Development of Diaprepes abbreviatus (Coleoptera: Curculionidae) on Artificial and Citrus Root Substrates

Quintela, E. D.; Fan, Junjun; McCoy, C. W.

doi:10.1093/jee/91.5.1173

Cited by 33 publications

(20 citation statements)

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“…Gainesville, FL (see http:// www.doacs.state.fl.us/pi/methods/diaprepes.html for rearing procedures). At the time of infestation, larvae were about 28 d old with an average head capsule width of 1.15 ± 0.14 mm, hence they were fourth to sixth instar or late fifth instar on average (Quintela et al 1998). Larvae were placed individually into each of 10-20 holes made in the soil that were 3-10 cm deep, 4-8 cm from the stem, and 3 cm apart with 20 total larvae per container.…”

Section: Plant Materialsmentioning

confidence: 99%

“…Young weevil larvae feed on small roots, but as they grow may excavate deep grooves on larger roots and consume the outer bark and cambial layers (McCoy et al 2002). Roots may be girdled causing severe root damage or death, which reduces the ability of the plants to take up nutrients, and often kills small citrus trees (Wolcott 1936(Wolcott , 1948Quintela et al 1998;McCoy et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Diaz¹,

Mannion²,

Schaffer³

2006

Journal of Economic Entomology

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Section: Plant Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Diaz¹,

Mannion²,

Schaffer³

2006

Journal of Economic Entomology

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“…Each tube was emptied in aliquots, and each aliquot was inspected for D. abbreviatus larvae under a binocular microscope. Each larva was identiÞed as a D. abbreviatus larva by head suture pattern and to larval instar by head capsule measurement (Quintela et al 1998).…”

Section: Methodsmentioning

confidence: 99%

Abundance of <I>Diaprepes abbreviatus</I> (L.) (Coleoptera: Curculionidae) Neonates Falling to the Soil Under Tree Canopies in Florida Citrus Groves

Nigg¹,

Simpson²,

Stuart³

et al. 2003

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The purpose of these experiments was to estimate the number and distribution of Diaprepes abbreviatus (L.) neonate larvae dropping from the canopy of infested citrus trees. The number of neonates was monitored in the field using passive funnel traps in two simultaneous experiments and a separate experiment for an additional year. In one experiment, traps were placed from trunk to dripline in the cardinal directions under each of five trees (132 traps total). In a second experiment, eight traps were placed under each tree in the cardinal directions, one trap 30 cm from the trunk and one trap 30 cm from the dripline/direction for 25 trees (200 traps total). Larvae were collected weekly for 50 wk in conical tubes containing ethylene glycol as a preservative. Traps closer to the tree trunk captured more larvae than traps nearer the dripline. The area under the tree canopy was positively correlated with the total estimated number of larvae captured per tree. The estimated number of total larvae/tree over the course of our experiments ranged from 955 to 7,290. The highest number of neonate larvae observed in 1 wk was 67 +/- 6/m2. There was an inverse relationship between the number of traps beneath a tree and the number of trees that needed to be sampled to estimate mean population density with a given precision. However, there was a direct relationship between number of traps/tree and the total number of traps needed for a given precision. This passive technique could be used to quantify the destructive larval stage and to assess D. abbreviatus management strategies.

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“…Uninfested 1-yr-old Swingle, Citrus paradisi Macf ϫ Poncirus trifoliata (L.), rootstock seedlings were placed in a cleared area of the grove in sandy soil. Three weeks later, each tree was infested by digging a small hole at the base and adding Þve each of larvae weighing 25 Ϯ 15, 100 Ϯ 15, and 200 Ϯ 15 mg, (approximate weights of Þfth, sixth, and seventh instar, respectively, Quintela et al 1998). It was not known in advance which age would be most likely to survive, and previous monitoring of larvae of different ages in the laboratory had found no signiÞcant sound pulse differences (Mankin et al 2000a;R.W.M., unpublished data).…”

Section: Methodsmentioning

confidence: 99%

Acoustic Surveying of Subterranean Insect Populations in Citrus Groves

Mankin

Lapointe²,

Franqui³

2001

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Subterranean insect pests cause considerable economic damage but their concealment makes detection difficult. A portable acoustic system was developed and tested for its potential to rate the likelihood that trees in citrus groves were infested with Diaprepes abbreviatus (L.) larvae. The likelihood was rated independently by a computer program and an experienced listener that distinguished insect sounds from background noises. Diaprepes abbreviatus, Phyllophaga spp., or other pest insects were excavated from all 11 sites rated at high likelihood of infestation but were absent from 20 of 25 low-rated sites. There was a significant regression between the activity rate and the number of pest organisms present at recording sites although the correlation was weaker than between activity rate and likelihood of infestation. Although the system is at an early stage of development, the success of these field tests suggests that it has considerable potential as a tool to detect and monitor hidden infestations of insects in soil.

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Development of Diaprepes abbreviatus (Coleoptera: Curculionidae) on Artificial and Citrus Root Substrates

Cited by 33 publications

References 0 publications

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Effect of Root Feeding by Diaprepes abbreviatus (Coleoptera: Curculionidae) Larvae on Leaf Gas Exchange and Growth of Three Ornamental Tree Species

Abundance of <I>Diaprepes abbreviatus</I> (L.) (Coleoptera: Curculionidae) Neonates Falling to the Soil Under Tree Canopies in Florida Citrus Groves

Acoustic Surveying of Subterranean Insect Populations in Citrus Groves

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