Dênisson da Silva e Souza's research while affiliated with Universidade Federal Rural de Pernambuco and other places
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Publications (19)
Parasites are indicators of the health of ecosystems and their hosts due to their role in ecological and evolutionary processes. Wild animals are hosts of a great diversity of protozoa and helminths that are capable of acting as primary or secondary agents of diseases. In addition, some parasites have zoonotic potential and can compromise human hea...
Callithrix jacchus is a neotropical, arboreal and diurnal primate of the family Callitrichidae, that has its original distribution in the Northeast of Brazil, even in areas that suffer anthropic influence. The anthropic environment may present a high availability of food that can be accessed by wild animals. The main objective of this work was to i...
Spirochetes in the genus Borrelia (Spirochaetes) are the etiological agents of two zoonotic diseases that have rodents as reservoirs: the Lyme disease, transmitted by ixodid ticks (Ixodidae), and tick-borne relapsing fever, which is transmitted mostly by argasid ticks (Argasidae). The information on the epidemiology of pathogens that affect animals...
Hematological studies in crocodilians are important tools in the evolutionary diagnosis and control of sicknesses , such as anaemia, malnutrition, dehydration, inflammation, and parasitism, among others. We aimed to obtain reference intervals for the hemogram of Caiman latirostris in wild populations that inhabit Recife's Metropolitan Region, Perna...
Caatinga and Atlantic Forest are Brazilian biomes threatened by anthropogenic disturbances, which are a serious threat to biodiversity and favor the emergence of zoonotic pathogens. Capybara populations are increasingly present in urban and rural areas due to the loss of their natural habitats. There are no studies on the rickettsial infection in t...
Due to the ecological changes and imbalance in their natural habitat, capybaras have been found in both urban and rural areas in Brazil, which may favor the transmission of pathogens with zoonotic potential. Furthermore, in the northeastern region, there are no studies about the pathogens of free-ranging capybaras. The objective of this study was t...
Due to the degradation and loss of its natural habitat, the presence of capybaras in urban environments and crop areas has been frequently reported in various regions of Brazil. The objective of this study was to identify the parasitic fauna of free-living capybaras in two impacted biomes of the northeastern region (Atlantic Forest and Caatinga), a...
A Universidade Federal Rural de Pernambuco (UFRPE), sede em Recife, encontra-se inserida em um local privilegiado dentro da região metropolitana, fazendo parte da área de amortecimento de uma das Unidades de Conservação de Mata Atlântica o Parque Estadual de Dois Irmãos. Além disso, é um Imóvel de Proteção a Área Verde (IPAV), evidenciando a nossa...
Background:
Callithrix jacchus is a small primate widely used in experimentation, but data on plasma total protein (PTP) values of free-living animals inhabiting its own endemism region are non-existent.
Methods:
Marmosets belonging to two free-living groups were captured for marking and obtaining biological material. The collected blood was cen...
First wild Paleosuchus palpebrosus nest monitoring in northeast Brazil
Recent genetic population studies on Toxoplasma gondii in Brazil have shown large genetic variability. The objective of the present study was to isolate and genotypically characterize T. gondii from free-ranging and captive wild mammals and birds in Pernambuco state, Brazil. Fragments of heart, brain, skeletal muscle and diaphragm tissue from 71 bi...
RESUMO: A distribuição espacial e a abundância de carrapatos em estágio de vida livre foram examinadas em fragmentos de Mata Atlântica no Nordeste do Brasil. O estudo foi realizado em Unidades de Conservação de Proteção Integral Mata do Tapacurá e Mata do Camucim, localizadas no município de São Lourenço da Mata, Pernambuco. Os carrapatos foram cap...
A Unidade de Conservação categorizada em 1998, como
Parque Estadual de Dois Irmãos é um dos maiores fragmentos
urbanos de Mata Atlântica no Estado de Pernambuco, com 1.158 ha.
Nesse maravilhoso local abriga um pouco da história do Recife e de
uma esplendorosa beleza cênica, mas, o que se tem de mais valioso
nesse espaço é a sua biodiversidade....
This paper reports a case of unilateral extracorporeal ectopic testes in a captive coati (Nasua nasua) in the State Park of Dois Irmãos Zoo, Recife/PE, Brazil. The testicle was located in the subcutaneous tissue of the inguinal region not adhered to the surrounding tissues. After bilateral orchiectomy, both testes were measured, fixed with 10% form...
The epidemiological study of pathogens in wild populations in the environment in situ and ex situ is essential for implementation of prevention, control and monitoring of diseases and for development of public policies for public and animal health. The study was conducted at the Zoo of Parque Estadual de Dois Irmãos, Recife/PE, Brazil, from January...
From September 2008 to March 2010, 397 ticks (315 larvae, 33 nymphs, 23 females, and 26 males) were collected from captive and free-living wildlife species in northeastern Brazil. Six tick species were identified, including Amblyomma auricularium (Conil) on Tamandua tetradactyla (L.), Amblyomma dubitatum Neumann on Hydrochaeris hydrochaeris (L.), N...
Citations
... A frequente aparição das espécies na universidade pode dar-se pelo fato de que a UFRPE é um IPAV vizinho da UC Parque Estadual de Dois Irmãos e da UC da Natureza Sítio dos Pintos, e os animais podem utilizar a área como refúgio, funcionando como um corredor ecológico ou área suporte para o Parque Estadual de Dois Irmãos. Das 26 espécies de serpentes registradas para o PEDI (Santos et al., 2017b;Barbosa et al., 2020), 65% compõe a taxocenose da UFRPE. ...
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... In Brazil, there are few studies on contamination by toxic metals in free-ranging animals, especially in the Northeast region. Among the researches carried out in the region, toxic metals were evaluated in dolphins (Sotalia fluviatilis) in Ceará (Monteiro-Neto et al., 2003) and sharks (Rhizoprionodon lalandii, R. porosus, and Sphyrna lewini) in Sergipe (Meneses, 2008), in southern caracaras (Caracara plancus) in Pernambuco , in different bird species in Rio Grande do Norte (Silva, 2019), in different species of marsupials and rodents in Paraíba (Costa, 2020), and capybaras (Hydrochoerus hydrochaeris) in Pernambuco (Yang et al., 2021). This is the first study to assess metals in non-human primates in Northeastern Brazil. ...
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... In addition, Ludwig et al. (2021) detected the 18S rDNA gene in brain and heart tissue from six brown howler monkey (Alouatta guariba clamitans) and identified the genus Sarcocystis (4/6) and Toxoplasma (2/6). Silva et al. (2018) isolated and genotypically characterized T. gondii from wild free-ranging or captive birds in the state of Pernambuco, Brazil, and described a non-virulent isolate of T. gondii in a free-living green-backed heron (Butorides striata). They also identified positive PCR samples for T. gondii in a spectacled owl (Pulsatrix perspicillata), an American kestrel (Falco sparverius), and a green-backed heron (B. ...
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... Due to the availability of many other microhabitats at the study site (Fonseca et al., 2017), our study shows a saxicolous habit for Gymnodactylus darwinii population from north-eastern Brazil, highly associated with rocky outcrops. Regarding terrestrial lizards, the use of rocky outcrops could be associated with many functions like good source of thermoregulation (Garda et al., 2013;Pelegrin et al., 2017), to escape and hide from possible predators, to obtain food items (Caruccio et al., 2010;Dias & Rocha, 2004) and to mate and lay eggs (Guedes et al., 2020;Oitaven et al., 2022). ...
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... Bacillus, as a sporeforming bacteria, has the soil as its primary reservoir and is widespread in water and air (Nicholson, 2002). As a consequence it is encountered also in the microbiota of animals (Jungle et al., 2005, Lima et al., 2012, Souza et al., 2012, meantime, its role as spontaneous nonhuman primate pathogen is unknown. ...
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... The tick species A. rotundatum is widely distributed across all regions of Brazil (Polo et al., 2021), with a higher frequency of reports in the North and Northeast regions. It has been observed parasitizing various species of reptiles and amphibians in these areas (Alcantara et al., 2018;Dantas-Torres et al., 2010a;Dantas-Torres et al., 2010b;Martins et al., 2020;Oda et al., 2018). In the southeastern region of Brazil, there have been relatively few descriptions of the hosts of A. rotundatum. ...
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