• Korean Journal of Veterinary Research
• /
• 제19권1호
• /
• pp.53-56
• /
• 1979

This studies were made to identify and classify the mites infected in the fur of mice in Taegu from Oct. 1977 to Feb. 1978. The collected mites were mounted by Modified Bereles's Medium for permanent preparations. The classification of body setae was followed as proposed by Sawazaki. The results were as follows: 1. The species discovered were two species of Myobia musculi (Scnrank, 1781) and Myocoptes musculinus (Koch, 1840). 2. The infection rate of M. musculinus was 100% of total 55 mice but M. musculi was detected only in two cases. 3. One pairs of ventral body seta ($V_2b$) of musculi was newly discovered at the ventral surface of just under the base of the 2nd leg.

• Journal of Applied Biological Chemistry
• /
• 제58권3호
• /
• pp.197-199
• /
• 2015

The composition of the essential oil of Ligustrum japonicum leaves was determined by GC-MS analysis. The major constituents of L. japonicum leaf oil were germacrene D (40.50%), ${\alpha}$-pinene (13.63%), (-)-${\beta}$-elemene (6.42%), ${\beta}$-caryophyllene (5.73%), and $\delta$-cadinene (5.47%). The acaricidal activities of L. japonicum oil were evaluated against acaridae and pyroglyphid mites. In the fumigant bioassay, the $LD_{50}$ values of L. japonicum oil were 16.48, 12.38, and $15.63{\mu}g/cm^3$ against Tyrophagus putrescentiae, Dermatophagoides farinae, and D. pteronyssinus, respectively. In the contact bioassay, the $LD_{50}$ values of L. japonicum oil were 8.02, 5.02, and $7.67{\mu}g/cm^2$ against T. putrescentiae, D. farinae, and D. pteronyssinus, respectively.

• The Korean Journal of Zoology
• /
• 제31권2호
• /
• pp.147-155
• /
• 1988

Six species of false spider mites were collected and ciassifled in South Korea. Among them, a taxonomic description was carried out on the following four species new to Korea: 1. Aegyptobia nothus Pritchard and Baker, 2. Pentomerismus taxi (Hailer), 3. P. oregonensis McGregor, 4. Brevipalpus lewisi McGregor. And also esterase and alkaline phosphatase patterns obtained by polyacrylamide slab gel electrophoresis were compared on some spades. Esterase rymogram showed difference among species in band number and mobility.

• Animal Systematics, Evolution and Diversity
• /
• 제2권2호
• /
• pp.13-26
• /
• 1986

A Taxonomic investigation was carried out on the following seven spider mites (Family tetranychidae) by comparison of morphological characters, cuticular lobes and karyotypes. Materials used in this study were collected and reared at Jeonju, Jorea during October 1985-June 1986. Subfamily Bryobiinae ; Bryobia praetiosa Koch, 1836 ; Petrobia latens (Mller, 1776). Subfamily Tetranychinae ; Panonychus citri (McGregor , 1919) ; P.ulmi (Koch, 1836): T vienensis tranychus Zacher , 1920 ; T.urticae (Koch, 1836) ; T. kanzawai Kishida , 1927. Of them two species, P. latens and T. kanzawai , are newly recorded from Korea.

• The Korean Journal of Soil Zoology
• /
• 제7권1_2호
• /
• pp.23-28
• /
• 2002

In the course of taxonomical studies of oribatid mites, eight species, Tenuiala nuda Ewing, 1913, Cosmopirnodus angulatus Ichisawa and Aoki, 1998, Neoribates pallidus Aoki, 1988, Belba sellnicki Bulanova-Zachvatkina, 1962, Camisia horrida (Hermann 1804), Hermannia gibba (C. L. Koch 1839), Eueremaeus elongatus (Fujikawa 1972), and Licnodamaeus undulatus (Paoli 1908) are recorded from Korea for the first time.

• Korean journal of applied entomology
• /
• 제42권3호
• /
• pp.257-262
• /
• 2003

Spider mites and their predacious mites were surveyed in an apple orchard where pesticides have not been applied for a long time, to understand the undisrupted predacious mite complex and their role in the controling spider mites. Spider mites occurring in the orchard were different to those in conventional orchards. A few Tetranychus urticae and Panonychus ulmi were observed, while T. kanzawai was abundant during growing season. Four species of phytoseiids, Amblyseius eharai, A. kokufuensis, A. womersleyi and Typhlodromus vulgaris, and one stigmaeid species of Agistemus terminalis were observed from leaf samples in the orchard. Among them, T. vulgaris occurred from early cool season with low T. kanzawai densities through to mid-and late-season. A. womersleyi was observed only during mid-season when T. kanzawai densities were high with hot weather. Amblyseius eharai and A. kokufuensis occured only in early season, but A. terminalis density increased from mid-season and lasted to late-season. The predacious mite complex regulated the density of T. kanzawai approximately under 8 mites per leaf. Tentatively concluding, T. vulgaris is an adaptable predator at lower prey density under cool weather condition, and A. womersleyi is effective predator at higher prey density under hot weather condition. Further, the biological control strategies of spider mites in Korean orchards were discussed based on the predacious mite complex.

• Parasites, Hosts and Diseases
• /
• 제59권6호
• /
• pp.625-634
• /
• 2021

Based on the field investigations in 91 investigation sites (counties) in southwest China between 2001 and 2019, the present paper reported the chigger mites on A. agrarius mice in southwest China for the first time by using a series of statistical methods. From 715 striped field mice captured in 28 of 91 investigated sites, only 255 chiggers were collected, and they were identified as 14 species, 6 genera in 3 subfamilies under 2 families. Of 715 A. agrarius mice, only 24 of them were infested with chigger mites with low overall prevalence (P_M=3.4%), overall mean abundance (M_A=0.36 mites/host) and overall mean intensity (M_I=10.63 mites/host). The species diversity and infestation of chiggers on A. agrarius were much lower than those previously reported on some other rodents in southwest China. On a certain species of rodent, A. agrarius mouse in southwest China seems to have a very low susceptibility to chigger infestations than in other geographical regions. Of 14 chigger species, there were 3 dominant species, Leptotrombidium sialkotense, L. rupestre and Schoengastiella novoconfuciana, which were of aggregated distribution among different individuals of A. agrarius hosts. L. sialkotense, one of 6 main vectors of scrub typhus in China, was the first dominant on A. agrarius. The species similarity of chigger mites on male and female hosts was low with C_SS=0.25, and this reflects the sex-bias of different genders of A. agrarius mice in harboring different chigger species.

• The Korean Journal of Soil Zoology
• /
• 제3권2호
• /
• pp.106-110
• /
• 1998

Hitherto, a total of 112 species of 88 genera under 55 families of oribatid mites were reported from Cheju island. Of these, 76 species were added newly recorded species as the faunal list of the island.

• The Korean Journal of Soil Zoology
• /
• 제1권2호
• /
• pp.89-94
• /
• 1996

A total of 74 species belonging to 56 genera under 33 families of oribatid mites was reported from the coniferous forest in Mt. Namsan. A total of 85 species belong to 58 genera under 33 families was reported from the deciduous forest in Mt. Namsan.

• The Korean Journal of Soil Zoology
• /
• 제2권1호
• /
• pp.16-18
• /
• 1997

Compared with type specimen Acanthobelba tortuosa Enami and Aoki, 1993, a new species, A. heterosetosa sp. nov., of oribatid mites collected from Mt. Jiri has the following characteristic figures. Sensillus is long, slightly thickened at distal part, and covered with barbs sparsely. A pair of prodorsal tubercles Da are present. Natogastral frontal tubercles sa is elongated rather than hooked. Dorsal setae are not the same in shape and length: setae c1 and c2 are thick, blunt at tip, covered with small barbs and curved several times, but others are smooth.