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Biology and life table studies of the oriental tobacco budworm, Helicoverpa assulta （Lepidoptera： Noctuidae）, influenced by different larval diets

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Insect Science 2008年第6期15卷 569-576页

作者： Kai-Yun Wang Yong Zhang Hong-Yan Wang Xiao-Ming Xia Tong-Xian Liu College of Plant Protection Shandong Agricultural University Tai'an Shandong Province China Department of Entomology Texas AgriLife Research Texas A&M University System Weslaco TX 78596-8399 USA

Development, survivorship, pupal weight, oviposition, and life table parameters of the oriental tobacco budworm, Helicoverpa assulta Guenée, were evaluated in the laboratory on an artificial diet, pepper （Capsicumfrutescens L.）, and tobacco （Nicotiana tobacum L.）. We found that the average developmental time of immature stages was longest on tobacco （36.2 d）, intermediate on pepper （34.4 d）, and shortest on artificial diet （33.5 d）. Immature survival from egg to pupa varied from 31% on tobacco, 43% on pepper, and 74% on artificial diet. Pupal weight ranged from 197.4 mg/pupa on tobacco, 233.1 mg/pupa on pepper and 253.4 mg/pupa on artificial diet. The average numbers of eggs laid by adults reared as larvae on the artificial diet, pepper, or tobacco were 614, 421 and 334 eggs/female, respectively. Numbers of remaining eggs in ovaries of the adult females reared as larvae on the artificial diet, pepper, or tobacco were 16, 26, and 42 eggs/female, respectively. The longevity of adult females developed from larvae reared on the three diets was not significantly different, whereas the longevity of male adults from the larvae reared on artificial diet was longer （16.8 d） than that for males reared on tobacco （13.8 d） and pepper （13.3 d）. The intrinsic, finite, gross, and net rates of increase were highest for females reared as larvae on artificial diet, lowest for females emerging from larvae reared on tobacco, and intermediate for females emerging from larvae reared on pepper. Generation times and doubling time of H. assulta were shortest for larvae fed artificial diet, intermediate from larvae reared on pepper, and longest from larvae reared on tobacco. We concluded that the artificial diet was the most suitable larval diet ofH. assulta followed by pepper, and tobacco.

关键词： Helicoverpa assulta diets host plants oviposition development life table

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Estimating index of population trend by re-sampling techniques （jackknife and bootstrap） and its application to the life table study of rice leaf roller, Cnaphalocrocis medinalis （Lepidoptera： Pyralidae）

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Insect Science 2008年第2期15卷 153-161页

作者： Fang-Ling Tao Shi-Fan Min Wei-Jian Wu Guang-Wen Liang Ling Zeng Laboratory of Insect Ecology South China Agriculture University Guangzhou Department of Food Science Jiangxi AgriculturalUniversity Nanchang China

Taking a published natural population life table of rice leaf roller, Cnaphalocrocis medinalis （Lepidoptera： Pyralidae）, as an example, we estimated the population trend index, I, via re-sampling methods （jackknife and bootstrap）, determined its statistical properties and illustrated the application of these methods in determining the control effectiveness of bio- agents and chemical insecticides. Depending on the simulation outputs, the smoothed distribution pattern of the estimates of I by delete-1 jackknife is visually distinguishable from the normal density, but the smoothed pattern produced by delete-d jackknife, and logarithm- transformed smoothed patterns produced by both empirical and parametric bootstraps, matched well the corresponding normal density. Thus, the estimates of I produced by delete-1 jackknife were not used to determine the suppressive effect of wasps and insecticides. The 95% percent confidence intervals or the narrowest 95 percentiles and Z-test criterion were employed to compare the effectiveness of Trichogrammajaponicum Ashmead and insecticides （powder, 1.5% mevinphos ＋ 3% alpha-hexachloro cyclohexane） against the rice leaf roller based on the estimates of I produced by delete-d jackknife and bootstrap techniques. At a = 0.05 level, there were statistical differences between wasp treatment and control, and between wasp and insecticide treatments, if the normality is ensured, or by the narrowest 95 percentiles. However, there is still no difference between insecticide treatment and control. By Z-test criterion, wasp treatment is better than control and insecticide treatment with P-value 〈 0.01. Insecticide treatment is similar to control with P-value 〉 0.2 indicating that 95% confidence intervals procedure is more conservative. Although similar conclusions may be drawn by re-sampling techniques, such as the delta method, about the suppressive effect of trichogramma and insecticides, the normality of the estimates can be checked and guarante

关键词： index of population trend life table re-sampling (jackknife bootstrap) riceleaf roller ( Cnaphalocrocis medinalis)

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Effects of temperatures on the development and reproduction of the armyworm, Mythimna roseilinea: Analysis using an age-stage, two-sex life table

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Journal of Integrative Agriculture 2018年第7期17卷 1506-1515页

作者： QIN Jian-yang LIU Yue-qiu ZHANG Lei CHENG Yun-xia LUO Li-zhi JIANG Xing-fu State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences College of Plant Science and Technology Huazhong Agricultural University College of Landscape Architecture Beijing University of Agriculture

The armyworm Mythimna roseilinea（Walker） is a major pest of grain crops in South China. So far little is known about its basic biology and ecology, making prediction of population dynamics difficult. This study examined the relationships of individual development and population growth with temperature based on an age-stage, two-sex life table of M. roseilinea reared on maize in the laboratory at 18, 21, 24, 27 and 30℃. The highest values of net reproductive rate（R_0） and fecundity were observed at 21 and 24℃, respectively. Both the intrinsic rate of increase（r） and finite rate of increase（λ） increased significantly and mean generation time（T） decreased significantly with increasing temperature. M. roseilinea was able to develop, survive and lay eggs at all temperature regimes tested. Development rates of the egg, larval, pupal, as well as the whole pre-oviposition stages had a positive linear relationship with temperature. The calculated development threshold temperatures of egg, larval, pupal, pre-oviposition and total pre-oviposition stages were 13.29, 8.39, 14.35, 7.42, and 12.24℃, respectively, and their effective accumulated temperatures were 63.59, 445.00, 211.11, 89.02, and 698.95 degree-days, respectively. These results provide insight into temperature-based phenology and population ecology of this insect pest and will allow population prediction and management available in the field.

关键词： Mythimna roseilinea life table temperature lower threshold temperature effective accumulated temperature

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life history and life table analysis of the whitefly predator Delphastus catalinae （Coleoptera： Coccinellidae） on collards

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Insect Science 2005年第2期12卷 129-135页

作者： TONG-XIANLIU Vegetable IP Mlaboratory Department of EntomologyTexas Agricultural Experiment StationTexas A&M UniversityWeslacoTexasUSA

The ladybeetle, Delphastus catalinae (Horn), is one of the most commonly usedpredacious natural enemies being commercially reared for controlling whiteflies, including Bemisiatabaci (Gennadius) biotype B (= B. argentifolii Bellows and Perring), on various ornamental andvegetable crops under greenhouse conditions. The development, survivorship, and fecundity of *** feeding on B. tabaci biotype B on collard plants were determined in the laboratory, andthe age-specific life table parameters were analyzed based on the life history data. Developmentaltime was 4.0,1.9,1.1,1.4,5.2, and 5.3 days for eggs, first, second, third, fourth instars, andpupae, respectively, with an average of 18.9 days from oviposition to adult emergence for bothsexes, 19.0 days for females, and 18.8 days for males. Adult longevities averaged 146.6 days forboth sexes, 122.6 days for females, and 170.5 days for males. After an average 4.9 dayspreoviposition period, females laid a mean of 5.6 eggs per day over a 97.0-day period. Netreproductive rate (R_0) and gross reproductive rate (Σm_x) were estimated by life table analysis at276.8 and 325.1, respectively. Generation time (T) and doubling time (DT) were 35.6 and 4.8 daysrespectively, and the intrinsic rate of natural population increase (r_m) was estimated at 0.158, orl= 1.171 for the finite rate of increase. The r_m value of D. catalinae is similar to or higherthan those of the whitefly feeding on most vegetable and ornamental crops, indicating that theladybeetle is capable of regulating populations of B. tabaci biotype B and other whiteflies undergreenhouse conditions.

关键词： coccinellids whiteflies biological control greenhouse life table predation

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THE POSSIBILITY ANALYSIS OF NATURAL POPLAR-BIRCH FOREST RECOVERY TO BROAD-LEAF KOREAN PINE FOREST THROUGH THE METHOD OF life table IN THE XIOAXING'AN MOUNTAINS

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Journal of Northeast Forestry University 1995年第3期6卷 57-60页

作者：王树力池玉杰 Heilongjiang Forest Research Institute P.R. China Northeast Forestry University P.R. China

The basic principle of life table method is deseribed, and the method of tree height instead of tree age in static life table is suggested, and it is also discussed that the possibility of natural poplar -birch forest recover to broad-leaf Korean pine forest on low pitches in the Xiaoxing'an Mountains by this method. If there is no particular situation, Korean pines after high than 5m under natural Poplar-birch forest will basically survive and make their way into dominant callopy accompanied by climax broad-leaf species.

关键词： life table Natural poplar-birch forest Broad-leaf Korean pine forest

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Effect of Verticillium lecanfi on biological characteristics and life table of Serangium japonicum （Coleoptera： Coccinellidae）, a predator of whiteflies under laboratory conditions

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Insect Science 2008年第4期15卷 327-333页

作者： Lazreg Fatiha Zhen Huang Shun-Xiang Ren Shaukat Ali Engineering Research Center of Biological Control Ministry of Education College of Natural Resource and Environment South China Agricultural University Guangzhou China

Effects of entomopathogenic fungus Verticillium lecanii on biological characteristics and life table of Serangiumjaponicum, a predator of whiteflies against five different conidial concentrations （1 × 10^4, 1 × 10^5, 1 × 10^6, 1 × 10^7, and 1 × 10^8 conidia/mL） were studied under laboratory conditions. The developmental periods for all immature stages （from eggs, 1 st, 2nd, 3rd, 4th instar nymph and pupae up to emergence） among the treatments were significantly different when compared to that of control, and the longest development period was observed as treated with 1 × 10^8 spore/mL. However, no significant difference on the percent survival of all immature stages was observed among the treatments and control. Also, there were no significantly different effects of V. lecanii on mean generation time, intrinsic rate, the finite rate of increase and longevity of S. japonicum among the treatments and control.

关键词： biological characteristics life table Serangiumjaponicum Verticillium lecanii

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life table and prey consumption by Propyleajaponica Thunberg(Col.,Coccinellidae) of un-parasitized and Encarsia formosa Gahan(Hym.,Aphelinidae) parasitized Bemisia tabaci(Gennadius)(Hom.,Aleyrodidae) biotype B prey

Life table and prey consumption by Propyleajaponica Thunberg...

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第一届全国生物入侵学术研讨会

作者： Imtiaz Ali Khan State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection(South Campus)Chinese Academy of Agricultural Sciences(CAAS)

Bemisia tabaci(Gennadius)(Homoptera,Aleyrodidae) biotype B has become a major pest, causing serious losses to many agricultural crops *** japonica Thunberg(Coleoptera, Coccinellidae) is an important polyphagous predator of different agricultural pests *** the present study,life table and prey consumption by *** of un-parasitized and Encarsia formosa Gahan(Hymenoptera,Aphelinidae) parasitized *** biotype B prey was determined on fresh tomato leaves as arena of *** was able to develop and reach the adult stage with feeding on *** *** developmental duration of egg,L,L,L,L and pupal stage was 3.6, 2.1,3.0,3.2,3.4,3.3 days for females and 3.4,2.2,2.9,3.0,3.4,3.1 days for males,*** total duration from egg to adult was 18.8 days for females and 18.0 days for *** recorded during embryonic,L,L,L,L and pupal stages was 4.0,3.2,3.2,2.4,3.2 and 5.6%,*** females(58.1 days) lived longer than the males(48.9 days).Fecundity was a mean total number of 542.0 eggs/female,ranging from 475-630 *** results of prey consumption experiments showed that the predator in immature as well as adult stages consumed almost similar number of un-exposed and *** exposed *** eggs and N *** consumed higher number of un-parasitized than the *** parasitized *** N,N,N and pupal *** consumed number of all prey stages increased in the subsequent stages of the predator,where the adult females consumed higher number prey than the males.

关键词： Bemisia tabaci Encarsia formosa life table predation Propyleajaponica

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约翰·戈达德的life table

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考试(高考试题设计版) 2009年第2期 59-59页

作者：翼儿

多年之前的洛杉矶郊区,一个15岁没有见过任何世面的孩子,拟了一个表格,列出了他的梦想清单:到尼罗河、亚马逊河和刚果河探险;登上珠穆朗玛峰、乞力马扎罗山和麦特荷恩山;驾驶大象、骆驼、鸵鸟和野马;探访马可·波罗和亚历山大一世走过的... 详细信息

多年之前的洛杉矶郊区,一个15岁没有见过任何世面的孩子,拟了一个表格,列出了他的梦想清单:到尼罗河、亚马逊河和刚果河探险;登上珠穆朗玛峰、乞力马扎罗山和麦特荷恩山;驾驶大象、骆驼、鸵鸟和野马;探访马可·波罗和亚历山大一世走过的路;主演一部像《人

关键词：戈达德 life table

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Development and Reproduction of Sweet Potato Whitefly Bemisia tabaci (Homoptera;Aleyroididae) on Four Vegetable Crops in Southern Sierra Leone

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Advances in Entomology 2025年第1期13卷 182-199页

作者： Peter Dennis Musa Sahr Tortor Jusu Momoh Lahai Osman Bashir Salam Jalloh Department of Horticulture School of Natural Resources Management Njala University Njala Sierra Leone Department of Crop Protection School of Agriculture and Food Sciences Njala University Njala Sierra Leone

Bemisia tabaci is a polyphagous herbivore that feeds on a wide range of horticultural and ornamental crops cultivated under diverse ecological zones. In Sierra Leone, B. tabaci is found to infest a wide range of vegetable crops by directly feeding on phloem sap thereby inducing physiological disorders, and also serve as a vector to gemini viruses. Invariably the destructive feeding of B. tabaci affects the productivity and aesthetic values of vegetables and other horticultural crops and hence is considered a serious economic pest. A bioassay experiment was carried out by rearing B. tabaci populations on four vegetable crops under controlled laboratory conditions to determine its life table and demographic parameters. Results showed that the intrinsic rate of growth which measures the population size and growth pattern was highest for populations reared on tomato crops with the following values: rm 0.145 female female−1 day−1, the gross reproduction rate (Ro), and finite growth rate λ were highest for population reared on tomato, correspondingly the development period from egg-adult emergence was shortest with a value of 26 d. Conversely, the computed demographical parameters rm, λ and Ro for the population reared on sweet pepper were 0.106 female female−1 day−1 respectively, with a corresponding development period egg-adult emergence as 36d. The computed biological parameters for okra and garden egg varied with intermediary values between tomato and pepper host materials. The survivorship rates were quite significant for the smaller instars (Instars 1-III) with over 80% surviving to pre-pupa and pupa stage for the populations reared for all the test materials. High mortality was noticed for the pre-pupa and pupa stages as their survival rates were significantly low compared to the high survival rates of the smaller instars. Less than 50% of pupae failed to emerge to adults except for populations reared on tomato test materials where 52% emerged to adults. The study

关键词： Bemisia tabaci life table Demographic Parameters Host Plants Biological Attributes Population Dynamics

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Age-stage, two-sex life tables of Bactrocera cucurbitae （Coquillett）（Diptera： Tephritidae） with a discussion on the problem of applying female age-specific life tables to insect populations

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Insect Science 2012年第2期19卷 263-273页

作者： Yu-Bing Huang Hsin Chi Laboratory of Theoretical and Applied Ecology Department of Entomology National Chung Hsing University Taichung Taiwan China

Age-stage, two-sex life tables of the melon fly, Bactrocera cucurbitae （Coquil- let-t）（Diptera： Tephritidae）, reared on cucumber （Cucumis sativus L.）, sponge gourd （Luffa cylindrica Roem） and a carrot medium （mashed Daucus carota L. mixed with sucrose and yeast hydrolysate） were constructed under laboratory conditions at 25 4- loc, 65% 4- 0.5% relative humidity, and a photoperiod 12 ： 12h （L ： D）. The intrinsic rates of increase of B. cucurbitae were 0.144 6, 0.141 2 and 0.068 8 days on cucumber, sponge gourd, and carrot medium, respectively. The highest net reproduction rate was 172 offspring per fly reared on sponge gourd. The mean generation times ofB. cucurbitae ranged from 34 days reared on cucumber to 56 days reared on carrot medium. The life history raw data was analyzed using the traditional female age-specific life table and compared to results obtained using the age-stage, two-sex life table. When the age-specific female life table is applied to an age-stage-structured two-sex population, survival and fecundity curves will be improperly manipulated due to an inability to include variation in preadult development time. We discussed different interpretations of the relationship between the net reproductive rate and the intrinsic rate of increase to clarify possible misunderstanding in the literature.

关键词： Bactrocera cucurbitae Cucumis sativus Daucus carota life table Luffa cylindrica

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