scholarly journals Spatial use of rodents (Rodentia: Mammalia) host body surface by ectoparasites

2002 ◽  
Vol 62 (3) ◽  
pp. 419-425 ◽  
Author(s):  
E. B. BITTENCOURT ◽  
C. F. D. ROCHA
Keyword(s):  
Body Surface ◽  
Small Mammal ◽  
Rio De Janeiro ◽  
Atlantic Rainforest ◽  
Southeastern Brazil ◽  
Mammal Species ◽  
Host Body ◽  
Spatial Use ◽  
Small Mammal Species ◽  
Janeiro State

We studied the ectoparasite and the Amblyopinini beetle fauna associated with four small mammal species of the Atlantic Rainforest of Ilha Grande, an island located off the southern Rio de Janeiro State Coast, Southeastern Brazil, analyzing to what extent the parasites were specific to each region of the host body. During the study, a total of 90 individual rodents were captured: 61 Proechimys iheringi Thomas, 1911 (Echymyidae), 22 Sciurus aestuans (Thomas, 1901) (Sciuridae), 4 Oxymycterus sp. (Waterhouse, 1837), and 2 Nectomys squamipes (Brants, 1827) (Sigmodontinae). The data showed that the ectoparasites and Amblyopinini on some rodent hosts in Ilha Grande tend to prefer particular host body sites, and that some ectoparasite species sites may overlap owing to their inaccessibility to the host.

Two new species of Dilobopterus Signoret, 1850 and the male of D. segmentalis (Signoret, 1853) from Southeastern Brazil, with taxonomic notes on the genus (Hemiptera: Cicadellidae: Cicadellini)

Zootaxa ◽  
2017 ◽  
Vol 4281 (1) ◽  
pp. 127
Author(s):  
VICTOR QUINTAS ◽  
MÁRCIO FELIX ◽  
DOUGLAS FELIPE DOS SANTOS LIMA ◽  
GABRIEL MEJDALANI
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
New World ◽  
Atlantic Rainforest ◽  
Southeastern Brazil ◽  
Espírito Santo ◽  
Two New Species ◽  
Espirito Santo ◽  
Janeiro State ◽  
Unknown Male

Two new species of Dilobopterus Signoret, 1850 are described from the Atlantic Rainforest of Rio de Janeiro State, Southeastern Brazil, based on specimens collected in Angra dos Reis (D. nelsoni sp. nov.) and Itatiaia (D. sakakibara sp. nov.). Holotypes are deposited in Museu Nacional, Universidade Federal do Rio de Janeiro. These are the first species of the genus described after the publication in 1977 of the last comprehensive monograph on the New World Cicadellini. We also describe the previously unknown male of D. segmentalis (Signoret, 1853) based on specimens from the Atlantic Rainforest of Espírito Santo State, Southeastern Brazil (municipality of Santa Teresa). We propose a group of species within Dilobopterus (trinotatus group) based on features of the paraphyses of D. trinotatus (Signoret, 1853), D. segmentalis, and D. sakakibara sp. nov.. 

scholarly journals Amphibia, Anura, Parque Estadual do Cunhambebe, Itaguaí municipality, Rio de Janeiro state

Check List ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1047
Author(s):  
Daiane Ouvernay ◽  
Luiz Marcelo de Salles Cunha Fiuza ◽  
Thiago Rodrigues Barbosa ◽  
Ivai Gomes de Lima Cesar de Albuquerque ◽  
Alexandre Fernandes Bamberg De Araujo
Keyword(s):  
Rio De Janeiro ◽  
Atlantic Rainforest ◽  
Southeastern Brazil ◽  
Anuran Amphibians ◽  
Janeiro State

We report a list of the amphibians from the Parque Estadual do Cunhambebe (22°54’07” S, 43°53’33” W) in Itaguaí municipality, an area of Atlantic Rainforest in Rio de Janeiro State, southeastern Brazil. The work was carried out from January to November 2010. We recorded 28 species of anuran amphibians distributed in eight families: Brachycephalidae (3), Bufonidae (2), Craugastoridae (1), Cycloramphidae (2), Hylidae (13), Hylodidae (2), Leiuperidae (1) and Leptodactylidae (4). Adding the species recorded in the Parque Estadual do Cunhambebe in Mangaratiba municipality, the richness of amphibians in the park currently is now 47 species.

NATURAL HISTORY TRAITS OF CROSSODACTYLUS AENEUS (ANURA, LEPTODACTYLIDAE, HYLODINAE) FROM AN ATLANTIC RAINFOREST AREA IN RIO DE JANEIRO STATE, SOUTHEASTERN BRAZIL

2006 ◽  
Vol 1 (1) ◽  
pp. 37-41 ◽  
Author(s):  
Tássia Jordão-Nogueira ◽  
Davor Vrcibradic ◽  
Jorge Antônio L. Pontes ◽  
Monique Van Sluys ◽  
Carlos Frederico D. Rocha
Keyword(s):  
Natural History ◽  
Rio De Janeiro ◽  
Atlantic Rainforest ◽  
Southeastern Brazil ◽  
Janeiro State

Long-term stress level in a small mammal species undergoing range expansion

Mammalia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Adrien André ◽  
Johan Michaux ◽  
Jorge Gaitan ◽  
Virginie Millien
Keyword(s):  
Stress Level ◽  
Species Distribution ◽  
Small Mammal ◽  
Range Expansion ◽  
Mammal Species ◽  
Distribution Ranges ◽  
Northern Edge ◽  
Small Mammal Species ◽  
White Footed Mouse

Abstract Rapid climate change is currently altering species distribution ranges. Evaluating the long-term stress level in wild species undergoing range expansion may help better understanding how species cope with the changing environment. Here, we focused on the white-footed mouse (Peromyscus leucopus), a widespread small mammal species in North-America whose distribution range is rapidly shifting northward. We evaluated long-term stress level in several populations of P. leucopus in Quebec (Canada), from the northern edge of the species distribution to more core populations in Southern Quebec. We first tested the hypothesis that populations at the range margin are under higher stress than more established populations in the southern region of our study area. We then compared four measures of long-term stress level to evaluate the congruence between these commonly used methods. We did not detect any significant geographical trend in stress level across our study populations of P. leucopus. Most notably, we found no clear congruence between the four measures of stress level we used, and conclude that these four commonly used methods are not equivalent, thereby not comparable across studies.

scholarly journals The snake community of Serra do Mendanha, in Rio de Janeiro State, southeastern Brazil: composition, abundance, richness and diversity in areas with different conservation degrees

2009 ◽  
Vol 69 (3) ◽  
pp. 795-804 ◽  
Author(s):  
JAL. Pontes ◽  
RC. Pontes ◽  
CFD. Rocha
Keyword(s):  
Rio De Janeiro ◽  
Secondary Forest ◽  
Southeastern Brazil ◽  
Future Research ◽  
Native Forest ◽  
Abundance Distribution ◽  
Forested Areas ◽  
Undisturbed Forest ◽  
Banana Plantations ◽  
Janeiro State

We studied and compared parameters of the snake community of the Serra do Mendanha, Rio de Janeiro State, southeastern Brazil (22º 48'-22º 51' S and 43º 31'-43º 28' W), such as: abundance distribution, richness, species diversity and biomass, between forested areas, areas under regeneration and agriculture areas (banana plantations); to obtain information about the natural history and facilitate the development of future research. For capturing the snakes we used: pitfall traps, drift-fences and visual search (diurnal and nocturnal) along four transects for each habitat. The captured snakes were measured with a tape and caliper, weighed with dynamometers and sexed with the use of a catheter. The animals marked (with ventral scales cut) were released for posterior recapture. One individual per species was fixed and deposited at the Museu Nacional, Rio de Janeiro. We undertook an effort of 840 man/hour, and captured a total of 207 snakes belonging to 25 species (Colubridae 80.2%, Elapidae 12.6%, Viperidae 6.3% and Boidae 0.9%). The most abundant were: Liophis miliaris (n = 33), Micrurus corallinus and Chironius fuscus (both with n = 26); the least abundant: Elapomorphus quinquelineatus, Siphlophis compressus and Tropidodryas serra (all with n = 1). The species that contributed the greatest biomass were Spilotes pullatus (7,925 g), Chironius laevicollis (4,694 g), Liophis miliaris (3,675 g) and Pseustes sulphureus (3,050 g); those that contributed the lowest biomass were: Siphlophis compressus, Tropidodryas serra (both with 4 g) and Elapomorphus quinquelineatus (3 g). We found significant differences between the sampled habitats at the Serra do Mendanha (undisturbed forest, secondary forest and banana plantations). The results showed that a great reduction in the abundance, richness, diversity and biomass of the snakes occurs when the native forest is replaced by banana plantations.

Response of wildlife to forest herbicide applications in northern coniferous ecosystems

1993 ◽  
Vol 23 (10) ◽  
pp. 2286-2299 ◽  
Author(s):  
R.A. Lautenschlager
Keyword(s):  
Small Mammal ◽  
Growing Season ◽  
Sampling Techniques ◽  
Mammal Species ◽  
Growing Seasons ◽  
Disturbed Areas ◽  
Herbicide Treatments ◽  
Species Specific ◽  
Small Mammal Species ◽  
Coniferous Ecosystems

Reviewed studies of the effects of forest herbicide applications on wildlife often lacked replication, pretreatment information, and (or) were conducted for only one or two growing seasons after treatment. Because of these problems, as well as the use of dissimilar sampling techniques, study conclusions have sometimes been contradictory. A review of eight studies of the effects of herbicide treatments on northern songbird populations in regenerating clearcuts indicates that total songbird populations are seldom reduced during the growing season after treatment. Densities of species that use early successional brushy, deciduous cover are sometimes reduced, while densities of species which commonly use more open areas, sometimes increase. A review of 14 studies of the effects of herbicide treatments on small mammals indicates that like songbirds, small mammal responses are species specific. Some species are unaffected, while some select and others avoid herbicide-treated areas. Only studies that use kill or removal trapping to study small mammal responses show density reductions associated with herbicide treatment. It seems that some small mammal species may be reluctant to venture into disturbed areas, although residents in those areas are apparently not affected by the disturbance. Fourteen relevant studies examined the effects of conifer release treatments on moose and deer foods and habitat use. Conifer release treatments reduce the availability of moose browse for as long as four growing seasons after treatment. The degree of reduction during the growing season after treatment varies with the herbicide and rate used. Deer use of treated areas remains unchanged or increases during the first growing season after treatment. Eight years after treating a naturally regenerated spruce–fir stand browse was three to seven times more abundant on treated than on control plots (depending on the chemical and rate used). Forage quality (nitrogen, ash, and moisture) of crop trees increased one growing season after the soil-active herbicide simazine was applied to control competition around outplanted 3-year-old balsam fir seedlings.

An attempt to determine the size of the Common Barn-owl’s (Tyto alba) hunting area based on its prey composition

2021 ◽  
pp. 175815592110660
Author(s):  
Jenő J Purger ◽  
Dávid Szép
Keyword(s):  
Functional Groups ◽  
Small Mammals ◽  
Small Mammal ◽  
Barn Owl ◽  
Tyto Alba ◽  
Mammal Species ◽  
Open Forest ◽  
Prey Composition ◽  
Small Mammal Species ◽  
Owl Pellets

The relative abundance of small mammal species detected from Common Barn-owl pellets reflects the landscape structure and habitat pattern of the owl’s hunting area, but it is also affected by the size of the collected pellet sample and the size of the supposed hunting area. The questions arise: how many pellets should be collected and analyzed as well as how large hunting area should be taken into consideration in order to reach the best correspondence between the owl’s prey composition and the distribution of habitats preferred by small mammals preyed in supposed hunting areas? For this study, we collected 1045 Common Barn-owl pellets in a village in southern Hungary. All detected small mammal species were classified into functional groups (guilds) preferring urban, open, forest and wetland habitats. The proportion of functional groups was compared to the proportion of these habitats around the pellet collection site within circles of one, two, and three km radius. Saturation curves showed that at least 300 pellets or ca. 600 mammalian remains are required for the detection of the 19 small mammal species. The share of small mammals detected in the prey and their functional groups according to their habitat preference showed an increasing consistency with the distribution of real habitats in the potential hunting area of a radius of 3 km around the owl’s breeding or resting place.

scholarly journals An albino armored catfish Schizolecis guntheri (Siluriformes: Loricariidae) from an Atlantic Forest coastal basin

2005 ◽  
Vol 3 (1) ◽  
pp. 123-125 ◽  
Author(s):  
Marcelo F. G. de Brito ◽  
Érica P. Caramaschi
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Southeastern Brazil ◽  
Janeiro State ◽  
Coastal Basin

We report here on an albino specimen of Schizolecis guntheri caught in the rio Bonito in the rio Macaé basin, Rio de Janeiro State, southeastern Brazil. The hypothesis that albinism is more common in fishes with cryptobiotic and/or nocturnal habits is strengthened by additional records of this chromatic anomaly.

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