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오리엔탈과실파리의 유충과 용에 대한 저온별 사망소요일수
최경산,안정준,고상욱,Shaw-Yhi Hwang 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.04
오리엔탈과실파리는 대만 우펑에서 채집된 후 누대 사육된 개체들로, 저온에서의 유충과 용의 100% 사망에 필요한 소요일수를 조사하였다. 시험기간 중 실측된 온도는 –4.7, -3.4, -1.0, 0.9, 3.9, 5.8, 7.9도였다. 실험은 시간(일 단위)별로 저온에 처리하였고, 이후 상온으로 이동시켜 개체의 사망여부를 조사하였다. 노출 시간별로 3반복으로 실험하였고, 반복당 20~30 개체를 사용하였다. 각 온도별 유충의 100% 사망소요일수는 1, 3, 7, 6, 10, 10, 34일이었고, 용의 경우 0.25, 4, 9, 7, 10, 18, 30일 이었다.
Ching-Wen Tan,Shaw-Yhi Hwang,Ju-Che Lo,Jitendra Yadav,Kaliova Tavou Ravuiwasa 한국응용곤충학회 2011 Journal of Asia-Pacific Entomology Vol.14 No.3
Defensive proteins, such as polyphenol oxidase (PPO) and trypsin inhibitor (TI), are induced by herbivore wounding and exogenous methyl jasmonate application in various plant species. This study was conducted to measure induction of PPO and TI in radish, sweet pepper, tomato, and water spinach plants following herbivore wounding (I), methyl jasmonate application (M), and a combination of the two treatments (M+I). The effect of induced responses was also examined against third instar Spodoptera litura Fab. PPO activity was induced in radish by treatment I only; in sweet pepper, by treatments I and M; in tomato, by treatments I, M,and M+I; and in water spinach, by treatments M and M+I. The activity of TI was enhanced 1.2–1.4-fold in radish, sweet pepper, and tomato by M and M+I treatments, whereas in water spinach, it was enhanced 1.2-fold by all 3 treatments. The relative growth rate (RGR) of S. litura was reduced by 53% on radish plants following M treatment only. It was reduced by 37% and 42% on sweet paper plants following M and M+I treatment, respectively. RGR was significantly reduced on test tomato plants following I, M, and M+I treatments. The RGR of S. litura was unaffected on water spinach plants following any treatment. Collectively,the results of this study indicated that induction of plant defensive proteins in response to S. litura feeding or exogenous methyl jasmonate application varied among plant species, which further affected the induced plant resistance to the caterpillars.
Sing-Ying Song,Ching-Wen Tan,Shaw-Yhi Hwang 한국응용곤충학회 2012 Journal of Asia-Pacific Entomology Vol.15 No.4
Host-range and host-specificity tests were performed with Cybocephalus flavocapitis T. R. Smith (Coleoptera:Cybocephalidae) and Cybocephalus nipponicus Endrödy-Younga (Coleoptera: Cybocephalidae), two biological control candidates against the invasive cycad aulacaspis scale, Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae). Seventeen native scale species plus the invasive A. yasumatsui scale were tested in growth chambers using nochoice tests and hosts suitable for each of the two predatory beetles. The results revealed that the two Cybocephalus beetles, one imported species from Thailand and one native species, both fed on relatively similar scale prey species. Additionally, the adult beetles of these two species oviposited only on Diaspididae scales. The results showed that both Cybocephalus beetles may share a similar host niche in Taiwan
Jeong Joon Ahn,Ana Claiza Samayoa,Kyoung San Choi,Yu-Bing Haung,Shaw-Yhi Hwang 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.04
The oriental fruit fly is a major polyphagous insect pest with a worldwide distribution. We investigated the development time, survivorship, longevity and fecundity of B. dorsalis at six different temperatures. We applied the computer programs – TWOSEX-MSChart and TIMING-MSChart - to analyze our data. We obtained the population parameters – adult preoviposition period (APOP), total preoviposition period (TPOP), oviposition days, eggs per reproductive female, first age of survival rate <50%, proportion of male and female individuals, propoortion of N-type individual, and life table parameters (net reproductive rate, intrinsic rate of increase, finite rate of increase, and mean generation time) - and population projection using two computer programs.
Jeong Joon Ahn,Ana Claiza Samayoa,Kyoung San Choi,Yun-Shiuan Wang,Sangwook Koh,Yu-Bing Haung,Shaw-Yhi Hwang 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
The oriental fruit fly is a major polyphagous insect pest with a worldwide distribution. The effects of temperature on stage-specific development were investigated at eight constant temperatures (13.0, 14.4, 16.2, 19.5, 23.8, 27.7, 31.8 and 34.8℃). Stage-specific lower developmental thresholds and thermal constants were determined using linear regression. The lower and higher temperature threshold (TL and TH) were estimated using the Sharpe-Schoolfield-Ikemoto (SSI) model. The daily adult emergence frequency of B. dorsalis was estimated in relation to adult age and temperature. Thermal performance was compared among B. dorsalis populations from different locations in Taiwan.