Why Do Male Antechinus Die After Mating? Male antechinus die after mating because an extreme, weeks-long breeding frenzy triggers a massive surge in stress hormones that collapses their immune system and causes organ failure. This synchronized, one-off reproductive strategy, called semelparity, means males invest all energy into a single mating season and then die before offspring are weaned. The immediate cause is chronically elevated corticosteroids during the brief breeding window.

Nature’s extreme: male antechinus mate in a frantic marathon, then crash from hormone overload. How does this strategy help the species—and what is semelparity anyway? Dive in. #Antechinus #Australia #Marsupial #Reproduction #Semelparity

Scientists Figure Out Why Female Octopuses Self-Destruct After Laying Eggs A new study finds several biochemical pathways, including one that produces a precursor to cholesterol, may be key to this behavior

Female octopuses stop eating—and self-destruct—after laying eggs 😱

This #ResearchSpotlight uncovers the biochemical pathways behind this extreme form of #Semelparity in #Octopus biology. #Cephalopods #Evolution #Biochemistry #Biodiversity #OceanConservation #WildlifeBiology

Scientists Figure Out Why Female Octopuses Self-Destruct After Laying Eggs A new study finds several biochemical pathways, including one that produces a precursor to cholesterol, may be key to this behavior

Female octopuses stop eating—and self-destruct—after laying eggs! 😱

Study uncovers the biochemical pathways behind this extreme form of #Semelparity in #Octopus biology. www.smithsonianmag.com/smart-news/s...

Pacific salmon spawn once, giving it all, then die. They are semelparous-reproduce one in their life time. At the end, they don't look very appetizing. #salmon #pacificsalmon #spawning #foodie #semelparity
youtube.com/shorts/RCtNC...