Field Tests on the Attraction of Male Nun Moths (Lymantria monacha L.) and Gypsy Moths (Lymantria dispar L.) to GYPLURE, a Synthetic Sex Attractant1

AbstractPre-mating behavior of male gypsy moths was investigated in 0.2 ha circular plots containing from 0 to 72 virgin females/plot in untreated areas and in areas treated with an aerial application of 20 g/ha microencapsulated disparlure. Male moths in both treated and untreated plots oriented initially to trees, not directly to females. Mating was disrupted in treated plots but males continued search behavior. No anemotactic behavior was evident in either treated plots or untreated plots with females. In untreated plots, male moths were not caught on sticky panels (panels suspended at 2, 4, and 6 m) higher than pheromone baited traps set at 2 m. In treated plots, equal number of males were caught at all panel heights and in baited traps at 2 m. Previous mating and pheromone exposure histories of males did not affect the response of these males to traps baited with 4–5 mg of disparlure in untreated plots. In a test of the relative attractiveness of a cotton wick and a new laminated bait dispenser in Johnson traps, traps baited with the laminated dispenser had a greater male moth catch/male contact to trap than the traps baited with the cotton wick. Not all males contacting the Johnson trap were caught. A mode of action for disparlure as a disruptive agent in the long range sexual communication system of gypsy moth is proposed.

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Sperm Transfer in Gypsy Moths: Effect of Constant or Cyclic Temperature and Constant Light or Darkness during the Pupal Stage

Journal of Entomological Science ◽

10.18474/0749-8004-32.3.321 ◽

1997 ◽

Vol 32 (3) ◽

pp. 321-331 ◽

Cited By ~ 1

Author(s):

F. I. Proshold

Keyword(s):

Light Intensity ◽

Constant Temperature ◽

Lymantria Dispar ◽

Pupal Stage ◽

Sperm Transfer ◽

Constant Light ◽

Constant Darkness ◽

Gypsy Moths ◽

Cyclic Temperature ◽

Full Complement

Sperm transfer and fertility of the gypsy moth, Lymantria dispar (L.), held as pupae under constant temperature and 24-h light, 24-h darkness, or a photoperiod of 16:8 (L:D) h were compared with males held in cyclic temperature and 24-h light, 24-h darkness, or a photoperiod of 16:8 (L:D) h. Constant temperature and constant light or darkness severely reduced its ability to transfer sperm. Males held under constant light were more severely affected than males held in darkness, but sperm transfer was not correlated with light intensity (between 80 and 3960 lux). Nearly all males held under constant light and most held under constant darkness were sterile or partially sterile. In either case, sterility was caused by poor sperm transfer. Females with a full complement of sperm were fertile regardless of holding condition of male pupae. The sterilizing effect of constant light or darkness was overridden by cyclic temperature of 28°C for 16 h and 22°C for 8 h. At a photoperiod of 16:8 h, pupae held in constant 28°C transferred less sperm than those held at 25°C. Pupae held at constant 30°C were sterile, but those held at 30°C for 16 h and 25°C for 8 h transferred similar quantities of sperm as males held at constant 28°C.

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The Effects of Lichen Extracts on Feeding by Gypsy Moths (Lymantria dispar)

The Bryologist ◽

10.2307/3243628 ◽

1990 ◽

Vol 93 (2) ◽

pp. 220 ◽

Cited By ~ 4

Author(s):

Maria Rose Blewitt ◽

Gillian A. Cooper-Driver

Keyword(s):

Lymantria Dispar ◽

Gypsy Moths

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CAUSES AND ECOLOGICAL IMPLICATIONS OF EGG RETENTION IN THE GYPSY MOTH, LYMANTRIA DISPAR (L.) (LEPIDOPTERA: LYMANTRIIDAE).

The Canadian Entomologist ◽

10.4039/ent119765-9 ◽

1987 ◽

Vol 119 (9) ◽

pp. 765-771 ◽

Cited By ~ 4

Author(s):

Pedro Barbosa ◽

Peter Martinat

Keyword(s):

Gypsy Moth ◽

Lymantria Dispar ◽

Egg Production ◽

Pupal Development ◽

Egg Retention ◽

Gypsy Moths ◽

Ecological Implications ◽

Pupal Size ◽

Food Consumed

AbstractThe role of starvation, the occurrence of mating, and delays and the onset of mating on the retention of eggs by the gypsy moth, Lymantria dispar (L.), were evaluated. The mating status of female gypsy moths did influence egg retention.Mating delays did not affect egg retention. Differences in the number of females retaining some eggs were found among females whose larvae had been reared on different host plants. The amount of food consumed had a significant effect on egg retention. Partial starvation had an impact on egg retention and on larval and pupal development, pupal size, and total egg production. The greater the starvation the greater the egg retention. The ecological implications of these results are discussed.

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