Identifying cockroach (Order: Blattodea) populations is important to understanding the ability of surrogate species indirectly affecting humans by their ability to vector disease-causing organisms including bacteria. These interactions may have potentially deleterious health consequences on animal and/or human populations. In this study, American cockroaches, Periplaneta americana were sampled ...

Cadmium (Cd) is highly toxic to all organisms. Soil contamination by Cd has become an increasing problem worldwide due to the intensive use of Cd-containing phosphate fertilizers and industrial zinc mining. Phytolacca americana L. is a Cd hyperaccumulator plant that can grow in Cd-polluted areas. However, the molecular basis for its remarkable Cd resistance is not known. In this study, the effe...

PREVIOUS studies in this series (Gunn, 1933, 1934) have dealt with certain aspects of the physiology of the common black beetle, Blatta orientate. The present paper is a comparison of that and two other exotic native species of cockroaches. The smallest of the three, Blatella germanica, is found in hotel kitchens, hospitals and public houses, and most rarely in private houses. Development from ...

Methods Blood samples were collected from 37 asthmatics patients and 60 unrelated normal individuals with informed consent. The DNA was isolated from PBL by using a salting out technique. SNPs were selected from dbSNP: http://www.ncbi.nlm.nih.gov/SNP/. Nine VDR polymorphisms were genotyped: FokI (rs2228570), Apal (rs7975232), BsmI (rs1544410), TaqI (rs731236), rs703842, rs4516035, rs 2248098, r...

The antimicrobial activity and minimum inhibitory concentration ( MIC) of various plant extracts in different solvents such as ethanol (98%), hexane (99%) and distilled water of plants traditionally used as medicines as Bidens pilosa L., Bixa orellana L., Cecropia peltata L., Cinchona officinalis L., Gliricidia sepium, Jacaranda mimosifolia, Justica secunda Vahl., Piper pulchrum, P. paniculata ...

Partial migration, whereby a proportion of the population migrates, is common across the animal kingdom. Much of the focus in the literature has been on trying to explain the underlying mechanisms for the coexistence of migrants and residents. In addition, there has been an increasing number of reports on the prevalence and frequency of partially migratory populations. One possible explanation ...

Fabrication and characterization of abrupt TiO2–SiOx core-shell nanowires by a simple heat treatment Alena Folger,1 Julian Kalb,2 Lukas Schmidt-Mende,2 and Christina Scheu,1,3,a 1Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, 40237 Düsseldorf, Germany 2Department of Physics, University of Konstanz, P.O. Box 680, 78457 Konstanz, Germany 3Materials Analytics, RWTH Aachen Universi...

Plant pathologist George Zentmyer, Professor Emeritus in the Riverside branch of the University of California, has devoted much of his life to the benefit of avocado growers worldwide. He is widely known in our industry, respected and revered. Dr. Zentmyer has for forty-eight years enlightened members of the California Avocado Society through his annual contributions to the Yearbook. In this ar...

GABA-receptor-operated chloride ion channels are widely distributed on membranes of insect nervous tissue (for a review, see Sattelle, 1990). For example, in the cockroach Periplaneta americana radioligand binding (Lummis and Sattelle, 1986), autoradiography (Lummis and Sattelle, 1985) and GABA-activated ^Cl flux (Wafford et al. 1987) studies have demonstrated the presence of GABAoperated chlor...