Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques
The bug, #Antestiopsis orbitalis# Westwood (Hem., Pentatomidae), causes major damage in Burundi coffee plantations. Efficient management against this insect needs to have a reliable sampling procedure to estimate, with good precision, the level of the populations in coffee fields. Studies of the distribution and spatial dispersal of this bug are therefore required. To this purpose, an inventory of #A. orbitalis# in eight plots, of around 100 coffee trees each, was undertaken. The number of bugs per tree fitted well to a negative binomial law, suggesting an aggregative behaviour of this insect. However, the aggregative coefficient was not constant on the different plots and adults were distributed in a more aggregative way than larvae. Study of the spatial dispersal of this bug generally indicated no particular structure (focus or gradient); only adults tended to be distributed according to gradients. Confidence intervals on the average number of bugs per tree were calculated following the robust method of bootstrap using different sized samples. Recommendations concerning sampling procedures are proposed.
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Subjects: | H10 - Ravageurs des plantes, U10 - Informatique, mathématiques et statistiques, Coffea arabica, Pentatomidae, infestation, distribution des populations, dynamique des populations, méthode statistique, échantillonnage, http://aims.fao.org/aos/agrovoc/c_1721, http://aims.fao.org/aos/agrovoc/c_30684, http://aims.fao.org/aos/agrovoc/c_3855, http://aims.fao.org/aos/agrovoc/c_6113, http://aims.fao.org/aos/agrovoc/c_6111, http://aims.fao.org/aos/agrovoc/c_7377, http://aims.fao.org/aos/agrovoc/c_6774, http://aims.fao.org/aos/agrovoc/c_1159, |
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dig-cirad-fr-3904612024-01-27T23:25:00Z http://agritrop.cirad.fr/390461/ http://agritrop.cirad.fr/390461/ Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques. Cilas Christian, Bouyjou Bernard, Decazy Bernard. 1998. Journal of Applied Entomology, 122 : 601-666.https://doi.org/10.1111/j.1439-0418.1998.tb01552.x <https://doi.org/10.1111/j.1439-0418.1998.tb01552.x> Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques Cilas, Christian Bouyjou, Bernard Decazy, Bernard eng 1998 Journal of Applied Entomology H10 - Ravageurs des plantes U10 - Informatique, mathématiques et statistiques Coffea arabica Pentatomidae infestation distribution des populations dynamique des populations méthode statistique échantillonnage http://aims.fao.org/aos/agrovoc/c_1721 http://aims.fao.org/aos/agrovoc/c_30684 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_6774 Burundi http://aims.fao.org/aos/agrovoc/c_1159 The bug, #Antestiopsis orbitalis# Westwood (Hem., Pentatomidae), causes major damage in Burundi coffee plantations. Efficient management against this insect needs to have a reliable sampling procedure to estimate, with good precision, the level of the populations in coffee fields. Studies of the distribution and spatial dispersal of this bug are therefore required. To this purpose, an inventory of #A. orbitalis# in eight plots, of around 100 coffee trees each, was undertaken. The number of bugs per tree fitted well to a negative binomial law, suggesting an aggregative behaviour of this insect. However, the aggregative coefficient was not constant on the different plots and adults were distributed in a more aggregative way than larvae. Study of the spatial dispersal of this bug generally indicated no particular structure (focus or gradient); only adults tended to be distributed according to gradients. Confidence intervals on the average number of bugs per tree were calculated following the robust method of bootstrap using different sized samples. Recommendations concerning sampling procedures are proposed. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/390461/1/390461.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1111/j.1439-0418.1998.tb01552.x 10.1111/j.1439-0418.1998.tb01552.x http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=90208 info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1439-0418.1998.tb01552.x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/j.1439-0418.1998.tb01552.x |
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H10 - Ravageurs des plantes U10 - Informatique, mathématiques et statistiques Coffea arabica Pentatomidae infestation distribution des populations dynamique des populations méthode statistique échantillonnage http://aims.fao.org/aos/agrovoc/c_1721 http://aims.fao.org/aos/agrovoc/c_30684 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_1159 H10 - Ravageurs des plantes U10 - Informatique, mathématiques et statistiques Coffea arabica Pentatomidae infestation distribution des populations dynamique des populations méthode statistique échantillonnage http://aims.fao.org/aos/agrovoc/c_1721 http://aims.fao.org/aos/agrovoc/c_30684 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_1159 |
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H10 - Ravageurs des plantes U10 - Informatique, mathématiques et statistiques Coffea arabica Pentatomidae infestation distribution des populations dynamique des populations méthode statistique échantillonnage http://aims.fao.org/aos/agrovoc/c_1721 http://aims.fao.org/aos/agrovoc/c_30684 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_1159 H10 - Ravageurs des plantes U10 - Informatique, mathématiques et statistiques Coffea arabica Pentatomidae infestation distribution des populations dynamique des populations méthode statistique échantillonnage http://aims.fao.org/aos/agrovoc/c_1721 http://aims.fao.org/aos/agrovoc/c_30684 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_1159 Cilas, Christian Bouyjou, Bernard Decazy, Bernard Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques |
description |
The bug, #Antestiopsis orbitalis# Westwood (Hem., Pentatomidae), causes major damage in Burundi coffee plantations. Efficient management against this insect needs to have a reliable sampling procedure to estimate, with good precision, the level of the populations in coffee fields. Studies of the distribution and spatial dispersal of this bug are therefore required. To this purpose, an inventory of #A. orbitalis# in eight plots, of around 100 coffee trees each, was undertaken. The number of bugs per tree fitted well to a negative binomial law, suggesting an aggregative behaviour of this insect. However, the aggregative coefficient was not constant on the different plots and adults were distributed in a more aggregative way than larvae. Study of the spatial dispersal of this bug generally indicated no particular structure (focus or gradient); only adults tended to be distributed according to gradients. Confidence intervals on the average number of bugs per tree were calculated following the robust method of bootstrap using different sized samples. Recommendations concerning sampling procedures are proposed. |
format |
article |
topic_facet |
H10 - Ravageurs des plantes U10 - Informatique, mathématiques et statistiques Coffea arabica Pentatomidae infestation distribution des populations dynamique des populations méthode statistique échantillonnage http://aims.fao.org/aos/agrovoc/c_1721 http://aims.fao.org/aos/agrovoc/c_30684 http://aims.fao.org/aos/agrovoc/c_3855 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_1159 |
author |
Cilas, Christian Bouyjou, Bernard Decazy, Bernard |
author_facet |
Cilas, Christian Bouyjou, Bernard Decazy, Bernard |
author_sort |
Cilas, Christian |
title |
Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques |
title_short |
Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques |
title_full |
Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques |
title_fullStr |
Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques |
title_full_unstemmed |
Frequency and distribution of Antestiopsis orbitalis Westwood (Hem., Pentatomidae) in coffee plantations in Burundi: implications for sampling techniques |
title_sort |
frequency and distribution of antestiopsis orbitalis westwood (hem., pentatomidae) in coffee plantations in burundi: implications for sampling techniques |
url |
http://agritrop.cirad.fr/390461/ http://agritrop.cirad.fr/390461/1/390461.pdf |
work_keys_str_mv |
AT cilaschristian frequencyanddistributionofantestiopsisorbitaliswestwoodhempentatomidaeincoffeeplantationsinburundiimplicationsforsamplingtechniques AT bouyjoubernard frequencyanddistributionofantestiopsisorbitaliswestwoodhempentatomidaeincoffeeplantationsinburundiimplicationsforsamplingtechniques AT decazybernard frequencyanddistributionofantestiopsisorbitaliswestwoodhempentatomidaeincoffeeplantationsinburundiimplicationsforsamplingtechniques |
_version_ |
1792491364546510848 |