Condição corpórea e hormônios de estresse como indicadores do status fisiológicos de três espécies de morcegos em resposta à fragmentação

• Ano de defesa: 2013
• Autor(a) principal: Galbiati, Lígia Amoroso [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Bats; Morcego; Stress (Fisiologia); Hormonios; Paisagens fragmentadas; Hidrocortisona; Fisiologia
• Link de acesso: http://hdl.handle.net/11449/108743

The fragmentation and habitat loss led to a decrease in quantity or variety of food and living area, leaving populations morev ulnerable to environmental effects. Chiroptera is one of the most successful order among mammals and actively participates in ecological processes. However may respond negatively to fragmentation, and this effect can vary interspecific. Thus, assess the magnitude of the impacts of fragmentation on bat populations can be useful in order to detect the sensitivity of species to this disorder, making proposals for preventive measures and management. Among the various tools that can be used to determine the mechanisms underlying the differential effects of human disturbance, those who make use of methods and concepts of physiology are considered as highly promising, and any physiological parameter that indexes the state of health of an organism and which can be measured under various conditions has the potential to be used to determine whether the animal is experiencing stress situation. One of the main protocols to determine the stress response in vertebrates is to compare the concentration of baseline levels of glucocorticoid hormones and hormonal response to a stimulus inducing stress. In addition, the determination of indexes of body condition can help detect effects of environmental impacts because they indicate the physiological status of individuals related to nutrition, fat accumulation, muscle and skeletal structure, and are potentially related to evolutionary fitness. The main objective of this project was to analyze the responses of species Artibeus lituratus, Carollia perspicillata and Sturnira lillium to the effects of fragmentation of the Mata Atlântica through the quantification and comparison of the profile of glucocorticoid hormones and body condition. Besides differences in body size, these species differ in the use of the landscape, which may reflect a differential sensitivity to the effects of...