Spillover of tent caterpillar (Malacosoma americanum) herbivory onto willow bioenergy crops in an agricultural landscape

2015 ◽  
Vol 167 (2) ◽  
pp. 178-185 ◽  
Author(s):  
J.O. Eckberg ◽  
G.A. Johnson ◽  
R.E. Pain ◽  
D.L. Wyse ◽  
G.E. Heimpel
Keyword(s):  
Agricultural Landscape ◽  
Bioenergy Crops ◽  
Malacosoma Americanum ◽  
Tent Caterpillar

Identification and behavioral assays of the trail pheromone of the forest tent caterpillar, Malacosoma disstria Hübner (Lepidoptera: Lasiocampidae)

1993 ◽  
Vol 71 (8) ◽  
pp. 1511-1515 ◽  
Author(s):  
T. D. Fitzgerald ◽  
F. X. Webster
Keyword(s):  
Trail Pheromone ◽  
Malacosoma Disstria ◽  
Forest Tent Caterpillar ◽  
Laboratory Studies ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Highly Sensitive ◽  
True Threshold ◽  
Behavioral Assays ◽  
Tent Caterpillar

Behavioral assays show that the steroid 5β-cholestan-3-one, isolated from the abdomen of the larva of the forest tent caterpillar (Malacosoma disstria), constitutes the chemical basis of trail following in this insect. Caterpillars follow artificial trails prepared from solvent dilutions of the compound at rates as low as 10−11 g∙mm−11 of trail, though the true threshold sensitivity is likely to be one or two orders of magnitude lower than this. Fourth-instar caterpillars store an average of 58 ng of the pheromone. Field and laboratory studies indicate that the compound is fully competitive with their authentic trails. The caterpillars are highly sensitive to differences in the concentration of the pheromone, preferring stronger trails to weaker trails. The caterpillars also respond to 5β-cholestane-3,24-dione, a chemical not found in M. disstria but known to be a component of the trail pheromone of the eastern tent caterpillar, Malacosoma americanum.

Studies on insect dormancy. II. Relationship of cold-hardiness to diapause and quiescence in the eastern tent caterpillar, Malacosoma americanum (Fab.), (Lasiocampidae: Lepidoptera)

1974 ◽  
Vol 52 (5) ◽  
pp. 629-637 ◽  
Author(s):  
Ajai Mansingh
Keyword(s):  
Cold Hardiness ◽  
Physiological Adaptation ◽  
Malacosoma Americanum ◽  
Glycerol Content ◽  
Supercooling Point ◽  
Mature Embryos ◽  
Glycerol Level ◽  
Carbohydrate Level ◽  
Cold Tolerant ◽  
Tent Caterpillar

Studies were conducted on the relationship between levels of glycerol and carbohydrates, supercooling points, and the relative abilities of diapausing and developing eggs and of larval instars of Malacosoma americanum to withstand various periods of chilling at 5° and −15 °C.Diapause in the mature embryos was associated with very high glycerol content (112 mg/g), low carbohydrate level (13 mg/g), and the ability to supercool to −35 °C. During diapause termination, the glycerol level was reduced lo 11 mg/g with a slight rise only in carbohydrate level while the supercooling point was raised to −14 °C. When quiescence was induced in the larvae by chilling them at 5 °C for 1 to 7 weeks, their wet weights and carbohydrate and glycerol contents decreased gradually. However, the supercooling point remained constant around −14 °C.Diapausing embryos could survive several weeks of chilling at −15° and 5 °C. However, only a few weeks of exposure to 5 °C was fatal to quiescent larvae.It is concluded that there is a direct relationship between glycerol content, supercooling points, and the relative abilities of developing and diapausing stages of the tent caterpillar to withstand low temperatures. The developing stages were naturally "cold-tolerant" with the ability to supercool to −14 °C and survive a few weeks of quiescence at 5 °C, which is well below their range of physiological adaptation. Induction of diapause enhanced the supercooling ability and increased cold-hardiness in the mature embryos.

Nutrient content of four rosaceous hosts and their effects on development and fecundity of the eastern tent caterpillar, Malacosoma americanum (Fab.) (Lepidoptera: Lasiocampidae)

1983 ◽  
Vol 61 (12) ◽  
pp. 2868-2872 ◽  
Author(s):  
A. Segarra-Carmona ◽  
P. Barbosa
Keyword(s):  
Fatty Acids ◽  
Water Content ◽  
Development Time ◽  
Direct Relationship ◽  
Nutrient Content ◽  
Pupal Weight ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Developmental Parameters ◽  
Tent Caterpillar

Eastern tent caterpillar, Malacosoma americanum (Fab.), larvae reared on four rosaceous hosts differed in development time and survival under laboratory conditions. Fecundity and pupal weight were also affected by diet. Levels of nitrogen, carbohydrates, and fatty acids in host foliage as well as water content and caloric values were determined. No direct relationship was found between nutrient or caloric levels and developmental parameters.

Daily foraging schedule of field colonies of the eastern tent caterpillar Malacosoma americanum

Oecologia ◽  
1988 ◽  
Vol 76 (4) ◽  
pp. 574-578 ◽  
Author(s):  
T. D. Fitzgerald ◽  
Tim Casey ◽  
Barbara Joos
Keyword(s):  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Tent Caterpillar

Thermal properties of the tent of early instar colonies of the eastern tent caterpillar, Malacosoma americanum (Lepidoptera: Lasiocampidae)

2012 ◽  
Vol 37 (8) ◽  
pp. 615-624 ◽  
Author(s):  
Terrence D. Fitzgerald ◽  
Steven Miller ◽  
Michael Smith
Keyword(s):  
Thermal Properties ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Early Instar ◽  
Tent Caterpillar

Reactions of Larvae of the Eastern Tent Caterpillar, Malacosoma americanum (F.), and of the Spotless Fall Webworm, Hyphantria textor Harr., to Pentatomid Predators

1950 ◽  
Vol 82 (2) ◽  
pp. 52-52 ◽  
Author(s):  
C. R. Sullivan ◽  
G. W. Green
Keyword(s):  
Field Studies ◽  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Fall Webworm ◽  
Tent Caterpillar

During recent field studies of the behaviour and activiw of larvae in colonies of M. americanum and H. textor, it was noticed that nymphs and adults of Podisus placidus (Uhler) and of P. modestus (Dallas) frequently visited colonies of the eastern tent caterpillar and occasionally those of the spotless fall webworm. Although small larvae, particularly those of the tent caterpillar, fell prey to both nymphs and adults, larvae of the fifth and sixth instars occasionally exhibited special reactions.

Elective recruitment by the eastern tent caterpillar (Malacosoma americanum)

1983 ◽  
Vol 31 (2) ◽  
pp. 417-423 ◽  
Author(s):  
T.D. Fitzgerald ◽  
S.C. Peterson
Keyword(s):  
Malacosoma Americanum ◽  
Eastern Tent Caterpillar ◽  
Tent Caterpillar
Sign in / Sign up

Export Citation Format

Share Document