Author(s)

Karine Moche^1*, Paul-Alain Nana^2,3, Liliane Tandzi Ngoune⁴, Champlain Djieto-Lordon⁵, Noé Woin¹, Télesphore Sime-Ngando³

¹Laboratory of Entomology, Institute of Agricultural Research for Development, Yaoundé, Cameroon.
²Department of Oceanography and Limnology, Institute of Fisheries and Aquatic Sciences, University of Douala, Douala, Cameroon.
³Laboratory Microorganisms: Genome and Environment (LMGE), Clermont Auvergne University, Clermont-Ferrand, France.
⁴Department of Agriculture, College of Basic and Apply Sciences, University of Ghana, Legon, Ghana.
⁵Laboratory of Zoology, Faculty of Science, University of Yaoundé, Yaoundé, Cameroon.

The study compares the impact due to rice stem borers in two sites (Yaoundé and Ntui). It also shows the diversity of the African Rice Gall Midge (AfRGM) biotypes in southern Cameroon (Santchou, Ndop, Tonga, Ebolowa, Ba?gom, Yaoundé and Ntui). The New Rice for Africa (NERICA) varieties 3, 8, 9 and 13 sown in Ntui were less attacked than those sown in Yaoundé. At both sites, damages ranged from 0.78% to 2.7%. In terms of diversity, the main stem-borer species were O. oryzivora, Diopsis apicalis, D. longiconis and Chilo zacconius. Molecular analyses of Orseolia oryzivora larvae collected in the localities of Santchou, Ndop, Tonga, Ebolowa, Ba?gom and Yaoundé showed the existence of more than one O. oryzivora biotype in southern Cameroon’s rice basins.

Biotype, Larvae, NERICA, Orseolia sp, PCR

Moche, K. , Nana, P. , Ngoune, L. , Djieto-Lordon, C. , Woin, N. and Sime-Ngando, T. (2020) Impact of Rice Stem Borers and Identification of Orseolia oryzivora Harris & Gagné, 1982 (Diptera: Cecidomyiidae) Biotypes in the Southern Cameroon. Agricultural Sciences, 11, 111-123. doi: 10.4236/as.2020.112007.