Spider predators of lepidopteran eggs in south Texas field crops

@article{Pfannenstiel2008SpiderPO,
  title={Spider predators of lepidopteran eggs in south Texas field crops},
  author={Robert S. Pfannenstiel},
  journal={Biological Control},
  year={2008},
  volume={46},
  pages={202-208}
}
  • R. Pfannenstiel
  • Published 1 August 2008
  • Biology, Environmental Science
  • Biological Control

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References

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TLDR
Of the predators observed feeding nocturnally, only Solenopsis invicta has been studied as a predator of lepidopteran eggs, little or nothing is known about the predatory characteristics of the other taxa.
Mortality of Helicoverpa zea (Lepidoptera: Noctuidae) Eggs in Cotton as a Function of Oviposition Sites, Predator Species, and Desiccation
TLDR
Seasonal predation rates of Helicoverpa zea zea (Boddie) eggs on cotton plants were determined by placing 32P-labeled moth eggs on different types of plant structures throughout the vertical strata of cotton plants and ground based predators added significantly to egg predation.
PREDATORS OF BUDWORM/BOLLWORM EGGS IN COTTON: AN IMMUNOLOGICAL STUDY
TLDR
Species of predators sampled in a 30-acre cotton field during the 1996 growing season and assayed for the presence of heliothine egg protein yielded the majority of positive responses, but abundance of cotton aphids relative to heliOTHine eggs during aphid outbreaks may have negative consequences for the efficacy of natural enemies against heliothsine eggs.
Spider fauna of soybean crops in south-east Queensland and their potential as predators of Helicoverpa spp. (Lepidoptera: Noctuidae)
TLDR
Lycosidae, Clubionidae, Oxyopidae, Salticidae and Thomisidae have the capacity to contribute to control of Helicoverpa spp.
Identification and Diel Activity Patterns of Predators Attacking Helicoverpa zea (Lepidoptera: Noctuidae) Eggs in Soybean and Sweet Corn
TLDR
The complex of predators feeding on lepidopteran eggs [Helicoverpa zea (Boddie)] and the key predators discovered in this study were different in each crop and the period of peak egg predation did also.
Spiders (araneae) as potential predators of leafroller larvae and egg masses (lepidoptera: Tortricidae) in Central Washington apple and pear orchards
Eleven species of arboreal, hunting spiders, common in central Washington apple and pear orchards, were evaluated as potential predators of the tortricid leafrollers, Pandemis pyrusana Kearfott and
Predation of Heliothis virescens (F.) Eggs on CoUon in East Texas
TLDR
Predator efficiency values were calculated for several species or groups of species and presented as number of eggs individually consumed per 24 h, and revealed a seasonal mean of 137:1 (predator-to-egg ratio).
Nocturnal predators and their impact on lepidopteran eggs in annual crops: what we don't see does help us!
TLDR
Nocturnal and nocturnal predators of particular importance included a group of cursorial spiders responsible for nearly 25% of all observations of predation in cotton as well as the formicids (primarily Solenopsis invicta Buren) of the four spider species most frequently observed feeding on eggs.
Nectar Feeding by Wandering Spiders on Cotton Plants
TLDR
A cold anthrone test to detect the presence of ingested fructose, a plant-derived sugar, in wandering spiders occupying cotton plants, suggests that nectarivory is common for foliage wandering spiders and may contribute to fitness.
Location of Beet Armyworm (Lepidoptera: Noctuidae) Egg Mass Deposition within Canopies of Cotton and Pigweed
TLDR
Investigation and quantified placement of egg masses by laboratory colony females within cotton and pigweed canopies of different heights indicate that scouting for egg masses on the underside of leaves in the upper half of the canopy will recover ≈80% of the egg masses present on the plants.
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