• Animal cells and systems
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• v.8
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• pp.43-43
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• 2004

• Journal of Sericultural and Entomological Science
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• v.6
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• pp.9-17
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• 1966

The ratio of form and character in the text generation of silkworms which were double copulated between home race copulation and hetero race copulation in crossing with two males of different races for female(double crossing) are different according to the copulating time, copulating order and sperm activities. But the general tendencies are as follows; 1. During two hour's double copulation, sufficiently ejaculating time, the fertilization percentage of hetero lace copulation are higher than that of homo race, but in case of double copulation with plain and normal marked silkworms showed opposite results. The fertilization percentage of homo race copulation are equal or higher compare with that of hetero race copulation. 2. The form and character of the next generation were largely effected by copulating order, so the primary copulating moths are more effected in the next generation than the secondary moths. 3. The active sperms were more fertilized than non-active sperms in the double copulation.

• Animal Systematics, Evolution and Diversity
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• v.32 no.4
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• pp.297-300
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• 2016

Here, we report three new arctiine moths for the first time in Korea, Siccia shikatai Kishida, Nudaria ranruna Matsumura, and Pelosia angusta (Staudinger). Siccia shikatai is distinguished by grayish forewings with a thick and blackish antemedial line, a thin, dark brown and dentate postmedial line and a black <-shaped discal spot and grayish hindwing with a dark brown discal dot. Nudaria ranruna is distinguished by the whitish fore- and hindwings and a large, blackish discal dot and thick medial lines on the forewing. Pelosia angusta is distinguished by dark grayish fore- and hindwings and a thick, dark brown, curved medial line on the forewing.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2001.11a
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• pp.21-22
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• 2001

• Journal of Multimedia Information System
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• v.7 no.2
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• pp.189-196
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• 2020

We have developed a device for recording biological data by inserting three electrodes and a needle with an angular velocity sensor into the moth for the purpose of measuring the electromyogram of the flapping and the corresponding lift force. With this measurement, it is possible to evaluate the moth-physiological function of moths, and the amount of pesticides that insects are exposed to (currently LD50-based standards), especially the amount of chronic low-concentration exposure, can be reduced the dose. We measured and recorded 2-channel electromyography (EMG) and angular velocity corresponding to pitch angle (pitch-like angle) associated with wing flapping for 100 sweet potato hawkmoths (50 females and 50 males) with the animals suspended and constrained in air. Overall, the angular velocity and amplitude of EMG signals demonstrated high correlation, with a correlation coefficient of R = 0.792. In contrast, the results of analysis performed on the peak-to-peak (PP) EMG intervals, which correspond to the RR intervals of ECG signals, indicated a correlation between ΔF fluctuation and angular velocity of R = 0.379. Thus, the accuracy of the regression curve was relatively poor. Using a DC amplification circuit without capacitive coupling as the EMG amplification circuit, we confirmed that the baseline changes at the gear change point of wing flapping. The following formula gives the lift provided by the wing: angular velocity × thoracic weight - air resistance - (eddy resistance due to turbulence). In future studies, we plan to attach a micro radio transmitter to the moths to gather data on potential energy, kinetic energy, and displacement during free flight for analysis. Such physiological functional evaluations of moths may alleviate damage to insect health due to repeated exposure to multiple agrochemicals and may lead to significant changes in the toxicity standards, which are currently based on LD50 values.

• International Journal of Industrial Entomology and Biomaterials
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• v.31 no.2
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• pp.85-89
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• 2015

This peptide has antibacterial activity against several Gram-positive and Gram-negative bacteria. Bombyx mori cecropinB1(BmCecB1) is antimicrobial peptides from Bombyx mori and belongs to cecropin family. Antimicrobial peptides are important components of the innate immune systems in all living organism. To produce the BmCecB1 antimicrobial peptide, we constructed transgenic silkworm that expressed BmCecB1 gene under the control BmA3 promoter using piggyBac vector. The use of the 3xP3-driven EGFP cDNA as a marker allowed us to rapidly distinguish transgenic silkworm. Mixtures of the donor vector and helper vector were micro-injected into 600 eggs of bivoltin silkworms, Baegokjam. In total, 49 larvae (G0) were hatched and allowed to develop into moths. The resulting G1 generation consisted of 22 broods, and we selected 2 broods containing at least 1 EGFP-positive embryo. The rate of successful transgenesis for the G1 broods was 9%. We identified 9 EGFP-positive G1 moths and these were backcrossed with wild-type moths. With the aim of identifying a BmCecB1 as antimicrobial peptide, we investigated the Radical diffusion Assay (RDA) and then demonstrated that BmCecB1 possesses high antibacterial activities against Gram-negative bacteria.

• Korean journal of applied entomology
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• v.51 no.4
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• pp.443-447
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• 2012

Clearwing moths (Lepidoptera: Sesiidae) are economically important pests of fruit trees, such as apple, peach, and grape in Korea. Larvae feed on the phloem and cambium within tree branches of host plants. In this study, the seasonal fluctuation in male catches of four clearwing moths, Synanthedon haitangvora, S. bicingulata, Nokona regalis, and Glossosphecia romanovi, were monitored with the respective sex pheromone traps in Suwon for three years. In apple orchards, S. haitangvora males were captured from May to October, with two peaks in early June to middle June and late August to early September. Similarly, S. bicingulata males were trapped from May to October, with two peaks in late May and late August to middle September in peach orchards. In vineyards, N. regalis males were captured from late May to middle June with one peak in late May to early June, while G. romanovi males were trapped from early June to late July with one peak in late June to early July.

• Korean Journal of Environmental Biology
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• v.36 no.2
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• pp.180-189
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• 2018

Agricultural landscapes in Korea comprise a large cultivation area of rice paddies, other crops, and forests which surround the cropland and the farmers' residential village. The forests in this agricultural landscape play important roles as ecological corridors and refuges for plants and animals in this agroecosystem. The present study investigated the spatial and temporal diversity patterns among these components of the agroecosystem to provide baseline data that describes how fauna change in the studies system. Insect sampling was conducted at four sites in two regions, Chungcheong (Ockcheon and Geumsan) and Jeonnam (Younggwang and Haenam), from March to August of 2014, using an UV light trap for moths and five pitfall traps for beetles. Beetles comprised 225 species and 2,457 individuals in 35 families, while moths consisted of 141 species and 403 individuals in 17 families. Beetles showed higher diversity in Chungcheong than Jeonnam, while moths showed no difference in diversity between regions. Forests showed the highest number of species and individuals, followed by orchards and rice paddies. The food preference of beetles showed that forests contained a higher proportion of herbivores, while orchards and rice paddies had a higher proportion of carnivores. Temporal changes in moths in the two regions were synchronous, while those of beetles were nonsynchronous. Moths increased from spring to summer across all habitats, especially in rice paddies during summer. Beetles also increased from spring to summer in orchards and rice paddies, although the beetles in the forests increased in the middle of summer. A detailed and long-term study is needed to reveal the causes of different diversity patterns of taxa among the different habitats within the agroecosystems.

• Korean journal of applied entomology
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• v.7
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• pp.15-20
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• 1969

This experiment was planned to study the mating behavior of the fall webworm. Hyphantria cunea Drury. In this experiment. observations on mating behavior of the fall webworm were based on the time of moth emergence, time of mating activity, copulation period, mating frequency, and effect of moth ages on the mating ratio. Mating frequency was determined by visual observation and the number of spermatophores. The results obtained were as follows; 1) The moths started emerging at about 3 P. M. and ended at about 12 P. M. The peak of moth emergence was between 7 and 8 P. M. Total ratio or the moths emerged between 7 and 8 P. M. was 42. 1 for female and 41.8 for male. 2) Mating activity was mostly confined to the period between 5 and 6 A. M. The average complation period was 12 hours (ranges between 7 and 17 hours). 3) The average ratio of single mating was $66.0\%$ for both sexes, and that of double. matings were $4.1\%$ for females and $5.4\%$ for males in laboratory test. The mating ratio of female moths collected from the field was $62.1\%$ for single mating. and 15.5" for doubles matings. These data indicated that single mating seemed to be most common. 4) Mating usually occured within four days after the emergence from the pupae. Mating ratio was greatly varied with the moth ages. The highest mating ratio was observed within 6 to 15 hours after moth emergence. Both sexes usually mated with the moths of the same ages.

• The Korean Journal of Zoology
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• v.7 no.2
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• pp.58-58
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• 1964

울릉도산 나방은 1929년 조복성 박사 (조·박 10,8) 에 의해 2 종이 보고되었고 그후 1936 년 일인 정목삼랑(곤충10 : 5, 267) 에 의하여 3종이 추가 보고되었다. 필자는 1961년 동도에서 채집된 신유항씨의 표본을 재료로 8종의 울릉도 미기록종을 추가한다. 그 중 2 종은 한국미기록종이다.