August 26, 2022. Roberto Reyes Maldonado successfully defended his Ph.D. thesis: "Using a native insect species and its neuromuscular system as models for assessing benthic sediment toxicity in Puerto Rico: Chironomus sp. "Florida" (Diptera: Chironomidae)". Congratulations to Dr. Reyes Maldonado and his mentors Dr. Bruno Marie and Dr. Alonso Ramírez.