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In a recent paper, V. Michelsen(1988, Systematic Entomology 13: 271–314) revised 18 world species of anthomyiid cone and seed
pests and described a new genus,Strobilomyia gen. n. He consideredS. melaniola of Northeast China to be a synonym ofS. viaria of North America. That they are the same species is not accepted. We compared the morphological characters of male and femaleS. melaniola adults with the close relatives,S. viaria andS. sibirica. We conclude that they are not the same species and that S.melaniola is an independent species. 相似文献
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Ohne Zusammenfassung 相似文献
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板栗作为食药两用植物,富含蛋白质、淀粉、脂肪、B族维生素、维生素C、胡萝卜素等多种营养成分,其皮、叶、花、苞中含有黄酮、多酚、单宁等大量的活性成分。从板栗各部位的形貌结构、化学成分、主要产品以及加工现状进行综述,并对板栗综合利用研究提出了展望,以期完善板栗产业链建设,为板栗高值化开发方向提供参考依据。 相似文献
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This study was carried out to determine the development, survival and reproduction responses of Adalia fasciatopunctata revelierei (Mulsant) (Coleoptera: Coccinellidae) feeding on Hyalopterus pruni (Geoffroy) (Homoptera: Aphididae), using 20, 40, 80, 160 and 250 prey densities. All experiments were conducted at 25±1°C,
60±5% relative humidity, 16:8 light:dark under laboratory conditions. The average daily prey consumption of A. fasciatopunctata revelierei immatures and adults increased with increasing prey densities. Predation was not different for the larval stages at 80, 160
and 250 prey densities. The longevities of adult females were 35.67, 35.33, 49.00, 58.33 and 57.16 days when 20, 40, 80, 160
and 250 H. pruni were provided, respectively. The mean daily and total fecundity of A. fasciatopunctata revelierei increased with increasing prey densities. Females of A. fasciatopunctata revelierei feeding on H. pruni laid 89 eggs at 20 prey density and 301.67 eggs at 160 prey density. The search rate of females was higher than that of
all larval instars; and the search rate of the fourth-instar larvae was higher than that of younger instars. Handling time
decreased with development from larval stages to adult. 相似文献
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经对元江县芒果成熟期的虫害芒果实蝇 2年的系统观察 ,掌握了该虫害的完整生活史和为害特点。元江芒果实蝇 1年发生 6代 ,每年 2个高峰期 ,第 1个高峰期在 4月下旬 ,第 2个高峰期在 7月初至 8月初。成虫产卵于成熟果实的果皮下 ,幼虫在果内取食果肉。在大田上进行果实套袋 ,农药和性诱剂诱杀 ,化学药剂防治试验 ,取得了一定防治效果。在芒果近成熟期连续施诱杀剂 12次 ,可有效地控制芒果实蝇的为害 ,诱杀剂以甲基丁香酚效果为好。 相似文献
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Dr. Alicja Buczek 《Journal of pest science》1996,69(1):23-25
The eggs ofArgas reflexus were splashed with the LiCl and Na2Cr2O7 saturated solutions on the 2nd day after laying and were kept at 25° C and 30% RH.Both examined chemical compounds caused great disturbances in embryogenesis ofArgas reflexus. Under influence of Na2Cr2O7 24.8% eggs died. The LiCl solution appeared to be more harmful on larvae development. 21.8% dead eggs, 11.6% dead embryos, and 8.9% larvae hatched abnormally were observed in these experiments
With one table 相似文献
Zusammenfassung Hemmende Faktoren bei der Embryonalentwicklung vonArgas (Argas) reflexus (Fab.) (Acari, Argasidae)Die Eier vonArgas reflexus wurden am 2. Tag der Embryonalentwicklung bei 25° C und 30% r. L. der. Wirkung gesättigter Lösungen von LiCl und Na2Cr2O7 unterzogen.Beide chemischen Verbindungen verursachten große Störungen der Embryogenesis vonArgas reflexus. Unter dem Einfluß von Na2Cr2O7 starben 24.8% der Eier ab. LiCl erwies sich als schädlicher für die Embryonalentwicklung dieser Zeckenart als Na2Cr2O7.Bei den Experimenten mit LiCl wurden 21.8% Eier, 11.6% Embryos und 8.9% (abnormal geschlüpfte) Larven getötet.
With one table 相似文献
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Dr. Syed Bazlul Huq 《Journal of pest science》1985,58(8):147-149
During a staying at Berlin (West) in 1977/80 studies were conducted on the host-searching, oviposition and host-specificity ofEudorylas subterminalis, a parasitic fly species of Pipunculidae. The visual orientation of the female fly plays undoubtedly a dominant role in searching the host. The female fly usually selects for oviposition only second, third and fourth instar nymphs of the cicadellid hosts. The first instar nymph is rarely attacked, while fifth instar is not accepted at all. The female oviposits within the haemocoel between fourth and fifth tergital region of the host. The fly is unspecific and attacks species of leafhoppers belonging to the family Cicadellidae. The records of Pipunculidae and their hosts in Berlin (West) have also been stated. 相似文献
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Laboratory bioassay of the two fungiMetarbizium anisopliae (Metschnikoff) Sorokin andVerticillium indicum (Petch) Gams was carried out under 26±1 C° and 75±2% R. H. This is the first study on the efficiency of both mycopathogens against the termiteCryptotermes brevis (Walker). Using the highest concentration ofM. anisopliae (43.5 × 105 V.S/ml), percentages of mortality after 4 weeks from treatment of the termiteC. brevis fed on filter paper or wood were 100 and 93.33, respectively. On the same time, the highest concentration of the fungiV. indicum (34.3 × 105 V.S/ml) resulted in the mortality percentages of 83.33 and 70, respectively, fed on filter paper and wood. In general, the data indicated more susceptibility of the termiteC. brevis to the entomopathogenic fungusM. anisopliae than to the fungusV. indicum. M. anisopliae could be considered as a promising potential mycopathogen against the termiteC. brevis. This study, presenting new approach of the alternative dry wood termite control, might be applied in the future. 相似文献
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G. J. Stathas 《Journal of pest science》2001,74(3):57-59
The phenology and natural enemies of Nemolecanium graniformis (Wunn) (Homoptera: Coccidae) in infesting Abies cephalonica, were studied in Greece during 1998?–?1999. This oviparous species develops one generation per year in Central Greece (Attica) and overwinters as 2nd instar nymph. Young adult females appear by the end of July, and the first instar nymphs by the middle of August. By the middle of October, the whole population of the scale is recorded as 2nd instar nymphs. The parasitoids Coccophagus lycimnia (Walker), Coccophagus Westwood sp., Aphycoides Mercet sp. and the predator Exochomus quadripustulatus L. (Coleoptera: Coccinellidae), were observed as natural enemies of the scale. The average fecundity of N. graniformis was 188.4 eggs. 相似文献