Dr. Lauren Esposito, a scorpion expert, reveals how venom works, scorpion myths, their glow effect, and their maternal instincts. She also discusses scorpion anatomy, the cost of venom, the visibility campaign 500 Queer Scientists, and the ancient size of scorpions. An entertaining and educational exploration of these fascinating creatures.
Read more
AI Summary
AI Chapters
Episode notes
auto_awesome
Podcast summary created with Snipd AI
Quick takeaways
Female scorpions store sperm until insemination, exhibit viviparity, and give live birth to multiple offspring.
Scorpion venom contains neurotoxins, the fluorescence under UV light is from a pigment called cormorant, serving various purposes.
Scorpions are sensitive to environmental changes, serving as ecosystem health indicators, and require protection to fill knowledge gaps for conservation.
Deep dives
Scorpion Courtship and Reproduction
Scorpions engage in intricate courtship dances involving hand-holding and chelate oral massage. Males deposit sperm packets for females to pick up with their genital openings. Females store sperm in a complex uterus structure until insemination is desired. They exhibit viviparity, giving live birth to multiple babies at a time, which climb onto their mother's back post-birth.
Scorpion Venom and Fluorescence
Scorpion venom is a complex cocktail containing neurotoxins and enzymes that disable prey and deter predators. The fluorescence of scorpions under UV light is due to a pigment called cormorant in their exoskeleton. Various theories suggest the fluorescence serves as a warning signal, a means of detecting light, or a mimicry tactic for food attraction.
Scorpion Environmental Sensitivity and Research
Scorpions are sensitive to environmental disturbances and act as indicators of ecosystem health. As most species lack basic natural history information, research involving collecting and studying scorpions aims to fill knowledge gaps for conservation purposes. Despite the need for euthanization in research, efforts focus on understanding and protecting these environmentally significant creatures.
Owning Scorpions as Pets
Owning scorpions as pets is considered acceptable, but it is crucial to only keep captive bred scorpions to prevent negatively impacting natural ecosystems. The speaker emphasizes the importance of avoiding harvesting wild scorpions for the pet trade. It is advised to purchase scorpions from breeders rather than capturing them from the wild to help maintain ecological balance and prevent overcollection.
Scorpion Venom and Poison Distinction
All scorpions are venomous, not poisonous, as venom is injected into targets, while poison must be ingested. The podcast highlights that scorpions' venom is generally not harmful to humans unless they possess mammal neurotoxins. The speaker clarifies that consuming scorpion venom would not be harmful due to stomach acid denaturing it, though it is discouraged. Scorpion sting effects may range from a mild wasp-like pain to resembling an electric shock.
Scorpions: the victims of undue shade. If you've ever wanted to impress a date with weird facts THIS IS THE EPISODE FOR YOU. A handful of people on planet Earth have a PhD in scorpions and Dr. Lauren Esposito is one of them. She spills the beans on how venom works, what's up with the blacklight glow effect, how dangerous they *really* are, what all the movies get wrong, the best names for scorpions, where she's traveled to look under rocks, where a scorpion's butt is, if scorpions dance or make out (SPOILER: YES), what good mothers they are, how big they used to be millions of years ago and how -- technically speaking -- they are not poisonous. Also: how much does a gallon of venom cost? Oh, and why she started the visibility campaign 500 Queer Scientists. Get this one in your ears right away.