THE EGGS AND OVIPOSITION SITES OF DIAPHNIDIA CAPITATA (HEMIPTERA: MIRIDAE) ON APPLE TREES

1970 ◽  
Vol 102 (10) ◽  
pp. 1316-1319 ◽  
Author(s):  
R. L. Horsburgh ◽  
Dean Asquith
Keyword(s):  
Tetranychus Urticae ◽  
Spider Mites ◽  
Panonychus Ulmi ◽  
Apple Trees ◽  
Oviposition Sites

AbstractNymphal and adult Diaphnidia capitata (Van Duzee) have long been recognized as predators of Panonychus ulmi (Koch) and Tetranychus urticae Koch. The eggs and oviposition sites preferred by this species are described herein to supplement available descriptions of the eggs of mirid predators of spider mites.

THE EGGS AND OVIPOSITION SITES OF HYALIODES VITRIPENNIS ON APPLE TREES (MIRIDAE: HEMIPTERA)

1968 ◽  
Vol 100 (2) ◽  
pp. 199-201 ◽  
Author(s):  
R. L. Horsburgh ◽  
Dean Asquith
Keyword(s):  
Tetranychus Urticae ◽  
Panonychus Ulmi ◽  
Apple Trees ◽  
Important Predator ◽  
Oviposition Sites

AbstractDuring 1967 Hyaliodes vitripennis (Say) proved to be an important predator of Panonychus ulmi Koch and Tetranychus urticae Koch in an experimental orchard. The eggs of this predator, described herein, are destinctive for the species. Observations on oviposition sites for the overwintering eggs are also included.

THE EGG AND OVIPOSITION SITE OF DERAEOCORIS NEBULOSUS (HEMIPTERA: MIRIDAE) ON APPLE TREES

1980 ◽  
Vol 112 (5) ◽  
pp. 527-528 ◽  
Author(s):  
J. P. McCaffrey ◽  
R. L. Horsburgh
Keyword(s):  
Panonychus Ulmi ◽  
Oviposition Site ◽  
Pest Species ◽  
Apple Orchards ◽  
Apple Trees ◽  
European Red Mite ◽  
Important Pest ◽  
Ornamental Trees ◽  
Trees And Shrubs ◽  
Oviposition Sites

The predaceous mirid Deraeocoris nebulosus (Uhler) is found on more than 50 species of ornamental trees and shrubs where it feeds on several important pest species (Wheeler et al. 1975). It is a common mite and aphid predator in commercial apple orchards in Virginia (Parrella et al. 1978). Wheeler et al. (1975) described the nymphal stages and biology, but made no mention of the egg or oviposition site. We describe the egg and oviposition site which we discovered while studying various predators of the European red mite, Panonychus ulmi (Koch), in Virginia apple orchards. Eggs and oviposition sites of other predaceous mirids associated with apple have been described (Kullenberg 1942; Collyer 1952, 1953; Sanford 1964; Horsburgh and Asquith 1968, 1970).

scholarly journals Differential Interaction of Apple Cultivars and Spider Mites (Acari: Tetranychidae)

HortScience ◽  
1998 ◽  
Vol 33 (4) ◽  
pp. 602c-602
Author(s):  
Jayasree Ravi ◽  
Donn T. Johnson ◽  
Barbara A. Lewis ◽  
Curt R. Rom
Keyword(s):  
Tetranychus Urticae ◽  
Carrying Capacity ◽  
Leaf Surface ◽  
Spider Mites ◽  
Panonychus Ulmi ◽  
Cultivar Differences ◽  
Lower Leaf Surface ◽  
Differential Interaction ◽  
Mite Feeding ◽  
Apple Cultivars

In 1995, greenhouse and orchard experiments of 11 apple cultivars were conducted in Fayetteville and Clarksville, Ark. Weekly cumulative mite days (CMD) were regressed against leaf bronzing (colorimeter value L) and compared among cultivars. European red mites, Panonychus ulmi and two-spotted spider mites, Tetranychus urticae, were found on leaves. `Liberty', `Royal Gala', and `Stark Spur Red Rome Beauty' had significantly more mites (>1940 CMD) than did `Arkansas Black' (1303), `Jonafree' (1150), and `Northern Spy' (973). A low CMD on `Northern Spy' caused leaves to bronze faster [y = 29.04 + 0.006(x); R2 = 52, P = 0.0002] than did a high CMD on `Liberty' [y = 30.41 + 0.0027(x); R2= 70, P = 0.0001]. Field estimates were made of spider mites/leaf and bronzing from 20 June to 7 Aug. `Stark Spur Red Rome Beauty' and `Stark Spur Law Rome' had significantly more CMD than did `Northern Spy' and `Arkansas Black'. Apple cultivars differed in carrying capacity to mites (susceptibility) and how fast leaves bronze in response to mite feeding. Cultivar differences in hairiness of the lower leaf surface were not correlated to CMD.

A STRAIN OF TETRANYCHUS URTICAE FROM THE GROUND COVER OF AN APPLE ORCHARD RESISTANT TO CHLORFENSON

1965 ◽  
Vol 45 (3) ◽  
pp. 226-228
Author(s):  
W. H. Foott
Keyword(s):  
Tetranychus Urticae ◽  
Ground Cover ◽  
Apple Orchard ◽  
Panonychus Ulmi ◽  
Spray Drift ◽  
Apple Trees ◽  
Low Level ◽  
Tetranychus Urticae Koch

A strain of Tetranychus urticae Koch (Acarina:Tetranychidae) developed a low level of resistance to chlorfenson when the material drifted to the ground cover while apple trees were sprayed for control of Panonychus ulmi (Koch). After being reared in the greenhouse for 4 years without further exposure to chlorfenson T. urticae lost its resistance. When Kelthane was substituted for chlorfenson as a control for P. ulmi the spray drift that reached the ground cover virtually eliminated T. urticae from the orchard.

UV-induced citrus resistance to spider mites (Tetranychus urticae)

2021 ◽  
Vol 144 ◽  
pp. 105580
Author(s):  
Sharon Warburg ◽  
Mosaab Yahyaa ◽  
Tamar Lahav ◽  
Shlomit Medina ◽  
Shiri Freilich ◽  
...  
Keyword(s):  
Tetranychus Urticae ◽  
Spider Mites

scholarly journals Maize inbred line B96 is the source of large-effect loci for resistance to generalist but not specialist spider mites

2021 ◽  
Author(s):  
Huyen Bui ◽  
Robert Greenhalgh ◽  
Gunbharpur S. Gill ◽  
Meiyuan Ji ◽  
Andre H. Kurlovs ◽  
...  
Keyword(s):  
Zea Mays ◽  
Tetranychus Urticae ◽  
European Corn Borer ◽  
Spider Mite ◽  
Insect Pests ◽  
Spider Mites ◽  
Mite Species ◽  
Chromosome 1 ◽  
Corn Borer ◽  
Oligonychus Pratensis

AbstractMaize (Zea mays subsp. mays) yield loss from arthropod herbivory is substantial. While the basis of resistance to major insect herbivores has been comparatively well-studied in maize, less is known about resistance to spider mite herbivores, which are distantly related to insects and feed by a different mechanism. Two spider mites, the generalist Tetranychus urticae, and the grass-specialist Oligonychus pratensis, are notable pests of maize, especially during drought conditions. We assessed the resistance to both mite species of 38 highly diverse maize lines, including several previously reported to be resistant to one or the other mite species. We found that line B96, as well as its derivatives B49 and B75, were highly resistant to T. urticae. In contrast, neither these three lines, nor any others included in our study, were notably resistant to O. pratensis. Quantitative trait locus (QTL) mapping with F2 populations from crosses of B49, B75, and B96 to susceptible B73 identified a large-effect QTL on chromosome 6 as underlying T. urticae resistance in each line, with an additional QTL on chromosome 1 in B96. Genome sequencing and haplotype analyses identified B96 as the apparent sole source of resistance haplotypes. Our study identifies loci for use in maize breeding programs for T. urticae resistance, as well as to assess if the molecular-genetic basis of spider mite resistance is shared with insect pests of maize, as B96 is also among the most resistant known maize lines to several insects, including the European corn borer, Ostrinia nubilalis.Key message Maize(Zea mays subsp. mays) inbred lines B49, B75, and B96 harbor large-effect loci for resistance to the generalist spider mite Tetranychus urticae, but not the specialist Oligonychus pratensis.

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