Sex of Mussel Mytilus coruscus (Bivalvia: Mytilidae) : Sequential Hermaphroditism

Hyeon Jin Kim; So Ryung Shin; Han Young Oh; Jae Won Kim; Jung Sick Lee

doi:10.12717/DR.2021.25.1.55

Sex of Mussel Mytilus coruscus (Bivalvia: Mytilidae) : Sequential Hermaphroditism

Dev Reprod. 2021 Mar;25(1):55-58. doi: 10.12717/DR.2021.25.1.55. Epub 2021 Mar 31.

Authors

Hyeon Jin Kim¹, So Ryung Shin¹, Han Young Oh¹, Jae Won Kim², Jung Sick Lee¹

Affiliations

¹ Dept. of Aqualife Medicine, Chonnam National University, Yeosu 59626, Korea.
² Dept. of Aquaculture, Gangwon State University, Gangneung 24525, Korea.

Abstract

Samples were collected from the subtidal region of Jumunjin on the eastern coast of Korea in July 2020. A total of 338 mussels of shell height (SH) 20.8-149.8 mm were used for sex ratio analysis. The sex ratio (F:M) in the same population of mussel Mytilus coruscus was approximately 1:0.7. The sex ratio according to the class of SH was different. The sex reversal pattern of M. coruscus appears to go from male → female → male → female, and as such is determined to be sequential hermaphrodites.

Keywords: Mytilus coruscus; Sequential hermaphroditism; Sex reversal.