Spider predators of lepidopteran eggs in south Texas field crops

Pfannenstiel, R. S.

doi:10.1016/j.biocontrol.2008.03.011

Cited by 46 publications

(52 citation statements)

References 15 publications

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“…Researchers employed a 2% genetic divergence cutoff value for species identification. However, many exceptional cases are reported with lower interspecific genetic divergences, yet most of the cases were still able to be correctly dissected out amongst most of the species (Pfannenstiel et al 2008). By employing this 2% cutoff criterion for species delimitation, we aptly identified all thrips species in this study.…”

Section: Discussionmentioning

confidence: 99%

Dna Barcoding and Development of Species-Specific Markers for the Identification of Tea Mosquito Bugs (Miridae: Heteroptera) in India

et al. 2012

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Section: Discussionmentioning

confidence: 99%

Dna Barcoding and Development of Species-Specific Markers for the Identification of Tea Mosquito Bugs (Miridae: Heteroptera) in India

et al. 2012

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“…Previous reports have noted the importance of cursorial spiders (Miturgidae, Philodromidae, Anyphaenidae, Oxyopidae and Salticidae families) in woody and arable crops (Armendano and González 2011;Chen et al 2011;Mansour and Whitecomb 1986;Morris et al 1999;Pekár and Kocourek 2004). Findings reported by some authors (Pfannenstiel 2008;Pérez-Guerrero et al 2013) focus particular attention on the genus Cheiracanthium as major hunters preying not only on lepidopteran larvae and eggs (Mansour et al 1980;Miliczky and Calkins 2002;Pfannenstiel 2008) but also on other taxa (Michaud 2004).…”

Section: Introductionmentioning

confidence: 89%

“…Web-building spiders Erigone atra (Blackwall) and E. dentipalpis (Wider) are active almost exclusively by day, while Oedothorax fuscus (Blackwall) and O. apicatus (Blackwall) are mainly active at night (Alderweireldt 1994). Pfannenstiel (2008) observed the webbuilding spider Grammonota texana and cursorial spiders Hibana futilis (Banks), H. arunda Platnick and Cheiracanthium inclusum (Hentz) feeding on lepidopteran eggs almost exclusively at night. Finally, Pérez Guerrero et al (2014) have recently reported nocturnal predation of Cheiracanthium pelasgicum (C. L. Koch) on green lacewing eggs under laboratory conditions.…”

Section: Introductionmentioning

confidence: 97%

“…Among this group of natural enemies, some species of generalist predators feed on eggs and may have an early impact on Helicoverpa spp. populations, substantially reducing the number of larvae causing damage to the plant (Pfannenstiel 2008). Several authors have highlighted the importance of Orius species as predators on the eggs of Helicoverpa species (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Miturgidae or Anyphaenidae) have also been seen to feed on Helicoverpa spp. and other lepidopteran eggs (Pfannenstiel 2008). This group of spiders actively moves across the foliage in search of prey and may be harnessed for the control of pests such as Lepidoptera (Pérez-Guerrero et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Compatibility of Orius laevigatus and Cheiracanthium pelasgicum for predation on Helicoverpa armigera eggs: effects of density and day/night activity on intraguild predation

2015

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Intraguild predation (IGP) among predatory arthropods can impair pest control efforts and endanger the joint-action compatibility of groups of natural enemies. The present study used plant microcosms to examine IGP of Cheiracanthium pelasgicum (C. L. Koch) (Araneae: Miturgidae) on minute pirate bugs Orius laevigatus (Fieber) (Hemiptera: Anthocoridae), two of the major lepidopteran-egg predators in southern Spanish cotton fields, and its effects on the control of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) eggs. Intensive unidirectional IGP of C. pelasgicum on O. laevigatus was observed under plant arena conditions: over 90 % of minute bugs were killed by spiders in the first 24 h. However, no negative interaction between C. pelasgicum and minute pirate bugs was found under different eggdensity conditions with Orius alone, and the combination of two predator treatments displayed significantly higher predation rates than the spideralone treatment after 24 h. Increased egg density did not affect control by predators, nor did it prompt a significant reduction in IGP. During a day-night bioassay, negative interaction between the two predators was found under night conditions, impacting on egg predation rates due to the combination of two predators. Predation of spiders on H. armigera eggs took place mainly at night, while predation by minute bugs was recorded both by day and by night. Finally, IGP by C. pelasgicum on minute pirate bugs was significantly higher by night. These outcomes demonstrate that diurnal and more intensive nocturnal IGP by spiders on minute pirate bugs had a moderate impact on the early control of H. armigera, with no negative effects after 24 h.

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Molecular diagnosis of a previously unreported predator–prey association in coffee: Karnyothrips flavipes Jones (Thysanoptera: Phlaeothripidae) predation on the coffee berry borer

Jaramillo

Chapman

Vega

et al. 2010

Naturwissenschaften

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The coffee berry borer, Hypothenemus hampei, is the most important pest of coffee throughout the world, causing losses estimated at US $500 million/year. The thrips Karnyothrips flavipes was observed for the first time feeding on immature stages of H. hampei in April 2008 from samples collected in the Kisii area of Western Kenya. Since the trophic interactions between H. hampei and K. flavipes are carried out entirely within the coffee berry, and because thrips feed by liquid ingestion, we used molecular gut-content analysis to confirm the potential role of K. flavipes as a predator of H. hampei in an organic coffee production system. Species-specific COI primers designed for H. hampei were shown to have a high degree of specificity for H. hampei DNA and did not produce any PCR product from DNA templates of the other insects associated with the coffee agroecosystems. In total, 3,327 K. flavipes emerged from 17,792 H. hampei-infested berries collected from the field between April and September 2008. Throughout the season, 8.3% of K. flavipes tested positive for H. hampei DNA, although at times this figure approached 50%. Prey availability was significantly correlated with prey consumption, thus indicating the potential impact on H. hampei populations.

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Spider predators of lepidopteran eggs in south Texas field crops

Cited by 46 publications

References 15 publications

Dna Barcoding and Development of Species-Specific Markers for the Identification of Tea Mosquito Bugs (Miridae: Heteroptera) in India

Dna Barcoding and Development of Species-Specific Markers for the Identification of Tea Mosquito Bugs (Miridae: Heteroptera) in India

Compatibility of Orius laevigatus and Cheiracanthium pelasgicum for predation on Helicoverpa armigera eggs: effects of density and day/night activity on intraguild predation

Molecular diagnosis of a previously unreported predator–prey association in coffee: Karnyothrips flavipes Jones (Thysanoptera: Phlaeothripidae) predation on the coffee berry borer

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