Ichthyology podcasts

Nature reporters discuss evidence for a distant Jupiter-mass exosatellite and the discovery of a rare transmissible cancer in wild catfish.

David Reznick discusses field research on Trinidadian guppies and the evidence it provides for rapid evolutionary changes in life histories. The episode explores feedback between ecological conditions and evolution, then considers the emergence of placentas in live-bearing fishes and what comparative research can reveal about that transition.

Hosted by Marty Martin, Cameron Ghalambor

Alison Derry and Andrew Hendry discuss experiments on rapid evolution in threespine sticklebacks reintroduced to Alaskan lakes. Topics include differences between stickleback ecotypes, consequences for zooplankton evolution, and feedbacks between fish and food webs. The conversation was recorded before a live audience in Soldotna, Alaska.

Hosted by Marty Martin, Art Woods

Simen Sætre and Kjetil Østli discuss salmon farming and the environmental and animal-health questions surrounding the industry. Conversation in Norwegian.