Species Composition and Monthly Variation of Aquatic Animals Collected in the Coastal Waters off Yeonpyeong-do, Korea

PARK, Jun; LEE, Hyung-Bin; HAN, Song-Hun; KIM, Maeng-Jin

doi:10.13000/jfmse.2022.6.34.3.471

Cited by 1 publication

(2 citation statements)

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“…Generally, the occurrence of larval fish shows distinct seasonality, corresponding to the reproductive seasons of adult fish, because most fish species have a distinct seasonal spawning period that aligns with the seasonal patterns of gonadal maturation and water temperature [55]. In the coastal areas of southeastern Korea, the spawning seasons of coastal fish assemblages are primarily divided into warmer (late spring to summer) and colder (winter and early spring) seasons based on their gonadosomatic indices [56]. Among the dominant larval fishes in the Nakdong River estuary, spring-summer spawners, such as E. japonicua and K. punctatus, were more prevalent during the warm season, whereas winter spawners (e.g., C. pallasii and P. yokohamae) were abundant during the cold season [56].…”

Section: Structure Of Larval Fish Assemblagementioning

confidence: 99%

“…In the coastal areas of southeastern Korea, the spawning seasons of coastal fish assemblages are primarily divided into warmer (late spring to summer) and colder (winter and early spring) seasons based on their gonadosomatic indices [56]. Among the dominant larval fishes in the Nakdong River estuary, spring-summer spawners, such as E. japonicua and K. punctatus, were more prevalent during the warm season, whereas winter spawners (e.g., C. pallasii and P. yokohamae) were abundant during the cold season [56]. Several previous studies have also shown that the seasonal variation in larval fish assemblages is influenced by the timing of the spawning activities of adult fish [57][58][59], and water temperature is regarded as a key environmental variable influencing such seasonal changes in larval fish communities [5].…”

Section: Structure Of Larval Fish Assemblagementioning

confidence: 99%

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Spatio-Temporal Dynamics of Larval Fish Assemblage in the Nakdong River Estuary, South Korea

Choi,

Youn,

Kim

et al. 2024

Diversity

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Estuaries are crucial fish nursery habitats owing to their high productivity and the presence of various microhabitats for the early development of aquatic organisms. This study investigated the temporal and spatial patterns of the species composition and abundance of larval fish assemblages in the Nakdong River estuary, South Korea, through bi-monthly sampling in the inner and outer estuaries. Fifty-five larval taxa were collected, and the larval fish assemblages were dominated by a few species. Engraulis japonicus (28.8%) was the most abundant, followed by Gobiidae sp.1 (22.6%), Clupea pallasii (13.9%), and Omobranchus sp. (6.1%). The species richness, abundance, and diversity tended to be higher during the warm season in the inner estuary. Multivariate analyses revealed that the structures of larval fish assemblages were significantly influenced by the season and site. Spatial and seasonal changes in larval fish assemblages resulted from the different occurrence patterns of common fish larvae in relation to water temperature and salinity. Among the predominant fish larvae, E. japonicus was captured more frequently in more saline outer estuaries during the warm season, whereas Gobiidae sp.1 and C. pallasii were more abundant in less saline inner estuaries during the warm and cold seasons, respectively. The results of this study improve our understanding of larval biodiversity in estuarine habitats in relation to environmental modification and contribute to the evaluation of nursery functions in the Nakdong River estuary.

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Section: Structure Of Larval Fish Assemblagementioning

confidence: 99%