Electrophysiological studies in Drosophila melanogaster and Periplaneta americana have found that the receptor current in their microvillar photoreceptors is generated by two light-activated cationic channels, TRP (transient receptor potential) and TRPL (TRP-like), each having distinct properties. However, the relative contribution of the two channel types to sensory information coding by photo...

L. Ocorrência de dois casos autóctones de leishmaniose tegumentar americana no bairro do Caju, Município do Rio de Janeiro, Brasil. An Bras Dermatol. 2014;89:848-50. 3. Benício E, Cordeiro M, Monteiro H, Saboia Moura MA, Oliveira C, Nunes Gadelha EP, et al. Sustained presence of leishmaniasis in urban Manaus, the largest human settlement in the Amazon. Am J Trop Med Hyg. 2015;93:1208-13. 4. Sou...

The expansion of C(3) shrubs into C(4)-dominated tallgrass prairies represents a fundamental shift in growth-form dominance accompanied by changes in resource acquisition and use. We assessed these changes by comparing the ecophysiological traits of the dominant C(4) grass Andropogon gerardii, with traits of three C(3) invasive shrub species, Cornus drummondii, Prunus americana, and Rhus glabra...

Interspecific competition determines the invasive capability of alien plants. Phytolacca americana, one most destructive plants in China, was first discovered and recorded China 1935. Since its arrival, rapid expansion species has driven out a native congener, acinosa. In this study, we assessed competitive interaction P. americana acinosa pot experiment at Yunnan University. Our results indica...

The presence of Gram-negative bacteria in cuticle and alimentary tract of cockroaches collected from four selected areas of Dhaka city was investigated. Using detection key, a total of 12 cockroaches were identified as Periplaneta americana (58.33%), Blattella germanica (33.33%) and Blatta orientalis (8.33%). From these three species 54 different bacterial isolates were obtained. Out of them, 3...

Periplaneta americana is a notorious urban pest prevalent in human habitats; very little is known about its chemosensory mechanism. Employing the advanced next-generation sequencing technique, in the present study, we conducted transcriptome sequencing and analysis of the antennae of the adult males and females as well as their mouthparts using an Illumina platform. This resulted in the discove...

Phenotypic plasticity in behavior induced by high rearing density is often part of a migratory syndrome in insects called phase polyphenism. Among locust species, swarming and the expression of phase polyphenism are highly correlated. The american grasshopper, Schistocerca americana, rarely swarms even though it is closely related to the swarming Old World desert locust, S. gregaria, as well as...

Microencapsulation using extrusion and emulsion techniques was prepared for Bifidobacterium longum protection against sequential exposure to simulated gastric and intestinal juices, refrigeration storage and heat treatment. Eleutherine americana was used as the co-encapsulating agent. Hydrolysis of E. americana by gastric and intestinal juices was also determined. E. americana and its oligosacc...

background: although cockroaches are mechanical vector of many pathogens, still biological transmission of pathogens via these insects is controversial. more covenant immune defense in the hemolymph of cockroaches may take this ad­vantage to block any adaptation of pathogens regarding to biological transmission. lectin molecules in hemolymph of in­sects play as mediators of nonself recognition,...