Rony Peterson Santos Almeida

• PhD
• Professor (Associate) at Federal University of Sergipe

Two new records of gynandromorphs in Xylocopa Latreille, 1802 (Hymenoptera, Apidae). Gynandromorphs are deviant morphological individuals with genetically distinct male and female tissues. Records of sex anomalies seems to be important to better understand the mechanisms regulating phenotypic expression. Herein, two new cases of gynandromorphs in c...

Twigs in leaf litter represent an important nesting resource for ant colonies. Twig diameter strongly influences the occupation of twigs by ants, possibly determining the size of colonies. Given that uncolonized twigs are common in leaf litter, we tested the hypothesis that ant species occupy twigs with a similar size (i.e., resource use overlap)....

Species loss in tropical regions is forecast to occur under environmental change scenarios of low precipitation. One of the main questions is how drought will affect invertebrates, a key group for ecosystem functioning. We use 1 year of data from a long-term rainwater exclusion experiment in primary Amazonian rainforest to test whether induced wate...

There is often a vertical stratification of the vegetation in tropical forests, where each forest stratum has a unique set of environmental conditions, including marked differences in habitat heterogeneity, physical complexity, and microclimate. Additionally, many tropical forests are highly seasonal, and we need to consider the temporal variation...

Insect pollinators, including bees and wasps, are facing a marked decline in their native populations, caused mainly by human activities, such as forest fragmentation, urbanization, and the use of agrochemicals. To help mitigate the rapid decline of pollinators, new efforts towards understanding basic and applied aspects of these organisms are nece...

This short note is a report of Acromyrmex rugosus collecting a slice of mushroom during its foraging. This behavior was already described for other Acromyrmex species, but our register of A. rugosus collecting Gymnopilus cf. peliolepis is unprecedented and present insights about this behavior. The ants collected were close to a nest of Atta sexdens...

Ongoing environmental change is forecast to lead to lower precipitation and concomitant species losses in tropical regions. These losses may affect generalist species that provide essential ecosystem services, such as controlling the rate at which nutrients become available for uptake by other organisms in tropical forests. Here, we use a long‐term...

The genus Solenopsis is widely distributed in the Neotropical region, mainly in South America. In Brazil, the species S. invicta and S. saevissima , known as fire ants, cause significant impacts, especially in agricultural areas in open environments with little vegetation. Soil cover and environmental variables can influence the dimensions and occu...

Blowflies are often the first to colonize a cadaver, making them valuable forensic indicators for estimating the post-mortem interval (PMI). However, understanding the decomposition process by blowflies in practice presents challenges due to the direct influence of adults and larvae on the process. Environmental factors can either hinder or stimula...

Understanding how local extinctions caused by urbanization affects the distribution of functional traits within natural communities can provide essential information for biodiversity conservation within urban ecosystems. This is especially urgent in the tropics, where urban areas are often surrounded by highly diverse tropical forests. Here, we ass...

Fallen twigs on forest floors are an important nesting resource for ants. Despite their abundance in the leaf litter, these twigs are not always colonized, since various attributes affect their occupancy. However, the morphological parameters of ants are potentially linked to the entrance hole size in arboreal species, which will vary among castes....

Este material é o primeiro de uma série de cartilhas destinadas a reunir informações sobre o desenvolvimento do projeto “Avaliação dos Efeitos Antropogênicos e Análise da Meiofauna Bentônica como Bioindicador da Qualidade da Água em Ecossistemas Amazônicos”, desenvolvido pelo Museu Paraense Emílio Goldi, em colaboração com pesquisadores de diversas...

The distribution of amphibians is conditioned by historical factors and ecological drivers. Thus, Ecological Niche Models are important tools to provide information on the potential distribution of the species and determine where they will be requirements in future. Mainly, rare species or with restricted areas of occurrence, because this informati...

Graphical abstract Highlights d Ecological metadata were compiled for 7,694 sites across the Brazilian Amazon d Accessibility and proximity to research facilities influenced research probability d Knowledge gaps are greater in uplands than in wetlands and aquatic habitats d Undersampled areas overlap predicted hotspots of climate change and defores...

The foraging activity can be defined as the search for food resources and is an activity of utmost importance for ant colony maintenance. Workers can be exposed to adverse environmental conditions during foraging, and because of it, some species can adjust their foraging behavior to achieve greater success in the search for resources. The foraging...

The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scattered across the published, peer‐reviewed, and gray literature and in unpublished raw data. Camera traps are an effective non‐invasive method of surveying vertebrates, applicable to different scales of time and...

The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scattered across the published, peer-reviewed, and gray literature and in unpublished raw data. Camera traps are an effective non-invasive method of surveying vertebrates, applicable to different scales of time and...

Ants, an ecologically successful and numerically dominant group of animals, play key ecological roles as soil engineers, predators, nutrient recyclers, and regulators of plant growth and reproduction in most terrestrial ecosystems. Further, ants are widely used as bioindicators of the ecological impact of land use. We gathered information of ant sp...

An understanding of the spatiotemporal patterns of species distribution is a major goal in community ecology. This understanding is particularly challenging for highly seasonal and diverse habitats, such as transition zones between major biomes, like the Cerrado-Amazon transition (CAT). Within the CAT, there are many kinds of vegetation, including...

Neste trabalho buscamos avaliar a influência das variáveis climáticas (precipitação e temperatura) na distribuição de plantas exóticas invasoras em Sergipe, Brasil. Para isso, percorremos 550 km de rodovias do Estado registrando as plantas exóticas invasoras e relacionamos posteriormente com variáveis climáticas disponíveis em base de dados. No tot...

The state of Pará in northern Brazil is located entirely within the Amazon Basin and harbors a great diversity of landscape and vegetation types that support high levels of biodiversity. Here, we provide a comprehensive inventory of ant species and their distribution in Pará. This regional list is based on an extensive review of species records fro...

The present short communication brings up the first predation record of T. hygomi by a bird, in this case, Turdus leucomelas Vieillot, 1818. The predation event was recorded on 25 March 2018 at 08:38 h in Parque Nacional Serra de Itabaiana (PARNASI), municipality of Areia Branca, state of Sergipe, northeastern Brazil.

Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropica...

Environmental change scenarios caused by low precipitation forecast species loss in tropical regions. We use one year of data from a long-term rainwater exclusion experiment in primary Amazonian rainforest to test whether induced water stress and covarying changes in soil moisture, soil respiration, tree species richness, diversity, size, and total...

Mecanismos responsáveis pela coexistência de espécies no ambiente têm implicações consideráveis na estruturação da fauna local. Aqui, avaliamos a estrutura da comunidade de formigas em uma área de floresta amazônica preservada, utilizando a circunferência das árvores como um parâmetro de heterogeneidade ambiental. Para isso, selecionamos 29 árvores...

The availability of nutrients in the soil acts as a filter in the ants that inhabit this layer, affecting their foraging patterns and showing preferences or limitations on their nutritional needs. Especially in environments far from the ocean, the salt deficit can be a limiting resource in the environment. Here, we test whether changes in species r...

Little is known about the composition of the bee community in the Cerrado-Amazon transition area. Herein, we present the results of a bee survey done within the municipality of Conceição do Araguaia, in the state of Pará. Six fragments were sampled twice (once in the dry season and once in the rainy season) using three methods of collecting: arbore...

We present the first record of Spilotes sulphureus for the state of Sergipe. In Brazil, this species is distributed Amazon Rainforest, Atlantic Forest and Caatinga biomes. This large-bodied snake has arboreal habit, is diurnal, has oviparous reproduction, feeds on birds, eggs, lizards, bats, amphibians and small mammals and presents the defensive b...

The genus Xenohyla is currently composed of two species, X. truncata (Izecksohn, 1959) and Xenohyla eugenioi Caramaschi, 1998. Both species are usually found inside bromeliads; X. truncata inhabits the restingas of the state of Rio de Janeiro, southeastern Brazil, and X. eugenioi transitional areas between the Atlantic Forest and the Caatinga biome...

We present the first record of Scinax nebulosus for the State of Sergipe, in the Atlantic Forest, Brazil.