Record Display for the EPA National Library Catalog


Main Title Effects of Ditching on the Mosquito Populations in Some Sections of 'Juncus' Salt Marsh in Carteret County, North Carolina.
Author LaSall, Richard N. ; Knigh, Kenneth L. ;
CORP Author North Carolina Water Resources Research Inst., Raleigh.
Year Published 1973
Report Number UNC-WRRI-73-82; DI-14-31-0001-3316; OWRR-B-027-NC; 11431,; B-027-NC(1)
Stock Number PB-221 589
Additional Subjects ( Culicidae ; Pest control) ; ( Insect control ; North Carolina) ; Abundance ; Swamps ; Salt water ; Vegetation ; Larvae ; Flooding ; Sampling ; Excavation ; Mosquito control ; Carteret County(North Carolina) ; Anopheles atropos ; Anopheles bradleyi ; Aedes sollicitans ; Aedes taeniorhynchus ; Culex salinarius ; Psorophora confinnis
Library Call Number Additional Info Location Last
NTIS  PB-221 589 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 184p
Five areas of irregularly flooded salt marsh were studied to determine effects of ditching on mosquito populations. Principal species were Anopheles atropos, Anopheles bradleyi, Aedes sollicitans, and Aedes taeniorhynchus. Present in lesser numbers were Culex salinarius, and Psorophora confinnis. Data on both plant cover and on the abundance of mosquito larvae showed such wide variation in both ditched and unditched sections that no significant differences between sections could be detected. Percentage of Aedes and Psorophora larvae taken in samples tended to be directly proportional to mean slope of the breeding depression and inversely proportional to its frequency of flooding. Conversely, the relative abundance of Anopheles and Culex species was directly proportional to the frequency of flooding. Relative abundance of species in the ditched sites was more affected by the mean slope, frequency of flooding and the ratio of frequency of flooding/mean slope than in the unditched sites. (Modified author abstract)