186 Works

Data from: Rediscovery of the enigmatic fungus-farming ant \"Mycetosoritis\" asper Mayr (Hymenoptera: Formicidae): Implications for taxonomy, phylogeny, and the evolution of agriculture in ants

Jeffrey Sosa-Calvo, Ana Ješovnik, Heraldo L. Vasconcelos, , Ted R. Schultz & Mauricio Bacci
We report the rediscovery of the exceedingly rarely collected and enigmatic fungus-farming ant species Mycetosoritis asper. Since the description of the type specimen in 1887, only four additional specimens are known to have been added to the world's insect collections. Its biology is entirely unknown and its phylogenetic position within the fungus-farming ants has remained puzzling due to its aberrant morphology. In 2014 we excavated and collected twenty-one colonies of M. asper in the Floresta...

Data from: Body size and allometric shape variation in the molly Poecilia vivipara along a gradient of salinity and predation

Marcio S Araujo, S Ivan Perez, Maria Julia C Magazoni & Ana Cristina Petry
Background: Phenotypic diversity among populations may result from divergent natural selection acting directly on traits or via correlated responses to changes in other traits. One of the most frequent patterns of correlated response is the proportional change in the dimensions of anatomical traits associated with changes in growth or absolute size, known as allometry. Livebearing fishes subject to predation gradients have been shown to repeatedly evolve larger caudal peduncles and smaller cranial regions under high...

Data from: Long-distance pollen and seed dispersal and inbreeding depression in Hymenaea stigonocarpa (Fabaceae: Caesalpinioideae) in the Brazilian savannah

Marcela A. Moraes, Thaisa Y.K. Kubota, Bruno C. Rossini, Celso L. Marino, Miguel L.M. Freitas, Mario L.T. Moraes, Alexandre M. Da Silva, Jose Cambuim & Alexandre M. Sebbenn
Hymenaea stigonocarpa is a Neotropical tree that is economically important due to its high-quality wood; however, because it has been exploited extensively, it is currently considered threatened. Microsatellite loci were used to investigate the pollen and seed dispersal, mating patterns, spatial genetic structure (SGS), genetic diversity, and inbreeding depression in H. stigonocarpa adults, juveniles and open-pollinated seeds, which were sampled from isolated trees in a pasture and trees within a forest fragment in the Brazilian...

Data from: Cryptic genetic diversity is paramount in small-bodied amphibians of the genus Euparkerella (Anura: Craugastoridae) endemic to the Brazilian Atlantic Forest

Luciana A. Fusinatto, João Alexandrino, Célio F. B. Haddad, Tuliana O. Brunes, Carlos F. D. Rocha & Fernando Sequeira
Morphological similarity associated to restricted distributions and low dispersal abilities make the direct developing “Terrarana” frogs of the genus Euparkerella a good model for examining diversification processes. We here infer phylogenetic relationships within the genus Euparkerella, using DNA sequence data from one mitochondrial and four nuclear genes coupled with traditional Bayesian phylogenetic reconstruction approaches and more recent coalescent methods of species tree inference. We also used Bayesian clustering analysis and a recent Bayesian coalescent-based approach...

Data from: Predicted 2100 climate scenarios affects growth and skeletal development of tambaqui (Colossoma macropomum) larvae

Ivã G. Lopes, Thyssia B. Araújo-Dairiki, Juliana T. Kojima, Adalberto L. Val & Maria C. Portella
Climate changes driven by greenhouse gas emissions have been occurring in an accelerated degree, affecting environmental dynamics and living beings. Among all affected biomes, the Amazon is particularly subjected to adverse impacts, such as temperature rises and water acidification. This study aimed to evaluate the impacts of predicted climate change on initial growth and development of an important Amazonian food fish, the tambaqui. We analyzed growth performance, and monitored the initial osteogenic process and the...

Data from: Defaunation and fragmentation erode small mammal diversity dimensions in tropical forests

Ricardo S. Bovendorp, Fernanda T. Brum, Robert A. McCleery, Benjamin Baiser, Rafael Loyola, Marcus V. Cianciaruso & Mauro Galetti
Forest fragmentation and defaunation are considered the main drivers of biodiversity loss, yet the synergistic effects of landscape changes and biotic interactions on assemblage structure have been poorly investigated. Here, we use an extensive dataset of 283 assemblages and 105 species of small mammals to understand how defaunation of medium and large mammals and forest fragmentation change the community composition and diversity of rodents and marsupials in tropical forests of South America. We used structured...

Data from: Contemporary and historic factors influence differently genetic differentiation and diversity in a tropical palm

Carolina C. Carvalho, Milton C. Ribeiro, Mauro Galetti & Rosane G. Collevatti
Population genetics theory predicts loss in genetic variability because of drift and inbreeding in isolated plant populations; however, it has been argued that long-distance pollination and seed dispersal may be able to maintain gene flow, even in highly fragmented landscapes. We tested how historical effective population size, historical migration and contemporary landscape structure, such as forest cover, patch isolation and matrix resistance, affect genetic variability and differentiation of seedlings in a tropical palm (Euterpe edulis)...

Data from: Partitioning the net effect of host diversity on an emerging amphibian pathogen

C. Guilherme Becker, David Rodriguez, Luís Felipe Toledo, Ana V. Longo, Carolina Lambertini, Décio T. Corrêa, Domingos S. Leite, Célio F. B. Haddad, Kelly R. Zamudio & D. T. Correa
The ‘dilution effect’ (DE) hypothesis predicts that diverse host communities will show reduced disease. The underlying causes of pathogen dilution are complex, because they involve non-additive (driven by host interactions and differential habitat use) and additive (controlled by host species composition) mechanisms. Here, we used measures of complementarity and selection traditionally employed in the field of biodiversity–ecosystem function (BEF) to quantify the net effect of host diversity on disease dynamics of the amphibian-killing fungus Batrachochytrium...

Data from: Evolutionary history of Scinax treefrogs on land-bridge islands in south-eastern Brazil

Rayna C. Bell, Cinthia A. Brasileiro, Celio F. B. Haddad & Kelly R. Zamudio
AIM: We investigated how Pleistocene refugia and recent (~12,000 years ago) sea level incursions shaped genetic differentiation in mainland and island populations of the Scinax perpusillus treefrog group. LOCATION: Brazilian Atlantic Forest, São Paulo state, southeastern Brazil. METHODS: Using mitochondrial and microsatellite loci, we surveyed population structure and genetic diversity in Scinax from five mainland populations and three land-bridge islands to understand the roles of Pleistocene forest fragmentation and sea level incursions on genetic differentiation....

Data from: Competition and resource breadth shape niche variation and overlap in multiple trophic dimensions

Raul Costa-Pereira, Marcio S. Araújo, Franco L. Souza & Travis Ingram
Competition plays a central role in the maintenance of biodiversity. A backbone of classic niche theory is that local coexistence of competitors is favoured by the contraction or divergence of species’ niches. However, this effect should depend on the diversity of resources available in the local environment, particularly when resources vary in multiple ecological dimensions. Here, we investigated how available resource breadth (i.e., prey diversity) and competition together shape multidimensional niche variation (between and within...

Data from: Partitioning the relative contribution of one-phase and two-phase seed dispersal when evaluating seed dispersal effectiveness

Laurence Culot, Marie-Claude Huynen & Eckhard W. Heymann
Seed dispersal effectiveness (SDE) is a conceptual framework that aims at quantifying the contribution of seed dispersal vectors to plant fitness. While it is well recognized that diplochorous dispersal systems, characterized by two successive dispersal steps performed by two different vectors (Phase I = primary seed dispersal and Phase II = secondary seed dispersal) are common in temperate and tropical regions, little attention has been given to distinguishing the relative contribution of one-phase and two-phase...

Data from: Trading heat and hops for water: dehydration effects on locomotor performance, thermal limits, and thermoregulatory behavior of a terrestrial toad

Rodolfo C.O. Anderson, Denis V. Andrade & Rodolfo C. O. Anderson
Due to their highly permeable skin and ectothermy, terrestrial amphibians are challenged by compromises between water balance and body temperature regulation. The way in which such compromises are accommodated, under a range of temperatures and dehydration levels, impacts importantly the behavior and ecology of amphibians. Thus, using the terrestrial toad Rhinella schneideri as a model organism, the goals of this study were twofold. First, we determined how the thermal sensitivity of a centrally relevant trait—locomotion—was...

Data from: The relationship between pond habitat depth and functional tadpole diversity in an agricultural landscape

Cássia De Souza Queiroz, Fernando Rodrigues Da Silva & Denise De Cerqueira Rossa-Feres
One of the most important goals of biodiversity studies is to identify which characteristics of local habitats act as filters that determine the diversity of functional traits along environmental gradients. In this study, we investigated the relationship between the environmental variables of ponds and the functional trait diversity distribution of anuran tadpoles in an agricultural area in southeastern Brazil. Our results show that the functional trait diversity of frog tadpoles has a bell-curve-shaped relationship with...

Data from: Anatomy of the vegetative organs, inflorescence axis and pedicel in the Neoregelia bahiana complex (Bromeliaceae): taxonomic and ecological importance

Kleber Resende Silva, Leonardo M. Versieux & Aline Oriani
Delimitation of Bromeliaceae into genera or species is often problematic, as observed for the Neoregelia bahiana complex, distributed throughout the rocky fields of Espinhaço Range, Brazil. Considering that the anatomical characterisation of different organs is potentially important for taxonomic and ecological interpretation of this complex, we analysed roots, stems (stolon), leaves, inflorescence axes (peduncle), and pedicels in individuals from different populations. In all the studied individuals, the roots are composed of velamen, a heterogeneous cortex,...

Lost and found: frogs in a biodiversity hotspot rediscovered with environmental DNA

Carla Martins Lopes, Délio Baêta, Alice Valentini, Mariana Lúcio Lyra, Ariadne Fares Sabbag, João Luiz Gasparini, Tony Dejean, Célio Fernando Baptista Haddad & Kelly Raquel Zamudio
Declines and extinctions are increasing globally and challenging conservationists to keep pace with biodiversity monitoring. Organisms leave DNA traces in the environment and this free DNA in soil, water, and air is referred to as environmental DNA (eDNA). The analysis of eDNA is a highly sensitive method with the potential to rapidly assess local diversity and the status of threatened species. We searched for DNA traces of 30 target amphibian species of conservation concern, at...

Data from: Genomic selection signatures and genetic variability of farmed tambaqui (Colossoma macropomum) in South America

Vito Mastrochirico-Filho, John Agudelo & Diogo Hashimoto
Tambaqui (Colossoma macropomum) represents the most important neotropical freshwater fish used in aquaculture from South America, whose production is concentrated at low latitudes (close to Equator 0º) where the water temperature is warmer. Understanding how selection shapes genetic variation and the level of genetic structure in farmed populations is of paramount meaning in evolutionary biology. High-throughput sequencing to generate genome-wide data for non-model species allows determining the genomic basis of adaptation to local or farmed...

Tayra (eira barbara) landscape use as a function of cover types, forest protection, and the presence of puma and free-ranging dogs

Rita Bianchi, Julianna Jenkins, Damon Lesmeister, Jéssica Gouvea, Clarice Cesário, Larissa Fornitano, Mateus Oliveira, Kimberly Morais, Renan Ribeiro & Matthew Gompper
The tayra (Eira barbara) is a common and broadly distributed Neotropical carnivore, yet is not well-studied. While this species is apparently associated with forested habitats, it also appears tolerant of some anthropogenic disturbance. We deployed 57 unbaited camera traps (n = 4,923 trap-days) in and around a protected area (Furnas do Bom Jesus State Park, São Paulo, Brazil) to survey for tayra and two potentially interactive species: puma (Puma concolor) and free-ranging dogs (Canis familiaris)....

Landscape structure and local variables affect plant community

Juliana Silveira Dos Santos, Carlos M. Silva-Neto, Thiago Castro Silva, Karoline Nascimento Siqueira, Milton Cezar Ribeiro & Rosane Collevatti
The biodiversity in agricultural landscapes depends on land-use types, natural elements, and farming intensity. The Brazilian Cerrado is a biodiversity hotspot, however, the native vegetation loss rates have increased in the last years, leading several plant species to extinction risk. Here, we analyze the effects of local (soil fertility and litter amount) and landscape variables (patch shape, habitat amount, compositional heterogeneity, matrix dominance and connectivity) on alpha species richness and diversity, and basal area of...

Data from: The circular nature of recurrent life-cycle events: a test comparing tropical and temperate phenology

Vanessa Staggemeier, Maria Gabriela Gutierrez Camargo, José Alexandre Diniz-Filho, Robert Freckleton, Lucas Jardim & Patricia Morellato
1. The high diversity of plant species in the tropics has revealed complex phenological patterns and reproductive strategies occurring throughout the year. Describing and analysing tropical plant phenology, and detecting triggers, demands to consider the circular nature of recurrent life-cycle events and the use of appropriated statistical metrics. 2. Here we explore analytical pitfalls potentially affecting results of studies that do not consider the circular nature of phenology data when comparing resting and non-resting systems,...

Strandings of marine mammals, sea turtles and seabirds along the central-south coast of São Paulo, Brazil, from 2015 to 2018.

Rodrigo Del Rio Do Valle, Carolina Pacheco Bertozzi, Alencar Cabral & André Silva Barreto
To assess the potential impacts on seabirds, turtles and marine mammals from oil and gas production from the oceanic Pre-Salt province at Brazil’s Santos Basin, the Brazilian environmental agency (IBAMA) required PETROBRAS, the main oil company in the basin, to implement the “Programa de Monitoramento de Praias da Bacia de Santos” (Santos Basin Beach Monitoring Program - PMP-BS). Since 2015 PMP-BS has been operating along the states of Santa Catarina, Paraná, São Paulo and Rio...

AVALIAÇÃO DA FUNCIONALIDADE DE COMPÓSITOS DE LÃ DE OVELHA COLOMBIANA CRIOLA COM BORRACHA NATURAL PARA APLICAÇÕES INDUSTRIAIS EM ISOLAMENTO TÉRMICO E ACÚSTICO

Renivaldo Santos
A proposta consiste no desenvolvimento de um novo material compósito a partir de borracha
natural com resíduo de lã de ovelha da raça crioula, proveniente da Colômbia para aplicações como
isolamento acústico e térmico com alto desempenho. Atualmente, a lã de ovelha tem
apenas uma abordagem em relação às indústrias têxteis colombiana e brasileira, espera-se, ser possível
propor uma nova aplicação desse material e abrir possibilidades para novos mercados nesse setor
agrícola que, juntamente com...

INOCULAÇÃO COM FUNGO MICORRIZÍCO E BACTÉRIAS PROMOTORES DE CRESCIMENTO NA NUTRIÇÃO E PRODUÇÃO DE CULTIVARES DE GERGELIM

Marcelo Carvalho Minhoto Teixeira Filho
A cultura do gergelim tem grande potencial para expansão no país, principalmente devido a apresentar um bom nível de resistência à seca e fácil cultivo, adaptada a condições semiáridas, sendo muito cultivada na segunda safra (safrinha), principalmente devido ao seu ciclo, rentabilidade e por ser um período sujeito a estiagem, o que dificultaria sua colheita. O Brasil possui produtividades baixas de gergelim, porém tem sido crescente o cultivo. Com isso faz se necessário o uso...

Etiologia Microbiana e Multirresistência aos Antimicrobianos em Isolados Obtidos de Infecções Umbilicais em Borregos Diagnosticados por Espectrometria de Massa

Thaís Spessotto Bello
The consumption of sheep products and derivatives has increased all over the world,
particularly consumers who are adept at the taste of sheep meat or intolerant of bovine milk.
The first months after birth are considered critical in the life of the sucking lamb, due to the
high occurrence of mortality secondary to umbilical infections, commonly related to
inadequate consumption of colostrum, deficiencies in postpartum umbilical antisepsis, and
maintenance of newborn animals in environments with dirt, feces, and moisture. Umbilical
infections...

Doses de níquel e nitrogênio na nutrição, fisiologia, produção e qualidade da alface americana

Marcelo Carvalho Minhoto Teixeira Filho
Due to the complex dynamics of nitrogen in the soil and high N requirement of leafy vegetables of short cycle, to obtain high lettuce yields it is necessary to apply high doses of N, which provides higher levels of leaf nitrate. Therefore, due to the high concentration of nitrate in the lettuce leaves, which has worried researchers and the population because it provides harmful effects (form nitrosamines that is carcinogenic) to human health; and in...

Emoções, Gosto e Dádiva: O Mercado de Plantas Ornamentais do Estado de São Paulo como Objeto da Sociologia Econômica

Lucas Vasques
Considerando nossos ganhos teóricos, metodológicos e epistemológicos oriundos de estudos anteriores sobre o impacto das emoções na vida econômica (VASQUES; 2019; JARDIM, 2020, 2021), temos como hipótese que emoções influenciam na fabricação social do gosto dos consumidores de plantas ornamentais no Estado de São Paulo. Para isso, teremos como método hipotético-dedutivo com técnicas mistas, de pesquisa qualitativa e quantitativa, utilizando questionários e relatos com lojistas, atacadistas e consumidores de plantas ornamentais, bem como fotografias e...

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