Predator-prey relationships between sympatric species allow the evolution of defense behaviors, such as honeybee colonies defending their nests against predatory wasps. We investigated the predator-prey relationship between the honeybee (Apis mellifera ligustica) and the European wasp (Vespula germanica) by evaluating the effectiveness of attack and defense behaviors, which have coevolved in th...

Some shallow water benthic foraminifera are able to retain functional chloroplasts (kleptoplasts) from their food source, i.e. diatoms. Here we assessed the functionality of the kleptoplast xanthophyll cycle (XC, i.e. the main diatom short-term photo-regulation mechanism) and we surveyed Haynesina germanica kleptoplast pigment composition over time and at different light regimes. Six common dia...

AIM To identify whether it is the yellow jacket (Vespula germanica) or European hornet (Vespa crabro) venom that induces sensitization in patients with IgE-mediated allergic reaction to the venom from the sting of a European hornet. Since these patients usually have positive skin tests and specific IgE to all vespid venoms, it would be useful to distinguish cross-reactors from non-cross-reactor...

Prey collected by Vespula vulgaris and V. germanica were sampled by intercepting foragers returning to nests at two sites in scrubland-pasture near Hamilton. About 12% of returning foragers carried animal prey and 5% carried wood pulp. The remaining 83% carried no external load. The most common prey item for both species was Diptera, followed by Lepidoptera and Araneae (spiders). Even in simila...

OBJECTIVES This study aimed to investigate the profile of sensitization to silkworm moth (Bombyx mori) and other 9 common inhalant allergens among patients with allergic diseases in southern China. METHODS A total of 175 patients were tested for serum sIgE against silkworm moth in addition to combinations of other allergens: Dermatophagoides pteronyssinus, Dermatophagoides farinae, Blomia tro...

background: to compare the effectiveness of 3 commercial gel bait formulations containing fipronil (goliath ã cockroach gel 0.05% ai), chlorpyrifos-a (clean bait ã gel, 2% ai), and chloropyrifos-b (serpa ã gel 2% ai) against german cock­roaches ( blattella germanica ) when stored at 23°c and 30° c after treatment. methods: laboratory bioassays consisted of placing groups of fifteen cockroaches ...

BACKGROUND Cockroaches are among the medically important pests found within the human habitations that cause serious public health problems. They may harbor a number of pathogenic bacteria on the external surface with antibiotic resistance. Hence, they are regarded as major microbial vectors. This study investigates the prevalence and antibiotic resistance of Gram-negative pathogenic bacteria s...

cockroaches were collected from hospitals, houses and poultry sheds in various parts of isfahan (iran) and identified to species. in total, seven species of cockroaches in seven genera were identified: blatta lateralis, polyphaga aegyptiaca, arenivaga roseni and parcoblatta spp. three species periplaneta americana, blattella germanica and supella longipalpa (blattidae and blattellidae) were mor...

Bu çalışmada, yerel bir diatom toprağı olan BGN-1'in, ergin Alman hamamböceklerine (Blatella gemanica (L.)) karşı beton, seramik ve parke yüzeyler üzerindeki ölümcül etkileri araştırılmıştır. üç farklı yüzey üzerinde, B. germanica erginlerii 6 gün boyunca 2.5, 5, 10 20 g/m2 dozlarda BGN-1 kodlu toprağına maruz bırakıldı. Tüm uygulamalarında kalma süresi dozlarının, erginlerinin ölüm oranlarında...

Juvenile hormone III biosynthesis in vitro by the corpora allata of adult female Bluttellu germanica is precisely correlated with the gonotrophic cycle. Farnesoic acid-stimulated rates of juvenile hormone synthesis are always higher than the corresponding basal rates, and follow the same pattern of cyclic changes during oijcyte maturation. Both basal and farnesoic acid-stimulated rates decline ...