Shigeho Ijiri

The study shows that cAMP responsiveness, not LHR abundance, determines ovulatory fate in cloudy catshark follicles, challenging the LHR-threshold model.

This study examines how parasitism affects sex allocation in hermaphroditic barnacles, finding that parasite infestation reduces reproductive investment and shifts sex allocation towards males in heavily infested hosts.

This study establishes in vitro and in vivo gene introduction methods in cloudy catshark embryos and adult testis using electroporation and baculovirus, enabling genetic manipulation in cartilaginous fishes.