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测定分析了叶甲科(Chrysomelidae)15种昆虫mtDNA_Cyt b基因部分序列,结果显示,在获得的390 bp序列中,198个核苷酸位点为多态性位点(约占50.8%),序列间碱基差异平均值为18.9%,A T含量为72.7%,碱基转换呈现明显的TC偏向性,颠换主要以TA为主,转换/颠换(R)值为0.8。依据分子数据建立了该15种昆虫的系统发育关系,结果表明:跳甲亚科(Alticinae)和叶甲亚科(Chrysomelinae)的亲缘关系较近,萤叶甲亚科(Galerucinae)与前两者的关系较远。萤叶甲亚科中瓢萤叶甲为最早分化的类群,长跗萤叶甲属(Monolepta)、凹翅萤叶甲属(Paleosepharia)、长刺萤叶甲属(Atrachya)能形成姊妹群。克萤叶甲属(Cneorane)和守瓜属(Aulacophora)的亲缘关系较近。基于蛋白质序列构建的系统树的置信值高于核苷酸序列建立的系统发育树。 相似文献
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A 3-year study was conducted in Colorado (USA) to evaluate the response of the western black flea beetle (WBFB),Phyllotreta pusilla Horn (Coleoptera: Chrysomelidae), to different colored mulches and to determine if there were diurnal differences in the
effect of mulch on their colonization on plants. The plants surrounded by aluminum mulch had the highest number of WBFB compared
with the rest of the treatments in 1999 and 2000, but not in 2002; the black mulch had the lowest number of WBFB in 3 years
of sampling. The highest number of WBFB were observed in the late day (4 p.m.) counting in 1999, whereas none of the treatments
resulted in significant differences among early, mid, and late day counts in 2000 and in 2002.
http://www.phytoparasitica.org posting May 20, 2005. 相似文献
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A model composed of two straight lines describes the relation between overwintering spring adults of Colorado potato beetle
[Leptinotarsa decemlineata (Say)] and potato yield. Potato vines (Solarium tuberosum (L.), cv. ‘Superior’) had a damage boundary of around 5.8 spring adults per plant. However, under conditions favorable for
reproduction, overwintering adults of 0.07 beetles per plant would produce a large population of first-generation larvae that
would reduce considerably the potato yield if not controlled. There is no appreciable seasonal overlapping between adults
and young larvae in the field. Monitoring activities should therefore be directed at the beginning of the season against overwintering
adults and later against first-generation larvae. For summer adults, an action threshold of 10 per plant is proposed. 相似文献
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Cucurbitacins are plant defensive chemicals that attract many species of adapted insect herbivores such as luperine leaf beetles, and they have been employed in traps and toxic baits. Male and female beetles feed avidly on baits containing these compounds, but field trials have revealed that males find them far more attractive than females. A wind-oriented baited sticky trap was designed to evaluate the response of Diabrotica speciosa to cucurbit extracts, by means of a mark–release–recapture experiment. The spatial range of attraction was less than 20 m, and captures were almost exclusively of males (99.91%). Distance attraction for D. speciosa to a point-source of bitter cucurbit juices is probably exclusive to males. These conclusions probably apply to most Diabrotica species, of which many are crop pests. 相似文献
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The chrysomelid beetle Colaspis crinicornis Schaeffer (Coleoptera: Chrysomelidae) occurs primarily in the Great Plains region of the United States. Little is known about the biology and ecology of this species, but over the last decade, it has become increasingly common in the corn, Zea mays L., and soybean, Glycine max (L.) Merrill, agroecosystem of southeastern Nebraska. As part of a larger comprehensive project to understand the natural history and pest potential of this species, laboratory experiments were conducted to study the developmental biology, morphological characters of immature stages, and the effect of adult diet on consumption, longevity, and fecundity. Females readily deposited egg clusters in the soil, and percentage egg hatch was high under laboratory conditions. Larvae and pupae were confirmed to be soil-dwelling stages. C. crinicornis has relatively short egg, pupal, and adult stages with the majority of its life cycle spent in the larval stage. Results of choice and no-choice adult feeding experiments indicate that diets of corn or soybean leaves did not significantly affect consumption, longevity, or fecundity of adult C. crinicornis, suggesting that corn and soybean leaves are similarly suitable food sources for adults. The ability to effectively utilize tissues from very different plant families as adult food sources suggests that C. crinicornis is polyphagous in the field. 相似文献
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Alizèta Sawadogo Estérer Nagalo Souleymane Nacro Mathurin Rouamba Marc Kenis 《Journal of insect science (Online)》2015,15(1)
The flea beetle Aphthona whitfieldi Bryant (Coleoptera: Chrysomelidae) is the main pest of the bioenergy crop Jatropha curcas L. (Euphorbiaceae) in Burkina Faso and several other West African countries. Adults severely defoliate plants, resulting in seedling mortality, poor growth, and low yields. To study the population dynamics of the pest in the Sissili Province of Burkina Faso, 12 sites were monitored weekly during a year and 31 sites were inspected for damage at the peak period of insect abundance. The effect of cropping systems (hedge, intercropping, and monoculture) and surrounding vegetation on population densities of A. whitfieldi was assessed. Beetles were rarely found in the dry season and peaked in the second half of the rainy season. The cropping system did not significantly influence the abundance and attack level. In contrast, the close vicinity of fallow lands seems to increase damage levels. Many aspects of the biology and ecology of A. whitfieldi remain to be investigated before sustainable control methods can be developed. However, this study already allows us to propose recommendations for further research on management. 相似文献
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Five species of flea beetles (Coleoptera: Chrysomelidae) were recorded for the first time in Turkey:Dibolia numidica Doguet,Longitarsus corynthius corynthius (Reiche et Saulcy),L. onosomae (Peyerimhoff),L. pulmonariae Weise andPhyllotreta ganglbaueri Heikertinger. The zoogeographical distribution of the species was reviewed. Among the species,L. onosmae andD. numidica have a limited distribution area in North Africa, and therefore their presence in Turkey is interesting.
http://www.phytoparasitica.org posting July 14, 2004. 相似文献
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昆虫在杂草生物防治中有广阔的应用前景,其中叶甲科Chrysomelidae昆虫发挥了尤为重要的作用。文中综述了叶甲科昆虫在杂草生物防治中的研究与利用,就国际杂草生物防治概况、叶甲科昆虫防治外来杂草的经典项目、国内叶甲输入和输出情况、我国本地叶甲科昆虫在杂草生物防治上的利用以及目前杂草生防存在的问题等方面进行论述。 相似文献