Longevity, or life histories, of leafhopper species on virus-infected and on healthy
      plants

Severin, H

Longevity, or life histories, of leafhopper species on virus-infected and on healthy plants

Author

Henry H. P. Severin

Author Affiliations

Henry H. P. Severin was Entomologist in the Experiment Station.

Publication Information

Hilgardia 17(3):121-137. DOI:10.3733/hilg.v17n03p121. October 1946.

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Abstract

Abstract does not appear. First page follows.

Introduction

In discussing the effect of the virus on the insect vector, (Leach (1940))3 has suggested that the question of whether a virus-infected plant is a more favorable host plant than a healthy plant, has been given little attention in virus studies.

(Carter (1939)), working with yellow-spot of pineapple, found that infected weeds of Emilia sonchifolia DC maintain, on an average, higher populations of onion thrips, Thrips tabaci Lind., than do healthy plants. He concluded that diseased plants may persist for a longer time, with a mass of curled leaves affording satisfactory shelter for the vector, than do healthy plants which grow rapidly, mature, and die.

It is a well-known fact among entomologists who have carried on field investigations with the beet leafhopper, Eutettix tenellus (Baker), that when sugar beets are harvested, the adults fly to other food plants, and a high mortality occurs with the change in host plants. During the 1925 outbreak of the pest, and after the beet tops became dry, enormous numbers of leafhoppers were found in bean fields (Severin and Henderson, 1928), and dead adults were commonly found with their mouth parts inserted in the bean leaves. Tomato plants are favorable host plants of the curly-top virus, but are unfavorable food plants of the beet leafhopper. The decrease in longevity of the males and females on tomato plants has been discussed in a previous paper (Severin, 1928).

Literature Cited

Carter W. Populations of Thrips tabaci, with special reference to virus transmission. Jour. Animal Ecology. 1939. 8(2):261-71. DOI: 10.2307/1234 [CrossRef]

Kunkel L. O. Studies on aster yellows. [Reprinted from Amer. Jour. Bot. 1926. 13:646-705. 1926.] Boyce Thompson Inst. Contrib. 1: 181-240 DOI: 10.2307/2435474 [CrossRef]

Kunkel L. O. Celery yellows of California not identical with the aster yellows of New York. Boyce Thompson Inst. Contrib. 1932. 4:405-14.

Leach J. G. Insect transmission of plant diseases. 1940. New York, N. Y.: McGraw-Hill Book Company. 615p.

Severin H. H. P. Minimum incubation periods of causative agent of curly leaf in beet leafhopper and sugar beet. Phytopathology. 1921. 11(10):424-29.

Severin H. H. P. Transmission of tomato yellows, or curly top of the sugar beet by Eutettix tenellus (Baker). Hilgardia. 1928. 3(10):251-75. DOI: 10.3733/hilg.v03n10p251 [CrossRef]

Severin H. H. P. Yellows disease of celery, lettuce, and other plants, transmitted by Cicadula sexnotata (Fall.). Hilgardia. 1929. 3(18):543-83. DOI: 10.3733/hilg.v03n18p543 [CrossRef]

Severin H. H. P. Transmission of California aster and celery-yellows virus by three species of leafhoppers. Hilgardia. 1934. 8(10):339-63. DOI: 10.3733/hilg.v08n10p337 [CrossRef]

Severin H. H. P. Potato naturally infected with California aster yellows. Phytopathology. 1940. 30(12):1049-51.

Severin H. H. P. Infection of perennial delphiniums by California aster-yellows virus. Hilgardia. 1942. 14(8):411-30. DOI: 10.3733/hilg.v14n08p411 [CrossRef]

Severin H. H. P. Evidence of nonspecific transmission of California aster-yellows virus by leafhoppers. Hilgardia. 1945. 17(1):21-59. DOI: 10.3733/hilg.v17n01p021 [CrossRef]

Severin H. H. P., Henderson C. F. Some host plants of curly top. Hilgardia. 1928. 3(13):339-93. DOI: 10.3733/hilg.v03n13p339 [CrossRef]

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Fungicidal corm dips for gladiolus

Effect of seed piece spacing on the production of sweet potato transplants

Thrips control on nectarines

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Cotton price policy and foreign production

A progress report: Concentrate spraying controls pests in deciduous fruit and nut crop tests

Late plantings reduce yellows virus infection, improve beet yields and sugar production at Davis

Nematocides for use on alfalfa

Transmission of California aster-yellows virus by the first reported leafhopper vector in Gyponinae

Taxonomy, distribution, and food plants of Gyponana hasta, a leafhopper vector of California aster-yellows virus