scholarly journals Bat diversity of Ilha da Marambaia, Southern Rio de Janeiro State, Brazil (Chiroptera, Mammalia)

2010 ◽  
Vol 70 (3) ◽  
pp. 511-519 ◽  
Author(s):  
EC. Lourenço ◽  
LM. Costa ◽  
RM. Silva ◽  
CEL. Esbérard
Keyword(s):  
Rio De Janeiro ◽  
Abundant Species ◽  
Water Bodies ◽  
Abundance Patterns ◽  
Molossus Molossus ◽  
Bat Diversity ◽  
Janeiro State

Few sites have been well sampled for bats, and samplings in islands are even scarcer. Therefore, the objectives of the present study were: (1) to list the bat species of Ilha da Marambaia; (2) to compare richness, abundance and biomass of bat guilds found there; (3) to analyse abundance patterns of bat species; and (4) to compare richness, abundance and composition of the bat fauna among different kinds of environment. To capture bats we used mist nets set in five different environments, totalising 3559.2 net-hours, during 37 nights between October 2006 and August 2008. A total of 1,133 captures were accomplished, comprising 34 species from five families. The most abundant species was Molossus molossus. Frugivorous bats exhibited higher richness, abundance and biomass if compared to other guilds. Most species (N = 22) exhibited abundances between 1 to 10% of all captures. Sixteen species were restricted to just one of the environments sampled. The high richness may be attributed to sampling carried out in several environments, and to the capture of insectivorous species over water bodies.

scholarly journals Herpetofauna of an Atlantic rainforest area (Morro São João) in Rio de Janeiro State, Brazil

2008 ◽  
Vol 80 (2) ◽  
pp. 291-300 ◽  
Author(s):  
Mauricio Almeida-Gomes ◽  
Davor Vrcibradic ◽  
Carla C. Siqueira ◽  
Mara C. Kiefer ◽  
Thaís Klaion ◽  
...  
Keyword(s):  
Species Composition ◽  
Rio De Janeiro ◽  
Sampling Methods ◽  
Abundant Species ◽  
Study Data ◽  
Tropical Regions ◽  
Plot Sampling ◽  
Reptile Species ◽  
The World ◽  
Janeiro State

We studied the herpetofaunal community from the Atlantic forest of Morro São João, in Rio de Janeiro State, Brazil, and present data on species composition, richness, relative abundance and densities. We combined three sampling methods: plot sampling, visual encounter surveys and pit-fall traps. We recorded sixteen species of amphibians and nine of reptiles. The estimated densities (based on results of plot sampling) were 4.5 ind/100 m2 for amphibians and 0.8 ind/100 m² for lizards, and the overall density (amphibians and lizards) was 5.3 ind/100 m². For amphibians, Eleutherodactylus and Scinax were the most speciose genera with three species each, and Eleutherodactylus binotatus was the most abundant species (mean density of 3.0 frogs/100 m²). The reptile community of Morro São João was dominated by species of the families Gekkonidae and Gymnophtalmidae (Lacertilia) and Colubridae (Serpentes). The gymnophtalmid lizard Leposoma scincoides was the most abundant reptile species (mean density of 0.3 ind/100 m²). We compare densities obtained in our study data with those of other studied rainforest sites in various tropical regions of the world.

scholarly journals Parameters from the community of leaf-litter frogs from Estação Ecológica Estadual Paraíso, Guapimirim, Rio de Janeiro State, southeastern Brazil

2011 ◽  
Vol 83 (4) ◽  
pp. 1259-1268 ◽  
Author(s):  
Carlos F.D. Rocha ◽  
Davor Vrcibradic ◽  
Mara C. Kiefer ◽  
Carla C. Siqueira ◽  
Mauricio Almeida-Gomes ◽  
...  
Keyword(s):  
South America ◽  
Central America ◽  
Leaf Litter ◽  
Rio De Janeiro ◽  
Sampling Methods ◽  
Abundant Species ◽  
Neotropical Region ◽  
Southeastern Brazil ◽  
Plot Sampling ◽  
Janeiro State

We studied the leaf-litter frog community of Estação Ecológica Estadual Paraíso, in Guapimirim, Rio de Janeiro State, southeastern Brazil. Herein we combined three sampling methods (large plots, visual encounter surveys and pit-fall traps) to present data on species composition, richness, relative abundance and densities. The local assemblage of frogs associated to the leaf-litter was composed by 14 species, belonging to nine families. Haddadus binotatus, a direct-developing frog, was the most abundant species in the community. The estimated density of the local leaf-litter frog assemblage based on plot sampling was 4.3 frogs/100 m². Haddadus binotatus had the highest density (1.1 ind/100 m²). Frogs were predominantly found at night. Thoropa miliaris had the largest values of SVL (39.0 ± 10.3 mm), whereas the smallest species were Euparkerella brasiliensis (16.7 ± 2.2 mm) and E. cochranae (16.0 ± 2.7 mm). Rhinella ornata had the highest mean body mass (12.1 ± 7.5 g), and E. cochranae the lowest (0.4 ± 0.2 g). The overall frog mass was 938.6 g/ha. Our data support that higher densities of leaf-litter frogs tend to occur in the Neotropical region compared to the OldWorld tropics, tending to be higher in Central America than in South America.

Diversity of Mosquitoes (Diptera: Culicidae) in the Bom Retiro Private Natural Heritage Reserve, Rio de Janeiro State, Brazil

2022 ◽  
Author(s):  
Amanda Queiroz Bastos ◽  
Cecilia Ferreira de Mello ◽  
Júlia dos Santos Silva ◽  
Hélcio Reinaldo Gil-Santana ◽  
Shayenne Olsson Freitas Silva ◽  
...  
Keyword(s):  
Species Richness ◽  
Rio De Janeiro ◽  
Diversity Index ◽  
Abundant Species ◽  
Immature Stages ◽  
Larval Habitats ◽  
Natural Heritage ◽  
Wiener Diversity Index ◽  
Water Tanks ◽  
Janeiro State

Abstract This study registers the diversity of Culicidae in the Bom Retiro Private Natural Heritage Reserve (RPPNBR), Rio de Janeiro state, Brazil, based on the collection of the immature stages in natural and artificial larval habitats. Larvae and pupae were collected monthly at two sites of the RPPNBR from May 2014 to July 2015 using dippers and aquatic pipettes. The diversity of the mosquito community was described using the Shannon–Wiener Diversity Index (H′), as well as diversity, richness, and dominance of species found in different larval habitats (lake, bamboos, bromeliads, and artificial vessels). The Mann–Whitney test was used to calculate differences between the two natural and artificial habitats. Overall, 15,659 specimens belonging to 25 species, ten genera, and two subfamilies were collected. The most abundant species collected at sites that were reforested recently were Culex pleuristriatus Theobald, 1903, Limatus durhamii (Theobald, 1901), Aedes albopictus (Skuse, 1895), Culex neglectus (Lutz, 1904), and Culex retrosus (Lane & Whitman, 1951). In a forest preserved site, the most abundant species were Cx. neglectus, Culex iridescens (Lutz, 1905), Sabethes identicus (Dyar & Knab, 1907), Wyeomyia arthrostigma (Lutz, 1905), and Li. durhamii. With respect to larval habitats, 0.1% of the specimens were collected along the edge of a lake, 5.5% in bamboos, 35.9% in bromeliads, and 58.4% in artificial containers. Only 5.5% of the specimens were collected in the forest preserved site, with the remaining samples from the site with altered vegetation. A greater species richness and diversity were found in forest-altered sites compared to the forest preserved site. Several species were collected in the water accumulated in the nylon lids of plastic water tanks. Such vessels can promote an increase in mosquito population density in the environment surrounding the study area.

scholarly journals Anurofauna of an Atlantic Rainforest fragment and its surroundings in Northern Rio de Janeiro State, Brazil

2010 ◽  
Vol 70 (3 suppl) ◽  
pp. 871-877 ◽  
Author(s):  
M Almeida-Gomes ◽  
M Almeida-Santos ◽  
P Goyannes-Araújo ◽  
VNT Borges-Júnior ◽  
D Vrcibradic ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Abundant Species ◽  
The State ◽  
Forest Fragments ◽  
Forest Fragment ◽  
The North ◽  
Surrounding Matrix ◽  
Plot Sampling ◽  
Northern Portion ◽  
Janeiro State

We carried out a study on the anurofaunal community from an Atlantic Forest fragment (Monte Verde mountains) and the surrounding area in Cambuci municipality, Rio de Janeiro State, Brazil, which constitutes one of the largest fragments remaining in the largely deforested landscape of the northern portion of the State. We combined three sampling methods: plot sampling, transects and pit-fall traps. We recorded twenty species of amphibians, of which only eleven were found within the forest fragment (and five of these also occurred in the surrounding matrix). Two of the species recorded in the present study (Crossodactylus sp. and Ischnocnema cf. parva) may represent undescribed taxa. Our records expand the distribution range of one species (Scinax trapicheiroi) to the north, and fill a geographic distribution gap for another one (Ischnocnema oea). The estimated overall density of frogs living in the leaf litter of the fragment (based on results of plot sampling) was 3.1 individuals/100 m², with Haddadus binotatus being the most abundant species (2.4 individuals/100 m²). Comparisons of our data with those of other studies suggest that anuran communities in forest fragments ca. 1,000 ha or smaller may be severely limited in their richness, and often include a large proportion of species tolerant to open areas, such as many hylids. Our results show the importance of increasing knowledge about the anurofaunal community of the northern portion of the State of Rio de Janeiro and preserve the forest remnants that still exist in the region.

scholarly journals Desmodus rotundus (Mammalia: Chiroptera) on the southern coast of Rio de Janeiro state, Brazil

2011 ◽  
Vol 71 (3) ◽  
pp. 739-746 ◽  
Author(s):  
LM. Costa ◽  
CEL. Esbérard
Keyword(s):  
Rio De Janeiro ◽  
Domestic Animals ◽  
Southern Coast ◽  
Desmodus Rotundus ◽  
Vampire Bats ◽  
Bat Diversity ◽  
Janeiro State ◽  
Diversity Research

Since the 1990s, attacks by hematophagous bats on humans and domestic animals have been reported both on the continent and on the islands on the southern coast of Rio de Janeiro state. The density of vampire bats was investigated based on percentage of captures during control of Desmodus rotundus samplings and during bat diversity research. In the present work, 203 individuals of D. rotundus were captured from 1993 to 2009, which corresponds to 11.88% of all bat captures carried out for species control in local villages and 1.58% of all captures in faunistic inventories. The density of D. rotundus is high even on the recently occupied islands where domestic animals have been introduced. It is probable that this species dispersed from the continent to the islands due to the introduction of domestic animals.

scholarly journals Ecological risk index for aquatic pollution control: a case study of coastal water bodies from the Rio de Janeiro State, southeastern Brazi

2013 ◽  
Vol 27 (2) ◽  
pp. 104-119 ◽  
Author(s):  
Marcelo Pompêo ◽  
Paula Regina Padial ◽  
Carolina Fiorillo Mariani ◽  
Sheila Cardoso-Silva ◽  
Viviane Moschini-Carlos ◽  
...  
Keyword(s):  
Coastal Water ◽  
Ecological Risk ◽  
Pollution Control ◽  
Rio De Janeiro ◽  
Risk Index ◽  
Aquatic Pollution ◽  
Water Bodies ◽  
Ecological Risk Index ◽  
Janeiro State

scholarly journals Flagellate green algae from four water bodies in the state of Rio de Janeiro, Southeast Brazil

Hoehnea ◽  
2008 ◽  
Vol 35 (3) ◽  
pp. 435-468 ◽  
Author(s):  
Mariângela Menezes ◽  
Carlos Eduardo de Mattos Bicudo
Keyword(s):  
Green Algae ◽  
Rio De Janeiro ◽  
Morphological Analysis ◽  
The State ◽  
Water Bodies ◽  
New Combination ◽  
Floristic Survey ◽  
Southeast Brazil ◽  
First Time ◽  
Janeiro State

Floristic survey of flagellate green algae (Chlorophyceae and Prasinophyceae) from four water bodies in the state of Rio de Janeiro, southeast Brazil. Samples were collected bimonthly from September 1988 to August 1991. Thirty-five taxa of which 31 in Chlorophyceae (24 Chlamydomonadales and seven Volvocales) and four in Prasinophyceae (Polyblepharidales) were identified. Twenty-three taxa are new records for Brazil and 31 are registered for the first time for Rio de Janeiro State. On basis of cell shape, location of the nucleus and degree of longitudinal striations on the chloroplast surface a new combination, Vitreochlamys lefevrei (Bourr.) Menezes & C. Bicudo, is proposed. Integrating studies among morphological analysis on natural/cultured material and characterizing of reproduction/life cycle as well the correlating between the occurrence of the species and environmental conditions are needed in order to better knowledge the degree of phenotypic plasticity within the members of the flagellate green algae in the country.

scholarly journals Distribution of fish assemblages in Lajes Reservoir, Rio de Janeiro, Brazil

2001 ◽  
Vol 61 (4) ◽  
pp. 563-576 ◽  
Author(s):  
F. G. ARAÚJO ◽  
L. N. SANTOS
Keyword(s):  
Rio De Janeiro ◽  
Fish Assemblages ◽  
Spatial Separation ◽  
Abundant Species ◽  
Clear Sign ◽  
Astyanax Fasciatus ◽  
Tilapia Rendalli ◽  
High Dominance ◽  
Distribution Of Fish ◽  
Janeiro State

Spatial distribution of fish assemblages in Lajes Reservoir, a 30 km² impoundment in Rio de Janeiro State (Lat. 22º42'-22º50'S; Long. 43º53'-44º05'W) was assessed to detect patterns of available habitat use by the fish. A standardized monthly sampling program was carried out from January to December 1994 at three zones of the reservoir (upper, near tributary mouths; middle; and lower, near the dam). Fishes were caught by gillnets, (50 m long, 3 m height), with mesh ranging having from 25 to 45 mm between knots, submerged during 12 hours. A total of 5,089 fishes were collected comprising 15 species, 14 genera and 9 families. Loricariichthys spixii, Astyanax bimaculatus, Parauchenipterus striatulus, Astyanax fasciatus parahybae, Oligosarchus hepsetus, Rhamdia parahybae, Hypostomus affinis, and Geophagus brasiliensis were the most abundant species, each contributing above 1% of the total number. Loricariichthys spixii was the dominant species, contributing over 80% of total number and biomass. Fish abundance, number of species, and biomass were higher in the upper zone, but differences from this overall pattern were shown by some species. Loricariichthys spixii and Rhamdia parahybae were more abundant in the upper zone, while all other species showed no differences in their abundance among the zones. Seasonal environmental variables of temperature, pH, transparency, and water level did not show a clear association with fish occurrence. Most fish used the different zones of the reservoir with no clear sign of spatial separation. High dominance of L. spixii, reduced abundance of reolific species Leporinus copelandii and Cyphocharax gilberti, and presence of introduced species such as Cichla monoculus and Tilapia rendalli are indications of antropic effects in the fish community.

scholarly journals Colony size, sex ratio and cohabitation in roosts of Phyllostomus hastatus (Pallas) (Chiroptera: Phyllostomidae)

2010 ◽  
Vol 70 (4) ◽  
pp. 1047-1053 ◽  
Author(s):  
LM. Costa ◽  
EC. Lourenço ◽  
CEL. Esbérard ◽  
RM Silva
Keyword(s):  
Sex Ratio ◽  
Colony Size ◽  
Protected Area ◽  
Rio De Janeiro ◽  
Neotropical Region ◽  
Hollow Trees ◽  
Phyllostomus Hastatus ◽  
Molossus Molossus ◽  
Janeiro State ◽  
Hollow Tree

Phyllostomus hastatus bat is species broadly distributed over the Neotropical region, which uses as diurnal roosts caves, hollow trees, palm leaves and human buildings. Thirteen diurnal roosts of P. hastatus were analysed from 1990 to 2009 in several localities of Rio de Janeiro State, regarding environment (rural, urban or protected area), type of roost (hollow tree, basement or roof), sex ratio and cohabitation. A nocturnal roost was also analysed. Sex ratio of P. hastatus varied considerably among roosts what may be explained by the fact this species can roost alone, in couples, in harems or in groups of bachelor males. Phyllostomus hastatus was observed in cohabitation with three other species: Molossus rufus, Molossus molossus and Myotis nigricans. Due to the frequency of cohabitation observed between P. hastatus and species of the genus Molossus, one or more advantages for the members of this association may be expected. The simultaneous usage of a feeding roost by a group of bachelor males is unknown information in the literature, and may suggest that this kind of group may interact with each other even when away from their diurnal roosts.

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