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Paper

Written Paper

From:
Library of Antonin Svehla

There is little systematic research on the effect of transgenic maize expressing Bacillus thuringiensis (Bt) toxins on insect survival and the response in vivo of their detoxification enzymes. Results of laboratory bioassays indicate that the whorl leaves of transgenic maize lines G03-2396 and G03-2739 significantly affected the survival of neonate and third instar larvae of Ostrinia furnacali ...

SUBJECT: metabolisme; plante transgenique; fertility; poids; transferases

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

Mango orchards in Pakistan are attacked by the scale insect, Drosicha mangiferae (Hemiptera: Monophlebidae), commonly called the mango mealybug. This insect is univoltine, active from December through May and targets multiple host plants. We used DNA nucleotide sequences to characterize and determine the phylogenetic status of D. mangiferae. Mango mealybugs were collected from several tree spe ...

SUBJECT: pakistan; genotipos; mangifera indica; taxonomy; variacion genetica

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

Life table data of natural enemies are often used to understand their population dynamics and estimate their potential role in the biological control of pests. Macrosiphum euphorbiae is an important pest of several crops and its intrinsic rate of population increase is 0.282 at 22 deg C. The life table parameters (immature mortality, developmental time, sex ratio of emerging adults, fecundity ...

SUBJECT: biological control agents; enemigos naturales; fertility; fertilidad; larvae

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

In order to enhance the mass production of Musca domestica five aspects of its oviposition biology were analyzed. Oviposition substrate and the manner of its presentation, the composition of the diet of the adults, size of the pupae and numbers of flies in a cage were identified as critical. Females preferred to lay eggs on a substrate which was presented within a shelter and with increased li ...

SUBJECT: pupa; fertility; poids; ammonia; attractif

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

Fourteen predatory species of ladybirds (Coleoptera: Coccinellidae) were collected from May to October 2008 from Sorbus aucuparia infested with the scale insect Chionaspis salicis at 31 localities in the Ore Mountains, northern Bohemia, Czech Republic. Chilocorus renipustulatus, usually a rare species, made up 85% of the individuals collected (1,690). Other abundant species were Coccinella sep ...

SUBJECT: variation saisonniere; republica checa; habitats; habitat; harmonia axyridis

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

In large parts of Europe Pardosa spp. (Lycosidae) are among the most abundant wolf spiders in arable fields and potentially important natural control agents of pests. We studied the influence of landscape factors on activity density, adult body size and fecundity of P. agrestis in 29 winter oilseed rape fields in Eastern Austria using pitfall traps. Landscape data were obtained for eight circu ...

SUBJECT: biological control agents; fertility; control de plagas; fertilidad; arable land

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

This study describes the parasitoid species complex associated with seven closely related species of sexual (Siederia rupicollella, S. listerella, Dahlica lazuri, D. charlottae and D. lichenella) and parthenogenetic (Dahlica fennicella and D. triquetrella) Naryciinae (Lepidoptera: Psychidae) in Central Finland. A thorough ecological analysis of all the species of parasitoids recorded was combi ...

SUBJECT: diadegma; parasitoide; parasitism; hote; larvae

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

The effects of three factors operating during pre-emergence development period on some characteristics of drones were studied. Weight of newly emerged drones, length of forewing, length of tibia, length of femur, length and width of basitarsus and number of spermatozoa in drones from colonies in which the workers had access to drone brood (A), the size of brood cells differed (B), or the colon ...

SUBJECT: espermatozoo; couvain; largeur; poids; aile

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

Plant chemical composition is an important determinant of host plant-insect interactions. For many insects sugars are the main factors determining the acceptability of a plant. This study investigated changes in plant chemical composition and differences in sugar composition of different host plants (Citrus limon, Ficus benjamina, Nephrolepis biserrata) induced by the feeding of Coccus hesperi ...

SUBJECT: arabinosa; ficus benjamina; citrus limon; coccoidea; extractos

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]

Paper

Written Paper

From:
Library of Antonin Svehla

This study of the proteins in the silk of the summer and winter cocoons of the horse chestnut leaf miner Cameraria ohridella revealed they can inhibit protease activity. The inhibitory activity of the summer silk was higher against both the fungal proteinase K and bacterial subtilisin than that of the winter silk. The winter silk was more effective in inhibiting proteinase K than subtilisin. F ...

SUBJECT: variation saisonniere; proteine; electrophorese; cocoons; proteases

POSTED TO: European Journal of Entomology (Czech Republic) [1210-5759]