Author: William Lloyd Sippell
Publisher:
ISBN:
Category :
Languages : en
Pages : 147
Book Description
A Study of the Forest Tent Caterpillar, Malacosoma Disstria Abn., and Its Parasite Complex in Ontario
Author: William Lloyd Sippell
Publisher:
ISBN:
Category :
Languages : en
Pages : 147
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 147
Book Description
Influence of Defoliation by the Forest Tent Caterpillar, Malacosoma Disstria HBN., Upon the Mortality and Growth of Aspen and on the Growth of Understory Balsam Fir in Northern Minnesota
Author: Ronald C. Froelich
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
Book Description
Experimental Aerial Application of Forest Tent Caterpillar Baculovirus
Author: W. G. H. Ives
Publisher:
ISBN: 9780662120773
Category : Aerial spraying and dusting in forestry
Languages : en
Pages : 9
Book Description
Publisher:
ISBN: 9780662120773
Category : Aerial spraying and dusting in forestry
Languages : en
Pages : 9
Book Description
Is Trypsin Inhibitor a Plant Defense Against the Larvae of the Forest Tent Caterpillar (Malacosoma Disstria)?
Author: Zhe Shi
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Forest tent caterpillars (Malacosoma disstria) are ubiquitous defoliating insects in North America. In Canada, trembling aspen is their favourite host tree, which can produce an inducible protein, trypsin inhibitor (TI), to inhibit trypsin, a major proteolytic enzyme in caterpillars' midguts. To determine the digestion-inhibiting effect of TI on M. disstria, this study focused on the performance of second instar larvae with different levels of TI on both balanced and low protein diets. Indices of performance were growth, food consumption, nutrient utilization efficiencies and nitrogen concentration in the frass under the treatments of different diet quality and different levels of TI extracted from both soybean and aspen. Both protein deficiency and higher levels of TI impaired the growth of caterpillars, but the impairing effect of TI only appeared on the caterpillars fed on balanced diet. Also, both soybean and aspen TI reduced food consumption and increased the nitrogen concentration in the frass, which was likely due to undigested protein in the frass. But only the aspen TI affected the nutrient utilization efficiencies in terms of decreased approximate digestibility (AD) and increased efficiency of conversion of ingested materials (ECI), which suggests a strategy used by caterpillars to utilize the nutrient more efficiently under aspen TI inhibition of the protein digestion. This study confirmed the digestion-inhibiting function of TI as a defense of aspen against forest tent caterpillars. Also, it suggested that caterpillars were able to regulate their growth under severe protein deficiency, possibly as an adaptation to this defense.
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Forest tent caterpillars (Malacosoma disstria) are ubiquitous defoliating insects in North America. In Canada, trembling aspen is their favourite host tree, which can produce an inducible protein, trypsin inhibitor (TI), to inhibit trypsin, a major proteolytic enzyme in caterpillars' midguts. To determine the digestion-inhibiting effect of TI on M. disstria, this study focused on the performance of second instar larvae with different levels of TI on both balanced and low protein diets. Indices of performance were growth, food consumption, nutrient utilization efficiencies and nitrogen concentration in the frass under the treatments of different diet quality and different levels of TI extracted from both soybean and aspen. Both protein deficiency and higher levels of TI impaired the growth of caterpillars, but the impairing effect of TI only appeared on the caterpillars fed on balanced diet. Also, both soybean and aspen TI reduced food consumption and increased the nitrogen concentration in the frass, which was likely due to undigested protein in the frass. But only the aspen TI affected the nutrient utilization efficiencies in terms of decreased approximate digestibility (AD) and increased efficiency of conversion of ingested materials (ECI), which suggests a strategy used by caterpillars to utilize the nutrient more efficiently under aspen TI inhibition of the protein digestion. This study confirmed the digestion-inhibiting function of TI as a defense of aspen against forest tent caterpillars. Also, it suggested that caterpillars were able to regulate their growth under severe protein deficiency, possibly as an adaptation to this defense.
The Effects of Forest Fragmentation on Parasitoids of the Forest Tent Caterpillar (Malacosoma Disstria)
Author: David Roth
Publisher:
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 226
Book Description
Publisher:
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 226
Book Description
The Effect of Defoliation by the Forest Tent Caterpillar, Malacosoma Disstria Hbn., on the Mortality, Twig Mortality, and Leaf Size of Aspen
Author: Daniel Meyer
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
Book Description
Damage Induced Changes in the Foliar Chemistry of Sugar Maple (Acer Saccharum Marsh.) and Their Effects on the Feeding Beehavior of the Forest Tent Caterpillar (Malacosoma Disstria Hubner)
Author: Andrea L. Diss
Publisher:
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 55
Book Description
Publisher:
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 55
Book Description
The Effects of Defoliation by the Forest Tent Caterpillar, Malacosoma Disstria Hbn
Author: Bernard Adolph Fashingbauger
Publisher:
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 221
Book Description
Publisher:
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 221
Book Description
Forest Insect Pests in Canada
Author:
Publisher:
ISBN: 9780662499237
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN: 9780662499237
Category :
Languages : en
Pages :
Book Description
The Effects of Forest Fragmentation on Parasitoids of the Forest Tent Caterpillar (Malacosoma Disstria) [microform]
Author: Roth, David
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 226
Book Description
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
ISBN:
Category : Forest tent caterpillar
Languages : en
Pages : 226
Book Description