: angular participating in the mandibular symphysis and occipital condyle without...

Data from: Early evolutionary differentiation of morphological variation in the mandible of South American caviomorph rodents (Rodentia, Caviomorpha)

Alicia Álvarez, Sergio I Perez & Diego H Verzi
Caviomorphs are a clade of South American rodents recorded at least since the early Oligocene (>31.5 Ma) that exhibit ample eco-morphological variation. It has been proposed that phylogenetic structure is more important than ecological factors for understanding mandibular shape variation in this clade. This was interpreted as a result of the long-standing evolutionary history of caviomorphs and the early divergence of major lineages. In this work we test this hypothesis through analysis of morphological variation...

Data from: Unravelling the distinctive craniomandibular morphology of the Plio‐Pleistocene Eumysops in the evolutionary setting of South American octodontoid rodents (Hystricomorpha)

A. Itatí Olivares, Alicia Álvarez, Diego H. Verzi, S. Ivan Perez & Nahuel A. De Santi
Abstract: Echimyidae is a species-rich clade of Neotropical rodents, which diversified in association with forested biomes. A few lineages were adapted to open environments from southern South America since the late Miocene. Eumysops is one of these southern echimyids, and its peculiar craniomandibular morphology has been assumed to be a result of adaptation to open environments. We performed a geometric morphometric analysis of craniomandibular shape variation in order to explore if Eumysops is, as suspected,...

Female-driven intersexual coevolution in beetle genitalia

Bruno Genevcius, Joanna Baker, Filipe Bianchi & Adriana Marvaldi
Genital coevolution is a pervasive phenomenon as changes in one sex tend to impose fitness consequences on the other generating sexual conflict. Sexual conflict is often thought to cause stronger selection on males due to the Darwin-Bateman’s anisogamy paradigm. However, recent studies have demonstrated that female genitalia may be equally elaborated and perform diverse extra-copulatory functions. These characteristics suggest that female genitals can also be primary targets of selection, especially where natural selection acts on...

Data from: A quantitative method for inferring locomotory shifts in amniotes during ontogeny, its application to dinosaurs, and its bearing on the evolution of posture

Kimberley E. J. Chapelle, Roger B. J. Benson, Josef Stiegler, Alejandro Otero, Qi Zhao & Jonah N. Choiniere
Evolutionary transitions between quadrupedal and bipedal postures are pivotal to the diversification of amniotes on land, including in our own lineage (Hominini). Heterochrony is suggested as a macroevolutionary mechanism for postural transitions, but understanding postural evolution in deep time is hindered by a lack of methods for inferring posture in extinct species. Dinosaurs are an excellent natural laboratory for understanding postural transitions, because their lineage contains at least four instances of quadrupedality evolving from bipedality,...

Data from: Cascading effects of a disease outbreak in a remote protected area

Julia Monk, Justine Smith, Emiliano Donadio, Paula Perrig, Ramiro Crego, Martin Fileni, Owen Bidder, Sergio Lambertucci, Jonathan Pauli, Oswald Schmitz & Arthur Middleton
Disease outbreaks induced by humans increasingly threaten wildlife communities worldwide. Like predators, pathogens can be key top-down forces in ecosystems, initiating trophic cascades that may alter food webs. An outbreak of mange in a remote Andean protected area caused a dramatic population decline in a mammalian herbivore (the vicuña), creating conditions to test the cascading effects of disease on the ecological community. By comparing a suite of ecological measurements to pre-disease baseline records, we demonstrate...

Data from: Ecological and phylogenetic dimensions of the cranial shape diversification in South American caviomorph rodents (Rodentia: Hystricomorpha)

Alicia Álvarez, S. Ivan Perez & Diego H. Verzi
Caviomorph rodents represent an excellent model to explore morphological diversification on a macroevolutionary scale, as they are ecologically and morphologically diverse. We analysed cranial shape variation using geometric morphometrics and phylogenetic comparative methods. Most variation involved the shape of the rostrum, basicranium, and cranial vault, and clearly matched the phylogenetic structure. At the same time, a strong allometric pattern was associated with the length of the rostrum and cranial vault, size of the auditory bulla,...

Data from: Phylogenomic data yield new and robust insights into the phylogeny and evolution of weevils

Seunggwan Shin, Dave J. Clarke, Alan R. Lemmon, Emily Moriarty Lemmon, Alexander L. Aitken, Stephanie Haddad, Brian D. Farrell, Adriana E. Marvaldi, Rolf G. Oberprieler & Duane D. McKenna
The phylogeny and evolution of weevils (the beetle superfamily Curculionoidea) has been extensively studied, but many relationships, especially in the large family Curculionidae (true weevils; > 50000 species), remain uncertain. We used phylogenomic methods to obtain DNA sequences from 522 protein coding genes for representatives of all families of weevils and all subfamilies of Curculionidae. Most of our phylogenomic results had strong statistical support, and the inferred relationships were generally congruent with those reported in...

Data from: Phylogenetic studies in Smallanthus (Millerieae, Asteraceae): a contribution from morphology

Maira Soledad Vitali & Jessica Noelia Viera Barreto
We present a cladistic analysis of all the species of Smallanthus. Six taxa within Rumfordia, Ichthyothere, Acanthospermum and Tridax served as outgroups. We evaluated the monophyly and the relationships between the species of Smallanthus through a maximum parsimony study based on morphological data. The matrix included 31 qualitative characters from floral and vegetative parts of the specimens. We also explored the phylogenetic significance of treating quantitative characters as continuous. Only one most parsimonious tree was...

Data from: Signatures of divergence, invasiveness and terrestralization revealed by four apple snail genomes

Jin Sun, Huawei Mu, Jack C. H. Ip, Runsheng Li, Ting Xu, Alice Accorsi, Alejandro Sánchez Alvarado, Eric Ross, Yi Lan, Yanan Sun, Alfredo Castro-Vazquez, Israel A. Vega, Horacio Heras, Santiago Ituarte, Bert Van Bocxlaer, Kenneth A. Hayes, Robert H. Cowie, Zhongying Zhao, Yu Zhang, Pei-Yuan Qian & Jian-Wen Qiu
The family Ampullariidae includes both aquatic and amphibious apple snails. They are an emerging model for evolutionary studies due to the high diversity, ancient history and wide geographical distribution. Insight into drivers of ampullariid evolution is hampered, however, by the lack of genomic resources. Here we report the genomes of four ampullariids spanning the Old World (Lanistes nyassanus) and New World (Pomacea canaliculata, Pomacea maculata and Marisa cornuarietis) clades. The ampullariid genomes have conserved ancient...

Data from: Evolutionary pattern of Metacaremys gen. nov. (Rodentia, Octodontidae) and its biochronological implications for the late Miocene–early Pliocene of southern South America

Pedro Piñero, Diego H. Verzi, A. Itatí Olivares, Claudia I. Montalvo, Rodrigo L. Tomassini & Ariel Fernández Villoldo
Octodontoidea rodents (Hystricognathi) are particularly useful for analysing evolution of diversity and derived biochronological patterns. Despite its significance, our knowledge of the systematics of octodontoids from the late Miocene–early Pliocene, a key time interval in the evolution of this group in South America, is still partial. Here, we analyse the taxonomic status and diversity of the late Miocene octodontoid Cercomys primitiva and related samples, a taxon known hitherto only by the holotype specimen. New findings...

Data from: Morphological disparity in the evolution of the ophthalmosaurid forefin: new clues from the Upper Jurassic of Argentina

Lisandro Campos, Marta Fernández, Yanina Herrera & Alberto Garrido
Jurassic and Cretaceous marine deposits worldwide depict ophthalmosaurid ichthyosaurs as major components of marine tetrapod communities for almost 76 million years. One of the major features characterising this clade is the complexity and diversity of their stylopodium-zeugopodium morphology. Late Jurassic deposits of the Vaca Muerta Formation in northwest Patagonia (Argentina) have yielded the richest Tithonian ophthalmosaurid records from Gondwana. Here, we present a new ophthalmosaurid from this lithostratigraphic unit, Sumapalla argentina gen. et sp. nov.,...

Geometric morphometrics of endophytic oviposition traces of Odonata (Eocene, Argentina)

Eugenia Romero-Lebrón, Raquel M. Gleiser & Julián F. Petrulevicius
The insertion of the Odonata ovipositor in the plant tissue generates a scar that surrounds the eggs (trace). In insects, individual egg traces are known to vary in size, but their variation in individual shape is mostly unknown. Twenty four specimens were obtained from the Laguna del Hunco (Lower Eocene, Chubut) and Río Pichileufú (Middle Eocene, Río Negro), Argentina, which had 1346 oviposition traces (MEF Collection). For the first time, a study of the shape...

Data from: The costs of ignoring species detectability on functional diversity estimation

Facundo Palacio, René Maragliano & Diego Montalti
Functional diversity (FD) approaches have been increasingly used to understand ecosystem functioning in bird communities. These typically rely on the assumption that species are perfectly detected in the field, despite the fact that imperfect detection represents a ubiquitous source of bias in biodiversity studies. This may be notably important in FD studies, because detection may depend on the functional traits used to compute FD metrics. However, little effort has been devoted to account for imperfect...

Data from: AmpuBase: a transcriptome database for eight species of apple snails (Gastropoda: Ampullariidae)

Jack C. H. Ip, Huawei Mu, Qian Chen, Jin Sun, Santiago Ituarte, Horacio Heras, Bert Van Bocxlaer, Monthon Ganmanee, Xin Huang & Jian-Wen Qiu
Background: Gastropoda, with approximately 80,000 living species, is the largest class of Mollusca. Among gastropods, apple snails (family Ampullariidae) have members that are widely distributed in tropical and subtropical freshwater ecosystems and are ecologically and economically important. They exhibit various morphological and physiological adaptations to their respective habitats, which make them ideal candidates for studying adaptation, population divergence, speciation, and larger-scale patterns of diversity, including biogeography of native and invasive populations. The limited availability of...

Data from: Patterns of cranial shape diversification during the phylogenetic branching process of New World monkeys (Primates: Platyrrhini)

Sergio I Perez, Júlia Klaczko, Guido Rocatti & Sergio F Dos Reis
One of the central topics in evolutionary biology is understanding the processes responsible for phenotypic diversification related to ecological factors. New World monkeys are an excellent reference system to investigate processes of diversification at macroevolutionary scales. Here, we investigate the cranial shape diversification related to body size and ecology during the phylogenetic branching process of platyrrhines. To investigate this diversification, we used geometric morphometric techniques, a molecular phylogenetic tree, ecological data and phylogenetic comparative methods....

Data from: Diversity, phylogeny and biogeography of the South American ‘cardiomyine’ rodents (Hystricognathi, Cavioidea) with a description of two new species

María E. Pérez, Cecilia M. Deschamps & María G. Vucetich
‘Cardiomyine’ rodents are extinct large terrestrial Caviidae closely related to capybaras, that inhabited large parts of South America during the middle Miocene and Pliocene. They are mostly preserved as isolated teeth, but also as skull and jaw fragments. Here we revise the taxonomy of this group and describe two new species, each pertaining to one of the two main late Miocene groups, represented by the genera Caviodon and Cardiomys. This suggests that the diversity of...

Data from: Island- and lake-like parallel adaptive radiations replicated in rivers

Edward D. Burress, Lubomír Piálek, Jorge R. Casciotta, Adriana Almirón, Milton Tan, Jonathan W. Armbruster & Oldřich Říčan
Parallel adaptive radiations have arisen following the colonization of islands by lizards and lakes by fishes. In these classic examples, adaptive radiation is a response to the ecological opportunities afforded by the colonization of novel ecosystems and similar adaptive landscapes that favor the evolution of similar suites of ecomorphs despite independent evolutionary histories. Here, we demonstrate that parallel adaptive radiations of cichlid fishes arose in South American rivers. Speciation-assembled assemblages of pike cichlids (Crenicichla) have...

Data from: Palaeoproteomics resolves sloth phylogeny

Samantha Presslee, Graham J. Slater, Francois Pujos, Analia M. Forasiepi, Roman Fischer, Kelly Molloy, Meaghan Mackie, Jesper V. Olsen, Alejandro Kramarz, Matias Taglioretti, Fernando Scaglia, Maximiliano Lezcano, José Luis Lanata, John Southon, Robert Feranec, Jonathan Bloch, Adam Hajduk, Fabiana M. Martin, Rodolfo Salas Gismondi, Marcelo Reguero, Christian De Muizon, Alex Greenwood, Brian T. Chait, Kirsty Penkman, Matthew Collins … & Ross D. E. MacPhee
The living tree sloths Choloepus and Bradypus are the only remaining members of Folivora, a major xenarthran radiation that occupied a wide range of habitats in many parts of the western hemisphere during the Cenozoic, including both continents and the West Indies. Ancient DNA evidence has played only a minor role in folivoran systematics, as most sloths lived in places not conducive to genomic preservation. Here we utilize collagen sequence information, both separately and in...

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