Dorhkas Ramos

My project helps our understanding of how temperature fluctuations influence stability in early developmental stages of tunicates, providing insights into their adaptability and persistence in changing environments. Looking at the flexibility of early development, reproductive timing and success, my project will help understand how tunicates may respond to climate change. Finally, my research will contribute to ecological and evolutionary discussion on developmental plasticity in local tunicates, an area that remains largely understudied.”

My research focuses on the early development of invasive tunicates, particularly how temperature variations impact fertilization, cleavage timing, and overall success in Ascidia sp., I have observed that embryos exposed to higher temperatures initially develop more quickly but later exhibit a lack of normal development processes. At 20°C, there is increased variation in developmental stages and the presence of deformations, which are not observed at 10°C or 14°C. While development at 10°C is delayed, embryos do not show any noticeable deformities. These findings suggest that environmental temperature plays a crucial role in regulating early developmental success, potentially influencing the establishment and spread of tunicates. Given the physiological and molecular challenges posed by high temperatures understanding these effects is critical for predicting how these species may respond to climate change. By studying the temperature sensitivity of gamete function and development, my work contributes to broader efforts in assessing the resilience and ecological impact of invasive marine invertebrates.