Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda

Bean leaf beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) are one of Africa’s most destructive pests of common bean and other leguminous crops. The beetles are widely distributed in Africa where they are estimated to cause annual crop yield losses of 116,400 tons of cr...

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Autores principales:	Charles Halerimana, Samuel Kyamanywa, Samuel Olaboro, Pamela Paparu, Stanley T. Nkalubo, John Colvin, Robert A. Cheke, Thomas Wagner, Susan E. Seal, Darren J. Kriticos, Michael H. Otim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	abundance agro-ecological zone common bean <i>Ootheca</i> spp. damage Science Q
Acceso en línea:	https://doaj.org/article/0571297bac6a4d1c8df5db2be3480f5f
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spelling	oai:doaj.org-article:0571297bac6a4d1c8df5db2be3480f5f2021-11-25T18:00:08ZDistribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda10.3390/insects121110482075-4450https://doaj.org/article/0571297bac6a4d1c8df5db2be3480f5f2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4450/12/11/1048https://doaj.org/toc/2075-4450Bean leaf beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) are one of Africa’s most destructive pests of common bean and other leguminous crops. The beetles are widely distributed in Africa where they are estimated to cause annual crop yield losses of 116,400 tons of crop yields in sub-Saharan Africa. Despite their importance, little is known about the distribution, relative abundance and damage caused by bean leaf beetles in Uganda. As a result, the development of effective management methods has been hampered. We conducted surveys in six key Ugandan agro-ecological zones to determine the species distribution and relative abundance of bean leaf beetles. Findings indicate that leaf beetles belonging to 12 genera are present, including members of the genera <i>Afrophthalma</i> Medvedev, 1980, <i>Buphonella</i> Jacoby, 1903, <i>Chrysochrus</i> Chevrolat in Dejean, 1836, <i>Diacantha</i> Dejean, 1845, <i>Exosoma</i> Jacoby, 1903, <i>Lamprocopa</i> Hincks, 1949, <i>Lema</i> Fabricius, 1798, <i>Nisotra</i> Baly, 1864, <i>Neobarombiella</i> Bolz and Wagner, 2012, <i>Ootheca</i> Dejean, 1935, <i>Parasbecesta</i> Laboissière, 1940, and <i>Plagiodera</i> Dejean, 1835. We identified only three species belonging to the genus <i>Ootheca</i>: <i>O. mutabilis</i>, <i>O. proteus</i>, and <i>O. orientalis</i>. Seventy percent of all the beetles collected were <i>O. mutabilis</i> and these were present in all agro-ecological zones studied. The Northern Moist Farmlands (21.9%), West Nile Farmlands (12.9%), Central Wooded Savanna (4.4%) and Southern and Eastern Lake Kyoga Basin (1.4%) were the only agro-ecological zones where <i>O. proteus</i> was found. Only one specimen of <i>O. orientalis</i> was found at a single site in the Central Wooded Savanna. The Northern Moist Farmlands had a significantly (<i>p</i> < 0.05) higher bean leaf beetle density than the West Nile Farmlands and Southwestern Highlands. Similarly, the Northern Moist Farmlands had the highest beetle foliar damage per plant (1.15 ± 0.05), while the Southwestern Highlands had the lowest (0.03 ± 0.02). We provide the first information on <i>Ootheca</i> species distribution, abundance and damage in Uganda. Our findings provide a foundation for assessing the importance of <i>Ootheca</i> spp. as common bean pests in Uganda.Charles HalerimanaSamuel KyamanywaSamuel OlaboroPamela PaparuStanley T. NkaluboJohn ColvinRobert A. ChekeThomas WagnerSusan E. SealDarren J. KriticosMichael H. OtimMDPI AGarticleabundanceagro-ecological zonecommon bean<i>Ootheca</i> spp.damageScienceQENInsects, Vol 12, Iss 1048, p 1048 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	abundance agro-ecological zone common bean <i>Ootheca</i> spp. damage Science Q
spellingShingle	abundance agro-ecological zone common bean <i>Ootheca</i> spp. damage Science Q Charles Halerimana Samuel Kyamanywa Samuel Olaboro Pamela Paparu Stanley T. Nkalubo John Colvin Robert A. Cheke Thomas Wagner Susan E. Seal Darren J. Kriticos Michael H. Otim Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda
description	Bean leaf beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) are one of Africa’s most destructive pests of common bean and other leguminous crops. The beetles are widely distributed in Africa where they are estimated to cause annual crop yield losses of 116,400 tons of crop yields in sub-Saharan Africa. Despite their importance, little is known about the distribution, relative abundance and damage caused by bean leaf beetles in Uganda. As a result, the development of effective management methods has been hampered. We conducted surveys in six key Ugandan agro-ecological zones to determine the species distribution and relative abundance of bean leaf beetles. Findings indicate that leaf beetles belonging to 12 genera are present, including members of the genera <i>Afrophthalma</i> Medvedev, 1980, <i>Buphonella</i> Jacoby, 1903, <i>Chrysochrus</i> Chevrolat in Dejean, 1836, <i>Diacantha</i> Dejean, 1845, <i>Exosoma</i> Jacoby, 1903, <i>Lamprocopa</i> Hincks, 1949, <i>Lema</i> Fabricius, 1798, <i>Nisotra</i> Baly, 1864, <i>Neobarombiella</i> Bolz and Wagner, 2012, <i>Ootheca</i> Dejean, 1935, <i>Parasbecesta</i> Laboissière, 1940, and <i>Plagiodera</i> Dejean, 1835. We identified only three species belonging to the genus <i>Ootheca</i>: <i>O. mutabilis</i>, <i>O. proteus</i>, and <i>O. orientalis</i>. Seventy percent of all the beetles collected were <i>O. mutabilis</i> and these were present in all agro-ecological zones studied. The Northern Moist Farmlands (21.9%), West Nile Farmlands (12.9%), Central Wooded Savanna (4.4%) and Southern and Eastern Lake Kyoga Basin (1.4%) were the only agro-ecological zones where <i>O. proteus</i> was found. Only one specimen of <i>O. orientalis</i> was found at a single site in the Central Wooded Savanna. The Northern Moist Farmlands had a significantly (<i>p</i> < 0.05) higher bean leaf beetle density than the West Nile Farmlands and Southwestern Highlands. Similarly, the Northern Moist Farmlands had the highest beetle foliar damage per plant (1.15 ± 0.05), while the Southwestern Highlands had the lowest (0.03 ± 0.02). We provide the first information on <i>Ootheca</i> species distribution, abundance and damage in Uganda. Our findings provide a foundation for assessing the importance of <i>Ootheca</i> spp. as common bean pests in Uganda.
format	article
author	Charles Halerimana Samuel Kyamanywa Samuel Olaboro Pamela Paparu Stanley T. Nkalubo John Colvin Robert A. Cheke Thomas Wagner Susan E. Seal Darren J. Kriticos Michael H. Otim
author_facet	Charles Halerimana Samuel Kyamanywa Samuel Olaboro Pamela Paparu Stanley T. Nkalubo John Colvin Robert A. Cheke Thomas Wagner Susan E. Seal Darren J. Kriticos Michael H. Otim
author_sort	Charles Halerimana
title	Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda
title_short	Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda
title_full	Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda
title_fullStr	Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda
title_full_unstemmed	Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda
title_sort	distribution and relative abundance of bean leaf beetles (<i>ootheca</i> spp.) (insecta: coleoptera: chrysomelidae) in uganda
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0571297bac6a4d1c8df5db2be3480f5f
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Distribution and Relative Abundance of Bean Leaf Beetles (<i>Ootheca</i> spp.) (Insecta: Coleoptera: Chrysomelidae) in Uganda

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