A5062500838- Evolution and Paleontology Studies
- Fish biology, ecology, and behavior
- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Wildlife Ecology and Conservation
- Scarabaeidae Beetle Taxonomy and Biogeography
- Genetic diversity and population structure
- Chromosomal and Genetic Variations
- Plant and soil sciences
- Amphibian and Reptile Biology
- Parasite Biology and Host Interactions
- Fish Biology and Ecology Studies
- Ichthyology and Marine Biology
- Mollusks and Parasites Studies
- Marine animal studies overview
- Mediterranean and Iberian flora and fauna
- Zoonotic diseases and public health
- Genomics and Phylogenetic Studies
- Classical Antiquity Studies
- Aquatic Invertebrate Ecology and Behavior
- Wildlife-Road Interactions and Conservation
- Primate Behavior and Ecology
- Cultural and Mythological Studies
- Morphological variations and asymmetry
- Entomopathogenic Microorganisms in Pest Control
Sofradir (France)
2024
Universidade do Estado do Rio de Janeiro
2015-2024
Instituto Chico Mendes de Conservação da Biodiversidade
2021-2024
International Union for Conservation of Nature (Bangladesh)
2023-2024
Amazon (United States)
2021-2024
Transdata (Brazil)
2024
Multi Electrical System (Suriname)
2021-2024
Proteca (Brazil)
2024
Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão
2024
Universidade Estadual de Mato Grosso do Sul
2024
Itatiaia National Park (PNI) and its surroundings present a unique fauna due to different forest formations with well-defined climatic vegetation bands. The massif has four types that follow an altitudinal gradient: lower montane forest, upper Campos de Altitude. Hence, this region is ideal for studying geographical variation in biological diversity. main objectives of study were report on nonvolant mammal species known occur determine if their distributional pattern related elevation. A...
Here we present a commented list of mammals registered in the Serra da Bocaina National Park. Three field trips (February, 2010, and May July, 2011) were accomplished along RJ-165 highway Municipality Paraty, State Rio de Janeiro, Brazil. Forty-eight species belonging to nine orders recorded. The local mammal fauna could be considered diverse rich, with some regarded as biological indicators habitat quality. Endangered rare rodent like Blarinomys breviceps, Juliomys rimofrons, Thaptomys...
Local abundance results from the interaction between populational and environmental processes. The of species in a community is also one most basic descriptors its structure. Despite importance, information about abundances fragmentary, creating knowledge gap known as Prestonian Shortfall. Here we present comprehensive data set small mammal Atlantic Forest. Data were extracted 114 published sources unpublished collected by our research groups spanning 1943 to 2017. includes 1,902 records at...
From March 1987 to February 1988, Sotalia fluviatilis population size was estimated and behavioral patterns were observed in the Cananéia estuary region, Southeast Brazil. Field observations carried out from shore (40, with a mean observation period of 7.76 ± 2.05 hours day, completing total 310.5 hours) during line transect surveys by boat (55, 10 them 4.44 0.15 each 45 time 20 minutes, totality 64.3 hours). Dolphins occur this region all year round, most commonly small groups, greater...
The genus Rhipidomys (sigmodontine rodents in the tribe Thomasomyini) is a poorly known radiation of Neotropical mice with few studies addressing their systematics and geographic distribution. We describe 2 new species (climbing mice) from southeastern Brazil. One these only type locality additional sites part Minas Gerais, north Serra da Mantiqueira mountain complex. other occurs to south this range eastern Rio de Janeiro São Paulo states, including coastal islands. These can be...
We analyzed the effects that passage through guts of seven didelphid species had on seed germination 10 plant species. This study was conducted in an area riparian woodland a cerrado (savanna) reserve southeastern Brazil. found seeds 23 angiosperm 427 fecal samples obtained from The families most often represented by were Melastomataceae (5 species) and Rubiaceae (4 . Most gut-passed showed no significant difference germinability when compared with hand-extracted seeds. Among ingested seeds,...
Riverine barriers have been associated to genetic diversification and speciation of several taxa. The Rio São Francisco is one the largest rivers in South America, representing third river basin Brazil operating as a geographic barrier gene flow different To evaluate influence small rodents, we investigated structure Calomys expulsus with phylogenetic network analyses cytochrome b DNA. Our results suggested that C. can be divided into 3 subpopulations, 2 on left another right bank this...
The Atlantic Forest is one of South America's most biodiverse regions, hosting a significant portion Brazil's small non-volant mammal diversity, including 267 rodent and 66 marsupial species. Serra dos Órgãos region in Rio de Janeiro state key area for studying this as it houses 32 13 Rodents, unlike marsupials, exhibit high diversity chromosomal forms, which serve important taxonomic tools identifying cryptic Our study used cytogenetic analyses to enhance the resolution understanding...
Phylogenetic relationships of 6 species the genus Akodon have been determined by mtDNA sequence analysis cytochrome-b gene, with majority specimens also identified karyotype. We used maximum parsimony and distance analyses 54 sequences to assess phylogenetic minimum spanning trees compare genetic geographic among populations. The Bolomys was as outgroup. cursor, A. aff. montensis, 3 morphologically cryptic but karyotypically different cursor complex, each formed reciprocally monophyletic...
Chapada Diamantina is located in central Bahia state, and has a large diversity of habitats, including important transitional areas, but remained largely unstudied until now. In the present study we list non-flying mammals National Park surroundings. We captured only small non-volant mammals, medium were assessed through indirect evidences (tracks marks) interviews. recorded 58 species 47 genera from seven Mammalian orders. Seven are included endangered Brazilian by IBAMA IUCN; other...
Abstract Aim We describe patterns of skull size and shape variation in an Atlantic forest endemic rodent to test the influence genetic structure, historical environmental variables upon intraspecific morphological variability. Location South America, Brazil, forest. Methods analyse subtle differences morphology Akodon cursor through geometric morphometrics applied 324 individuals from 12 localities distributed throughout species range. Using cytochrome‐ b gene (cyt‐ ) sequences 125 (38...
Resumo Introdução A febre maculosa é uma doença infecciosa aguda causada por bactérias do gênero Rickettsia e transmitida carrapatos que pode levar à hospitalização e, eventualmente, a óbito causa de quadros mais graves. Objetivo O objetivo deste artigo foi descrever o cenário epidemiológico da nas três unidades federativas maior número notificações óbitos pela no Brasil entre 2007 2016. Método Estudo descritivo com base nos dados das fichas investigação para doença, sendo analisados...
The diversity of Brazilian mammals is among the highest world. However this exceptional still widely unknown and great part it seriously threatened by human activities. In present study we estimated species richness relative abundance medium large size for region Brasilândia de Minas, a city situated in fragmented poorly studied cerrado area Minas Gerais state, Brazil. We obtained 63 records 24 species, including eight with extinction. Our results support hypothesis that many mammal may be...
The species–area relationship was used to test the effects of habitat reduction on proportion tetrapod species that would be considered threatened with extinction, assuming current estimate 19% remaining forest coverage in Rio de Janeiro State, Brazil. Here, estimates from deforestation were compared a Red List produced by experts. Analyses performed with: (1) total pool occur State (159 amphibians, 115 reptiles, 635 birds and 157 mammals); (2) endemic Atlantic (109 46 149 35 mammals)....
We report the results of a terrestrial small mammal survey at one National Park in northeastern Brazil, state Pernambuco. The Catimbau is located within Caatinga domain with characteristic thorn scrub vegetation. Our sampling encompasses several different vegetation/habitat types park area. All specimens collected were prepared as vouchers to be deposited Museu de Zoologia da Universidade São Paulo. Karyotypes obtained for all representative purported species collected. here this first – two...
FOOD HABITS OF BRAZILIAN DIDELPHID MARSUPIALS: ANALISYS CURRENT STATE KNOWLEDGE. We evaluated the current knowledge on feeding habits of Brazilian didelphids, considering available information changes in diet composition between biomes. also compared results obtained from principal methods used studies field. Seasonal variation resource availability appears to have a strong influence for most species, although are merely descriptive, not directly assessing resources environment. Species with...
Among the Oryzomyini (Sigmodontinae), Oecomys is most speciose, with 17 species. This genus presents high karyotypic diversity (2n = 54 to 2n 86) and many taxonomic issues at species level because of presence cryptic overlap morphological characters. For these reasons real number may be underestimated. With aim verifying if taxon catherinae composed more than one species, we made comparative studies on two populations from regions Brazil, Amazon another Atlantic Forest using both classical...
Karyotypic comparisons among five Akodon species showed that they shared a substantial proportion of their chromosome complements, indicated by distinct homologies between chromosomes, arms, or arm regions despite this genus is karyotypically rearranged. A comparison with related outgroup (Bolomys lasiurus) allowed for the recognition ancestral and derived karyotypic traits as well inferring direction several rearrangements. This study lower diploid number are from higher number, mainly 11...
De 1983 a 1984 et de 1987 1988 des groupes Sotalia guanensis ont ete vus leur nombre estime partir d'observations depuis points fixes, l'embouchure la Baie Guanabara ainsi que par transects lineaires en bateau dans baie. Au cours 28 jours cote, 181 (soit 653 individus) vus. Entre 1984, 208 (804 observe grâce 17 lineaires. mars fevrier 1988, 57 (811 egalement Le groupe le plus frequent ne comprend deux dauphins
The geographic distribution of Blarinomys breviceps (Winge) includes few localities in forested areas the Atlantic Rainforest from Bahia state Brazil up to Misiones province Argentina. Here we add 14 new records for species region southeastern Brazil. These findings provided information on morphology, natural history and first karyological data species. During two short surveys, one Santuário da Serra Concórdia, Valença municipality another Fazenda Marimbondo, Mauá municipality, Rio de...
<i>Blarinomys breviceps </i>possesses cryptic and burrowing habits with poorly documented genetics life history traits. Due to its rarity, only a few specimens DNA sequences have been deposited in collections worldwide. Here, we present the most comprehensive cytogenetic molecular characterization of this rare genus. Phylogenetic analyses based on partial cytochrome b were performed, attempting establish relationships among individuals distinct karyotypes along geographic...
Abstract Background The phylogenetic position of the sigmodontine genus Abrawayaomys , historically assigned to tribe Thomasomyini or considered a incertae sedis, was assessed on basis nuclear and mitochondrial DNA sequences obtained from four individuals different localities in Atlantic forest Brazil. Sequences were analyzed context broad taxonomic matrices by means maximum-likelihood (ML) Bayesian analyses (BA). Results differed depending gene analysis performed (interphotoreceptor...