Marciel Rodrigues

Universidade Estadual de Santa Cruz · Departamento de Ciências Biológicas (DCB)

The actions required for the conservation of biodiversity depend on the responses of species to habitat loss, which can be neutral, linear or non-linear. Here, we test how the taxonomic, functional, and phylogenetic diversity of aquatic insects, dragonflies, frogs, and terrestrial mammals, as well as their species composition, respond to forest cov...

Motivation Aquatic insects comprise 64% of freshwater animal diversity and are widely used as bioindicators to assess water quality impairment and freshwater ecosystem health, as well as to test ecological hypotheses. Despite their importance, a comprehensive, global database of aquatic insect occurrences for mapping freshwater biodiversity in macr...

In the south of Bahia state, a large part of the native Atlantic Forest areas has been modified for the cultivation of cocoa (Theobroma cacao). These crops are cultivated under the shade of the canopy of native trees, a system locally known as the “cabruca” agroforestry system. This study aimed to evaluate the relationship of Odonata assemblages (a...

Tropical forests such as the Atlantic Forest are under constant threats from the impact of human activities, mostly being caused by the loss of native forest areas for other land uses. This study aimed to evaluate the effect of changes in land use for pasture and cacao cultivation on the richness and composition of Odonata assemblages in comparison...

Understanding the interactions between protected areas and the surrounding landscape has become a central issue to conservation of biodiversity. The important role of protected areas in the preservation of biodiversity in tropical hotpots is widely recognized, but the role of the landscape surrounding those hotspots is poorly understood, particular...

Land use changes from native vegetation to agriculture, livestock grazing, and urban development are among the main problems related to biodiversity loss worldwide. In this paper we evaluate how land use changes (eucalypt plantation and pasture) affect the richness and assemblage of wasps (Braconidae, Ichneumonidae, Pompilidae, and Vespidae), in co...

One of the major challenges of ecologists and biogeographers is to understand how species are globally distributed. Two of the most well-studied large-scale patterns in species distributions are the Rapoport’s rule and the Latitudinal Diversity Gradient (LDG). We aimed to address whether Neotropical odonates follow the Rapoport’s rule and if there...

A check-list of the Odonata species of the state of Bahia, Brazil, including information on their ecology and distribution in this state, was compiled. The data was collected by consulting databases and from specimens deposited in the collection of the Laboratory of Aquatic Organisms (LOA) of the State University of Santa Cruz. Altogether, 174 spec...

The changes in land use caused by human activities have directly impacted aquatic ecosystems, making these environments some of the most threatened places on the planet. It is increasingly necessary and urgent to develop tools to identify and assess the effects of human impacts on ecosystems and biodiversity. This study aimed to evaluate whether th...

Leptagrion acutum Santos, 1961 is endemic to Brazil and, since 2003, listed as Critically Endangered in the Red Book of Threatened Brazilian Fauna. In this study, L. acutum is recorded for the first time from the state of Bahia, expanding known occurrences of this species to northern areas of the Atlantic Forest. Three males were collected in the V...

The genus Leptagrion Selys, 1876 comprises 17 described species. Of these species, only eight have their immature stage described. In this work, we describe the last instar larva of Leptagrion dispar Selys, 1876. The specimens were collected in areas of Atlantic Forest in three municipalities of the southern region of Bahia, Brazil, in phytotelmata...

Protecting riparian vegetation around streams is vital in reducing the detrimental effects of environmental change on freshwater ecosystems and in maintaining aquatic biodiversity. Thus, identifying ecological thresholds is useful for defining regulatory limits and for guiding the management of riparian zones towards the conservation of freshwater...

Knowing the biodiversity of a given site is the first step in establishing strategies for its conservation, monitoring and sustainable use. The objective of the present study was to catalogue the Odonata community of two ponds in the Cerrado-Pantanal ecotone area. Collections were carried out between October 2012 and September 2013, encompassing di...

The scarcity of studies on fauna inventories, especially those addressing insects, is a large problem in many regions of Brazil. To contribute to taxonomic knowledge and broaden the distribution of the order Odonata, we present a survey of odonate fauna of the Maracaju Hills in the state of Mato Grosso do Sul, Brazil. Ten samplings were performed b...

Veredas (palm swamps) play a critical role in maintaining the hydrological system and they are considered the cradle of the waters of the Brazilian Cerrado. Currently, veredas are suffering intense human pressure due to the conversion of native landscapes for other land uses as agriculture, pasture and urban environments. Few studies have evaluated...

Humans have altered biodiversity worldwide, including accelerating species extinctions and loss of ecosystem services. Loss of many species is occurring even before they are collected for study, and researchers have recognized seven knowledge shortfalls that affect biodiversity and its use in conservation. This loss is especially true in aquatic ec...

The palm swamps (i.e. Veredas) in the Cerrado, Brazilian Savanna, are priority areas for conservation. The Veredas’ hydrological characteristics are fundamental for the maintenance of biodiversity and economic activities in this region. However, despite this importance, only a few studies have been carried out in these areas, primarily surveys for...

Acanthagrion marinae sp. nov. (Holotype male: BRASIL, Mato Grosso do Sul, Campo Grande, UFMS, 20°29'56.26''S - 54°36'48.43''W, 547m, leg. M.E. Rodrigues, 03.ii.2015, collection code: VZYG437, MLP) is described and illustrated on the basis of 15 males. The new species belongs to the apicale species group by having horns on S10 and sclerotized hooks...

Water mites are common and widespread parasites of some aquatic insects in freshwater habitats. This is the first record of acari Arrenurus Dugès, 1834, as a parasite of Odonata in Brazil. Water mites were sampled from Miathyria marcella (Selys, 1857) and Ischnura fluviatilis (Selys, 1876).

• Oviposition site selection by aquatic insects is usually influenced by both aquatic and terrestrial cues. Landscape changes (e.g. native vegetation loss) can affect the level of the reproductive success in aquatic insects, changing local species composition and richness. • We investigate whether forest cover loss around streams influences the nu...

Here we provide an updated checklist of the odonates from Bodoquena Plateau, Mato Grosso do Sul state, Brazil. We registered 111 species from the region. The families with the highest number of species were Libellulidae (50 species), Coenagrionidae (43 species) and Gomphidae (12 species). 35 species are registered in the IUCN Red List species, four...

We present a DNA barcoding study of Neotropical odonates from the Upper Plata basin, Brazil. A total of 38 species were collected in a transition region of " Cerrado " and Atlantic Forest, both regarded as biological hotspots, and 130 cytochrome c oxidase subunit I (COI) barcodes were generated for the collected specimens. The distinct gap between...

Full neighbor-joining tree with BOLD accession numbers following each taxonomic name. (PDF)

Metadata for each of the specimens used for the present study. (XLSX)

RESUMO Nós registramos 198 espécies de Odonata para o Estado de Mato Grosso do Sul, distribuídas em dez famílias: Calopterygidae (6 spp.), Coenagrionidae (58 spp.), Dicteriadidae (1 sp.), Lestidae (5 spp.), Protoneuridae (10 spp.), Pseudostigmatidae (1 sp.), Aeshinidae (8 spp.), Corduliidae (1 sp.), Gomphidae (13 spp.) e Libellulidae (95 spp.). Uma...

Commonly called “helicopter damselflies”, Mecistogaster species (Coenagrionidae) are recognized by their large body size in comparison with other Odonata species, ability to flap both anterior and posterior wings in opposite directions, and preference for dense forest. These species feed on spiders and require trunks or plants that can accumulate w...

Studies on phylogenetic community ecology usually infer habitat filtering when communities are phylogenetically clustered or competitive exclusion when communities are overdispersed. This logic is based on strong competition and niche similarity among closely related species—a less common phenomenon than previously expected. Dragonflies and damself...

Odonates are suggested as bioindicators of human impact. However, their complex life cycles add additional challenges in the practical use as bioindicators, because the level of taxonomic identification could be dependent on life-history stage and, during their ontogeny, dramatic changes occur in their niche (ontogenetic niche shifts). Considering...

The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted...

The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted...

The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted...

The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted...

The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted...

Water mites are common and widespread parasites of some aquatic insects in freshwater habitats. This is the first record of acari Arrenurus Dugès, 1834, as a parasite of Odonata in Brazil. Water mites were sampled from Miathyria marcella (Selys, 1857) and Ischnura fluviatilis (Selys, 1876).

It is essential to identify changes in populations of organisms over time and locate the lineages according to their contemporary repre sentatives, facilitating learning consistent with current biological knowl edge. Therefore, in this work we carry out a qualitative analysis on the Systematic and Phylogenetic content in five books recommended by t...

The larva of Archilestes exoletus (Hagen in Selys, 1862) is described and illustrated based on exuviae of reared larvae collected in Cascavel, State of Parana, Brazil. The larva of A. exoletus can be distinguished from other species of Archilestes of which the larva has been described by the absence of a lateral spine at the margin of the 4(th) abd...

A larva de último estádio de Oxyagrion sulmatogrossense Costa, Souza & Santos 2000 é descrita e ilustrada a partir de material procedente de Cascavel, Paraná, Brasil.Description of the last instar larva of Oxyagrion sulmatogrossense Costa, Souza & Santos(Odonata, Coenagrionidae) Abstract. The last instar larva of Oxyagrion sulmatogrossense Costa, S...