Control of three major bollworm pests of cotton in Pakistan by a single application of their combined sex pheromones     

B. R. Critchley  D. G. Campion  G. G. Cavanagh  D. J. Chamberlain  M. R. Attique 《国际虫害防治杂志》2013,59(4)

Abstract

In the Punjab province of Pakistan, cotton is subject to attack by three major bollworm pests: Pectinophora gossypiella, Earias vittella and £ insulana. Because of the difficulty of controlling these pests once their larvae have penetrated the bolls, early season control is essential. A non‐toxic method is desirable if beneficial insects are not to be destroyed. Tests with a Mitsubishi ‘twist‐tie’ pheromone formulation containing the major components of Pectinophora and the two Earias spp. achieved almost complete trap suppression of all three species for up to eight weeks duration following a single application at the pin‐square stage. Visual observations confirmed a complete lack of moth activity indicating that control by mating disruption was attainable.  相似文献   

Distribution of earthworms and influence of soil properties across a successional sand dune ecosystem in NW England     

Emma J. Chamberlain  Kevin R. Butt   《European Journal of Soil Biology》2008,44(5-6):554

An investigation of earthworms across a sand dune system in NW England examined species distribution and abundance with respect to soil physico-chemical conditions and management. Replicated 0.1 m² quadrats were examined every 50 m along 700 m transects across areas of vegetation succession and samples were then taken every 10 m where earthworms were first encountered. A translocation of Aporrectodea longa assessed the ability of this species to live in soils with a high sand content and laboratory work examined growth, maturation and survival of this species in soils with increasing proportions of sand (0–100%). Nine earthworm species were found on the dunes, but none in yellow dunes where organic matter (OM) content was <1%. Dendrobaena octaedra and Lumbricus rubellus were located 300 m from the strand line in grey dunes with an OM content of 3.9%. Allolobophora chlorotica and Lumbricus castaneus occurred within a wet dune slack at 340 m (OM content 11%). In areas of human disturbance (dune car park), A. longa, Aporrectodea caliginosa and Lumbricus terrestris were present, and in soil below pine trees L. castaneus and L. rubellus were present in litter. Laboratory growth of A. longa demonstrated significant (p < 0.05) increases in growth (2–2.75 g) with 25 and 50% sand compared with 0, 75 and 100% over 24 weeks and a greater rate of maturation. Initial results show earthworm colonisation to be influenced by dune successional stage. Laboratory findings suggested A. longa could exist in higher sand content areas but experimental design needs development. The translocation was unsuccessful. Future investigations could examine soil properties more closely and undertake monitoring on site throughout the year.  相似文献   

Genotypes of Leptospira isolated from Queensland cattle     

BG CORNEY  CS McCLINTOCK  J. COLLEY  JK ELDER 《Australian veterinary journal》1996,73(2):75-76

  相似文献   

Aceria tutipae (Keifer) (Acarina: Eriophyidae) on Lotium spp. in Wales.     

Judith A.  Chamberlain P. E. Evans 《Plant pathology》1980,29(2):99-100

  相似文献   

Another Chain Reaction     

Chamberlain K 《Science (New York, N.Y.)》1946,103(2667):158-160

  相似文献   

Computed tomography diagnosis of eight dogs with brain infarction     

AEH Paul  Z Lenard  CS Mansfield 《Australian veterinary journal》2010,88(10):374-380

Objective Medical records of eight dogs presenting with acute onset of neurological signs and a diagnosis of brain infarction as determined by computed tomography (CT) imaging were reviewed. Design Retrospective single-centre case review Results Ischaemic infarction in the territory of the rostral cerebellar artery was identified in three spaniel-breed dogs. All cerebellar infarcts were non-haemorrhagic. Telencephalic infarcts were identified in five dogs, in the territories of the middle cerebral artery (2/5) and rostral cerebral artery (3/5). One of these dogs had an ischaemic infarction, but all other infarctions appeared haemorrhagic. All dogs were geriatric (≥8 years old), with concurrent medical conditions identified in six dogs. One dog was euthanased after diagnosis because of the severity of its neurological signs and one dog was euthanased as a result of associated renal disease 2 months after diagnosis. Six dogs were alive at least 1 year after diagnosis. Conclusions CT is useful in the diagnosis of cerebrovascular accident in dogs, which can present as a spectrum of images with early changes in attenuation and subtle mass effects detected after infarction. CT is particularly sensitive for detecting haemorrhagic infarction, but under-represent ischaemic and lacunar infarctions when compared with MRI.  相似文献   

THE FUNCTION AND FUTURE OF THE TECHNICAL COLLEGE     

Chamberlain AH 《Science (New York, N.Y.)》1909,29(749):723-729

  相似文献   

Foliar sprays against potato common scab: compounds related to 3,5-dichlorophenoxyacetic acid     

A. H. McIntosh  K. Chamberlain  G. W. Dawson 《Crop Protection》1985,4(4):473-480

In glasshouse tests against the soil-borne disease potato common scab (Streptomyces scabies), foliar sprays (0 · 9 mm) of several compounds inhibited symptom development as effectively as 3,5-D (3,5-dichlorophenoxyacetic acid). These compounds were of two main types: (1) compounds very similar in structure to 3,5-D, viz. 3,5-disubstituted phenoxyacetic acids in which the substituents were dibromo-, di(trifluoromethyl)- or any combination of bromo-, chloro- and iodo- except diiodo-; (2) compounds which could be metabolized to 3,5-D within the plant, viz. 4-(3,5-dichlorophenoxy)butanoic acid, 3,5-dichlorophenoxy-acetamide, 3,5-dichlorophenoxy-N,N-diethylacetamide and 2-(3,5-dichlorophenoxy)ethylamine. No compound of either type was significantly more effective than 3,5-D, and those which were as effective shared its effects on tuber yield, number and shape. About 30 other compounds related to 3,5-D were less effective or ineffective.  相似文献   

Neurochemical modulation of response inhibition and probabilistic learning in humans     

Chamberlain SR  Müller U  Blackwell AD  Clark L  Robbins TW  Sahakian BJ 《Science (New York, N.Y.)》2006,311(5762):861-863

Cognitive functions dependent on the prefrontal cortex, such as the ability to suppress behavior (response inhibition) and to learn from complex feedback (probabilistic learning), play critical roles in activities of daily life. To what extent do different neurochemical systems modulate these two cognitive functions? Here, using stop-signal and probabilistic learning tasks, we show a double dissociation for the involvement of noradrenaline and serotonin in human cognition. In healthy volunteers, inhibition of central noradrenaline reuptake improved response inhibition but had no effect on probabilistic learning, whereas inhibition of central serotonin reuptake impaired probabilistic learning with no effect on response inhibition.  相似文献   

Plant Regeneration from Protoplasts of Trifolium repens and Lotus corniculatus   总被引：1，自引：0，他引：1  

K. Judith Webb  S. Woodcock  D. A. Chamberlain 《Plant Breeding》1987,98(2):111-118

Protoplasts were isolated from leaves of Lotus corniculatus and Trifolium repens and from cotyledons of L. corniculatus. These protoplasts divided and produced colonies. The plating efficiency of protoplasts of both species was improved when agarose was used as a supporting medium. Plants were regenerated more regularly and in larger numbers from colonies of L. carniculatus than T. repens. The use of a culture line of T. repens that had been selected for its response in culture markedly increased the proportion of protoplast-derived cultures which regenerated shoots. One regenerant of T. repens (P6) was analysed for morphological and cytalogical variation. This plant was abnormal and highly aneuploid with a wide range of chromosome numbers.  相似文献