Thaumatotibia leucotreta and the Navel orange: ovipositional preferences and host susceptibility
Identifieur interne : 000C43 ( Main/Exploration ); précédent : 000C42; suivant : 000C44Thaumatotibia leucotreta and the Navel orange: ovipositional preferences and host susceptibility
Auteurs : C. N. Love [Afrique du Sud] ; M. P. Hill [Afrique du Sud] ; S. D. Moore [Afrique du Sud]Source :
- Journal of applied entomology : (1986) [ 0931-2048 ] ; 2014.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
False codling moth, Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae), presents a significant threat to the South African citrus industry. To limit income loss due to direct larval damage or from fruit rejection due to the phytosanitary status of this pest, additional pre-harvest control techniques are required for Navel oranges, which are known to be susceptible to T. leucotreta damage. A number of Navel orange cultivars have been developed, and differences in female T. leucotreta ovipositional preference and susceptibility of cultivars to larval penetration are known to exist. Navel orange cultivars were grouped according to time of maturity (early, mid- and late season). Female T. leucotreta were subjected to choice and no-choice tests with these cultivars, measured by oviposition. Host susceptibility was tested by allowing neonate T. leucotreta larvae to penetrate the different Navel cultivars. In the early maturing group, Fischer Navels were least preferred for oviposition and the least susceptible to larval penetration. The mid- and late season maturing groupings showed limited differences in oviposition preference, although host susceptibility did appear to be an important factor in assessing the vulnerability of fruit to T. leucotreta. Despite being widely planted in South Africa, the mid-season Palmer Navels were highly susceptible to larval penetration, while for the late season cultivars, Cambria and Glen Ora Late were the least susceptible to T. leucotreta. As a result of these laboratory trials, it is recommended that farmers increase cultivation of Fischer Navels as the principal early season cultivar, avoid Palmer Navels in favour of other mid-season maturing cultivars and give preference to the late maturing Cambria and Glen Ora Late cultivars, to limit T. leucotreta damage.
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Moore</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Zoology and Entomology, Rhodes University Grahamstown</s1><s3>ZAF</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Department of Zoology and Entomology, Rhodes University Grahamstown</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Citrus Research International Port Elizabeth</s1><s3>ZAF</s3><sZ>3 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Citrus Research International Port Elizabeth</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">14-0212927</idno><date when="2014">2014</date><idno type="stanalyst">PASCAL 14-0212927 INIST</idno><idno type="RBID">Pascal:14-0212927</idno><idno type="wicri:Area/PascalFrancis/Corpus">000008</idno><idno type="wicri:Area/PascalFrancis/Curation">000992</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000005</idno><idno type="wicri:doubleKey">0931-2048:2014:Love C:thaumatotibia:leucotreta:and</idno><idno type="wicri:Area/Main/Merge">000C46</idno><idno type="wicri:Area/Main/Curation">000C43</idno><idno type="wicri:Area/Main/Exploration">000C43</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Thaumatotibia leucotreta and the Navel orange: ovipositional preferences and host susceptibility</title><author><name sortKey="Love, C N" sort="Love, C N" uniqKey="Love C" first="C. N." last="Love">C. N. Love</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Zoology and Entomology, Rhodes University Grahamstown</s1><s3>ZAF</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Department of Zoology and Entomology, Rhodes University Grahamstown</wicri:noRegion></affiliation></author><author><name sortKey="Hill, M P" sort="Hill, M P" uniqKey="Hill M" first="M. P." last="Hill">M. P. Hill</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Zoology and Entomology, Rhodes University Grahamstown</s1><s3>ZAF</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Department of Zoology and Entomology, Rhodes University Grahamstown</wicri:noRegion></affiliation></author><author><name sortKey="Moore, S D" sort="Moore, S D" uniqKey="Moore S" first="S. D." last="Moore">S. D. Moore</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Zoology and Entomology, Rhodes University Grahamstown</s1><s3>ZAF</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Department of Zoology and Entomology, Rhodes University Grahamstown</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Citrus Research International Port Elizabeth</s1><s3>ZAF</s3><sZ>3 aut.</sZ></inist:fA14><country>Afrique du Sud</country><wicri:noRegion>Citrus Research International Port Elizabeth</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of applied entomology : (1986)</title><title level="j" type="abbreviated">J. appl. entomol. : (1986)</title><idno type="ISSN">0931-2048</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of applied entomology : (1986)</title><title level="j" type="abbreviated">J. appl. entomol. : (1986)</title><idno type="ISSN">0931-2048</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Citrus sinensis</term><term>Cydia pomonella</term><term>Egg laying</term><term>Host</term><term>Orange</term><term>Pest</term><term>Pest and disease control</term><term>Pest organism</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Ponte</term><term>Hôte</term><term>Déprédateur</term><term>Lutte phytosanitaire</term><term>Citrus sinensis</term><term>Cydia pomonella</term><term>Orange</term><term>Organisme nuisible</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">False codling moth, Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae), presents a significant threat to the South African citrus industry. To limit income loss due to direct larval damage or from fruit rejection due to the phytosanitary status of this pest, additional pre-harvest control techniques are required for Navel oranges, which are known to be susceptible to T. leucotreta damage. A number of Navel orange cultivars have been developed, and differences in female T. leucotreta ovipositional preference and susceptibility of cultivars to larval penetration are known to exist. Navel orange cultivars were grouped according to time of maturity (early, mid- and late season). Female T. leucotreta were subjected to choice and no-choice tests with these cultivars, measured by oviposition. Host susceptibility was tested by allowing neonate T. leucotreta larvae to penetrate the different Navel cultivars. In the early maturing group, Fischer Navels were least preferred for oviposition and the least susceptible to larval penetration. The mid- and late season maturing groupings showed limited differences in oviposition preference, although host susceptibility did appear to be an important factor in assessing the vulnerability of fruit to T. leucotreta. Despite being widely planted in South Africa, the mid-season Palmer Navels were highly susceptible to larval penetration, while for the late season cultivars, Cambria and Glen Ora Late were the least susceptible to T. leucotreta. As a result of these laboratory trials, it is recommended that farmers increase cultivation of Fischer Navels as the principal early season cultivar, avoid Palmer Navels in favour of other mid-season maturing cultivars and give preference to the late maturing Cambria and Glen Ora Late cultivars, to limit T. leucotreta damage.</div></front></TEI><affiliations><list><country><li>Afrique du Sud</li></country></list><tree><country name="Afrique du Sud"><noRegion><name sortKey="Love, C N" sort="Love, C N" uniqKey="Love C" first="C. N." last="Love">C. N. Love</name></noRegion><name sortKey="Hill, M P" sort="Hill, M P" uniqKey="Hill M" first="M. P." last="Hill">M. P. Hill</name><name sortKey="Moore, S D" sort="Moore, S D" uniqKey="Moore S" first="S. D." last="Moore">S. D. Moore</name><name sortKey="Moore, S D" sort="Moore, S D" uniqKey="Moore S" first="S. D." last="Moore">S. D. Moore</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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