A5089288861- Animal Behavior and Welfare Studies
- Wildlife Ecology and Conservation
- Human-Animal Interaction Studies
- Veterinary Medicine and Surgery
- Sperm and Testicular Function
- Primate Behavior and Ecology
- Mosquito-borne diseases and control
- Reproductive Physiology in Livestock
- Neuroendocrine regulation and behavior
- Insect symbiosis and bacterial influences
- Animal Nutrition and Physiology
- Stress Responses and Cortisol
- Animal Behavior and Reproduction
- Thyroid Disorders and Treatments
- Animal Ecology and Behavior Studies
- Insect Utilization and Effects
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Reproductive Biology and Fertility
- Evolution and Paleontology Studies
- Conservation, Biodiversity, and Resource Management
- Sexual Differentiation and Disorders
- Viral Infections and Vectors
- Hormonal and reproductive studies
- Effects of Environmental Stressors on Livestock
- Regulation of Appetite and Obesity
Universidade Federal do Paraná
2014-2023
Conservation Biology Institute
2022-2023
Smithsonian Conservation Biology Institute
2019-2023
National Zoological Park
2022-2023
Smithsonian Institution
2019
Pontifícia Universidade Católica do Paraná
2014
Itaipu Binacional
2001-2009
Universidade Federal de Pelotas
1998
Universidade Estadual Paulista (Unesp)
1985
Building bridges between environmental and political agendas is essential nowadays in face of the increasing human pressure on natural environments, including wetlands. Wetlands provide critical ecosystem services for humanity can generate a considerable direct or indirect income to local communities. To meet many sustainable development goals, we need move our trajectory from current destructive wiser wetland use. The article contain proposed agenda Pantanal aiming improvement public policy...
Abstract Reproductive endocrine patterns were characterized in female ocelots ( Leopardus pardalis ; n = 3), tigrinas tigrinus 2), and margays wiedii 2) housed captivity southern Brazil. Females maintained as singletons exposed to natural fluctuations photoperiod. Cyclic changes ovarian steroids monitored by analyzing estrogen progestogen metabolites fecal samples collected five times weekly for 14 18 months. Based on intervals between peaks, mean (± SEM) duration of the estrous cycle was...
The objective of this study was to evaluate the effects different captive housing conditions on reproductive cyclicity and adrenocortical activity in adult females two small-sized felid species, tigrina (Leopardus tigrinus; n = 3) margay wiedii; 2). Females were housed as singletons subjected three enclosure over successive time periods: Phase I-large, enriched enclosures for 3 months; II-small, empty 5.5 III-the same small with branches nest boxes 6.5 months. Fecal samples collected five...
No Brasil, os arbovírus são uma causa de preocupação para a saúde pública, com impactos clínicos, econômicos e sociais, seu controle representa um grande desafio. As principais arboviroses que acometem não só o Maranhão, mas Dengue, Zika Chikungunya, as três possuem mesmo vetor transmissão (Aedes Aegypti), quadro clínico semelhante, sendo difícil diferenciá-las. Para desfecho favorável dessas doenças, diagnóstico tratamento precoce imprescindíveis. O objetivo desse trabalho é conhecer perfil...
Hyperthyroidism (Hy) exerts a broad range of influences on variety physiological parameters. Its disruptive effect cardiovascular system is one its most remarkable impacts. Moreover, Hy has been clinically associated with stress - induced hyperactivation the hypothalamic-pituitary-adrenal axis.Evaluate impact short-term cardiac performance and adrenal activity rats.Induction in Wistar rats through injections T3 (150 µg/kg) for 10 days (hyperthyroid group HG) or vehicle (control group). The...
Aim: To develop a monoclonal antibody against dehydroepiandrosterone (DHEA) and miniaturize it, generating single-chain variable fragment (scFv) DHEA as an adrenocortical carcinoma (ACC) marker. Material & methods: conjugated to keyhole limpet hemocyanin was used immunogen obtain anti-DHEA hybridomas. Variable fragments were cloned from hybridoma 5B7 total RNA, detect in normal adrenal tissue ACC cells. Results: IgM highly specific, the recombinant scFv preserved parental characteristics,...
Abstract Spatial neophobia and exploration are often assessed in nonhuman animals by measuring behavioral responses to novel environments. These traits may especially affect the performance of individuals translocated environments for conservation purposes. Here, we present methods administer analyze a minimally invasive environment test that accounts social context focal individuals. We used an aerial platform capture video footage captive herd scimitar-horned oryx ( Oryx dammah ) entering...
Heart rate biologging has been successfully used to study wildlife responses natural and human-caused stressors (e.g., hunting, landscape of fear). Although rarely deployed inform conservation, heart may be particularly valuable for assessing success in reintroductions. We conducted a case testing validating the use subcutaneous monitors eight captive scimitar-horned oryx ( Oryx dammah ), once-extinct species that is currently being restored wild. evaluated biologger safety accuracy while...
Abstract Anthropogenic change is a major threat to individual species and biodiversity. Yet the behavioral physiological responses of animals these changes remain understudied. This due technological challenges in assessing effects situ. Using captive maned wolves (Chrysocyon brachyurus, n = 6) as model, we deployed implantable biologgers collected data on heart rate (HR) variability (HRV) over 1-year period. To test for links between HR environment analysed daily rhythms potential stressors...
The febrile response of newborn pigs to exogenous pyrogen injection was investigated. Lipopolysacharides (LPS, <i>E. coli</i>) were injected intravenously into the superior vena cava 1–30-day-old piglets. All experiments carried out in littermates half which with and pyrogen-free saline. Newborn did not develop a from 1 4 days age; however, when animals 5 old determined typical monophasic response. A second intravenous (1 day old) 24 h after first raise body temperature. It is...
O objetivo desta pesquisa foi obter melhor compreensão da fisiologia reprodutiva dos pequenos felídeos neotropicais, necessária para um desempenho reprodutivo mais consistente em cativeiro e aumentar o número de indivíduos que se reproduzem na população cativa. Foram realizadas três séries exames reprodutivos (n=32) 11 gatos-do-mato-pequeno (Leopardus tigrinus), mantidos no Criadouro Animais Silvestres Itaipu Binacional, Foz do Iguaçu PR. Os animais estavam alojados recintos ambientados...
The effects of systemic insulin administration at different concentrations on the testicular tissue diabetic adult rats, induced by streptozotocin, are evaluated morphological analysis spermatogenic process. Twenty-four male rats were divided into 1) Control Group: they received citrate buffer, intraperitoneal injection; 2) Diabetic injection streptozotocin (60 mg. kg-1 body weight); 3) Insulin 50%: diabetes treated with half standard dosage insulin; 4) 100%: dose insulin. After eight weeks,...
Abstract Aim This study aims to investigate the possible association between digit ratio (2D:4D) and match‐play success (MPS) in junior tennis players. In addition, we consider explanatory pathways of these associations relation psychological, strength, power, hormonal parameters. Methods We performed a cross‐sectional study, with sample comprised 64 male players (11–18 years old). Digit was calculated from direct finger measurements. measured wins by number matches played 5 official...
RESUMO O objetivo deste trabalho foi identificar as espécies de carrapatos coletadas animais silvestres na região Foz do Iguaçu no Brasil e Argentina. Relata-se a presença Amblyomma ovale em Panthera onca, Felis parda/is Galictis cuja Brasil; A Argentina; A. tigrinum Boophilus microplus Blastocerus dichotomus. Estes dados caracterizam primeira citação parda/is, cativeiro; da associação cooperi, triste cajennense Hydrochoerus hydrochaeris, bem como notificação ocorrência Estado Paraná.