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Right, also if glowing is in fact detrimental to the fitness of these native fish it will not spread in the population, even if it gets introduced. That would b
by _0ffh 5y ago
Right, also if glowing is in fact detrimental to the fitness of these native fish it will not spread in the population, even if it gets introduced. That would be diametrically opposed to how evolution works.
- heavyset_go 5y agoI can imagine a scenario where a glowing trait results in higher rates of reproduction because of sexual selection, resulting in large populations with the trait, even if the trait might increase mortality rates. Especially so if selection against the trait stems from something like learned behavior of predators. Evolution doesn't mean that "bad" genes can't spread.
- MengerSponge 5y agohttps://www.pnas.org/content/102/21/7618 https://www.pnas.org/content/102/21/7618 Thank you for reminding me of my favorite evo bio article of all time. In this particular species, females preferentially mate with the largest penis they can find, which applies strong selective pressure to hang dong. Unfortunately they're fish, so it's harder to swim if they're packing heat, making them more likely to get eaten by predators.