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Some pratylenchids from Iran (Nematoda: Tylenchina)

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For more content, see Nematologica.

In a survey of the family Pratylenchidae from Iran three known species of the genera Hirschmanniella, Pratylenchoides and Zygotylenchus were found. Their similarities to and differences from closely related species, their distribution and their intraspecific variations are discussed. In some specimens of Zygotylenchus guevarai the spermatheca has numerous cells which may indicate a relationship of this genus with Meloidogyne. In Iranian populations of Pratylenchoides ritteri a vast range of morphological variations was observed. However, the head en-face view was the same for all populations. It seems that the pharyngeal terminal bulb contains more than three nuclei in most specimens. Hirschmanniella anchoryzae and P.ritteri which were studied by light microscopy (LM) and scanning electron microscopy (SEM) are reported for the first time from Iran.

Quelques Pratylenchides d'Iran (Nematoda: Tylenchina) - Lors d'une enquête sur la famille des Pratylenchidae en Iran, trois espèces connues des genres Hirschmanniella, Pratylenchoides et Zygotylenchus ont été trouvées. Leur ressemblances, différences avec les espèces très proches, leur répartition et leur variations intra spécifiques sont discutées. Chez quelques spécimens de Zygotylenchus guevarai, la spermathèque possède des cellules nombreuses, ce qui pourrait indiquer un relation de ce taxon avec le genre Meloidogyne. Chez les populations iraniennes de Pratylenchoides ritteri, une large gamme de variation morphologique a été observée. Cependant, la morphologie de l'extrémité antérieure était identique pour toutes les populations. Il semble que le bulbe pharyngien terminal contienne plus de trois noyaux dans la plupart des spécimens. Hirschmanniella anchoryzae et P.ritteri qui ont été étudiés en microscopie optique (LM) et électronique à balayage (SEM) sont signalés pour la première fois en Iran.

Affiliations: 1: Faculty of Agriculture, Tarbiat Modarres University, Tehran, Iran; 2: Instituut voor Dierkunde, Universiteit Gent, Ledeganckstraat 35, 9000 Gent, Belgium


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