• International Journal of Industrial Entomology and Biomaterials
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• v.33 no.2
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• pp.68-71
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• 2016

Sciaria thoracica Matsumura belonging to the family Sciaridae is recorded from Korea for the first time. This species is a conspicuous species having the rufous thorax in Palearctic region. The morphological diagnosis and photos of adult, and the result of DNA barcoding inferred from the Korean and the Japanese populations of S. thoracica are provided.

• Korean Journal of Ichthyology
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• v.24 no.4
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• pp.272-277
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• 2012

The feeding habits of black scraper, Thamnaconus modestus, were studied using 172 specimens collected in the coastal waters of Geomun-do, Korea. The size of the specimens ranged from 16.2 to 39.1 cm in standard length (SL). T. modestus was a omnivore that consumes mainly benthos. Of the benthos species nephtheidae was the most preferred prey. Its diet also includes, algae, thoracica, gastropoda, desmospongia. Small and medium size individuals (<21~33 cm, SL) fed mainly on nephtheidae and algae. Larger individuals (>33 cm, SL) fed mainly on thoracica. The proportion of nephtheidae decreased as body size increased (>33 cm, SL), whereas the consumption of thoracica gradually increased.

• Korean journal of applied entomology
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• v.61 no.4
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• pp.623-631
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• 2022

The family Ptiliidae (Insecta: Coleoptera) has approximately 1,000 valid species in 100 recognized genera. Ptiliid beetles are readily collected from various habitats. They can be distinguished by feather-like hindwings and small body sizes. The genus Acrotrichis is the largest ptiliid genus. It contains almost a quarter of all ptiliids. In Korea, a single species of Acrotrichis lewisii (Matthews, 1884b) was recently reported in 2020. In this paper, we report two additional species, A. thoracica (Waltl, 1838) and A. grandicollis (Mannerheim, 1844) from the Korean Peninsula, collected during an assessment of biological variation in agricultural land of Jeju Island. Illustrations of habitus and diagnostic characters, distribution map and a key to Korean Acrotrichis species are provided.

• The Korean Journal of Pain
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• v.37 no.2
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• pp.141-150
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• 2024

Background: Stingless bee propolis is a popular traditional folk medicine and has been employed since ancient times. This study aimed to evaluate the antinociceptive activities of the chemical constituents of aqueous propolis extract (APE) collected by Trigona thoracica in a nociceptive model in mice. Methods: The identification of chemical constituents of APE was performed using high-performance liquid chromatography (HPLC). Ninety-six male Swiss mice were administered APE (400 mg/kg, 1,000 mg/kg, and 2,000 mg/kg) before developing nociceptive pain models. Then, the antinociceptive properties of each APE dose were evaluated in acetic acid-induced abdominal constriction, hot plate test, and formalin-induced paw licking test. Administration of normal saline, acetylsalicylic acid (ASA, 100 mg/kg, orally), and morphine (5 mg/kg, intraperitoneally) were used for the experiments. Results: HPLC revealed that the APE from Trigona thoracica contained p-coumaric acid (R² = 0.999) and caffeic acid (R² = 0.998). Although all APE dosages showed inhibition of acetic acid-induced abdominal constriction, only 2,000 mg/kg was comparable to the result of ASA (68.7% vs. 73.3%, respectively). In the hot plate test, only 2,000 mg/kg of APE increased the latency time significantly compared to the control. In the formalin test, the durations of paw licking were significantly reduced at early and late phases in all APE groups with a decrease from 45.1% to 53.3%. Conclusions: APE from Trigona thoracica, containing p-coumaric acid and caffeic acid, exhibited antinociceptive effects, which supports its potential use in targeting the prevention or reversal of central and peripheral sensitization that may produce clinical pain conditions.

• Molecules and Cells
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• v.22 no.3
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• pp.314-322
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• 2006

The whole mitochondrial genome (14,915 nt) of Pollicipes mitella (Crustacea, Maxillopoda, Cirripedia, Thoracica) was sequenced and characterized. It is the shortest of the 31 completely sequenced crustacean mitochondrial genomes, with the exception of a copepod Tigriopus japonicus (14,628 nt). It consists of the usual 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and 1 relatively short non-coding region (294 nt). The thoracican cirripeds apart from Megabalanus volcano have the same arrangement of protein-coding genes as Limulus polypemus, but there are frequent tRNA gene translocations (at least 8). Some interesting translocation features that may be specific to the thoracican cirriped lineage are as follows: 1) trnK-trnQ lies between the control region and trnI, 2) trnA-trnE lies between trnN and trnS1, 3) trnP lies between ND4L and trnT, and 4) trnY-trnC lies between trnS2 and ND1. In P. mitella there are two trnL genes (L1 and L2) in the typical crustacean positions (ND1-L1-LrRNA and CO1-L2-CO2). The present result is compared and discussed with the other three cirriped mitochondrial genomes from one pedunculate (Pollicipes polymerus) and two sessiles (Tetraclita japonica and M. volcano) published so far. Mitochondrial protein phylogenies reconstructed by the BI and ML algorithms show that the thoracican Cirripedia is monophyletic (BPP 100/BP 100) and associated with Remipedia (BPP 98/BP 35). In addition, Oligostraca, including Ostracoda, Branchiura, and Pentastomida, is a monophyletic group (BPP 99/BP 68), and is basal to all the other examined arthropods. Remipedia + Cirripedia appears as an independent lineage within Arthropoda, apart from Thoracopoda (Malacostraca, Branchiopda, and Cephalocarida). The Thoracopoda is paraphyletic to Hexapoda. The present result suggests that the monophylies of Crustacea and Maxillopoda should be reconsidered.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.50 no.4
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• pp.604-613
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• 2014

Community structures and species composition in benthic crustacean around Oryukdo of Busan was investigated using a SCUBA diving in 2011. A total 115 species, 51 families, and 4 taxa were collected during the sampling periods. Species were included 52 species in amphipoda, 49 in decapoda, 8 in isopoda and 6 in thoracica. On cluster analysis, the benthic crustacea community was classified into three groups based on the species composition: group A occurred in spring, group B in autumn and winter and group C in summer. Species composition in benthic crustacean corresponded with the water temperature.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.23 no.6
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• pp.457-467
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• 1990

Sessile barnacle, Balanus trigonus Darwin, was collected from the intertidal rocks and the external shells of bivalve Mylius coruscus. The nauplius and cyprid larvae were cultured in a constant temperature cabinet at a temperature of $20^{\circ}C$ and a light regime of 14 h light and 10 h darkness. Larval development includes the six nauplius stages and a cyprid stage prior to settlement and metamorphosis to the young adult. Morphological characteristics including antennules, antennae and mandibles are described and illustrated. All nauplius larvae have trilobed labra typical in balanoides. The developmental time taken from newly hatched nauplius I to cyprid was $9\~13$ days and averaged 11 days.

• Fisheries and Aquatic Sciences
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• v.1 no.1
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• pp.72-78
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• 1998

The larvae of Balanus improvisus were reared in the laboratory from hatching to cyprid. Larval development consists of six nauplius stages and a cyprid. Morphological features of all the nauplius stages are illustrated and described.

• The Korean Journal of Zoology
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• v.23 no.3
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• pp.161-194
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• 1980

The authors examined intertidal and sublittoral balanomorph barnacles which were collected from 38 localities in South Korea during the period from 1963 to 1978. 2. Identified and classified materials are composed of 15 species and 2 subspecies, all of which are described, under 10 genera and 5 damilies, of which 2 species and 1 subspecies are new to Korea as follows: Chelonibia patula, Chirona (Striatobalanus) amaryllis, Solidobalanus (Hesperibalanus) hesperius hesperius. 3. As dominant species, Chthamalus challengeri and Tetraclita squamosa japonica are widely distributed in Korea through East Sea, South Sea and Yellow Sea. 4. Balanus albicostatus and B. kondakovi are commonly found in intertidal brackish waters of Yellos Sea and South Sea, whereas, B. trigonus and Megabalanus rosa are typical sublittoral forms.

• The Korean Journal of Zoology
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• v.34 no.1
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• pp.81-92
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• 1991

Nauplii and cyprid la%ae were cultured in the laboratory at a temperature of 25'c of 33 parts per thousand. La%al development includes the six nauplius and a cyprn'dstages. Morphological characteristics such as antennules, antennae and mandibles as well as the general pattern of the thoracican Cirripedia are described and illustrated. All the nauplius larvae have trilobed labra which are typical in balanoides, with numerous slender hairs. It is possible to compare the setation of larva of Balanus kondakoui with those of B. albicostatus, B. amphitrr'te, 9. trigonus, B. uariegatus, and Chthamafus rhallengerl' by plotting of numerical setation of the antennae against the mandibles.