%0 Journal Article
%T Comparative Morphometry of the <i>Sitophilus zeamais</i> Motschulsky Populations (Coleoptera: Curculionidae) Infesting Yellow Maize in Four West African Countries
%A Adiouma Georges Robert Jacques Sarr
%A Cheikh Abdou Khadre Mback¨¦ Dia
%A Toff¨¦ne Diome
%A Pape Mback¨¦ Sembene
%J Advances in Entomology
%P 85-98
%@ 2331-2017
%D 2022
%I Scientific Research Publishing
%R 10.4236/ae.2022.101007
%X <i><span style=\"font-family:Verdana;\">Sitophilus</span></i></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> <i>zeamais</i></span></span></span><span><span><span style=\"font-family:&quot;\"><span style=\"font-family:Verdana;\"> is a primary pest of stored maize, which can cause
quality and quantity losses. Maize is cultivated in several West African
countries where different agro-climatic and agro-ecological conditions exist.
These conditions could influence the </span><i><span style=\"font-family:Verdana;\">Sitophilus</span></i><span style=\"font-family:Verdana;\"> <i>zeamais</i></span><span style=\"font-family:Verdana;\"> morphology. Thus, the purpose of this study is
to identify the </span><i><span style=\"font-family:Verdana;\">Sitophilus</span></i><span style=\"font-family:Verdana;\"> <i>zeamais</i></span><span style=\"font-family:Verdana;\"> morphological groups in the four countries. This was carried out through the
morphometric study of 30 male </span><i><span style=\"font-family:Verdana;\">Sitophilus</span></i><span style=\"font-family:Verdana;\"> <i>zeamais</i></span><span style=\"font-family:Verdana;\"> individuals taken from the yellow maize in each
country, by measuring with a binocular magnifying glass, 16 variables of the
different tagmas belonging to the insect. Subsequently, statistical analyses
were firstly carried out with the raw measurements, such as the principal
component analysis, in order to extract the contribution of the variables on
each factorial axis and to visualise the correlations between the variables.
Taking the case of the transformed measurements, in addition to the principal
component analysis, a discriminant factorial analysis was carried out to find
out the best factor for gathering individuals according to their morphology, a
confusion matrix to summarise the individual</span></span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">¡¯</span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">s reclassification in order to deduce the good and
bad classification rates, and an ascending hierarchical classification which
consists of gathering the individuals according to their similarity and
separating them according to their dissimilarity using the truncation method.
Therefore, five morphological groups were identified. However, the existence of
these morphological groups would not be linked to
%K Morphological Groups
%K &lt
%K i&gt
%K Sitophilus zeamais&lt
%K /i&gt
%K Maize
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=114451