Effect Of Planting Time And Nitrogen Levels On Infestation Of Rice By African Rice Gall Midge Orseolia Oryzivora Harris And Gagné In Southeastern Nigeria

2008 ◽  
Vol 10 (1) ◽  
Author(s):  
EO Ogah ◽  
EO Okporie ◽  
LG Ekwu
Keyword(s):  
Gall Midge ◽  
Southeastern Nigeria ◽  
Planting Time ◽  
Nitrogen Levels ◽  
Orseolia Oryzivora ◽  
African Rice ◽  
Rice Gall Midge

An antixenosis component of rice resistance to African rice gall midge, Orseolia oryzivora

2009 ◽  
Vol 34 (0) ◽  
Author(s):  
FE Nwilene ◽  
O Okhidievbie ◽  
TA Agunbiade ◽  
AK Traore ◽  
LN Gaston ◽  
...  
Keyword(s):  
Gall Midge ◽  
Orseolia Oryzivora ◽  
African Rice ◽  
Rice Gall Midge

scholarly journals Comparative Study of the Morphology of the Ovipositor ofPlatygaster diplosisae(Hymenoptera: Platygasteridae) andAprostocetus procerae(Hymenoptera: Eulophidae) Two Parasitoids Associated with the African Rice Gall Midge,Orseolia oryzivora(Diptera: Cecidomyiidae)

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Souleymane Nacro ◽  
Jean-Pierre Nénon
Keyword(s):  
Resource Sharing ◽  
Gall Midge ◽  
Distal Portion ◽  
Life Stages ◽  
Orseolia Oryzivora ◽  
African Rice ◽  
Larval Host ◽  
Rice Gall Midge ◽  
Platygaster Diplosisae ◽  
Selection Of

We studied the morphology of the ovipositor ofPlatygaster diplosisae(Hymenoptera: Platygasteridae) andAprostocetus procerae(=Tetrastichus pachydiplosisae) (Hymenoptera: Eulophidae), two parasitoids associated with the African rice gall midge (AFRGM), andOrseolia oryzivora(Diptera: Cecidomyiidae). Scanning electron microscope techniques were used for this study. The ovipositor ofP. diplosisaewas short (40 μm), and most of the sensillae found on it were mechanoreceptors and located on the distal portion of the 3rd valvulae. These sensillae may be involved in selection of an egg or larval host. The shortness of this ovipositor may be an adaptation to a host whose egg envelope thickness is not more than 0.7 μm. The ovipositor ofA. proceraewas 30 times (1.2 mm) the length of theP. diplosisaeovipositor. It was not only well equipped with mechanoreceptive sensillae, but these sensillae were very diverse and distributed along the length of the valvulae. The 10 denticulations of the lancet of this ovipositor allow this parasitoid to exploit hosts that are not otherwise readily accesible. These two parasitoids share the same resource by infesting different life stages of the host. The ovipositor of each species of parasitoid enhanced resource sharing, due to its length and its sensillae type and distribution.

Orseolia oryzivora. [Distribution map].

1984 ◽  
Author(s):  
Keyword(s):  
Burkina Faso ◽  
Geographical Distribution ◽  
Ivory Coast ◽  
Gall Midge ◽  
Distribution Map ◽  
Orseolia Oryzivora ◽  
African Rice ◽  
Guinea Bissau ◽  
Rice Gall Midge ◽  
New Distribution

Abstract A new distribution map is provided for Orseolia oryzivora Harris & Gagné [Diptera: Cecidomyiidae] African rice gall midge. Attacks rice and probably related grasses, especially Oryza spp. Information is given on the geographical distribution in AFRICA, Benin, Burkina, Faso, Cameroon, Gambia, Guinea-Bissau, Ivory Coast, Malawi, Mali, Niger, Nigeria, Senegal, Sudan, Togo, Zambia.

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