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The parasitoid Trichogrammatoidea armigera Nagaraja (Hymenoptera: Trichogrammatidae) is a potential candidate for biological control of the millet head miner Heliocheilus albipunctella (de Joannis) (Lepidoptera: Noctuidae) in the Sahel

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Relation http://oar.icrisat.org/10906/
http://dx.doi.org/10.1016/j.biocontrol.2018.08.003
10.1016/j.biocontrol.2018.08.003
 
Title The parasitoid Trichogrammatoidea armigera Nagaraja (Hymenoptera: Trichogrammatidae) is a potential candidate for biological control of the millet head miner Heliocheilus albipunctella (de Joannis) (Lepidoptera: Noctuidae) in the Sahel
 
Creator Karimoune, L
Ba, M N
Baoua, I B
Muniappan, R
 
Subject Pearl Millet
Sahel Region
 
Description Pearl millet, Pennisetum glaucum (L.) R. Br., is a crop grown
throughout West Africa, especially in the Sahel. Pearl millet is the major
staple food for the population of the Sahel, particularly for household
use. It is one of the world’s most resilient drought-tolerant cereal crops,
surviving even in the poorest soils in the driest regions and in the
hottest climates. Despite this extreme climatic adaptation, pearl millet
suffers from many biotic constraints, including insect pests (Nwanze
and Harris, 1992). Among these, the stem borer (MSB) Coniesta ignefusalis
(Hampson) (Lepidoptera: Crambidae) and the millet head miner
(MHM) Heliocheilus albipunctella (de Joannis) (Lepidoptera: Noctuidae)
are the major chronic insect pests of millet in the Sahel, including
Niger. The MSB develops on many species of the Poaceae family; in the
Sahel, it develops 2–3 generations per year on pearl millet during the
rainy season and diapauses in leftover pearl millet stems during the rest
of the year (Youm et al., 1996). The damage from C. ignefusalis is due to
the feeding of developing larvae in millet stalks; first generation larvae
cause dead hearts and stand loss, while the second and third generations
cause lodging, disruption of the vascular system, and inhibition of
grain formation (Harris, 1962; Youm et al., 1996). The MHM is a univoltine
and monophagous species, which develops on millet in the
Sahel during the rainy season between July and October and spends the
remainder of the season in diapause in the soil (Gahukar et al., 1986).
Infestations of H. albipunctella are more severe in the drier zones of the
Sahel (Nwanze and Harris, 1992). The damage from H. albipunctella is
due to larvae that feed on the panicle and prevent grain formation
(Nwanze and Harris, 1992). Almost every year, outbreaks of the MHM
are observed in the Sahel, especially on millet planted early or earlymaturing
cultivars, while millet planted later or late-maturing cultivars
is more affected by MSB (Gahukar et al., 1986; Youm et al., 1996). Both
insect pests inflict significant yield losses ranging from 15% to total
crop failure for C. ignefusalis (Harris, 1962; Ajayi, 1990) and from 40%
to 85% for H. albipunctella (Gahukar et al., 1986; Krall et al., 1995)...
 
Date 2018-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10906/1/The%20parasitoid%20Trichogrammatoidea.pdf
Karimoune, L and Ba, M N and Baoua, I B and Muniappan, R (2018) The parasitoid Trichogrammatoidea armigera Nagaraja (Hymenoptera: Trichogrammatidae) is a potential candidate for biological control of the millet head miner Heliocheilus albipunctella (de Joannis) (Lepidoptera: Noctuidae) in the Sahel. Biological Control (TSI), 127. pp. 9-16. ISSN 10499644