Trans-vestigiality hypothesis: Difference between revisions
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==Sexual mimicry in animals== | ==Sexual mimicry in animals== | ||
Dr Erica Todd from the University of Otago is a leading researcher in the Trans-vestigiality hypothesis in non-human animals. She calls male animals who take on female imagery to increase mating success as "sneaker males". She explains how "sneaker males" disguise themselves as females to avoid aggression from larger males, and steal mating opportunities.<ref>https://phys.org/news/2017-11-sneaky-males-female-like-brains-big.html</ref> Her work focused a lot on Bluehead Wrasse fish. She found that the "sneaker males" had genes for male sex hormones turned off making them appear feminine but also had much more sperm production and sperm quality control. The "sneaker males" had near identical brain gene expression to females and much different brain gene expression than non-sneaker-males. The "sneaker males" | Dr Erica Todd from the University of Otago is a leading researcher in the Trans-vestigiality hypothesis in non-human animals. She calls male animals who take on female imagery to increase mating success as "sneaker males". She explains how "sneaker males" disguise themselves as females to avoid aggression from larger males, and steal mating opportunities.<ref>https://phys.org/news/2017-11-sneaky-males-female-like-brains-big.html</ref> Her work focused a lot on Bluehead Wrasse fish. She found that the "sneaker males" had genes for male sex hormones turned off making them appear feminine but also had much more sperm production and sperm quality control. The "sneaker males" had near identical brain gene expression to females and much different brain gene expression than non-sneaker-males. The "sneaker males" often also changed roles to more masculine fish as they grew larger. | ||
==Phillipines== | ==Phillipines== | ||