Tasnimetti d yiwet n tussna i d-yessegzayen tugna ; ilmend n wansayen-is ,yesɛa azal d ameqqran deg usnerni n yidgen d ubeddel n wadeg akken I d yebder Baylon d Fabre (1993;19) I d yebder I.Ǧaber (2014.21)  tismidegt tesɛa assaɣ d yinig n yizerfan imaynuten aya ila azerrer deg ubeddel n yismawen n yidgen 1.5.4.Tasnalest