17 Works

Genetic diversity and connectivity of southern right whales (Eubalaena australis) found in the Brazil and Chile–Peru wintering grounds and the South Georgia (Islas Georgias del Sur) feeding ground

Emma L Carroll, Paulo Ott, Louise McMillan, Bárbara Galletti Vernazzani, Petra Neveceralova, Els Vermeulen, Oscar Gaggiotti, Artur Andriolo, C. Scott Baker, Connor Bamford, Peter Best, Elsa Cabrera, Susannah Calderan, Andrea Chirife, Rachel M. Fewster, Paulo A. C. Flores, Timothy Frasier, Thales R. O. Freitas, Karina Groch, Pavel Hulva, Amy Kennedy, Russell Leaper, Mathew S. Leslie, Michael Moore, Larissa Oliviera … & Jennifer A Jackson
As species recover from exploitation, continued assessments of connectivity and population structure are warranted to provide information for conservation and management. This is particularly true in species with high dispersal capacity, such as migratory whales, where patterns of connectivity could change rapidly. Here we build on a previous long-term, large-scale collaboration on southern right whales (Eubalaena australis) to combine new (nnew) and published (npub) mitochondrial (mtDNA) and microsatellite genetic data from all major wintering grounds...

Disentangling drivers of small mammal diversity in a highly fragmented forest system

Noé De La Sancha, Renan Maestri, Ricardo Bovendorp & Christopher Higgins
The Atlantic Forest is the second most diverse forest system in South America and only a fraction of its original distribution remains. In this study, we aim to use robust datasets of small mammals along the entire forest system to disentangle the main drivers for diversity along this gradient. More specifically we aim to disentangle if deforestation (recent), biogeographical variables, including 19 bioclimatic variables (historic), or historical trapping bias best describe patterns of taxonomic, functional,...

A comprehensive sampling of species sheds light on the molecular phylogenetics of Calothecinae (Poaceae, Pooideae): evidence for a new subtribe and multiple genera within the Chascolytrum clade

Leonardo Nogueira Da Silva, Jeffery Saarela, Liliana Essi & Tatiana Souza-Chies
The circumscription of subtribe Calothecinae has undergone several changes since its description. Currently, three genera are considered in the subtribe: Chascolytrum, Laegaardia and Paramochloa, although no phylogenetic evidence for the placement of the two last genera was published so far. In this study we aim to evaluate the circumscription of Calothecinae and the infrageneric classification recently proposed for Chascolytrum using a more comprehensive sampling of taxa and molecular markers. We included species of all genera...

A two-tier bioinformatic pipeline to develop probes for target capture of nuclear loci with applications in Melastomataceae

Johanna Jantzen, Prabha Amarasinghe, Ryan Folk, Marcelo Reginato, Fabian Michelangeli, Douglas Soltis, Nico Cellinese & Pamela Soltis
Premise of the study: Putatively single-copy nuclear (SCN) loci, identified using genomic resources of closely related species, are ideal for phylogenomic inference. However, suitable genomic resources are not available for many clades, including Melastomataceae. We introduce a versatile approach to identify SCN loci for clades with few genomic resources and use it to develop probes for target enrichment in the distantly related Memecylon and Tibouchina (Melastomataceae). Methods: We present a two-tiered pipeline. First, we identified...

Evoregions: mapping shifts in phylogenetic turnover across biogeographic regions

Renan Maestri & Leandro Duarte
1. Biogeographic regionalization offers context to the geographical evolution of clades. The positions of bioregions inform both the spatial location of clusters in species distribution and where their most important boundaries are. Nevertheless, defining bioregions based on species distribution alone only incidentally recover regions that are important during the evolution of the focal group. The extent to which bioregions correspond to centers of independent diversification depends on how clusters of species composition naturally reflect the...

Data from: Resilience of an integrated crop-livestock system to climate change: a simulation analysis of cover crop grazing in southern Brazil

Caitlin Peterson, Lindsay Bell, Paulo Carvalho & Amelie Gaudin
Integrated crop-livestock systems are a form of sustainable intensification of agriculture that rely on synergistic relationships between plant and animal components to bolster critical agroecosystem processes. We simulated cash crop and cover crop productivity dynamics in an integrated beef-soybean cover crop grazing system typical of southern Brazil to gain a better understanding of the impacts of livestock integration on system performance. Long-term historical simulations in APSIM showed that the integrated system resulted in greater system-wide...

Seasonality and interspecific competition shape individual niche variation in co-occurring tetra fish in Neotropical streams

Mayara Neves, Raul Costa-Pereira, Rosilene Luciana Delariva & Clarice Bernhardt Fialho
The drivers of intraspecific niche variation and its effects on species interactions are still unclear, especially in species-rich Neotropical environments. Here, we investigated how ecological opportunity and interspecific competition affect the degree of individual trophic specialization and the population niche breadth in tetra fish. We studied the four ecologically similar species (Psalidodon aff. gymnodontus, P. aff. paranae, P. bifasciatus, and Bryconamericus ikaa) in subtropical headwater streams (three sites with two co-occurring species and three sites...

Harrison’s rule scales up to entire parasite assemblages but is determined by environmental factors

Renan Maestri, Maico Fiedler, Georgy Shenbrot, Elena Surkova, Sergei Medvedev, Irina Khokhlova & Boris Krasnov
Harrison’s rule states that parasite body size and the body size of their hosts tend to be positively correlated. After it was proposed a century ago, a number of studies have investigated this trend, but the support level has varied greatly between parasite/host associations. Moreover, while the rule has been tested at the individual species level, we still lack knowledge on whether Harrison’s rule holds at the scale of parasite and host communities. Here, we...

Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richness

Jonas Kuppler, Cécile H. Albert, Gregory M. Ames, W. Scott Armbruster, Gerhard Boenisch, Florian C. Boucher, Diane R. Campbell, Liedson T. Carneiro, Eduardo Chacón-Madrigal, Brian J. Enquist, Carlos R. Fonseca, José M. Gómez, Antoine Guisan, Pedro Higuchi, Dirk N. Karger, Jens Kattge, Michael Kleyer, Nathan J. B. Kraft, Anne-Amélie C. Larue-Kontić, Amparo Lázaro, Martin Lechleitner, Deirdre Loughnan, Vanessa Minden, Ülo Niinemets, Gerhard E. Overbeck … & Robert R. Junker
Aim Intraspecific trait variation (ITV) within natural plant communities can be large, influencing local ecological processes and dynamics. Here, we shed light on how ITV in vegetative and floral traits responds to large-scale abiotic and biotic gradients (i.e. climate and species richness). Specifically, we tested if associations of ITV with temperature, precipitation and species richness were consistent with any of from four hypotheses relating to stress-tolerance and competition. Furthermore, we estimated the degree of correlation...

Fast diversification through a mosaic of evolutionary histories characterizes the endemic flora of ancient Neotropical mountains

Thais Vasconcelos, Suzana Alcantara, Caroline Andrino, Félix Forest, Marcelo Reginato, Marcelo Simon & José Pirani
Mountains are among the most biodiverse areas on the globe. In young mountain ranges, exceptional plant species-richness is often associated to recent and rapid radiations linked to the mountain uplift itself. In ancient mountains, however, orogeny vastly precedes the evolution of vascular plants, so species-richness has been explained by species accumulation during long periods of low extinction rates. Here we evaluate these assumptions by analyzing plant diversification dynamicsin thecampo rupestre, an ecosystem associated to pre-Cambrian...

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...

Extending the footprint record of Pareiasauromorpha to the Cisuralian: earlier appearance and wider palaeobiogeography of the group

Lorenzo Marchetti, Sebastian Voigt, Eudald Mujal, Spencer Lucas, Heitor Francischini, Josep Fortuny & Vincent Santucci
Pareiasauromorpha is one of the most important tetrapod groups of the Permian. Skeletal evidence suggests a late Kungurian origin in North America, whereas the majority of occurrences come from the Guadalupian and Lopingian of South Africa and Russia. Pareiasauromorpha footprints include the ichnogenus Pachypes, that is, however, unknown from strata older than late Guadalupian. A revision of several Pachypes-like footprints from the Cisuralian–Guadalupian of Europe and North America confirm the occurrence of this ichnogenus and...

Where are the bats? An environmental complementarity analysis in a megadiverse country

Ludmilla Aguiar, Maria João Ramos Pereira, Marlon Zortea, Ricardo Machado, Ludmilla M. S. Aguiar, Maria João R. Pereira, Marlon Zortéa & Ricardo B. Machado
Aim: Field surveys are necessary to overcome Wallacean shortfalls. The task is even more important when human pressure on tropical – megadiverse – ecosystems is considered. However, due to financial constraints, spatial and temporal prioritization is required. Here we used the concept of environmental complementarity to identify non-surveyed regions for bats that are environmentally different from other already surveyed regions. We highlighted regions in Brazil where field inventories could be conducted to locate new occurrences...

Ecological specialization and niche overlap of subterranean rodents inferred from DNA metabarcoding diet analysis

Carla Martins Lopes, Marta De Barba, Frédéric Boyer, Céline Mercier, Daniel Galiano, Bruno Busnello Kubiak, Renan Maestri, Pedro Joel Silva Da Silva Filho, Ludovic Gielly, Eric Coissac, Thales Renato Ochotorena De Freitas & Pierre Taberlet
Knowledge of how animal species use food resources available in the environment increases our understanding of ecological processes. However, obtaining this information using traditional methods is a hard task for species feeding on a large variety of food items in highly diverse environments. We amplified the DNA of plants for 306 scat and 40 soil samples, and applied an eDNA metabarcoding approach to investigate food preferences, degree of diet specialization and diet overlap of seven...

Data from: Impact of a pre-feeding oral stimulation program on first feed attempt in preterm infants: Double-blind controlled clinical trial

Karine Da Rosa Pereira, Deborah Salle Levy, Renato S Procianoy & Rita C Silveira
Objective: To evaluate the effect of an oral stimulation program in preterm on the performance in the first oral feeding, oral feeding skills and transition time from tube to total oral intake. Study Designer: Double-blind randomized clinical trial including very preterm newborns. Congenital malformations, intracranial hemorrhage grade III or IV, bronchopulmonary dysplasia, and necrotizing enterocolitis were excluded. Intervention group (GI) received an oral stimulation program of tactile extra-, peri-, and intraoral tactile manipulation once a...

Small seed bank in grasslands and tree plantations in former grassland sites in the South Brazilian highlands

Mariana Vieira & Gerhard Overbeck
The soil seed bank can be an important source for vegetation regeneration, and data on the similarity between aboveground vegetation and the seed bank can provide information about successional pathways after disturbances or land-use change. We conducted this study in natural grasslands in the subtropical highland region in southern Brazil. We evaluated the effect of silviculture on richness, density, and composition of the seed bank at former grassland sites converted to pine plantations 25 years...

The ontogenetic pattern of neurocentral suture closure in the axial skeleton of Hyperodapedontinae (Archosauromorpha: Rhynchosauria) and its evolutionary implication

Clara Heinrich, Voltaire Paes Neto, Marcel Lacerda, Agustin Martinelli, Maico Fiedler & Cesar Schultz
Understanding ontogeny of a taxon is a crucial step to properly elucidate its taxonomy and evolution. However, aside from histological data, osteological criteria for assessing maturity are considered lineage specific or controversial. The sequence of neurocentral suture closure of the axial skeleton of extant crocodilians, which occurs in a postero-anterior sequence, has being used as a non-destructive method to determine maturity in extinct reptiles. However, the use of this criterion in extinct archosaurs not closely...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Federal University of Rio Grande do Sul
  • University of Sao Paulo
  • Grenoble Alpes University
  • Bernardino Rivadavia Natural Sciences Museum
  • Universidade Federal de Goiás
  • Victoria University of Wellington
  • University of Pretoria
  • University of Avignon
  • Duke University
  • Estonian University of Life Sciences