Banca de QUALIFICAÇÃO: SAFIRA NÚBIA DIAS DE MELO
Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.DISCENTE: SAFIRA NÚBIA DIAS DE MELO
DATA : 25/11/2024
LOCAL: VIDEOCONFERÊNCIA
TÍTULO:
BEHAVIORAL RESPONSES OF SEA TURTLES HATCHLINGS (Caretta caretta; Chelonia mydas; Eretmochelys imbricata, and Lepidochelys olivacea) TO ENVIRONMENTAL AND ANTHROPOGENIC STIMULI IN A SPAWING AREA IN PERNAMBUCO, NORTHEAST BRAZIL
PALAVRAS-CHAVES:
Light pollution. Sound pollution. Coastal areas. Orientation behavior. Activity budget.
PÁGINAS: 20
RESUMO:
Animals rely on environmental cues such as temperature, light, photoperiod, and sound to coordinate their activities. However, urbanization results in masking natural environmental cues, which can lead to changes in animal behaviors. Here, we aimed to experimentally investigate the behavioral responses of sea turtle hatchlings to light and noise stimuli after emergence from the nest. The target subjects were Caretta caretta, Chelonia mydas, Eretmochelys imbricata, and Lepidochelys olivacea hatchlings. We tested hatchlings from nests on five beaches along the coast of Ipojuca-PE, Northeastern Brazil. The hatchlings were exposed to eleven stimuli, which included a control stimulus, a light stimulus, sound stimuli, and combinations of light and sound stimuli. The animals' behaviors were filmed for later analysis. Eight behaviors were observed in hatchlings over the experimental trials. The “directional locomotion” behavior was the most common behavior in response to light-based trials and “random locomotion” usually in response to other stimuli. The species responded differently to the stimuli. However, not all stimuli led to significantly different behaviors compared to the control stimulus. Our study increased the current knowledge of the orientation behaviors of sea turtle hatchlings in response to simulated environmental and anthropogenic stimuli. The light stimulus had the greatest influence on the individuals, suggesting that artificial light reduction along the coast of Ipojuca-PE is urgently needed to avoid hatchlings going in the wrong direction after leaving the nest.
MEMBROS DA BANCA:
Presidente - 2088859 - BRUNA MARTINS BEZERRA
Externa à Instituição - EDNILZA MARANHAO DOS SANTOS - UFRPE
Interno - 2159921 - PEDRO MURILO SALES NUNES
Interno - 2068087 - WENDEL JOSE TELES PONTES