Three new species of (Annelida, Capitellidae) from Korean waters, with genetic evidence based on two gene markers.

Three undescribed species of Eisig, 1887 were collected from intertidal to sublittoral habitats in western and southern waters of Korea. sp. nov.

A new (Annelida, Capitellidae) species from Korean waters, with genetic comparison based on three gene markers.

, collected from the sublittoral muddy bottom of Korean waters, is described as a new species. The Korean new species closely resembles Hutchings & Rainer, 1979 in the chaetal arrangement and the details of abdominal segments, but differs in the position of genital pores and the absence of eyes. DNA sequences (mtCOI, 16S rRNA, and histone H3) of the new species were compared with all the available sequences of species in the GenBank database.

A new species of from the Korean subtidal waters with notes on the taxonomic status of the genus (Annelida, Capitellidae).

, collected from the sublittoral muddy bottom in southern Korea, is described as a new species. The taxonomic status of the monospecific genus has been a subject of controversy for many years, as its characteristics overlap those given in recent generic definitions of . The results of a comprehensive review and comparison regarding the two genera, based on previous records showed minor differences.

Two new species of the deep-sea genus Parameiropsis (Copepoda: Harpacticoida) from the eastern central Pacific.

Two new species of Parameiropsis are herein described that were identified from the Korean Deep Ocean Study (KODOS) in the Clarion-Clipperton Fracture Zone, located in the eastern central Pacific. Parameiropsis kodosensis n. sp.

Description of two new species of Neotanais Beddard, 1886 (Crustacea, Tanaidacea) from KODOS area.

Two new species of Neotanais Beddard, 1886 are described from the Korea Deep Ocean Study (KODOS) area in the Clarion-Clipperton Fracture Zone, based on the collections performed on board R/V Onnuri from a depth of 5180 m. Neotanais triqueturus n. sp.

Morphological and genetic differentiation of heteromorphy in Labidocera rotunda (Copepoda, Calanoida, Pontellidae).

The pontellid calanoid Labidocera rotunda Mori, 1929 is relatively widespread in the inshore surface waters of East Asia. In this study, some heteromorphic specimens have been observed with extreme morphological discrepancies in the female, including the genital double-somite, the second urosomite, the caudal rami, and the fifth leg. To evaluate the validity of species assignment of the morphological variants, we analyzed the DNA sequences of two mitochondrial genes, 16S rRNA and cytochrome oxidase subunit I (mtCOI).

Long Photoperiod Affects Gonadal Development in Olive Flounder Paralichthys olivaceus.

To effects of sex maturation in olive flounder by regulating long photoperiod, gonadal development and GTH mRNA expression in the pituitary were investigated. Photoperiod was treated natural photoperiod and long photoperiod (15L:9D) conditions from September 2011 to March 2012. The results showed that natural photoperiodic group showed a higher gonadosomatic index (GSI) than long photoperiodic group during the spawning season (March 2012).

Genetic identification and molecular phylogeny of Pseudodiaptomus species (Calanoida, Pseudodiaptomidae) in Korean waters.

Five species of the genus Pseudodiaptomus, P. inopinus, P. poplesia, P.