930 resultados para --1854-1932


Relevância:

10.00% 10.00%

Publicador:

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The Old World screwworm fly (OWS), Chrysomya bezziana Villeneuve (Diptera: Calliphoridae), is a myiasis-causing blowfly of major concern for both animals and humans. Surveillance traps are used in several countries for early detection of incursions and to monitor control strategies. Examination of surveillance trap catches is time-consuming and is complicated by the presence of morphologically similar flies that are difficult to differentiate from Ch. bezziana, especially when the condition of specimens is poor. A molecular-based method to confirm or refute the presence of Ch. bezziana in trap catches would greatly simplify monitoring programmes. A species-specific real-time polymerase chain reaction (PCR) assay was designed to target the ribosomal DNA internal transcribed spacer 1 (rDNA ITS1) of Ch. bezziana. The assay uses both species-specific primers and an OWS-specific Taqman MGB probe. Specificity was confirmed against morphologically similar and related Chrysomya and Cochliomyia species. An optimal extraction protocol was developed to process trap catches of up to 1000 flies and the assay is sensitive enough to detect one Ch. bezziana in a sample of 1000 non-target species. Blind testing of 29 trap catches from Australia and Malaysia detected Ch. bezziana with 100% accuracy. The probability of detecting OWS in a trap catch of 50 000 flies when the OWS population prevalence is low (one in 1000 flies) is 63.6% for one extraction. For three extractions (3000 flies), the probability of detection increases to 95.5%. The real-time PCR assay, used in conjunction with morphology, will greatly increase screening capabilities in surveillance areas where OWS prevalence is low.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This family grave is next to the tombstone of Adolf Molling and his wife Henriette (Henny) nee Meyerhof

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Verso: "Listening to new recordings. Berlin 1932"

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Although agriculture generates 16% of Australia's greenhouse gas emissions, it also has the potential to sequester large quantities of emissions through land use management options such as agroforestry. Whilst there is an extensive amount of agroforestry literature, little has been written on the economic consequences of adopting silvopastoral systems in northern Australia. This paper reports the financial viability of adopting complementary agroforestry systems in the low rainfall region of northern Australia. The analysis incorporates the dynamic tradeoffs between tree and pasture growth, likely forest product yields, carbon sequestration and livestock methane emissions in a bioeconomic model. The results suggest there are financial benefits for landholders who integrate complementary agroforestry activities into existing grazing operations at even modest carbon prices.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Digital Image

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Postcard written to Therese Gottschalk nee Molling at Norderney

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Verso: handwritten correspondence

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Hermann (Lazar Hirsch) Judey, born 1878 Riga and died 1959 New York; Joseph (Mitskun) Judey, born 1854 Vilna and died 1931 Berlin

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Digital Image

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Ludwig Levy, Peter W. and Willy Beherends, behind them: Wilma Bo?hammer, Kaethe Krueger, Tomma Thomsen and E?