Effects of Temperature on Feeding, Development, Fecundity, and Longevity of Nabis roseipennis (Hemiptera: Nabidae) Fed Tobacco Budworm (Lepidoptera: Noctuidae) Larvae and Tarnished Plant Bug (Hemiptera: Miridae) Nymphs

1986 ◽  
Vol 15 (3) ◽  
pp. 536-539 ◽  
Author(s):  
Devidas Nadgauda ◽  
Henry N. Pitre
Keyword(s):  
Tobacco Budworm ◽  
Tarnished Plant Bug ◽  
Nabis Roseipennis ◽  
Effects Of Temperature ◽  
Feeding Development ◽  
Lepidoptera Noctuidae

FEEDING AND DEVELOPMENT OF NABIS ROSEIPENNIS (HEMIPTERA: NABIDAE) ON HELIOTHIS VIRESCENS (LEPIDOPTERA: NOCTUIDAE) LARVAE1

1987 ◽  
Vol 22 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Devidas Nadgauda ◽  
Henry N. Pitre
Keyword(s):  
Heliothis Virescens ◽  
High Growth ◽  
Growth Potential ◽  
Nabis Roseipennis ◽  
Accelerate Development ◽  
Early Instar ◽  
The Individual ◽  
Feeding Development ◽  
Lepidoptera Noctuidae ◽  
High Growth Potential

Feeding, development, and duration of life stages of Nabis roseipennis Reuter, on different size (2, 3, 4, or 5 mm) early instar Heliothis virescens (F.) larvae were studied in the laboratory. Three or 4-mm larvae were optimum for feeding, consumption, and development of nymphs and adults. Nabis roseipennis fed 3 or 4 mm larvae consumed more and survived longer than those fed 2 or 5 mm larvae. Prey size significantly affected the duration of the individual 5 nymphal stages. Nymphs fed 3 or 4 mm larvae developed faster than those fed 2 or 5 mm larvae. Nymphs feeding on 2 mm larvae did not develop to adults. Nymphs and adults can survive and mature satisfactorily for extended periods on small prey, but need larger prey to accelerate development and maintain a high growth potential.

A unified degree day model describes survivorship of Copitarsia corruda Pogue & Simmons (Lepidoptera: Noctuidae) at different constant temperatures

2008 ◽  
Vol 99 (1) ◽  
pp. 65-72 ◽  
Author(s):  
N.N. Gómez ◽  
R.C. Venette ◽  
J.R. Gould ◽  
D.F. Winograd
Keyword(s):  
Survival Curve ◽  
The United States ◽  
Physiological Age ◽  
Alien Invasive Species ◽  
Temperature Threshold ◽  
Base Temperature ◽  
Survival Curves ◽  
Degree Day ◽  
Effects Of Temperature ◽  
Lepidoptera Noctuidae

AbstractPredictions of survivorship are critical to quantify the probability of establishment by an alien invasive species, but survival curves rarely distinguish between the effects of temperature on development versus senescence. We report chronological and physiological age-based survival curves for a potentially invasive noctuid, recently described as Copitarsia corruda Pogue & Simmons, collected from Peru and reared on asparagus at six constant temperatures between 9.7 and 34.5°C. Copitarsia spp. are not known to occur in the United States but are routinely intercepted at ports of entry. Chronological age survival curves differ significantly among temperatures. Survivorship at early age after hatch is greatest at lower temperatures and declines as temperature increases. Mean longevity was 220 (±13 SEM) days at 9.7°C. Physiological age survival curves constructed with developmental base temperature (7.2°C) did not correspond to those constructed with a senescence base temperature (5.9°C). A single degree day survival curve with an appropriate temperature threshold based on senescence adequately describes survivorship under non-stress temperature conditions (5.9–24.9°C).

Effects of the sap of the common oleander Nerium indicum (Apocyanaceae) on male fertility and spermatogenesis in the oriental tobacco budworm Helicoverpa assulta (Lepidoptera, Noctuidae)

2001 ◽  
Vol 204 (22) ◽  
pp. 3935-3942 ◽  
Author(s):  
Seong Eun Jeong ◽  
Yun Lee ◽  
Jeong Hee Hwang ◽  
Douglas C. Knipple
Keyword(s):  
Male Fertility ◽  
Chemical Constituents ◽  
Direct Injection ◽  
Arginine Decarboxylase ◽  
Tobacco Budworm ◽  
Polyamine Metabolism ◽  
Helicoverpa Assulta ◽  
Continuous Feeding ◽  
The Common ◽  
Lepidoptera Noctuidae

SUMMARY We investigated the effects of sap of the common oleander Nerium indicum (Apocyanaceae) on male fertility and spermatogenesis in the oriental tobacco budworm Helicoverpa assulta. We found that continuous feeding of oleander sap during the larval period significantly affects fertility in males but not in females. This effect was also induced by direct injection of oleander sap into the hemocoel of 2-day-old pupae. Histological analyses of developing testes following oleander injection revealed a developmental delay and progressively more severe morphological abnormalities in the later stages of development. The effects of oleander sap on spermatogenesis in H. assulta were associated with greatly reduced levels of the two major polyamines, spermidine and spermine, in testis compared with saline-injected controls. In contrast, levels of putrescine, which is a precursor of both spermidine and spermine, and the activities of the enzymes ornithine decarboxylase and arginine decarboxylase, which are involved in the biosynthesis of putrescine, were initially elevated following oleander injection, but subsequently failed to undergo the induction that normally occurs during late pupal development. The effects of oleander sap on spermidine and spermine levels could be the result of direct inhibition by chemical constituents of the oleander sap of one of the enzymes used in common in the conversions of putrescine to spermidine and spermidine to spermine; alternatively, these effects on polyamine metabolism could be secondary to the disruption of a more fundamental process in the developmental program guiding spermatogenesis in H. assulta.

Bollgard Cotton and Resistance of Tobacco Budworm (Lepidoptera: Noctuidae) to Conventional Insecticides in Southern Tamaulipas, Mexico

2005 ◽  
Vol 98 (6) ◽  
pp. 2203-2209 ◽  
Author(s):  
A. P. Terán-vargas ◽  
J. C. Rodríguez ◽  
C. A. Blanco ◽  
J. L. Martínez-carrillo ◽  
J. Cibrián-tovar ◽  
...  
Keyword(s):  
Tobacco Budworm ◽  
Lepidoptera Noctuidae
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