plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
Spatial and Temporal Distribution of Larvae and Juveniles of the JapaneseMantis Shrimp Oratosquilla oratoria (De Haan, 1844) (Stomatopoda) inthe Southern Korean Waters
한송헌·김정년1·김현지2·김미향3·최정화4*
국립수산과학원 운영지원과, 1국립수산과학원 고래연구소, 2국립수산과학원 수산자원연구센터, 3해양수산자원연구소, 4국립부경대학교 해양수산
개발국제협력연구소
We investigated the spatial and temporal distribution of the Japanese mantis shrimp Oratosquilla oratoria larvae in southern Korean waters from February to November 2021. Larval samples were collected using bongo nets through the National Institute of Fisheries Science (NIFS) offshore fishery resource surveys. A total of 1,026 larvae were collected, at a total density of 3,442 inds./1,000 m3. The larval abundance showed a distinct seasonal pattern, peaking in August, followed by July and June. No larvae were observed in April or September. This absence in specific months is attributed to the two-peak spawning. Early stage larvae were concentrated around Jeju Island, indicating that this region is a primary spawning and nursery ground influenced by the Tsushima Warm Current. As development progressed to the late stage zoea and the juvenile phase, the distribution expanded northward toward the Korea Strait and Tsushima region. The O. oratoria larvae distribution is driven by advection-driven transport. This likely plays a critical role in determining the regional cryptic genetic lineages. These results provide insights into population connectivity and sustainable management of fishery resources in southern Korean waters.
Oratosquilla oratoria, Larvae and juvenile, Distribution, Southern Korean waters