• 제목/요약/키워드: Pupal duration

검색결과 27건 처리시간 0.023초

두류 품종별 잎특성과 담배거세미나방의 생태연구: II. 용발육 및 성충수명 (Leaf Characteristics of Leguminous Plants and the Biology of Tobacco Cutworm, Spodoptera litura Fabricius: II. Pupal Development and Adult Longevity)

  • 배순도
    • 한국응용곤충학회지
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    • 제38권3호
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    • pp.225-230
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    • 1999
  • 두류의 품종별 담배거세미나방의 유충사육에 따른 용발육 및 성충수명에 미치는 영향을 조사하였다. 담배거세미나방의 용기간은 8.7~9.5얼로 강낭콤 및 동부에서 짧았으며, 두유콩, 새알콩 및 선화녹두에서 길었고, 암컷의 용기간이 수컷보다 약 1일 짧았다. 전용기간은 약 1.7~2.0일이었으며, 후용기간은 약 6.7~7.7일 이있다. 용무게는 0.23~0.38g 으로 암컷이 수컷보다 약간 무거웠다. 용무게의 변화율은 검정공-1호에서 11%로 가장 낮았으며, 부광콩에서 16%로 가장 높았다. 성충수명은 약 7.8~11.2일로 강낭콩에서 가장 짧았으며, 부광콩에서 가장 길었고, 암컷의 수명이 수컷보다 약간 긴 경향이었다. 엽수분과 용이간, 용무게 및 성충수명과는 유의한 관계가 인정되었다.

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담배거세미나방의 유충에 처리된 살충제 아치사농도가 용기간, 우화율, 성충수명 및 산란에 미치는 영향 (Effects of Sublethal Concentration of Insecticides On the Pupal Duration, Emergence, Adult Longevity and Oviposition of Tobacco Cutworm, Spodoptera litura (Fab.) (Lepidoptera : Noctuidae))

  • 배순도;김현주;홍연규;조현제
    • 한국응용곤충학회지
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    • 제43권2호
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    • pp.175-180
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    • 2004
  • 담배거세미나방의 유충에 처리된 살충제의 아치사농도($LC_{10}$$LC_{30}$)가 용발육, 성충수명 및 산란에 미치는 영향을 조사하였다. 용기간은 무처리의 암컷과 수컷에서 각각 6.9일과 8.0일, 살충제 처리에서 각각 7.2-7.6일과 8.3-8.6일로 무처리보다 살충제 처리에서 길었으나 살충제의 종류 및 아치사농도에 따른 유의한 차이는 없었다. 우화율은 무처리에서 88%, 살충제 처리에서 약 79-95%로 약제처리유무 및 아치사농도 처리에간 뚜렷한 경향이 없었으며, 특히 chlo.fenapyr-bifenthrin 및 ethofenprox처리에서 91.0% 이상의 높은 우화율을 나타내었다. 성충수명은 무처리의 암컷과 수컷에서 각각 7.7일과 7.9일, 살충제 처리에서 각각 7.1-8.4일과 7.7-9.0일로 hexaflumuron-chlorpyrifos의 $LC_{30}$처리에서 가장 길었던 것을 제외하면, 살충제 처리유무 및 농도에 따른 유의한 차이는 없었다. 총 산란수는 무처리에서 1,010개, 살충제 처리에서 778-948개로 살충제 처리유무에 따른 차이는 있었으나, 살충제의 종류 및 농도에 따른 유의한 차이는 없었다. 따라서 담배거세미나방의 용기간 및 산란은 유충에 처리된 살충제의 아치사농도처리에 의해 영향을 받았다.

온도 및 기주조건이 담배거세나방의 용발육, 성충수명 및 산란에 미치는 영향 (Effects of Tempearture and Food Source on Pupal Development, Adult Longevity and Oviposition of the Tobacco Cutworm, Spodoptera litura Fabricius)

  • 배순도;박경배
    • 한국응용곤충학회지
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    • 제38권1호
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    • pp.23-28
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    • 1999
  • 온도(24$^{\circ}C$, 28$^{\circ}C$ 및 32$^{\circ}C$) 및 기주조건이 담배거세나방의 용발육, 성충수명 및 산란에 미치는 영향을 조사하였다. 용화유은 23~88%로 온도가 높을수록 높았으며, 기주별로는 인공사료, 고구마잎, 들깨잎 및 콩잎의 순서로 높았다. 용무게는 0.28~0.40g으로 온도가 낮을수록 약간 무거워지는 경향이었으며, 기주별로는 들깨잎에서 가장 무거웠으나, 그밖의 기주간에는 현저한 차이가 없었다. 용기간은 $24^{\circ}C$, 28$^{\circ}C$$32^{\circ}C$에서 각각 약 14일, 10일 및 7일로 기주에 따른 유의한 차이가 없었다. 우화율은 21~89%로 온도가 높을수록 높았으며, 기주별로는 28$^{\circ}C$$32^{\circ}C$에서 인공사료, 고구마잎, 들깨잎 및 콩잎의 순서로 높았으나, $24^{\circ}C$에서 인공사료, 콩잎, 들깨잎 및 고구마 잎의 순서로 높았다. 성충의 산란전기간은 $24^{\circ}C$, $28^{\circ}C$ 및 32$^{\circ}C$에서 각각 3.2일, 2.8일 및 2.5일로 온도에 따른 차이가 있었으나, 기주에 따른 차이는 없었다. 성충수명은 3.9~6.4일로 온도가 높을수록 짧았으며, 지주별는 인공사료, 고구마잎, 콩잎 및 들깨잎의 순서로 긴 경향이었고, 암컷보다 수컷에서 약간 길었다. 성충의 총 산란수는 803~1,441개로 온도 및 기주간에 변이가 심하였으나, 인공사료보다 천연기주에서 산란수가 현저히 많았다. 난괴당 난수 및 개체당 난괴수도 각각 약74~186개 및 6~14개로 온도 및 기주에 따라 변이가 심하였다.

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Estimation of Hybrid Vigor of Some Egyptian Single Local Hybrids of Mulberry Silkworm, Bombyx mori L.

  • Ghazy, Usama Mohamed Mohamed
    • International Journal of Industrial Entomology and Biomaterials
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    • 제25권2호
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    • pp.147-151
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    • 2012
  • Fifteen races resulted from silkworm breeding program at Sericulture Research Department (SRD) were used for hybridization. Fourteen hybrids were obtained and coded as; Giza C, D, R, S, T, U, A, V, W, P, H, L and Qanater 1, 2. The traits of cocoon weight, cocoon shell weight, pupal weight, cocoon shell ratio, silk productivity, fifth instar duration, total larval duration, number of cocoon per liter and pupation ratio were evaluated. Data were analyzed by using three formulae of heterosis over better, mid and check parent values. Hybrids of Giza V, C, N, Qanater 1 and 2 are promising and could be used in commercial cocoon production. Generally, there are some new hybrids can be exploited in commercial scale. Also, the local races can be evolved using the hybridization, inbreeding and selection program.

Growth performance of the edible mealworm species, Tenebrio molitor (Coleoptera: Tenebrionidae) on diets composed of brewer's yeast

  • Kim, Seonghyun;Park, Ingyun;Park, Haechul;Lee, Heui Sam;Song, Jeong-Hun
    • International Journal of Industrial Entomology and Biomaterials
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    • 제39권2호
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    • pp.54-59
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    • 2019
  • Yellow mealworms (Tenebrio molitor Linnaeus) are very promising insects for the food and feed industry. Because mealworms are in the spotlight as an alternative protein source in the future, it is necessary to develop efficient rearing techniques for mass production. To evaluate the effects of brewer's yeast (BY) on the growth of mealworms, Tenebrio molitor Linnaeus, the mealworms were fed with wheat bran (WB) diets containing different levels of BY (0, 10, 30, 50, and 70%). Larval survival, larval weight, development time, pupal weight and eclosion rate were monitored for 12 weeks. The results showed that mealworms fed on the diets containing 30% and 50% of BY have significantly higher weight gain, specific growth rate and daily weight gain, and lower larval duration than fed the control diet (100% WB) and other BY diets (10% and 70% BY). Larval survival on the diets containing 30% and 50% of BY was higher than on control diet. Pupal weight and eclosion rate were not significantly different among all diets. In conclusion, we suggest feeding the diet containing 30% of brewer's yeast with wheat bran in order to increase the production of mealworms.

담배나방 발육에 미치는 온도의 영향 (Effect of Temperature on Development of Oriental Tobacco Budworm, Helicoverpa assuta Guenee)

  • 한만위;이준호;이문홍
    • 한국응용곤충학회지
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    • 제32권2호
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    • pp.236-244
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    • 1993
  • 온도가 담배나방 발육에 미치는 영향을 알아보기 위하여 18~$33^{\circ}C$ 사이의 7개 온도조건에서 인공사료를 이용하여 광주기 14:10 조건에서 사육하였다. 알, 유충, 용의 발육기간은 전체 발육기간에 대해서 각각 10, 48, 42% 정도를 점유하였다. 발육영점온도는 알, 유충, 용, 전체발육기간(알에서 성충까지)에 따라 각각 8.62, 12.65, 11.64, $11.89^{\circ}C$였다. 평균발육속도를 Sharpe와 Demichele(1977)이 제시한 비선형모델에 적용한 결과 온도에 따른 발육특성을 잘 설명할 수 있는 것으로 나타났으며 ($r^2$=0.993~0.996), 발육기간분포의 특성을 알기 위하여 정규화한 누적발유기간분포를 Weibull분포에 적용한 결과 높은 적합성을 나타내었다($r^2$=0.987~0.999).

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Effects of agricultural byproducts, DDG and MSG, on the larval development of mealworms

  • Kim, Sun Young;Kim, Hong Geun;Lee, Kyeong Yong;Yoon, Hyung Joo;Kim, Nam Jung
    • International Journal of Industrial Entomology and Biomaterials
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    • 제32권2호
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    • pp.69-79
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    • 2016
  • Distillers dried grain (DDG) and makgeolli spent grain (MSG) are agricultural byproducts to produce alcoholic beverage. However, they are known to contain enough nutrients. Mealworm is a promising insect resource for an animal feed ingredient as well as alternative human food. With low cost, DDG and MSG were investigated as a feed ingredient for rearing high quality mealworms. DDG and MSG were mixed with wheat bran and compared to control feed (only wheat bran) for its effects on larval survivorship, larval weight, duration for developmental period, pupation rate, and pupal weight. When DDG added, larval survivorship was reduced to 50~70% compared to the control group. Larvae fed on DDG were heavier from third to sixth week. Especially, larvae with 50% DDG were 28% heavier than the control group at the third week. For the larval period, the 50% DDG group was 11% less than that for the control. The pupal weight for the 30% DDG group was 7% heavier than that for the control group. Pupation rates for all the DDG groups were higher than 90%. When compared to the control, larval survivorship for the 70% MSG group was low, but the 50% and 70% MSG groups were high during the seventh and eighth weeks because of delayed development. After the eighth week, larvae with 70% MSG showed the highest larval weight increase as 9~18% compared to the control group. Except 70% MSG group, all of MSG groups showed more than 90% pupation rates. We confirmed that adding 30~50% of DDG or MSG to conventional wheat bran have a strong potential to replace the conventional wheat bran insect feed for quality insect production.

휴면중인 미국흰불나방 번데기의 성충발육에 미치는 20-hyderoxyecdysone의 영향 (Effects of 20-hydroxyecdysoneon Adult Development of Diapausing Fall webworm (Hyphantria cunea Drury) Pupae)

  • Seung Lyeol Gha;Kyung Saeng Boo
    • 한국응용곤충학회지
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    • 제34권4호
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    • pp.287-294
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    • 1995
  • 미국흰불나방(Hyphantria cunea Drury) 번데기의 휴면 종료에 미치는 탈피호르몬 20-hydroxyecdysone (20-HE)의 처리효과와 또한 호르몬처리로 유기된 휴면 후 성충발육 모습을 정상적인 성충발육과 비교하기 위하여 본실험을 수행하였으며, 그 결과 다음고 같다. 광주기 16L.8D와 $25\pm1^{\circ}C$에서 여러가지 다른 기간동안 저장했던 휴면번데기에 20-HE를 처리했을 때 가장 높은 휴면 종료율은 가장 오랫동안 처리된 군에서 나타났고 45일 동안 저장했던 휴면번데기에서 가장 낮은 종료율을 보였다. 우화에 필요한 기간은 저온($0\pm1^{\circ}C$)처리가간에 반비례하였고, 또한 저온처리기간이 길어질 수록 20-HE에 대한 민감도는 높아졌다. 번데기 휴면기간은 그들이 16L.8D 광조건에 처리되었건 혹은 지속적이 암조건에 저장되었건 간에 거의 같았고, 또한 저온처리없이도 성공적으로 성충이 출현하였다. 정상적으로 무화(휴면없이)하는 번데기의 산소소모율은 전형적인 U자 모양을 보였지만 20-HE에 처리된 휴면 번데기의 산소흡수량은 천천히 증가하다가 처리 후 14일에 급격히 증가하였다. 번데기 휴면은 성충조직을 형성하기 이전에 들어갔으며, 정상적으로 발육하는 번데기나 또는 20-HE에 처리되어 발육하기 시작하는 휴면 번데기 모두에서 성충조직 형성시기와 대사율이 증가하기 시작하는 시기는 일치하였다. 탈피호르몬처리로 발육을 시작한 휴면 번데기의 혈림프와 지방체에서 분리된 단백질종류는 모두 정상적으로 발육하는 번데기의 조직에서와 같았다.

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Studies on Sex-linked Inheritance of Quantitative Characters in Direct and Reciprocal Crosses of Silkworm Bombyx mori L.

  • Reddy, N.Mal;Basavaraja, H.K.;Dar, A.K.;Kumar, N.Suresh;Dandin, S.B.
    • International Journal of Industrial Entomology and Biomaterials
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    • 제7권1호
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    • pp.15-20
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    • 2003
  • The present investigation was carried out to study the possible cause for reciprocal difference in silkworm hybrids. By utilising the polyvoltine race Pure Mysore (PM) and newly evolved breeds (CSR2, CSR5, CSR16 and CSR17), the direct and reciprocal crosses of polyvoltine ${\times}$ bivoltine and also bivoltine hybrids were studied. The hybrids of polyvoltine ${\times}$ bivoltine (direct) are superior to their reciprocal crosses in respect of cocoon yield, cocoon weight and filament length. The reciprocal crosses of polyvoltine ${\times}$ bivoltine are superior to their direct crosses in respect of fecundity and short larval duration. No significant differences were observed in the characters like cocoon shell ratio, raw silk percentage, denier, reelability and neatness in both polyvoltine ${\times}$ bivoltine direct crosses and their reciprocals. The expression of cocoon characters as a function of sex revealed that direct crosses (polyvoltine ${\times}$ bivoltine) showed higher cocoon weight, pupal weight, shell weight and longer filament length in females than the reciprocal crosses (bivoltine ${\times}$ polyvoltine), where as these characters in males were almost the same in both direct and reciprocal crosses, indicating that the sex-linked genetic factor played a more important role. it was clear that difference in cocoon yield observed in reciprocal crosses of polyvoltine ${\times}$ bivoltine was due to the low cocoon and shell weight in females which was turn due to presence of early maturity genes (Lme) linked with sex-chromosome (X) which effect on larvae period of the silkworm. In bivoltine hybrids, i.e., both direct and their reciprocals crosses, all the characters viz., hatching percentage, larval duration, survival, cocoon weight, cocoon shell weight, cocoon shell ratio, raw silk percentage, filament length, denier, reelability and neatness did not show any significant difference (except number of eggs laid by moth) which could account for presence of same maturity genes (Lm) in both direct and reciprocal crosses. it was clear that reciprocal differences occur when the hybrids are prepared from the parental strains with different voltinism.

Life Cycle of the Perilla Leaf Pyralid Moth, Pyrausta panopealis (Lepidoptera: Pyralidae) and Test of Larvicidal Effect of Some Commercial Natural Products

  • Oh, Hyung-Keun;Kim, Won-Kee;Kang, Ah-Rang;Kim, In-Seon;Lee, Hyang-Burm;Kim, Ik-Soo
    • International Journal of Industrial Entomology and Biomaterials
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    • 제21권1호
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    • pp.133-137
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    • 2010
  • The perilla leaf pyralid moth, Pyrausta panopealis Walker (Lepidoptera: Pyralidae), is a serious pest damaging to leaf perilla. In order to establish the life parameters of P. panopealis for eventual purpose of control, the developmental span of each stage was investigated under five temperature regimes ($20^{\circ}C{\sim}30^{\circ}C$). The larval period of P. panopealis was longest as 26.8 days at $20^{\circ}C$ and shortened as temperature goes up to $30^{\circ}C$ as 11.3 days. Survivorship of the larval P. panopealis was the highest at $27.5^{\circ}C$ as 82.5%, whereas that of other temperatures ranged from 40% ($20^{\circ}C$) to 60.0% ($30^{\circ}C$), indicating that the P. panopealis appears to favor somewhat higher temperature. In addition to larval period, the duration of egg, prepupal, and pupal period also were shortened sharply as temperature goes up, whereas the duration of adult stage shortened a maximum of only two days as temperature goes up. After the perilla leaf pyralid moths were successfully stabilized in indoor environment the larvicidal efficacy of ten on-the-market environmentfriendly agricultural materials (EFAMs) that were previously selected from the result of other moth species was tested. Seven of the ten tested showed more than 90% of mortality within 12 hrs and reached nearly up to 100% within 24 hrs, but the remaining three showed less than ~70%.