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        검색결과 5

        1.
        2018.04 구독 인증기관·개인회원 무료
        풀무치(Locusta migratoria)는 메뚜기과에 속하는 곤충으로 70% 이상의 단백질을 함유하고 있어 식사료용 곤충으로 이용 가능성이 높다. 그러나 풀무치의 대량생산을 위한 연중사육 관련 연구는 미흡하여 사육방법 정립, 먹이원 선발 등이 필요하다. 본 연구에서는 풀무치의 연중사육을 위한 방법으로 사육밀도에 따른 생육 특성과 최적 산란처를 찾기 위해 상토, 오아시스 등을 이용하여 산란 특성을 조사하였다. 풀무치의 생육 온도는 28℃, 습도는 65% 내외로 유지하고 처리구별 생존율, 탈피횟수, 크기, 무게 등을 측정하였다. 사육밀도별 약충 기간은 32일 소요되었고, 생존율은 82~90 %였으며, 성충 기간은 110~120일 소요되었다. 산란처별 난괴 길이는 33~49mm였으며, 부화 후 생존율을 72~82%였다.
        2.
        2014.10 구독 인증기관·개인회원 무료
        RDA(Rural Development Administration of Agriculture) and YIRI(Yecheon-gun Industrial Insect Research Institute) was development of 3 strains crossbred honey bee(Apis mellifera) for increasing honey production(HP). The overall goal of this research is to improve the honey production of queen honey bees. This will enhance the economic value of the nation’s honey bees for honey production, and hazard resistance. Our main objective of this research is to test of honey bees(A. mellifera) that have increased as well as being good honey producers and resistance of disease in jeon-nam province. The new honey bee(A. mellifera) stock were identified ability of increasing honey production by comparing with rearing practice colony. The new honey bee(A. mellifera) stock can produce more than 30~50% honey(HP; 12.31 kg) comparing with rearing practice colonies(control 1; 8.17 kg, and control 2; 9.53 kg). Furthermore, we are calculated the number of worker bee per colony. Population of worker bee in new honey bee(A. mellifera) stock are 2,849 (colony 1), 8,860 (colony 2) and 10,451 (colony 3), it was more then 1.2~3.7 fold comparing with controls.
        3.
        2014.10 구독 인증기관·개인회원 무료
        Cockroaches are insects of the order Blattodea, sometimes also called Blattaria, of which about 30 species out of 4,600 total are associated with human habitats. About four species are well known as pests. Among the best-known pest species are the American cockroach, Periplaneta americana, which is about 30 mm long; the German cockroach, Blattella germanica, about 15 mm long. We researched growing condition of in-vitro(temperature and humidity) for P. americana and B. germanica. The cockroach is divided in three sections; the body is flattened and broadly oval, with a shield-like pronotum covering its head. A pronotum is a plate-like structure that covers all or part of the dorsal surface of the thorax of certain insects. They also have chewing mouth parts, long, segmented antennae, and leathery fore wings with delicate hind wings. The third section of the cockroach is the abdomen. We measured size of head, abdomen, and body length during differential stages. Also, we checked number of egg, size of egg, hatching rates, period of former laying eggs, and laying periods etc.
        4.
        2014.10 구독 인증기관·개인회원 무료
        Vitellogenins (Vgs) are precursors of the major egg storage protein, vitellin (Vn), in many oviparous animals. Insects Vgs are large molecules (200-kD) synthesized in the fat body in a process that involves substantial structural modifications (e.g., glycosylation, lipidation, phosphorylation, and proteolytic cleavage, etc.) of the nascent protein prior to its secretion and transport to the ovaries. However, the extent to which Vgs are processed in the fat body varies greatly among different insect groups. We were cloned Vgs partial genes PaVgs and BgVgs from Periplaneta americana and Blattella germanica. Real-time quantitative PCR shows that PaVgs and BgVgs were differential-regulated with aging. In insects, glutathione S-transferases (GSTs) are enzymes involved in detoxification of insecticides. We were cloned GST partial genes PaGST and BgGST from Periplaneta americana and Blattella germanica. Real-time quantitative PCR shows that PaGST and BgGST were up-regulated with aging, and the mRNA level of PaGST and BgGST was higher in 4℃ and 37℃ than room temperature. The expression level of PaGST and BgGST exposure to temperature stress suggests that PaGST and BgGST are up-regulated after exposure low and hige temperature treatments.
        5.
        2013.10 구독 인증기관·개인회원 무료
        Jeon-Nam province has the largest number of managed honey bee(Apis cerana) colonies before 2009 years ago, which produce the highest quantity of honey in the Korea; however, almost colony were collapsed by Sacbrood Virus(SBV) in jeon-nam apiaries. We thus conducted a molecular survey of honey bee RNA viruses, Nosema microsporidia, Foul broods and fungal disease(Chalk brood and Stone brood) associated with environmental conditions in apiaries and differential A. cerana hives in Joun-nam province. We found the presence of black queen cell virus (BQCV), Israel Acute Paralysis Virus and Nosema apis. Sacbrood virus(SBV) was detected in the tested samples. Our results demonstrate that honey bee RNA viruses and N. apis are present in joen-nam province apiaries, and some might be related environment conditions(temperature and moisture).