Methods of analysis of dithiocarbamate pesticides: a review     

Ashok Kumar Malik  Werner Faubel 《Pest management science》1999,55(10):965-970

This review incorporates a brief introduction to methods for the analysis of dithiocarbamate pesticides followed by a more detailed discussion of individual methods. Determination of dithiocarbamate residues from foodstuffs, water and commercial samples and in various environmental samples using different techniques is a key feature. © 1999 Society of Chemical Industry  相似文献   

Peripheral vestibular disease associated with cryptococcosis in three cats.     

J A Beatty  V R Barrs  G R Swinney  P A Martin  R Malik 《Journal of Feline Medicine and Surgery》2000,2(1):29-34

Peripheral vestibular disease referable to otitis media/interna was the main reason for presentation in three cats with cryptococcosis. In two cats, Cryptococcus neoformans var neoformans was isolated from the tympanic bulla. In the remaining cat, otitis media/interna was considered to be secondary to occlusion of the auditory tube by a nasopharyngeal granuloma associated with a C neoformans var gattii infection. This report emphasises the importance of maintaining an index of suspicion for a fungal aetiology in cats with signs of otitis media/interna, particularly in countries with a high prevalence of cryptococcosis. The presence of C neoformans may be overlooked with potentially fatal consequences where only standard methods for bacterial isolation are used to examine samples obtained from the middle ear.  相似文献   

Long-term development of fish populations in the Římov Reservoir     

M. &#;ÍHA  J. KUBE&#;KA  M. VA&#;EK  J. SE&#;A  T. MRKVI&#;KA  M. PRCHALOVÁ  J. MAT&#;NA  M. HLADÍK  M. &#;ECH  V. DRA&#;TÍK  J. FROUZOVÁ  E. HOHAUSOVÁ  O. JAROLÍM  T. J&#;ZA  M. KRATOCHVÍL  J. PETERKA  & M. TU&#;ER 《Fisheries Management and Ecology》2009,16(2):121-129

Abstract  The inshore fish community of the Římov Reservoir in the Czech Republic was evaluated over 21 years using shore seining at night. The development of the fish community was divided into two separate phases: a highly dynamic and unstable phase dominated by perch, Perca fluviatilis L., was replaced by an extremely stable cyprinid phase dominated by roach, Rutilus rutilus (L.), and bream, Abramis brama (L.). The abundance of both these species oscillated during the cyprinid phase, but with decreasing amplitude. The proportion of piscivorous fish species such as asp, Aspius aspius (L.), pike, Esox lucius L., and pikeperch, Sander lucioperca (L.), increased slightly with time but remained low. The biomass of large Cladocera was negatively correlated with fish biomass only during the perch phase. The Shannon–Weaver index of diversity increased during the fish community succession, mainly because of greater evenness amongst the species.  相似文献