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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,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.
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.
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,허성회,백근욱 한국통합생물학회 2015 Animal cells and systems Vol.19 No.5
To assess temporal variations in fish assemblages, fish samples were collected on a monthly basis in the surf zone of the Nakdong River Estuary in 2004. Surveys were conducted at two sites during day and night neap tides using a 10-m beach seine. In total, 2397 specimens (8146.0 g) comprising 27 species and 16 families were collected during the study period. The dominant fish species were Mugil cephalus, Plecoglossus altivelis, Favonigobius gymnauchen, Opsariichthys uncirostris amurensis, and Hyporhamphus sajori, which accounted for 84.6% of the total number of individuals. The fish sampled were primarily small species or the early juveniles of larger species. The species composition and abundance varied greatly, with a peak in the number of individuals in July (summer) and January (winter), and the peak in biomass during July (summer). The catch rate was low in the spring and autumn months due to the low abundance of the dominant species recorded. A cluster analysis revealed that the fish assemblages were characterized by distinct seasonal groups reflecting the reproductive habits of adult fishes. Fish abundance did not significantly differ between the two sites, although a significant difference in their abundance was detected between day and night, with more fish specimens collected at night than during the day at both sites. The Nakdong River Estuary is an important ecosystem for small and/ or juvenile fishes, providing a habitat within the estuary suitable for their development and migration.
박주면,Ha Won Kim,Seok Nam Kwak,Ralf Riedel 한국해양과학기술원 2021 Ocean and Polar Research Vol.43 No.2
The seagrass habitats are a highly productive marine ecosystem which provides nursery ground and shelter for many fish and invertebrate species. Pholis nebulosa (Temminck & Schlegel, 1845) is one of the most abundant seagrass fishes in the coastal waters of Korea. The estimation of fish production is key for devising conservation measures and ensuring fish resources sustainability. A total 894 P. nebulosa ranging from 3.83 to 26.5 cm total length (TL) were collected monthly in 2006 with a small beam trawl in a seagrass bed of southern Korea. Growth parameters of P. nebulosa were estimated using the von Bertalanffy growth model, and production was estimated using a general equation which relates daily fish production to ash-free dry weight (AFDW), biomass, and water temperature. The von Bertalanffy's growth equation was estimated as: Lt = 28.3823(1-e-0.7835(t+0.9864)). The densities, biomass, daily, annual production, and P/B ratio were 0.069±0.061/m-2, 1.022±0.621 g/m2, 0.005±0.004 g AFDW/m2/day , 1.676 g A FDW/m2/yr, and 1.641, respectively. Monthly variation in production of P. nebulosa peaked during March and April 2006 (0.0139 and 0.0111 g AFDW/m2/day), whereas the lowest value of 0.0005 g AFDW/m2/day was in December. Monthly change in production of P. nebulosa was positively correlated with biomass and condition factor. Our results will contribute to the conservation of seagrass ecosystems, which are still undisturbed in the study area.