Rare polyandry and common monogamy in the firefly squid, Watasenia scintillans oleh Noriyosi Sato, Sei-Ichiro Tsuda, Md. Nur E. Alam, Tomohiro Sasanami, Yoko Iwata, Satoshi Kusama, Osamu Inamura, Masa-aki Yoshida, Noritaka Hirohashi