SEM Photo

Nov 15, 2018

1 min read

Beanweevils Photo SEM

Beanweevils Photo S e m

SEM Photo of Bean weevils

Males of Callasobruchus maculatus have exaggerated spins on genitalias. These spins often hurt their mates.
They have been treated as model organisms of sexual conflict by these harmful spins.

The two photos belows show male genitalias of two geographic strains, implying that the intensity of sexual conflict (and also sexual selection) varied depending on strains. SEM_Photo_genitalia_of_icQ

SEM_Photo_genitalia_of_icQ

Photo by Wataru Mukaimine.

I could take these photos with the help of Mr. Takayuki Yamamoto and Dr. Ryuichiro Machida.