Microsomal fractions were isolated from midguts of western spruce budworm larvae and rat liver. The microsomal preparations were then assayed for cytochrome P-450 content and aldrin epoxidase activity. Both microsomal preparations showed distinct spectrum of cytochrome P-450. Relative to protein content, the cytochrome P-450 content of midguts of western spruce budworm was lower by 7 — 9 times ...

The study was aimed to determine the concentrations of organochlorine pesticides (OCPs) in bovine milk (both branded and unbranded) collected from in and around Tiruchirappalli city, Southern India. The results of the present investigation indicated that these milk specimens were found to be contaminated with 7 different pesticides. Mirex (higher incidence), Heptachlor, o,p’-DDD, o,p’DDE, Aldri...

Dieldrin and DDE are environmental metabolites of the organochlorine pesticides aldrin DDT, respectively. During pregnancy, these chemicals can quickly infiltrate through placental barrier, accumulate in amniotic fluid fetus, act as endocrine disruptors (EDs). The aim this study was to investigate effect dieldrin their parental substances at concentrations 1 10 ng/ml on secretion PGE2 PGF2α fro...

1 In his book, Men From Earth , Buzz Aldrin provides a broad overview of space history leading up to his moon landing on Apollo 11. The book begins with the launch of the first V-2 rocket by Werhner von Braun’s German rocket team at Peenemunde and progresses systematically through both the American and Soviet space missions. In contrast to many of the astronaut autobiographies, Aldrin’s book is...

Investigaciones sobre toxicidad ambiental por pesticidas se han realizado principalmente en mamíferos terrestres, pero existe poca información plaguicidas organoclorados murciélagos. Teniendo cuenta el papel funcional de este grupo varios procesos ecosistémicos como insectívoros, frugívoros y polinizadores, su afectación puede estar causando un impacto negativo la salud los ecosistemas naturale...

B 1963 and 1979, the carcases of 341 Sparrowhawks Accipiter nisus and 616 Kestrels Falco tinnunculus were examined at Monks Wood Experimental Station, Cambridgeshire, to find the cause of death. The carcases were sent in by members of the public, in response to advertisements in national bird journals. All carcases were requested, irrespective of region and form of death. The main objective was...

Using gas chromatography—electron capture detector protocol, pesticide residue levels on four common vegetables (cabbage, carrot, lettuce, and tomatoes) consumed in Ho Municipal, Ghana, were investigated. A total of 5 kg each the randomly sampled triplicate from three different markets. Organochlorine pesticides, including residues γ-HCH, δ-HCH, heptachlor, aldrin, p, p’-DDT, o, p’-DDT p’-DDE d...

As the single most important pest of field corn, Zea mays L., throughout most of the Corn Belt, the western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), has undergone repeated selection for resistance to a variety of insecticides that persist widely among Nebraska populations. In this study, we used 11 microsatellite markers to genotype two populations with...