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Age and growth of the robust tonguefish Cynoglossus robustus in the Seto Inland Sea, Japan
박주면,Hiroaki Hashimoto,정재묵,김현지,백근욱 한국통합생물학회 2013 Animal cells and systems Vol.17 No.4
This study provides data on the age and growth of the robust tonguefish, Cynoglossus robustus in the western part ofthe Hiuchi-Nada Sea in the Seto Inland Sea, Japan. Fish samples consisting of 299 robust tonguefish were collectedmonthly from June 2000 to May 2001. Maximum total length (TL) was larger for females than males. Growth wasmodeled using age estimates obtained from sagittal otoliths. The length-weight relationship followed an allometricgrowth pattern (b ≠3.0). Estimated ages ranged from 0.5 to 5.5 years for females and from 0.5 to 3.5 years for males. Von Bertalanffy growth equation parameters were derived from back-calculated TL fitted to TL at age; estimated values for females, were L∞=46.0 cm, k=0.278 year‑¹, and to=-1.033 years, and values for males, were L∞=43.4 cm, k0.281 year‑¹, and to=-1.171. The growth performance index values for females and males were Ф=2.77 and Ф=2.72, respectively.
박주면,노현수,이희갑,명세훈,Laith A. Jawad,이재호,최창근 한국어류학회 2023 韓國魚類學會誌 Vol.35 No.1
This study is the first to report the biometric information between the length and weight relationships (LWR) and seasonal body condition factors (K) of Sebastes zonatus Chen & Barsukov, 1976 and Thamnaconus modestus (Günther, 1877) inhabiting the waters off Ulleung-do and Dokdo. The LWRs in spring and summer, and all seasons combined were highly correlated (r2>0.959), and the regression slopes of LWRs were significantly different between the spring and summer in both species. The body conditions of the two fish were significantly higher during the spring than during the summer, reflecting their fatness in relation to spawning. The results from this study contribute to the understanding of the biology of S. zonatus and T. modestus and provide useful data for the development of conservation and management plans for these species.
박주면,허성회 한국어류학회 2017 韓國魚類學會誌 Vol.29 No.4
Diel changes in feeding activity of juvenile Pacific herring, Clupea pallasii were investigated throughout the analysis of stomach contents of 301 fishes collected from the southeastern coast of Korea. Fish samples were collected every 3 hour over a 24 h period in summer using small bottom trawl. The ratio of empty stomach, stomach fullness, stomach contents index (SCI) and stomach fullness index (IF) of juvenile C. pallasii were varied markedly with day/night changes. The ratio of empty stomach tended be higher during nighttime, while the other values were higher at daytime, with showing peak before sunset. During daytime, the stomach contents mainly were made up of copepods and euphausiids, while the diets at midnight were composed of nearly digested and unidentifiable items.
동해 연안에 출현하는 고무꺽정이(Dasycottus setiger)의 섭식생태
박주면,정해근,김범식,정용우,이충일 한국수산과학회 2022 한국수산과학회지 Vol.55 No.3
In this study, the dietary habits of the spinyhead sculpin Dasycottus setiger were investigated based on 156 specimens collected seasonally between May 2018 and February 2019 from the East Sea off the Korean coast. In terms of the weight contribution (%W), the main food items of the spinyhead sculpin were found to be teleosts (33.5%), followed by carid shrimps (13.8%), amphipods (13.3%), cephalopods (12.0%), and polychaetes (7.1%). Dietary analyses based on the weight contribution of different prey taxa in the diet of the spinyhead sculpin revealed considerable variation in the dietary composition in terms of the sampling region and fish size implying intra-specific dietary segregation. The spinyhead sculpin showed a size-related trends in dietary shift from amphipods to carid shrimps and teleosts in northern region, and from carid shrimps and mysids to teleosts and cephalopods in middle eastern coast. Multivariate analyses of dietary changes revealed that the dietary composition of spinyhead sculpin is significantly associated with the sampling site, but not the fish size. Amphipods contributed more to the diets of the northern population, while mysids typified the diets of spinyhead scuplin inhabiting the middle eastern coast, indicating differences in available food resources between the two study regions.
박주면,곽석남,한인성 한국해양과학기술원 2018 Ocean science journal Vol.53 No.1
We conducted dietary analyses of six seagrass-associated fish species inhabiting northeastern Gwangyang Bay, Korea. These six species consumed a variety of benthic invertebrates and teleosts, but their preferences for different food resources varied. Although all species consumed crustaceans, the contributions of different crustacean taxa differed among the species’ diets. Caridean shrimps and crabs were a significant part of the Hexagrammos agrammus and H. otakii diets, respectively, while amphipods were consumed mainly by Sebastes inermis. Caridean shrimps and prawns were abundant within the Lateolabrax japonicas diet, but were not common prey resources for Pseudopleuronectes yokohamae or S. schlegelii. Polychaetes and ophiurids were ingested by P. yokohamae, and the former prey taxon also made moderate contributions to the diets of H. agrammus and L. japonicus. With the exception of P. yokohamae, the diets of all species included teleosts. Teleosts contributed the largest proportion of the S. schlegelii diet, followed by the S. inermis and L. japonicas diets; however, H. agrammus and H. otakii rarely consumed teleosts. Non-metric multidimensional scaling (nMDS) ordination plots and permutational analysis of variance (PERMANOVA) revealed the variation in dietary composition among species and the contributions of each prey taxon. These interspecific differences in diet increase the range of food resources available to these fishes, thereby reducing competition for resources within the fish community in this region.
박주면,정해근,이충일,허성회 한국해양과학기술원 2019 Ocean science journal Vol.54 No.1
Diel and gastrointestinal changes in relation to the feeding intensity and prey composition of Apogon lineatus were investigated through the analysis of the diet contents of 174 fishes collected from the southeastern coast of Korea. Fish samples were collected at both day and night times during winter using a small bottom trawl. Stomach fullness, stomach contents index (SCI) and intestine contents index (ICI) of A. lineatus varied with day-night changes. Multivariate analyses revealed that dietary contents differed significantly between the stomach and intestine, but were similar between day and night in both stomachs and intestines. In the stomachs, prey items mostly consisted of caridean shrimps and euphausiids, while the relative contributions of amphipods and unidentifiable items tended to be high in the intestine contents, indicating that the intestines mainly contained content made up of nearly digested and/or hard shell items.
Epibenthic invertebrate fauna in the southern coast of the East Sea, Korea
박주면,허성회 국립중앙과학관 2018 Journal of Asia-Pacific Biodiversity Vol.11 No.2
This study surveyed epibenthic invertebrate fauna in the southern coast of the East Sea, Korea. Benthic invertebrate samples were collected seasonally between 2005 and 2008 using a demersal trawl. In total, 76 invertebrate species belonging to six phyla (Cnidaria, Sipuncula, Mollusca, Annelida, Arthropoda, and Echinodermata) were collected for the study, with four species being added to the International Union for Conservation of Nature Red List of Threatened Species. The number of species, abundance, species diversity, richness, and evenness varied with season. The peaks in the species number and abundance were recorded in spring and summer, whereas the catch rates were relatively low in autumn and winter. Species diversity, richness, and evenness tended to be low in summer than other seasons.