Birds of the Southern Appalachians /

Turbulence measurements over the sea by a tethered‐balloon technique

“…x (Robinson 1966;Chamberlain 1968): <Ufl0> was a rough estimate of the wind at 10 m, usually taken as 0.9 t U z > . The values for CD actually used in Eq.…”

The regular mosquito iridescent virus (RMIV) in the black saltmarsh mosquito, Aedes taeniorhynchus (Wiedemann): production, purification, transovarial transmission, site of entry, development of infec by Stephen Carson Hembree.

“…Viruses are etiologic agents of many diseases of man, of his domestic animals, and of his crops. Arthropods are vectors for many of these and serve also as reservoirs for some diseases of both man and animals (Chamberlain, 1968) and of plants (Maramorosch, 1968) . This necessitates an especially intimate relationship between the disease agents and their vectors Arthropods themselves are susceptible to other viral diseases that are not known to infect either plants or other animals.…”

“…These diseases are of particular interest in consideration of current efforts to find non-chemical means of reducing some arthropod populations. Although the pathogenicity of the viral diseases of arthropods has long been recognized, the realization that many arboviruses and arthropod-transmitted plant viruses are pathogenic to their vectors is relatively recent (Chamberlain, 1968;Maramorosch, 1968) . The relationships between viruses and arthropods are now known to form a symbiotic spectrum ranging from mutual benefit at one extreme to population decimating lethal parasitism at the othe~ (Maramorosch and Jensen, 1963) The viruses of insects can be divided into two groups on the basis of whether the virions are enveloped in protein crystals (occluded) or whether they are not (nonoccluded) (Smith, 1967, p. 8) .…”