REMBOLD, H.; Dr.rer.nat., Prof. - Dept. of Insect Biochem., Max-Planck-Inst. fiir Biochem., 8033 



MARTINSRIED b.Munchen, BRD (Germany) 

 RENKAWITZ, R.; Dr. - Inst, fur Allgem. Biol., Univ. Dusseldorf, Universitatsstr. 1, 4000 



DUSSELDORF, BRD (Germany) 

 a Expression of ribosomal DNA: are intervening sequences and "gap" sequences transcribed? (clon- 

 ing, sequencing, hybridization). Sciara coprophila (Diptera) 

 b Expression of lampbrush loops in spermatocytes (cloning, hybridization). Drosophila hydei (Dip- 

 tera) 

 RENKAWITZ-POHL, Ms. R.; Dr. - Inst, fur Allgem. Biol., Univ. Dusseldorf, Universitatsstr. 1, 4000 



DUSSELDORF, BRD (Germany) 

 a Are the two types of intervening sequences in the 28S rRNA coding DNA unique to certain cell 



types or are they restricted to one of the three rDNA clusters? Sciara coprophila (Diptera) 

 b Does compensated rDNA reflect the image of the uncompensated rDNA or are certain units 



selectively rephcated; do all tissues replicate the same rDNA during compensation? Drosophila 



hydei (Diptera) 

 RESSOUCHES (SELM£S), Ms. A. P.; Dr.biol.anim. - Lab. de Zool. Exp., Umv. de Bordeaux I, av. 



des Facultes, 33405 TALENCE, France 

 a Embryonic development. Pissodes spec. (Coleoptera) 

 b Ultrastructure of intracellular bacteroids. Same species as a 

 c Activity of the corpora allata in the embryo. Carausius spec. (Phasmida) (with A. HAGET and J. 



ROGUEDA) 

 REUM, L.; Dipl.-Chem. - Physiol.-Chem. Inst. I, Univ. Marburg, Deutschhausstr. 1-2, 3550 



MARBURG, BRD (Germany) 

 a Purification and chemical characterisation of metabolites of ecdysone. Calliphora erythrocephala 



(Diptera) 

 REVERBERI, G.; D.Sc, Prof. - Zool. Inst., Univ. of Palermo, Via Archirafi 18, 90123 PALERMO, 



Italy 

 a Effect of pederin on fusion of unfertilized eggs. (Ascidiacea) 

 RfivfiSZ-FERENCZY, Ms. E.; M.D. - Dept. of Anat., Div. of Appl. and Topogr. Anat., Univ. of 



Bern, 26 Buehlstr., CH-3012 BERN, Switzerland 

 REYNAUD, G. R.; D.Sc. - Lab. de Morphogen. Exp. et Caryol., Univ. de Provence - Centre St. 



Charles, place Victor Hugo, 13331 MARSEILLE Cedex 3, France 

 a fitude des relations entre soma et germen. (Aves) 

 REYSS-BRION (DUCREAU), Ms. M.; D.Sc. - Inst. d'Embryol. du C.N.R.S. et du Coll. de France, 



49bis av. de la Belle Gabrielle, 94130 NOGENT-sur-MARNE, France 

 a Differenciation sexuelle; inversion du sexe apres ovariectomie. Gallus gallus, Cotumix c. japonica 



(Aves) 

 RIBBERT, D.; Dr.rer.nat. - Zool. Inst, der Univ., Badestr. 9, 4400 MUNSTERAVestf., BRD (Ger- 

 many) 

 a RNA spectra in egg follicle development (radio-isotopes, electrophoresis). Calliphora erythro- 

 cephala (Diptera) 

 b Chromosome cytology of germ line cells (polytene chromosomes). (Calliphorinae, Muscidae, 



Diptera) 

 c Chromosome cytology of developing macrochaetes (trichogene cells). Same species as b 

 d SAT-DNA replication in experimentally induced polytene chromosomes of nurse cell nuclei of 



meroistic ovaries (hybridization technique). Same species as b 

 e Determination of DNA-complexity. Calliphora spec, Musca spec, Lucilia spec, Anomia spec. 



(Diptera) 

 f Synthesis, storage and consumption of template active RNA produced during oogenesis. CaUi- 



phora erythrocephala, Gnomia mortuorum (Diptera) 

 RICCA, Ms. M. B.; Dr. - Inst, of Zool. and Comp. Anat., Univ. of Messina, Via dei Verdi 75, 98100 



MESSINA, Italy 

 a Some aspects of the oocyte nucleolus. Amyclina comyculum, A. tinei (Gastropoda) 

 RICHARD-MERCIER, Ms. N. - Lab. Sex. et Reprod. des Invertebr., Univ. Paris VI (P. et M. Curie), 



Bat. A, 7e etage, 4 place Jussieu, 75230 PARIS Cedex 05, France 

 RICHTER, K. H.; Ph.D. - Orthop. Klinik, Univ. Marburg, Schutzenstr. 49, 355 MARBURG, BRD 



(Germany) 

 RICKENBACHER, J.; Dr.med., Prof. - Dept. of Anat., Histol., and Embryol., Univ. of Zurich, 



Gloriastr. 19, 8006 ZURICH, Switzerland 

 a Functional and morphological differentiation of circulatory system. Gallus gallus (Aves) 

 RICKWOOD, D.; Ph.D. - Dept. of Biol., Univ. of Essex, Wivenhoe Park, COLCHESTER, C04 3SQ, 



England 

 a Molecular aspects of development at the level of gene transcription. DictyosteUum discoideum 



(Acrasiales) ,. -,^^ -,• 



RIEHL, R.; Dr. - Forschungsgr. Hautklinik, Klin.Univers.-Anstalten, Neuenheimer Feld 324, Zimmer 



404, 6900 HEIDELBERG, BRD (Germany) 

 a Oogenesis, stages of oocytes, spermatogenesis (light, transmission and scanning electron micros- 

 copy, histo- and ultraliistochemistry). Branchiostoma lanceolatum (Cephalochordata) 

 b Oogenesis, stages of oocytes, egg envelopes, follicle epithelium, formation of yolk (light and 



electron microscopy, histochemistry, biochemistry). Heterandria formosa, Phoxinus phoxinus, 



Pomatoschistus minutus and other fresh water and marine spp. (Teleostei) 

 c Spermatogenesis, gonopodium development, hermaphroditism Gight and electron microscopy, 



histo-, ultrahisto- and enzyme histochemistry. X-ray analysis, modified method of Spalteholz). 



Heterandria formosa (Cyprinodontoidei, Teleostei) 



94 



