Ohio Journal of Science: Volume 69, Issue 3 (May, 1969)

Permanent URI for this collection

https://kb.osu.edu/handle/1811/1163

Front Matter
pp 0
Article description | Article Full Text PDF (938KB)

Studies of the World Gyponinae (Homoptera: Cicadellidae) : A Synopsis of the Genus Clinonaria
DeLong, Dwight M.; Freytag, Paul H. pp 129-182
Article description | Article Full Text PDF (3975KB)

Alkaline Phosphatase in the Digestive System of the Desert Locust, Schistocerca Gregaria (Forskal)
Ashrafi, Shahid H.; Naqvi, S. N. H.; Qadri, M. A. H. pp 183-191
Article description | Article Full Text PDF (549KB)

Book Reviews
pp 191-192
Article description | Article Full Text PDF (216KB)

Back Matter
pp 999
Article description | Article Full Text PDF (1201KB)

Browse

Recent Submissions

Now showing 1 - 5 of 5
  • Thumbnail Image
    Item
    Back Matter
    (1969-05)
  • Thumbnail Image
    Item
    Book Reviews
    (1969-05)
  • Thumbnail Image
    Item
    Alkaline Phosphatase in the Digestive System of the Desert Locust, Schistocerca Gregaria (Forskal)
    (1969-05) Ashrafi, Shahid H.; Naqvi, S. N. H.; Qadri, M. A. H.
    Alkaline phosphatase activity was determined in the digestive system of the desert locust, Schistocerca gregaria (Forskal), using ^-nitrophenylphosphate disodium as the substrate. The enzyme has an optimum pH of 7.4 and a linear relationship between its concentration and activity. The Michaelis constant was found to be 1.4 x 10~4M. The enzyme showed a zero order of kinetics, with an incubation period of up to 25 minutes at an optimum temperature of 40°C. The temperature coefficient (Qio) was 1.960 between 5-15°C and 10-20°C, 1.900 between 20-30°C and 25-35°C, and 1.850 between 30 and 40°C. Salt solutions of MnCl2, MgCl2, CuCl2, and CoCl2 activated the enzyme, while Na2HAsO4, Na2HPO4, CuSO4, FeCl2, and CdCl2 inhibited the activity. Maximum activation was produced by 0.01 M MnCl2.
  • Thumbnail Image
    Item
    Studies of the World Gyponinae (Homoptera: Cicadellidae) : A Synopsis of the Genus Clinonaria
    (1969-05) DeLong, Dwight M.; Freytag, Paul H.
    The Genus Clinonaria was described by Metcalf in 1949 and contains large leafhoppers, 10 to 16.5 mm in length. They are all tropical, occurring in Central and South America, and are associated with jungle vegetation. Seventy four species are placed in this genus; twelve, previously described in four other genera, are Scaris picea Walker, Darma bipunctata Walker; Gypona marmorata and G. alboguttata Spangberg; Gypona hebes and G. decorata Fowler; Ponana afinula, P. bicolorata, P. grossa, P. notatula, P. sarana, and P. sulfurea Osborn. The other sixty-two species are described as new species of Clinonaria. The type species of the genus was designated as C. bicolor Metcalf, which is a synonym of P. bicolorata Osborn. Keys are provided for both males and females, and 368 figures are used as an aid in identification.
  • Thumbnail Image
    Item
    Front Matter
    (1969-05)