Population ecology and phenology of Diaphorina citri (Hemiptera: Psyllidae) in two Florida citrus groves.
Identifieur interne : 002022 ( Main/Exploration ); précédent : 002021; suivant : 002023Population ecology and phenology of Diaphorina citri (Hemiptera: Psyllidae) in two Florida citrus groves.
Auteurs : David G. Hall [États-Unis] ; Matthew G. Hentz ; Robert C. AdairSource :
- Environmental entomology [ 0046-225X ] ; 2008.
English descriptors
- KwdEn :
- MESH :
- geographic : Florida.
- growth & development : Hemiptera.
- physiology : Citrus paradisi, Citrus sinensis, Hemiptera.
- Animals, Female, Life Cycle Stages, Male, Population Density, Population Dynamics, Rain, Temperature.
Abstract
Studies were conducted to assess population densities and phenology of the psyllid Diaphorina citri Kuwayama at two citrus groves in east-central Florida. One grove contained young, irrigated grapefruit trees and the other contained mature, nonirrigated orange trees. The two groves were sampled weekly for eggs, nymphs, and adults on flush shoots; for adults on mature leaves; and for adults captured on yellow sticky card traps. Because infestations of immature D. citri develop strictly on young flush, the abundance of flush was assessed weekly. Overall means of 26.5, 16.8, and 0.27 eggs, nymphs, and adults per flush shoot, respectively, were observed in the young grapefruit trees. In the grove of mature orange trees, overall means of 16.0, 12.7, and 0.31 eggs, nymphs, and adults per flush shoot were observed, respectively. Flush abundance was an inconsistent indicator of the mean density of D. citri per flush shoot. Mean density per shoot by itself was an inconsistent indicator of overall population levels of D. citri at each study site because few shoots were sometimes present when mean densities per shoot were high. May, June, and July were periods of time when immature D. citri were consistently present and most abundant at each study site, but the study indicated large infestations could occur at any time of the year depending on environmental factors and flush availability. Yellow sticky traps were effective for both male and female D. citri and useful for gauging adult population trends.
DOI: 10.1603/0046-225X(2008)37[914:PEAPOD]2.0.CO;2
PubMed: 18801257
Affiliations:
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Le document en format XML
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<author><name sortKey="Hall, David G" sort="Hall, David G" uniqKey="Hall D" first="David G" last="Hall">David G. Hall</name>
<affiliation wicri:level="2"><nlm:affiliation>USDA-ARS, U.S. Horticultural Research Laboratory, Subtropical Insects Research Unit, 2001 South Rock Rd., Fort Pierce, FL 34945, USA. dhall@ushrl.ars.usda.gov</nlm:affiliation>
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<wicri:regionArea>USDA-ARS, U.S. Horticultural Research Laboratory, Subtropical Insects Research Unit, 2001 South Rock Rd., Fort Pierce, FL 34945</wicri:regionArea>
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<term>Hemiptera (physiology)</term>
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<term>Rain</term>
<term>Temperature</term>
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<front><div type="abstract" xml:lang="en">Studies were conducted to assess population densities and phenology of the psyllid Diaphorina citri Kuwayama at two citrus groves in east-central Florida. One grove contained young, irrigated grapefruit trees and the other contained mature, nonirrigated orange trees. The two groves were sampled weekly for eggs, nymphs, and adults on flush shoots; for adults on mature leaves; and for adults captured on yellow sticky card traps. Because infestations of immature D. citri develop strictly on young flush, the abundance of flush was assessed weekly. Overall means of 26.5, 16.8, and 0.27 eggs, nymphs, and adults per flush shoot, respectively, were observed in the young grapefruit trees. In the grove of mature orange trees, overall means of 16.0, 12.7, and 0.31 eggs, nymphs, and adults per flush shoot were observed, respectively. Flush abundance was an inconsistent indicator of the mean density of D. citri per flush shoot. Mean density per shoot by itself was an inconsistent indicator of overall population levels of D. citri at each study site because few shoots were sometimes present when mean densities per shoot were high. May, June, and July were periods of time when immature D. citri were consistently present and most abundant at each study site, but the study indicated large infestations could occur at any time of the year depending on environmental factors and flush availability. Yellow sticky traps were effective for both male and female D. citri and useful for gauging adult population trends.</div>
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<name sortKey="Hentz, Matthew G" sort="Hentz, Matthew G" uniqKey="Hentz M" first="Matthew G" last="Hentz">Matthew G. Hentz</name>
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<country name="États-Unis"><region name="Floride"><name sortKey="Hall, David G" sort="Hall, David G" uniqKey="Hall D" first="David G" last="Hall">David G. Hall</name>
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