Caffeine-supplemented diet modulates oxidative stress markers and improves locomotor behavior in the lobster cockroach Nauphoeta cinerea.
The effects of caffeine supplementation is well documented in conventional animal models, however, in the lobster cockroaches Nauphoeta cinereathey have not been reported.
Thus, the aim of this study was to investigate the locomotor behavior and biochemical endpoints in the head of the nymphs of N. There was increase in distance travelled, velocity, frequency of rotation and turn angle stereotypical behavior such as circling movementsand this was supported by the representative track plots of the path travelled by cockroaches in the open-field arena. In addition, caffeine supplementation markedly increased total thiol and non-protein thiol glutathione GSH levels in the heads of cockroachesand this was in parallel with significant reduction of lipid peroxidation and free Fe II content.
Taking together, our results indicate that long-term caffeine supplementation may exert preventive effects against oxidative stress and support the use of N. Standard metabolic rate is associated with gestation duration, but not clutch size, in speckled cockroaches Nauphoeta cinerea. Directory of Open Access Journals Sweden. Metabolic rate varies significantly between individuals, and these differences persist even when the wide range of biotic and abiotic factors that influence metabolism are accounted for.
It is important to understand the life history implications of variation in metabolic rate, but
Cucaracha germanica reproduccion asexual de las plantas remain poorly characterised despite a growing body of work examining relationships between metabolism and a range of traits. In the present study we used laboratory-bred families one sire to three dams of Nauphoeta cinerea Olivier speckled cockroaches to examine the relationship between standard metabolic rate SMR and reproductive performance number of offspring and gestation duration.
We show that SMR is negatively associated with female gestation duration. Age at mating is negatively associated with gestation duration for females, and mass is negatively associated with the average gestation duration of the females a male was mated with. In addition to the results in the current literature, the results from the present study suggest that the association between metabolism and life history is more complex than simple relationships between metabolism and various fitness traits.
Future work should consider longitudinal, ontogenetic as well as selective and quantitative genetic breeding approaches to fully examine the associations between metabolism and fitness. Changes in pheromone production, release, mating behaviour and reproductive ability of the gamma-irradiated cockroach Nauphoeta cinerea Olivier.
Mature males of Nauphoeta cinerea produce a sex pheromone 'seducin' which has short-range effects in attracting mature females of the same species.
Exposure of newly-emerged adult males to 3. Bioassay of dichloromethane extracts of males showed that radiation doses 14 krad sufficient
Cucaracha germanica reproduccion asexual de las plantas induce sterility did not affect the ability to produce pheromone but significantly reduced the release of pheromone by inhibiting wing-raising. How to write a personal profile on a hookup site
The sterile-male technique using males sterilized by ionizing radiation in air may not be the method of choice for control of Nauphoeta cinerea.
The work deals with effect of density of population on functional activity of components pf protective system of adult individuals and nymphs of the marble cockroach. The resistance of individuals has been noted to decrease both at individual maintenance and under conditions of overpopulation. Changes in activities of enzymes of antioxidative and phenoloxidase systems are studied ion the insect hemolymph and intestine. Possible consequences of isolation and overpopulation are discussed both for stability and for individual development.
Reversible brain inactivation induces discontinuous gas exchange in cockroaches. Many insects at rest breathe discontinuously, alternating between brief bouts of gas exchange and extended periods of breath-holding. The association between discontinuous gas exchange cycles DGCs and inactivity has long been recognised, leading to speculation that DGCs lie at one end of a continuum of gas exchange patterns, from continuous to discontinuous, linked to metabolic rate MR.
However, the neural hypothesis posits that it is the downregulation of brain activity and a change in the neural control of gas exchange, rather than low MR per se, which is responsible for the emergence of DGCs during inactivity. To test this, Nauphoeta cinerea cockroaches had their brains
Cucaracha germanica reproduccion asexual de las plantas by applying a Peltier-chilled cold probe to the head. Re-warming the brain abolished the DGC and re-established a continuous breathing pattern.
Chilling the brain did not significantly reduce the cockroaches ' MR and there was no association
Cucaracha germanica reproduccion asexual de las plantas the gas exchange pattern displayed by the insect and its MR.
This demonstrates that DGCs can arise due to a decrease in brain activity and a change in the underlying regulation of gas exchange, and are not necessarily a simple consequence of low respiratory demand. What Is a Cockroach Allergy? Cockroaches contain a protein that is an allergen Dietary choice for a balanced nutrient intake increases the mean and reduces the variance in the reproductive performance of male and female cockroaches. Sexual selection may cause dietary requirements for reproduction to diverge across the sexes and promote the evolution of different foraging strategies in males and females.
However, our understanding of how the sexes regulate their nutrition and
Cucaracha germanica reproduccion asexual de las plantas effects that this has on sex-specific fitness is limited.
We quantified how protein P and carbohydrate C intakes affect reproductive traits in male pheromone expression and female clutch size and gestation time cockroaches Nauphoeta cinerea.
We then determined how the
Cucaracha germanica reproduccion asexual de las plantas regulate their intake of nutrients when restricted to a single diet and when given dietary choice and how this affected expression of these important reproductive traits. Pheromone levels that improve male attractiveness, female clutch size and gestation time all peaked at a high daily intake of P: This is surprising because female insects typically require more P than males to maximize reproduction.
The relatively low P requirement of females may reflect the action of cockroach endosymbionts that help recycle stored nitrogen for protein synthesis. When constrained to a single diet, both sexes prioritized regulating their daily intake of P over C, although this prioritization was stronger in females than males. When given the choice between diets, both sexes actively regulated their intake of nutrients at a 1: C ratio did not overlap exactly with the intake of nutrients that optimized reproductive trait expression.
Despite this, cockroaches of both sexes that were given dietary choice generally improved the mean and reduced the variance in all reproductive traits we measured relative to animals fed a single diet from the diet choice pair. This pattern was not as strong when compared to the single best diet in our geometric array, suggesting that the relationship between nutrient balancing and reproduction is complex in this species.
Bella Almillátegui y Gina Prestán...
Vectorial Potential of Cockroaches in Transmitting Parasites of Cockroaches are among the most notorious pests of premises, they Bacterial of cockroaches in relation to urban. Cockroaches probably cleaned up after dinosaurs.
Full Text Available Dinosaurs undoubtedly produced huge quantities of excrements. But who cleaned up after them? Dung beetles and flies with rapid development were rare during most of the Mesozoic. Candidates for these duties are extinct cockroaches Blattulidae, whose temporal range is associated with herbivorous dinosaurs.
An opportunity to test this hypothesis arises
Cucaracha germanica reproduccion asexual de las plantas coprolites to some extent extruded from an immature cockroach preserved in the amber of Lebanon, studied using synchrotron X-ray microtomography. Because fungal pre-processing can be excluded based on the presence of large particles combined with small total amount of wood and absence of damages on wood, the likely source of wood are herbivore feces.
Smaller particles were broken down biochemically in the cockroach hind gut, which indicates that the recent lignin-decomposing termite and cockroach endosymbionts might have been transferred to the cockroach gut upon feeding on dinosaur feces. Dinosaurs undoubtedly produced huge quantities of excrements. Candidates for these duties are extinct cockroaches Blattulidaewhose temporal range is associated with herbivorous dinosaurs.
Static electric fields modify the locomotory behaviour of cockroaches. Static electric fields are found throughout the environment and there is growing interest in how electric fields influence insect behaviour. Here we have analysed the locomotory behaviour of cockroaches Periplaneta americana in response to static electric fields at levels equal to and above those found in the natural environment.
Walking behaviour including velocity, distance moved, turn angle and time spent walking were analysed as cockroaches approached an electric field "Cucaracha germanica reproduccion asexual de las plantas" in an open arena, and also when continuously exposed to an electric field. On approaching an electric field boundary, the greater the electric field strength the more likely a cockroach would be to turn away from, or be repulsed by, the electric field.
Cockroaches completely exposed to electric fields showed significant changes in locomotion by covering less distance, walking slowly and turning more often. This study highlights the importance of electric fields on the normal locomotory behaviour of insects. Cockroaches Blattaria of Ecuador-checklist and history of research. Cockroaches are an understudied group and the total number of described taxa increases every year.
The results indicate that further research on the cockroach fauna of Ecuador as well as determination of museum collections from this territory is needed. Modelling active antennal movements of the American cockroach. Here we report on an integrated experimental and computational approach to investigate how sensory information affects antennal movements. We present a modelling approach to characterise the relationship between antennal searching movement of the American cockroach Periplaneta americana Cockroach antennae are multimodal sensory appendages engaging
Cucaracha germanica reproduccion asexual de las plantas active olfactory and tactile sensing.
They are involved in unisensory behaviours such as chemotaxis, thigmotaxis, obstacle negotiation and tactile orientation. Studies of multisensory capabilities mediated by the antennae are however Botrytis cinerea als parasiet van vlas. After some introductory words on flax, different forms of the parasite Botrytis cinerea Pers.
Use of differences in production of organic acids as done by van Beyma Thoe Kingma were not a satisfactory distinction between formae lini of Botrytis.
The M, Sc and Sp growth forms. American cockroaches are an important source of household allergens in tropical and semitropical climates. To determine which outdoor niches produce American cockroachestraps were placed at 40 homes in New Orleans "Cucaracha germanica reproduccion asexual de las plantas" collect nymphs.
Nymphs were collected from the sewers, yards, and within the homes themselves. To compare sewers and yards as sources of cockroaches entering homes, adult cockroaches were collected, marked, and released into yards and sewers.
No sewer-released cockroaches were collected in homes. Cockroaches released into yards were collected in the homes, suggesting that yards, rather than sewers, are a more important source niche. A field trial applying boric acid granules to the yard was performed in an effort to reduce entry of cockroaches. There was a significant reduction in the cockroach antigen collected in intervention homes compared with controls. Characterization of Botrytis cinerea isolates from chickpea: DNA polymorphisms, cultural, morphological and virulence characteristics.
Suresh Pande, Mamta Sharma, G.
Life style of people and surveillance of management related to cockroaches in Southern Punjab, Pakistan. Cockroaches are the major household pests which prefer humid areas for habitation i. Cockroaches are responsible for transmitting microorganisms like pathogenic bacteria, virus and fungi. Some examples of common bacterial diseases of human beings transmitted by cockroaches are Pasteurellapestisand bubonic plague; Shigellaalkalescensand dysentery; Staphylococcus aureusand boils and abscesses; Shigel There are more asthmatics in homes with high cockroach infestation.
Full Text Available Although asthma has been commonly associated with sensitivity to cockroachesa clear causal relationship between asthma, allergy to cockroaches and exposure levels has not been extensively investigated.
The objective of the present study was to determine whether asthma occurs more frequently in children living in homes with high cockroach infestation. The intensity of household infestation was assessed by the number of dead insects after professional pesticide application. Blattella germanica and Periplaneta americana were the species found in 96% of Incidencia de infecciones quiescentes de Botrytis cinerea en flores y . two species differ in mating behaviour and the ability to produce asexual spores.
más susceptibles, especialmente en los sistemas de reproducción vegetativa.
Cucaracha germanica reproduccion asexual de las plantas aseverar aseverativa aseverativo asexual asfa`ltica asfa`ltico cucar cucaracha cucarachera cucarachero cucarda cucarro cucayo cuchar cuchara gerifalco gerifalte germa`n germa`nica germa`nico germana germanesca planga plani`metro planicie planimetri`a planisferio plano planta plantacio`n.
tráfico biodiversidad; bosques tropicales; biodiversidad; coral; embriones; reproducción asexual; reproducción sexual biodiversidad” biodiversity biodivesidad.
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