Original scientific paper

COMPARISON OF MAYETIOLA SPECIES ASSEMBLAGES AT DIFFERENT GEOGRAPHICAL SCALES: INFLUENCE OF HOST PLANT VARIATION

Maha Mezghani Khemakhem ; Faculté des Sciences de Tunis, Tunis
Hanem Makni ; Faculté des Sciences de Tunis, Tunis, Institut Supérieur de l' Animation pour la Jeunesse et la Culture de Bir Elbey
Mohamed Marrakchi ; Faculté des Sciences de Tunis, Tunis

Abstract

In Tunisia, two species of Mayetiola (M. destructor and M. hordei) have been identified on the basis of diagnostic alleles and PCR-RFLP of the cytochrome b gene. They are the major pests of wheat and barley responsible for serious crop losses. As these two species show feeding preferences between cereals, knowledge of the population dynamics of this phytophagous insect is needed in order to survey ecology and evolution of host parasite interaction. In this study, the PCR-RFLP technique based on the cytochrome b gene was used to identify the two species of Mayetiola and to investigate the relationships with their hosts. The comparison of Mayetiola assemblages on barley in different regions in Tunisia, showed a continual geographical gradient variation in species compositions and dominance order. However, on wheat there is a homogenous distribution. Thus, monitoring of pest must take into account our finding that population assemblage differs from host types and geographical location.

Keywords

Diptera; Cecidomyiidae; Mayetiola; Tunisie

Hrčak ID:

283908

URI

https://hrcak.srce.hr/283908

Publication date:

31.1.2003.

Article data in other languages: croatian

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