On the Species Identification of Two Non-Native Tilapia Species, Including the First Record of a Feral Population of (Steindachner, 1864) in South Korea.

Tilapia is an invasive species that has become widely distributed around the world. In Korea, introduced tilapia into its aquatic ecosystem for the first time with a species from Thailand in 1955, and later additionally introduced two more species from Japan and Taiwan, thus securing a total of three species of tilapia (, and ) as food resources. Since then, has been reported to inhabit certain streams with thermal effluent outlets.

Complete mitochondrial genome of Asahina, 1964 (Odonata: Macromiidae).

We describe the first time sequencing and assembly of the complete mitochondrial genome of Asahina, 1964 (Odonata; Macromiidae; Macromia). The mitochondrial genome of was found to be 15,560 bp. It contains thirteen protein-coding genes (PCGs), 22 transfer RNAs (tRNAs), two ribosomal RNAs (rRNAs), and AT-rich region.

Low genetic diversity, local-scale structure, and distinct genetic integrity of Korean chum salmon () at the species range margin suggest a priority for conservation efforts.

Chum salmon () is an ecologically and economically important species widely distributed across the North Pacific Ocean. However, the population size of this fishery resource has declined globally. Identifying genetic integrity, diversity and structure, and phylogenetic relationships of wild populations of over an entire species' range is central for developing its effective conservation and management plans.

Complete mitochondrial genome of large dragonfly ().

The complete mitochondrial genome of (Odonata; Macromiidae; Macromia) was sequenced and found to be 15,594 bp in length including 37 genes (thirteen protein-coding genes (PCGs), 22 transfer RNAs (tRNAs) and two ribosomal RNAs (rRNAs) and a non-coding region). The overall GC content of the mitochondrial genome for was 28.4%.

Contrasting life histories contribute to divergent patterns of genetic diversity and population connectivity in freshwater sculpin fishes.

Background: Life history characteristics are considered important factors influencing the evolutionary processes of natural populations, including the patterns of population genetic structure of a species. The sister species Cottus hangiongensis and C. koreanus are small bottom-dwelling freshwater sculpin fishes from South Korea that display marked life history divergence but are morphologically nearly indistinguishable.