Ohio Journal of Science: Volume 69, Issue 2 (March, 1969)

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https://kb.osu.edu/handle/1811/1162

Front Matter
pp 0
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Man's Influence on Lake Erie
Verduin, Jacob pp 65-70
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Sexual Dimorphism in Neutral Lipid Metabolism in the Indian-Meal Moth, Plodia Interpunctella (Hubner)
Yurkiewicz, William J. pp 70-73
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Book Review
pp 73-73
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Histogenesis of the Proventricular Submucosal Gland of the Chick as Revealed by Light and Electron Microscopy
Thomson, Dale S. pp 74-84
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Book Review
pp 84-84
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Observations on the Biology of the Variegated Darter, Etheostoma Variatum (Kirtland)
May, Bruce pp 85-92
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Efficiency Determinations for a Ge(Li) Detector
Tokcan, G.; Cothern, C. R. pp 92-100
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Book Review
pp 100-100
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The Effects of Size of Sampling Area and Dilution on Leucocyte Counts in a Hemocytometer
Ramsey, James M. pp 101-104
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Book Review
pp 104-104
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Studies on Saprolegniaceous Filamentous Fungi
Miller, Charles E.; Ristanovic, Bosiljka pp 105-109
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Measurement of Complacency in Blackbirds
Burtt, Harold E.; Giltz, Maurice L. pp 109-114
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Book Review
pp 114-114
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Studies of the Mexican Deltocephalinae. II, Seven New Species of Norvellina (Homoptera: Cicadellidae)
Kramer, James P.; DeLong, Dwight M. pp 115-121
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Effects of Photoperiod and Size on the Oxygen Consumption of the Dusky Salamander, Desmognathus Fuscus
Wood, Stephen C.; Orr, Lowell P. pp 121-125
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Book Reviews
pp 125-128
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Back Matter
pp 999
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Now showing 1 - 18 of 18

Back Matter
(1969-03)
Book Reviews
(1969-03)
Effects of Photoperiod and Size on the Oxygen Consumption of the Dusky Salamander, Desmognathus Fuscus
(1969-03) Wood, Stephen C.; Orr, Lowell P.
Three experimental groups of salamanders were acclimated in environmental chambers for 25 days at 10°C to photoperiods of 0 hours, 8 hours, and 16 hours. No significant differences were found in oxygen consumption between males in intergroup comparisons or between the sexes in intragroup comparisons. Females in the 16-hour and 0-hour groups did show significant differences in oxygen consumption. A strong positive correlation was found to exist between oxygen consumption and body weight in all groups.
Studies of the Mexican Deltocephalinae. II, Seven New Species of Norvellina (Homoptera: Cicadellidae)
(1969-03) Kramer, James P.; DeLong, Dwight M.
The Mexican species of Norvellina Ball are largely unknown or undescribed. Lindsay (1940) published a study of the 28 species and one variety of Norvellina known to occur in the United States, five of which, flavida Lindsay, seminuda (Say), mildredae (Ball), pulchella (Baker), and texana (Ball) have already been found in Mexico. No doubt others will be found there eventually. In this paper, seven new species of Norvellina are described: N. acuspina, N. uncata, N. adunca, N. denotata, N. forficata, N. cincta, and N. recepta. Other species, undoubtedly new, are represented by female specimens only, so these are not described, because the male specimens possess the best diagnostic characters for species separation. All holotypes and allotypes are in the DeLong Collection. Paratypes will be deposited in the collection of the United States National Museum.
Book Review
(1969-03)
Measurement of Complacency in Blackbirds
(1969-03) Burtt, Harold E.; Giltz, Maurice L.
he complacency—agitation continuum in Blackbirds was studied by recording their behavior in an observation cage. A scoring pattern with a reliability of 0.91 was developed. Cowbirds are the most complacent species and Starlings the most agitated. Grackles and Red-wings are intermediate. Individual differences within each species are demonstrated. It is probable that the trait under investigation is composed of a number of factors and that a factor analysis of several tests like the present one will throw light on avian personality structure
Studies on Saprolegniaceous Filamentous Fungi
(1969-03) Miller, Charles E.; Ristanovic, Bosiljka
Seventeen species of saprolegniaceous filamentous fungi from Athens County were isolated, studied, and identified under pure culture conditions. Five of the 17 species have not previously been reported from Ohio (Achlya caroliniana Coker, Saprolegnia kauffmaniana Pieters, S. mixta de Barry, S. hypogyna Pringsh., and S. moniiifera de Barry). Only five of the 17 species have previously been collected in southeastern Ohio. One hundred and twenty collections (15 a month for eight months—August through March 1968) yielded 113 isolates. Seventy-two percent were collected during August through October. Saprolegnia ferax was isolated most frequently. Most species, when grown on sterile hemp seeds in sterile glass-distilled water, initiated production of oogonia and antheridia sooner than those grown in a mixture of one third sterile lake water and two thirds glass-distilled water. Vegetative growth was greater in the latter medium.
Book Review
(1969-03)
The Effects of Size of Sampling Area and Dilution on Leucocyte Counts in a Hemocytometer
(1969-03) Ramsey, James M.
With nearly 5000 areas examined, the comparison of a Poisson distribution to the distribution of leucocytes in a hemocytometer chamber at both 1:100 and 1:25 dilutions indicated a poor fit (P= <0.0001), a non-random distribution. In a series of leucocyte determinations from a young, male university student comparing 28 counts from 18 mm2 (both chambers) with 28 from 9 mm2, and 28 from 4 mm2 (the usual standard), the mean from the 18 mm2 counts was not significantly different from that of the 9 mm2 counts. However, both the means of the 18 mm2 counts and the 9 mm2 counts were significantly different from that of the 4 mm2 counts (P = 0.02 and 0.035 respectively). Forty-two counts at 1:100 dilution had a mean not significantly different from that of 42 counts at 1:20 dilution (P = 0.06). It appears that the counts from the 18 mm2 area at 1:100 dilution are the most reliable and are therefore recommended for critical research determinations. Fourteen such counts had the most restricted range and the lowest standard deviation of any of the six combinations.
Book Review
(1969-03)
Efficiency Determinations for a Ge(Li) Detector
(1969-03) Tokcan, G.; Cothern, C. R.
The intrinsic efficiency of a Ge(Li) detector was determined for gamma-ray energies between 150 keV and 1500 keV. Two experimental methods were used. One method made use of the known relative intensities of La140 and Eu154 gamma rays. The second method made use of the known intensities of several calibrated sources. The resulting experimental full-energy peak-efficiency curve is compared with a published semi-empirical relation given by k « = — [l-e-cr+Aoe-BE], c where e is the efficiency, and r and a are the photoelectric and Compton scattering absorption coefficients, respectively. The empirical constants k, A, B, and c are parameters, and E is the gamma-ray energy. It was found that the above relation agrees with the experimental results within an accuracy of 3%.
Observations on the Biology of the Variegated Darter, Etheostoma Variatum (Kirtland)
(1969-03) May, Bruce
Between June, 1964, and October, 1965, field and laboratory studies were conducted on the reproductive biology and larval development of variegated darters inhabiting Big Darby Creek, Pickaway County, approximately 25 miles southwest of Columbus, Ohio. These studies lead to the following conclusions. Prior to spawning, the darters migrate upstream from their wintering areas in the pools to the spawning riffles. The majority of the males become ripe when the water temperature reaches 40°F, whereas most females do not ripen until water temperature approaches 50°F. Spawning activity is confined mainly to the period from April 15 to May 10 when the water temperature is between 50°F and 70°F. Integration of field and laboratory data indicates that the eggs are deposited in the sand that accumulates behind rocks and boulders in the upper parts of riffles. Males, in a laboratory environment, exhibit both intra- and inter-specific territorial defense. The spawning behavior includes the typical darter ritual of following, nosing, and quivering movements, with the female choosing the spawning site. Eggs deposited in sand behind and between rocks and in fine gravel hatch in approximately 14 days at the prevailing temperatures. Fry, fed a diet of brine shrimp larvae, attain the juvenile stage within six weeks after hatching.
Book Review
(1969-03)
Histogenesis of the Proventricular Submucosal Gland of the Chick as Revealed by Light and Electron Microscopy
(1969-03) Thomson, Dale S.
The development of the submucosal tubuloalveolar glands of the proventriculus was studied with both light and electron microscopes, with special reference given to the 13-18-day period. Beginning as an invagination in the stratified columnar epithelium lining the lumen of the proventriculus, the simple tubular gland, by repeated bifurcation of the invaginated portion, by sloughing of the superficial cells, and by remodeling of the residual basal cells from columnar to cuboidal, becomes a compound tubuloalveolar gland composed of numerous secretory units. Concomitant with the gross cellular changes, ultrastructural changes in the intercellular membranes are evident. By day 4 after hatching, the cells forming the secretory units appear to be functional.
Book Review
(1969-03)
Sexual Dimorphism in Neutral Lipid Metabolism in the Indian-Meal Moth, Plodia Interpunctella (Hubner)
(1969-03) Yurkiewicz, William J.
Of last larval instar Indian-meal moths, Plodia interpunctella (Hubner), males contain slightly more total neutral lipid per gram live weight than do females. The qualitative composition of the various neutral fractions is similar in both sexes. During the pupal period, the female catabolizes considerably more triglyceride than the male, resulting in a much lower triglyceride content in the newly emerged adult female. There is an almost equal rate of lipid utilization in both sexes during the first three days of adult life.
Man's Influence on Lake Erie
(1969-03) Verduin, Jacob
Conversion of northwestern Ohio's Great Black Swamp to farm land during the last half of the nineteenth century had a profound, but scantily documented influence on Lake Erie. Silts, once largely filtered out by the swampland vegetation, were, with the destruction of that vegetation, carried into Lake Erie, where their effect in reducing light penetration has significantly altered the lake's biota. More recently a spectacular enhancement of plant nutrients, especially phosphorus, which has increased five-fold since 1948, has supported nuisance levels of plant growth. This plant growth creates severe oxygen depletion near the lake bottom and is therefore responsible for additional major and undesirable changes in species composition of plant and animal communities. The obvious solution to this problem is the removal of the plant nutrients from the waters before they enter Lake Erie. The "living filter" treatment, in which sewage-plant effluents are filtered through root zones of plant communities, seems most promising.
Front Matter
(1969-03)

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