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Introduction
Sônia Talamoni currently works at the Departamento de Ciências Biológicas, Pontifícia Universidade Católica de Minas Gerais. Sônia does research in Zoology and Ecology
Publications
Publications (61)
Vision is an extremely important sense in bats and can influence foraging activities. The present study aimed to evaluate morphometric aspects of the eyeballs of Neotropical bats with different feeding habits. Based on the hypothesis that frugivorous and nectarivorous bats likely possess better visual resolution compared to insectivorous and sangui...
Although bats are responsible for many ecosystem services on which humans depend, they are frequently exposed to multiple anthropogenic stressors. Heavy metal (HM) exposure is an emerging threat of great significance to bats, yet the toxicity threshold for most metallic elements remains unknown. The greatest diversity of bats worldwide is in the Ne...
Morcegos da espécie Anoura geoffroyi possuem ampla distribuição na região neotropical, ocorrendo nas Américas do Norte, Central e do Sul. A formação de grandes colônias potencializa o importante papel ecológico desenvolvido pela espécie na polinização de grande variedade vegetal. Neste trabalho, foi realizado o estudo concomitante em duas colônias...
Bats are parasitized by many different arthropods, among which the dipteran families Nycteribiidae and Streblidae are exclusive to bats. Researches that relate the ecology of ectoparasites with their hosts are fundamental for understanding issues related to the interactions between these two groups, in addition to epidemiological aspects of pathoge...
We describe for the first time the displacement mechanism of migratory testis in Nyctinomops laticaudatus, which is little known in bats, in addition to histological analysis of its gonads. Data on testis anatomy and activity were obtained from 20 males. Males had migratory testes as they are displaced in the inguinal canals between intra and exter...
Yellowish myotis is a Neotropical vespertilionid bat that presents a seasonal reproduction. The sperm is produced in the Mature stage, stored in the Regressed stage and released in the Rest stage (mating period). Aiming to understand, for the first time, the relationship between testis and epididymis physiology in yellowish myotis reproduction, the...
Parasitic relationships between Neotropical bats and their ectoparasites are not well known, even though parasitism is one of the factors that can affect the fitness of a host population. This study characterized parasite-host relationships in relation to sex, age, body size and reproductive status in a population of Anoura geoffroyi using the indi...
Myotis levis (yellowish myotis) is a small Neotropical insectivorous vespertilionid bat that provides valuable ecosystem services, such as control of disease vectors and agricultural pests. Aiming to describe the fluctuations of the reproductive organs throughout the year, the gonads and epididymis from 124 adult bats were histologically evaluated....
Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In...
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...
Este compêndio de trabalhos técnico-científicos elaborados na Gerência
de Espeleologia e Tecnologia trata-se de uma síntese dos principais
artigos publicados em periódicos nacionais e internacionais e congressos
científicos entre os anos de 2018 e 2019.
No intuito de se aprimorar os conhecimentos da dinâmica e funcionamento
dos ecossistemas cavern...
The structure and composition of bat assemblages is mostly determined by features of the vegetation at local and landscape scales. We compared the bat assemblage present in a botanical garden with artiicial lakes and exotic plant species to that of the surrounding native forest, which we expected to diier. Over a year of sampling revealed that both...
The mite species Monunguis streblida Wharton, 1938 (Neothrombidiidae) is reported in association with dipteran ectoparasites (Streblidae) of Brazilian bats for the first time. A 1-year study of two populations of the bat Anoura geoffroyi Gray, 1838 in caves in the state of Minas Gerais, Brazil, found them to be parasitized by four species of strebl...
We provide the first report of the frequency of leucism for a species of Neotropical bat. Leucism is an anomaly of the skin pigmentation of an animal that manifests itself as the total or partial loss of the natural color of the species, and can affect part of or the entire body. During a study involving capture and marking individuals of a populat...
Sertoli cells play an essential role in spermatogenesis, being determinant of male reproduction capability. In this study we determined and compared the Sertoli cell efficiency (SCE), i.e. the ratio of the number of round spermatids to the number of Sertoli cells, of three species of Neotropical chiropterans, Anoura geoffroyi, Artibeus lituratus an...
This study investigated the reproductive dynamics of a colony of Geoffroy's tailless bat (Anoura geoffroyi), an important pollinating bat, in a highland area of Southeastern Brazil. The colony was monitored each month from November 2014 to December 2015 with 154 males and 117 females captured. Testicular and ovarian histological data from 31 adult...
The occurrence of anomalous coloration (albinism, leucism and melanism) in mammals is a rare phenomenon in nature, but this phenomenon has been reported for several species of mammals. In this study, we report on the occurrence of leucism in Eira barbara by examining three road-killed individuals and two sightings of live animals in Reserva Particu...
Despite the singular morphology of the male genital system and the different reproductive strategies of marsupials, little emphasis has been given to the testis morphology and spermatogenic kinetics in this mammalian order. The present study aimed to investigate the testis function and the duration of spermatogenesis in the southeastern four-eyed o...
Since bats shelter in roosts during their period of diurnal inactivity, the quality and availability of roosts are important aspects of their ecology. Karst areas have great potential for the availability of day roosts, since they form caves, which serve as bat shelters. Here we characterize the caves used by bats in a preserved karst area of South...
The large fruit-eating phyllostomid bat, Artibeus lituratus (Olfers, 1818), forearm 69-75 mm, body mass 6682 g, has a diversified geographic distribution in the Neotropical region. Therefore it is subjected to different climatic conditions that affect its reproduction, leading to different reproductive strategies such as continuous reproduction, se...
We present here a compilation of the mammal species associated with the Reserva Particular do Patrimônio Natural (RPPN) Santuário do Caraça. From records confirmed by captures, visual observations, and indirect evidence we list 70 species of mammals, including Alouatta guariba, Chrysocyon brachyurus, Leopardus pardalis, Leopardus wiedii, Pecari taj...
Yellowish myotis, Myotis levis, is a seasonal, epididymal sperm-storing Neotropical vespertilionid. In the dry season, males show simultaneous testis regression and sperm storage in cauda epididymis, enabling them to mate during this season. In this study, we investigated seasonal variations in body mass, diameter and height of seminiferous tubules...
The evaluation of the health status of wild popula-tions has received much attention in conservation projects, as it is considered an important but neglected component of species' ecological fitness. Considering the increasing interest in the conservation and health of Neotropical wildlife species, the aim of this study was to improve the knowledge...
New World species of the Hystricognathi comprise a group of rodents that exhibit poorly understood social behaviour. One such species, the echimyid Thrichomys apereoides, has a behavioural and social repertoire which suggests the use of its eversible anal gland in communication between individuals; however, no information on the morphology of this...
With a nearly global distribution the vespertilionid bat Myotis represents one of the most exceptional examples of adaptive radiation among mammals. We investigated the reproductive activity of the vespertilionid bat yellowish myotis, Myotis levis, from a highland area in Southeastern Brazil. The data were obtained through histological analyses of...
The objective of this study was to investigate some parameters of the space use by individuals in a population of the hystricognath rodent Thrichomys apereoides (Lund, 1839), using the spool-and-line tracking technique. This technique is useful for investigating characteristics of habitat use by individuals since it allows the mapping of the places...
In this study, we aimed to assess whether free-ranging wild canids are exposed to heavy metals in one of the most developed and populated regions of Brazil. Hair of 26 wild canids (maned wolves Chrysocyon brachyurus, crab-eating foxes Cerdocyon thous, and hoary foxes Lycalopex vetulus) from the Cerrado biome in Southeast Brazil were analyzed by spe...
Wild canids are under many pressures, including habitat loss, fragmentation and disease. The current lack of information on
the status of wildlife health may hamper conservation efforts in Brazil. In this paper, we examined the prevalence of canine
pathogens in 21 free-ranging wild canids, comprising 12 Cerdocyon thous (crab-eating fox), 7 Chrysocy...
In this study we investigated the male testicular activity and the reproductive condition of females in relation to their external reproductive characteristics (pregnant, lactating, post-lactating) in the phyllostomid bat Artibeus lituratus (Olfers, 1818). Five hundred and twenty six individuals were examined (197 males and 329 females) in the peri...
The spiny rat (Trinomys moojeni) is a rodent found in the Atlantic Forest, which is considered one of the most diverse and threatened biomes in the world. Knowledge on reproductive biology and physiology is critical to conservation and species management, allowing the prevention of extinction and the use of males in natural and artificial reproduct...
Tapirs are considered generalist herbivores and the differences in the proportions of dietary items are often attributed to differences in the habitats where individuals live. This study characterized the feeding habit of Tapirus terrestris (Linnaeus, 1758) in a nature reserve in south-eastern Brazil, located in a region considered a transition zon...
Dietary analysis was performed to determine the variations in diet of some small neotropical species of mammals collected in seasonal areas of the cerrado (a savannah-like grassland) and semi-deciduous forest. Food items were determined based on the analysis of stomach contents of 126 animals (one didelphid and five sigmodontine rodent species). Mo...
A population of the Neotropical marsupial Didelphis albiventris (Lund, 1840) living in an urban forest fragment was studied. Population structure and the influence of sex and age on two variables related to habitat use (Daily home range MCP and Habitat use intensity UI) obtained by the spool-and-line technique were analysed. There were 20 males...
This article presents a simple, safe and efficient method for the capture and chemical immobilization of three species of wild canids from the Serra do Cipó National Park region, in the Cerrado biome of Southeastern Brazil. Morphological measurements and anesthesia data obtained during the captures are also described. Such data are essential due to...
This article presents a simple, safe and efficient method for the capture and chemical immobilization of three species of wild canids from the Serra do Cipó National Park region, in the Cerrado biome of Southeastern Brazil. Morphological measurements and anesthesia data obtained during the captures are also described. Such data are essential due to...
We present new data on the life history and a new locality of occurrence ofTrinomys moojeni (Pessôaet al., 1992). The study was conducted in a region considered to be a transition zone between the Cerrado and the Atlantic Forest
biomes in Minas Gérais, Brazil. Animals were sampled by the capturemark-recapture (CMR) methods between January 2001 and...
We present new data on the life history and a new locality of occurrence of Trinomys moojeni (Pessoa et al., 1992). The study was conducted in a region considered to be a transition zone between the Cerrado and the Atlantic Forest biomes in Minas Gerais, Brazil. Animals were sampled by the capture-mark-recapture (CMR) methods between January 2001 a...
We describe the foraging behaviour of the Brazilian squirrelSciurus aestuans Linnaeus, 1776 in a natural free-living population, in an area with a high concentration of palm fruitsSyagrus romanzoffiana (Chamisso) Glassman. Our objective was to investigate if the abundance ofS. romanzoffiana fruits, an important food item for squirrels, temporally i...
Transmission of disease between wildlife, domestic animals, and humans is of great concern to conservation issues and public health. Here we report on the prevalence of anti-Leishmania sp. antibodies in 21 wild canids (7 Chrysocyon brachyurus, 12 Cerdocyon thous, and 2 Lycalopex vetulus) and 74 free domestic dogs (Canis familiaris) sampled around t...
The reproductive activity of two species of wild rodents was studied in the Serra do Rola-Moça State Park (PERM), in the state of Minas Gerais, Brazil. From October 1998 to October 1999 specimens of Akodon montensis (Thomas 1913) were captured in an area of seasonal semi-deciduous forest, while specimens of Bolomys lasiurus (Lund 1840) were capture...
Não existe na literatura a descrição de ninhos de Sciurus ingrami Thomas, 1901. Neste estudo, foi examinada a distribuição espacial de ninhos desta espécie, localizados em área de vegetação de crescimento secundário, próxima a área construída da Reserva Particular do Patrimônio Natural Serra do Caraça, Minas Gerais, onde há grande concentração da p...
Based on the finding of remains (tracks, scats, and hairs), an analysis was made of the core area and centre of activity of maned wolves, Chrysocyon brachyurus (Illiger, 1815), living in a private natural reserve in which ecotourism activities are developed and these animals are daily fed bovine meat. A total of 465 samples of remains were recorded...
From the analysis of 230 scats, the diet of the maned wolves, Chrysocyon brachyurus (Illiger, 1815), was determined in a private natural reserve in southeastern Brazil in which ecotourism activities are developed and the animals are deliberately fed bovine meat. A total of 569 occurrences of food items were recorded, of which 56.8% were of animal o...
The Serra do Caraça Reserve is situated in the southern portion of the Espinhaço Mountain Range, and contains areas of "campos de altitude", "cerrado" and atlantic forest. This study had as its objective the registering of the bats species that occur in the reserve. The data collection was carried out in one year through monthly samplings, using mi...
A community of small mammals was studied in southeastern Brazil from September 1992 to August 1993. Species composition and population parameters of the most abundant species were recorded in semideciduous forest, gallery forest and campo cerrado (grassland savanna). Four species of marsupials and ten species of rodents were caught. The opossums Mi...
This booklet/folder (10 pages, 14 photographs) contains a list of mammals from Cerrado Region preserves in South-east Brazil. There are comments and photographs on some species and their conservation.
The booklet/folder (9 pages, 10 photographs) contains data on the Maned Wolf from a Cerrado Region preserve in South-east Brazil. There are comments and photographs on this canid ecology and conservation.
Analysis of 105 scats of the maned wolf (Chrysocyon brachyurus) collected in central Brazil yielded 304 occurrences of food items of which fruits of Solanum lycocarpum, rodents, and birds accounted for 61.5%. By analysis of minimum number of individual animals, rodents and birds were 75% of a total of 156 prey. On the other hand, fruits of S. lycoc...