Commemorative Palimpsests in Post-Authoritarian Argentina: The Case of ESMA

The authoritarian military regime in Argentina (1976-1983) left lasting impacts on the country’s social, political, and economic way of life. Characterized by thousands of violations of human rights, this period in history is still felt in Argentine society as activists and families search for truth. Simultaneously, other actors prefer to deny responsibility and argue for the need to move on, thus renouncing the legacy of state terror. ESMA, a notorious former clandestine torture center in Buenos Aires, became a site of memory on March 24, 2004, a date that also came to symbolize the anniversary of the coup d’état. Using the case study of ESMA, my research into how four Argentine presidential administrations since 1989 have commemorated the anniversary of the dictatorship on March 24 will investigate the following issues: 1) How did political leaders influence the cultural prominence of ESMA? 2) As a physical reminder of past conflict, how have commemorative events at ESMA generated new rounds of conflict in each presidential term? By answering these questions, this paper will contribute to the understanding of how the initiatives of different political administrations shaped and will continue to influence Argentina’s search for closure amidst the commemoration of the country’s past

Risk Assessment and the Effects of Refuge Availability on the Defensive Behaviors of the Southern Unstriped Scorpion (Vaejovis carolinianus)

Selection should favor individuals that acquire, process, and act on relevant environmental signals to avoid predation. Studies have found that scorpions control their use of venom: both when it is released and the total volume expelled. However, this research has not included how a scorpion’s awareness of environmental features influences these decisions. The current study tested 18 Vaejovis carolinianus scorpions (nine females and nine males) by placing them in circular arenas supplied with varying numbers (zero, two, or four) of square refuges and by tracking their movements overnight. The following morning, defensive behaviors were elicited by prodding scorpions on the chelae, prosoma, and metasoma once per second over 90 s. We recorded stings, venom use, chelae pinches, and flee duration. We found strong evidence that, across all behaviors measured, V. carolinianus perceived prods to the prosoma as more threatening than prods to the other locations. We found that stinging was a common behavior and became more dominant as the threat persisted. Though tenuous, we found evidence that scorpions’ defensive behaviors changed based on the number of refuges and that these differences may be sex specific. Our findings suggest that V. carolinianus can assess risk and features of the local environment and, therefore, alter their defensive strategies accordingly

Risk Assessment and the Effects of Refuge Availability on the Defensive Behaviors of the Southern Unstriped Scorpion (Vaejovis carolinianus)

Selection should favor individuals that acquire, process, and act on relevant environmental signals to avoid predation. Studies have found that scorpions control their use of venom: both when it is released and the total volume expelled. However, this research has not included how a scorpion’s awareness of environmental features influences these decisions. The current study tested 18 Vaejovis carolinianus scorpions (nine females and nine males) by placing them in circular arenas supplied with varying numbers (zero, two, or four) of square refuges and by tracking their movements overnight. The following morning, defensive behaviors were elicited by prodding scorpions on the chelae, prosoma, and metasoma once per second over 90 s. We recorded stings, venom use, chelae pinches, and flee duration. We found strong evidence that, across all behaviors measured, V. carolinianus perceived prods to the prosoma as more threatening than prods to the other locations. We found that stinging was a common behavior and became more dominant as the threat persisted. Though tenuous, we found evidence that scorpions’ defensive behaviors changed based on the number of refuges and that these differences may be sex specific. Our findings suggest that V. carolinianus can assess risk and features of the local environment and, therefore, alter their defensive strategies accordingly