INFLUENCE OF SOIL PHYSICAL FACTORS ON SURVIVAL AND DEVELOPMENT OF THE LARVAE AND PUPAE OF THE BEAN LEAF BEETLE, CEROTOMA TRIFURCATA (COLEOPTERA: CHRYSOMELIDAE)

1984 ◽  
Vol 116 (7) ◽  
pp. 1015-1023 ◽  
Author(s):  
P. G. Marrone ◽  
R. E. Stinner

AbstractEffects of soil moisture, texture, and temperature on larval and pupal survival and development of the bean leaf beetle, Cerotoma trifurcata (Forster), were investigated in laboratory and greenhouse studies. In both cases, mortality rates were highest during the first instar, decreased during subsequent larval instars, then increased during the pupal stage. Under constant laboratory conditions, survival and adult weights were highest in wet and organic soils and lowest in dry and loamy sand soils. In wet and organic soils, developmental time was shorter than in other soils.Although survival/plant in the greenhouse was greatest in sandy clay loam, survival/nodule was greatest in organic soil.These studies, together with oviposition preference, egg survival, and larval movement experiments agree with field observations and provide some explanations for observed patterns of local and regional abundance of the bean leaf beetle in North Carolina.

2014 ◽  
Vol 20 (9) ◽  
pp. 2778-2792 ◽  
Author(s):  
Emily A. Berzitis ◽  
Jordan N. Minigan ◽  
Rebecca H. Hallett ◽  
Jonathan A. Newman

1972 ◽  
Vol 104 (6) ◽  
pp. 797-814 ◽  
Author(s):  
Robert G. Helgesen ◽  
Dean L. Haynes

AbstractThe cereal leaf beetle, Oulema melanopus (L.), has rapidly increased its numbers and range since it was discovered in Michigan in 1962. We have shown in this report that intraspecific density-dependent mortality is the major constraint on survivorship. We have attempted to quantify survival within a generation from the egg stage to the adult.Larval mortality varies among populations. Density-dependent mortality, caused by intraspecific competition, accounts for most of the variation of within-generation survival of the cereal leaf beetle in wheat and oats. Mortality in the first instar on oats and the fourth instar on wheat and oats is a linear function of the logarithm of total egg density. Establishment of the first instar on oats appears to become more difficult as density increases because leaf surface disturbance and interference with larger larva increases. Competition for food accounts for the increase in mortality of the fourth instar in both wheat and oats as density increases. Egg survival, survival of the first instar on wheat and in the second, third, and pupal stage in both crops are constants with respect to density. These constants can be expected to change with respect to other environmental parameters however, e.g. host variety, planting date, rainfall, etc.


2014 ◽  
Vol 14 (62) ◽  
pp. 1-15
Author(s):  
Bamphitlhi Tiroesele ◽  
Steven R. Skoda ◽  
Thomas E. Hunt ◽  
Donald J. Lee ◽  
Jaime Molina-Ochoa ◽  
...  

1989 ◽  
Vol 24 (4) ◽  
pp. 582-587 ◽  
Author(s):  
Henry N. Pitre

A field population of bean leaf beetle, Cerotoma trifurcata (Forster), adults on soybean, cv. Lee, in north Mississippi showed consistent frequencies of occurrence of polymorphic forms during the growing season. The greatest percentage of beetles were in the beige with spots category (62%), followed in order by beige without spots (27%), crimson with spots (8%), and crimson without spots (3%). Field-collected adults experimentally transmitted bean pod mottle virus from infected soybean plants, cv. Bragg, to healthy seedlings (1st trifoliolate) after a 24-h acquisition feeding on virus infected source plants with equal degrees of polymorph transmission efficiency (29 - 35%, n.s.).


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