| mosquito and arbovirus activity during 1997-2002 in a wetland in northeastern mississippi. | the species composition and population dynamics of adult mosquitoes in a wetland near iuka, ms, were analyzed over a 6-yr period (1997-2002) and reverse transcription-polymerase chain reaction (pcr) detection rates of arboviruses determined during five of those years. blood meals of three likely vector species were identified using a pcr-based method that allows identification of the host to species. culex erraticus (dyar & knab) composed 51.9% of the population during the 6-yr period with 295 f ... | 2004 | 15185956 |
| perfluorinated compound concentrations in great blue heron eggs near st. paul, minnesota, usa, in 1993 and 2010-2011. | a great blue heron (ardea herodias) colony on pig's eye island on the mississippi river near st. paul, minnesota, usa, is located near several potential perfluorinated compound (pfc) sources. the pfc concentrations in great blue heron eggs reported from a 1993 collection from the pig's eye colony were among the highest measured in bird eggs worldwide. the objective of this investigation was to determine whether pfc concentrations in great blue heron eggs at the pig's eye colony have changed sinc ... | 2013 | 23378367 |
| organochlorine residues in young herons from the upper mississippi river-1976. | chicks of great blue herons (ardea herodias) from four heronaries located near south st. paul, royalton, and wabasha, minnesota, and la crosse, wisconsin, were analyzed for organochlorines, highest mean wet-weight concentrations, 6.43 ppm pcbs. 1.31 ppm dde, and 1.90 ppm sigma ddt, were found in the south st. paul chicks. among chicks from the other three heronries, most levels were similar, but were significantly lower than levels in south st. paul chicks. lowest mean organochlorine levels, 0.3 ... | 1979 | 119945 |