Abstract

In order to study the evolution of nematode vulva development, we focus on Oscheius/Dolichorhabditis sp. CEW1 (Rhabditidae) in comparison with Caenorhabditis elegans. In this species, the fates of the vulval precursor cells are determined by two successive nested inductions by the uterine anchor cell (instead of a single one in C. elegans). This hermaphroditic species can be cultured and handled like C. elegans. We review vulva development in this species. We present some molecular tools and the sequence of the Ras gene. This species is amenable to genetic analysis and we discuss the isolation of morphological markers. Afin d’étudier l’évolution du développement de la vulve des nématodes, nous nous concentrons sur l’espèce Oscheius/Dolichorhabditis sp. CEW1 (Rhabditidae) en la comparant à Caenorhabditis elegans. Dans cette espèce, les destinées des cellules précurseurs de la vulve sont déterminées par deux inductions emboîtées provenant de la cellule ancre de l’utérus (au lieu d’une seule chez C. elegans). Cette espèce hermaphrodite peut être élévée et manipulée comme C. elegans. Nous décrivons le développement de la vulve dans cette espèce. Nous présentons des outils moléculaires et la séquence du gène Ras. Les analyses génétiques sont possibles dans cette espèce et nous discutons l’isolement de marqueurs morphologiques.

In: Nematology
Authority and Control in the Countryside looks at the economic, religious, political and cultural instruments that local and regional powers in the late antique to early medieval Mediterranean and Near East used to manage their rural hinterlands. Measures of direct control – land ownership, judicial systems, garrisons and fortifications, religious and administrative appointments, taxes and regulation – and indirect control – monuments and landmarks, cultural styles and artistic models, intellectual and religious influence, and economic and bureaucratic standard-setting – are examined to reconstruct the various means by which authority was asserted over the countryside. Unified by its thematic and spatial focus, this book offers an array of interdisciplinary approaches, allowing for important comparisons across a wide but connected geographical area in the transition from the Sasanian and Roman to the Islamic period. Contributors: Arezou Azad and Hugh Kennedy, Sobhi Bouderbala, Michele Campopiano, Alain Delattre, Jessica Ehinger, Simon Ford, James Howard-Johnston, Elif Keser-Kayaalp, Marie Legendre, Javier Martínez Jiménez, Harry Munt, Annliese Nef and Vivien Prigent, Marion Rivoal and Marie-Odile Rousset, Gesa Schenke, Petra Sijpesteijn, Peter Verkinderen, Luke Yarbrough, Khaled Younes.
In: Authority and Control in the Countryside: From Antiquity to Islam in the Mediterranean and Near East (6th-10th Century)
In: Authority and Control in the Countryside: From Antiquity to Islam in the Mediterranean and Near East (6th-10th Century)
In: Authority and Control in the Countryside: From Antiquity to Islam in the Mediterranean and Near East (6th-10th Century)
In: Authority and Control in the Countryside: From Antiquity to Islam in the Mediterranean and Near East (6th-10th Century)
In: Authority and Control in the Countryside: From Antiquity to Islam in the Mediterranean and Near East (6th-10th Century)