• Korean journal of applied entomology
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• v.55 no.4
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• pp.529-537
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• 2016

Six unrecorded click beetles of Elateridae are reported in Korea for the first time as follows: 1) Lacon altaicus ($Cand{\acute{e}}ze$, 1882) in Agrypnidae; 2) Diacanthous undulatus DeGeer, 1774, 3) Liotrichus ligneus ($Cand{\grave{e}}ze$, 1879), 4) Aplotarsus imperceptus Gurjeva, 1987, 5) Prosternon aurichalceum Stepanov, 1930, and 6) Anostirus (Anostirus) castaneus castaneus (Linnaeus, 1758) in Denticollinae. Among them, three genera, Diacanthous, Liotrichus, and Aplotarsus, are also recorded for the first time. The previously recorded sepcies, Prosternon tessellatum Linnaeus, 1758 is suggested to be excluded from the Korean fauna by a misidentification of P. aurichalceum.

• Korean journal of applied entomology
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• v.31 no.2
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• pp.170-173
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• 1992

Phytophagous insects of Monocotyledoneae were surveyed from May to October in 1991. Each p province was divided into 9 localities by $\boxplus$-shape for the collection. Seventeen weed species b belonging to 17 genera were collected, namely, 14 Graminales weed species of 14 genera, 1 s species of Farinales weed, and 1 species of Liliales weed. Phytophagous insects representing 5 orders, 13 families, 27 genera, and 36 species comprised the insect fauna on Monocotyledoneae w weeds. Five species were not identified out of 36 insect species. Grasshoppers, hemipteran, s scarab beetles, and leaf beetles were frequently collected. Lema concinnipennis was a potential biological agent on Commelina communis, and Oulema dilutipes was first collected from Setaria u viridis. Commelina communis in golf course was severely damaged by Adoretus tenuimacu/atus c chafer but this insect was also an important insect pest of turfgrass and trees.

• Archives of Pharmacal Research
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• v.28 no.7
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• pp.816-822
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• 2005

Catharsius protease-2 (CPM-2) was isolated from the body of dung beetles, Catharsius molossus, using a three step purification process (ammonium sulfate fractionation, gel filtration on Bio-Gel P-60, and affinity chromatography on DEAE Affi-Gel blue). The purified CPM-2, having a molecular weight of 24 kDa, was assessed homogeneously by SDS-polyacrylamide gel electrophoresis. The N-terminal amino acid sequence of CPM-2 was composed of X Val Gin Asp Phe Val Glu Glu lie Leu. CPM-2 was inactivated by $Cu^{2+}\;and\;Zn^{2+}$ and strongly inhibited by typical serine proteinase inhibitors such as TLCK, soybean trypsin inhibitor, aprotinin, benzamidine, and ${\alpha}_1$-antitrypsin. However, EDTA, EGTA, cysteine, $\beta$-mercaptoethanol, E64, and elastatinal had little effect on enzyme activity. In addition, antiplasmin and antithrombin III were not sensitive to CPM-2. Based on the results of a fibrinolytic activity test, CPM-2 readily cleaved $A{\alpha}-$ and $B{\beta}$-chains of fibrinogen and fibrin, and y-chain of fibrinogen more slowly. The nonspecific action of the enzyme resulted in extensive hydrolysis, releasing a variety of fibrinopeptides of fibrinogen and fibrin. Polyclonal antibodies of CPM-2 were reactive to the native form of antigen. The ELISA was applied to detect quantities, in nanograms, of the antigen in CPM-2 protein.

• Journal of Animal Science and Technology
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• v.63 no.1
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• pp.16-24
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• 2021

The suppressive effect of monensin as an ionophore-feed additive on enteric methane (CH4) emission and renewable methanogenesis were evaluated. To clarify the suppressive effect of monensin a respiratory trial with head cage was performed using Holstein-Friesian steers. Steers were offered high concentrate diets (80% concentrate and 20% hay) ad libitum with or without monensin, galacto-oligosaccharides (GOS) or L-cysteine. Steers that received monensin containing diet had significantly (p < 0.01) lower enteric CH4 emissions as well as those that received GOS containing diet (p < 0.05) compared to steers fed control diets. Thermophilic digesters at 55℃ that received manure from steers fed on monensin diets had a delay in the initial CH4 production. Monensin is a strong inhibitor of enteric methanogenesis, but has a negative impact on biogas energy production at short retention times. Effects of the activity of coprophagous insects on CH4 and nitrous oxide (N2O) emissions from cattle dung pats were assessed in anaerobic in vitro continuous gas quantification system modified to aerobic quantification device. The CH4 emission from dungs with adults of Caccobius jessoensis Harold (dung beetle) and the larvae of the fly Neomyia cornicina (Fabricius) were compared with that from control dung without insect. The cumulative CH4 emission rate from dung with dung insects decreased at 42.2% in dung beetles and 77.8% in fly larvae compared to that from control dung without insects. However, the cumulative N2O emission rate increased 23.4% in dung beetles even though it reduced 88.6% in fly larvae compared to dung without coprophagous insects. It was suggested that the antibacterial efficacy of ionophores supplemented as a growth promoter still continued even in the digested slurry, consequently, possible environmental contamination with the antibiotics might be active to put the negative impact to land ecosystem involved in greenhouse gas mitigation when the digested slurry was applied to the fields as liquid manure.

• Korean journal of applied entomology
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• v.48 no.3
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• pp.335-345
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• 2009

Effect of four nematicidal herbal extracts (Daphne genkwa, Eugenia caryophyllata, Quisqualis indica and Zingiber officinale) and 3 acricidal herbal extracts (Pharbitis nil, Xanthium strumarium, and Desmodium caudatum) on entomopathobenic nematodes [Steinernema carpocapsae Pocheon strain (ScP) and Heterorhabditis sp. Gyeongsan strain (HG)], silkworm (Bombyx mori), and ground beetles (Synuchus sp.) were investigated in the laboratory and field. D. genkwa was highly toxic to SCP and HG (100% mortality) at the concentration of 5,000 ppm in X-plate. All the infective juveniles of HG were dead after 3 days by E. caryophyllata and Q. indica. The mortality of ScP and HG was below 10% by D. genkwa, D. caudatum, E. caryophyllata, Q. indica and Z. officinale at the concentration of 1,000 ppm two days after treatment while mortality of HG was 62.8% by D. genkwa at the concentration of 1,000 ppm in X-plate. However, 1,000 ppm had not effect on nematode survival and pathogenicity of ScP in sand column. On the contrary, E. caryophyllata had effect on pathogenicity of HG. Mean number of dead Galleria mellonella larva of HG was 0.5 in E. caryophyllata treatment. Q. indica did not effect silkworm reared on mulberry leaves at the treatment of 1,000 ppm in 10 days after treatment. However, there were 20.0 and 100% mortalities in the treatment of D. genkwa 3 and 10 days after treatment, respectively. The weight of silkworm was low in D. genkwa and did not pupate. The weight of pupa and cocoon were not different in E. caryophyllata, P. nil, Q. indica, X. strumarium and Z. officinale. D. genkwa, E. caryophyllata, P. nil, Q. indica and Z. officinale had no effect on ground beetles, Synuchus sp. in forest soil.

• Korean journal of applied entomology
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• v.46 no.1 s.145
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• pp.97-107
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• 2007

The multicolored Asian ladybird beetle (Harmonia axyridis) has been commonly used with biological control agents for control of several kinds of aphids in agroecosystems. Also, environment friendly agricultural materials have been commonly applied in crop fields because the government held down pesticide application and environment friendly agricultures are gradually increased with consumer's desires. The multicolored Asian ladybird beetles may be directly or indirectly under the influence of environment friendly agricultural materials In crop fields. The insecticidal environment friendly agricultural materials (IEFAMs) might be saff against each developmental stage of multicolored Asian ladybird beetle. Fungicidal environment friendly agricultural materials (FEFAMs) had a miner effect to each developmental stage of multicolored Asian ladybird beetle with the exception of FEFAM A. Environment friendly agricultural materials contained useful soil microorganisms (EFAMSMs) C and H might be down the hatching rate of eggs, and EFAMSM A and F had a killing effect to 1st instar of lady beetles. Environment friendly agricultural materials contained plant extracts (EFAMPEs) A and D might be suffered effect a deathblow of egg hatching with lady beetles. Otherwise, there was a miner effect to lady beetles with the rest of tested environment friendly agricultural materials.

• Mycobiology
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• v.40 no.2
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• pp.94-99
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• 2012

During an investigation of fungi from an elm tree infested with bark beetles in Korea, one isolate, DUCC401, was isolated from elm wood. Based on morphological characteristics and phylogenetic analysis of the internal transcribed spacer and 28S rDNA (large subunit) sequences, the isolate, DUCC401, was identified as Mariannaea samuelsii. Mycelia of the fungus grew faster on malt extract agar than on potato dextrose agar and oatmeal agar media. Temperature and pH for optimal growth of fungal mycelia were 25oC and pH 7.0, respectively. The fungus demonstrated the capacity to degrade cellobiose, starch, and xylan. This is the first report on isolation of Mariannaea samuelsii in Korea.

• Animal Systematics, Evolution and Diversity
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• v.36 no.1
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• pp.17-24
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• 2020

Doryctinae is a large and heterogeneous group with more than 1,000 described. It is idiobiont ectoparasitoids on the larvae of wood-boring and xylophagous beetles. Some species attack larvae of wood boring lepidoptera. In the present study, fifteen species belonging to eight genera of the subfamily Doryctinae are recorded for the first time from Korea: Doryctes Haliday (2 species), Eodendrus Belokobylskij (1 species), Heterospilus Haliday (4 species), Monolexis Förster (1 species), Neurocrassus Snoflak (2 species), Rhoptrocentrus Marshall (1 species), Sonanus Belokobylskij et Konishi (1 species), Spathius Nees (3 speices). The genera Eodendrus Belokobylskij, Monolexis Förster, Rhoptrocentrus Marshall, Sonanus Belokobylskij et Konishi and fifteen species are reported for the first times from Korea. Diagnosis and host information are provided.

• Korean journal of applied entomology
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• v.50 no.2
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• pp.125-130
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• 2011

A taxonomic review of the fungivorous tetratomid beetles in Korea, which comprises four species belonging to two genera of two subfamilies, is presented. Three species, Holostrophus (Paraholostrophus) orientalis Lewis, 1895 and two newly recorded species, Pisenus insignis (Reitter, 1889) and Holostrophus diversefasciatus Pic, 1921, are identified and described herein. A photograph of adults, diagnoses, illustrations of diagnostic characteristics, and ecological information regarding habitat, and host fungi are provided.

• Animal Systematics, Evolution and Diversity
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• v.14 no.1
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• pp.21-33
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• 1998

Twenty-five nominal species of Korea stag beetles have been reported from Korea since Heyden (1887). As a result of the present study, seven species are synonymized and the following six species are excluded from Korean fauna because they have been misidentified: Aegus laevicollis, Platycerus delicatulus, P. acuticollis, Gnaphaloryx velutinus, Prismognathus angularis and Nipponodorcus montivagus. The two species, Dorcus taiwanicus and A. laevicollis are discovered newly. Therfore, Korean Lucanidae consists of 14 species of 10 genera.