b r y o z o a : ORDOVICIAN TO RECENT Edited by Claus Nielsen & Gilbert P. Larwood BRYOZOA: ORDOVICIAN TO RECENT EDITED BY CLAUS NIELSEN & GILBERT P. LARWOOD Papers presented at the 6th International Conference on Bryozoa Vienna 1983 OLSEN & OLSEN, FREDENSBORG 1985 International Bryozoology Association dedicates this volume to the memory of MARCEL PRENANT in recognition o f the importance of his studies on Bryozoa Bryozoa: Ordovician to Recent is published by Olsen & Olsen, Helstedsvej 10, DK-3480 Fredensborg, Denmark Copyright © Olsen & Olsen 1985 ISBN 87-85215-13-9 The Proceedings of previous International Bryozoology Association conferences are published in volumes of papers as follows: Annoscia, E. (ed.) 1968. Proceedings of the First International Conference on Bryozoa. - Atti. Soc. ital. Sci. nat. 108: 4-377. Larwood, G.P. (cd.) 1973. Living and Fossil Bryozoa — Recent Advances in Research. — Academic Press (London). 634 pp. Pouyet, S. (ed.) 1975. Brvozoa 1974. Proc. 3rd Conf. I.B.A. - Docums Lab. Geol. Fac. Sci. Lvon, H.S. 3:1-690. Larwood, G.P. & M.B. Abbott (eds) 1979. Advances in Bryozoology. - Systematics Association, Spec. 13: 1-639. Academic Press (London). Larwood, G. P. «S- C. Nielsen (eds) 1981. Recent and Fossil Bryozoa. - Olsen & Olsen, Fredensborg, Denmark. 334 pp. Printed by Olsen £? Olsen CONTENTS Preface........................................................................................................................... viii Annoscia, Enrico: Bryozoan studies in Italy in the last decade: 1973 to 1982........ 1 Bigey, Françoise P.: Biogeography of Devonian Bryozoa ...................................... 9 Bizzarini, Fabrizio & Giampietro Braga: Braiesopora voigti n. gen. n.sp. (cyclo- stome bryozoan) in the S. Cassiano Formation in the Eastern Alps ( Italy).......... 25 Boardman, Richards. & Frank K. McKinney: Soft part characters in stenolaemate taxonomy ...................................................................................................................... 35 Brock, Brian ].: South Australian fouling bryozoans................................................... 45 Brown, George D., Jr. & Edward ]. Daly: Analysis of evolution of structural characters of Parvohallopora Singh from the Dillsboro Formation, Cincinna­ tian Series, Indiana ................................................................................................. 51 Carson, Renate: Bryozoans of Northumberland Strait, Gulf of St. Lawrence ... 59 Cheetham, Alan H.: Patterns of morphologic change in Late Tertiary cheilostome bryozoans from the Dominican Republic:Metrarabdotos revisited........................ 65 Colon-Urban, Rita D. & George B. Stefano: Behavioral effects of morphine on several species of bryozoans........................................................................................ 67 Cook, Patricia L. & Pantelakis J. Chimonides: Larval settlement and early asto- geny of Parmularia (Cheilostomata).......................................................................... 71 Сиffey, Roger J. & Anthony V. Sorrentino: Globular Ceriopora species (Cyclo- stomida, Bryozoa) from the Virginia-Carolinas Pliocene, and the status of Atelesopora................................................................................................................ 79 Dick, Matthew H. & June R.P. Ross: Intertidal cheilostome bryozoans in rock- pile habitat at Narrow Strait, Kodiak, Alaska ................................................... 87 Dyrynda, Peter E.J.: Functional allelochemistry in temperate waters: chemical defences of bryozoans............................................................................................. 95 Emscbermann, Peter: Factors inducing sexual maturation and influencing the sex determination of Barentsia discreta Busk (Entoprocta, Barentsiidae) .............. 101 Ghiurca, Virgile & Corinne Ghiurca: La contribution des hommes de science de l’Autriche aux études des bryozoaires de Roumanie............................................ 109 Grant, Alistair & Peter J. Hayward: Bryozoan benthic assemblages in the English Channel...................................................................................................................... 115 Hàkansson, Eckart & Judith E. Winston: Interstitial bryozoans: unexpected life forms in a high energy environment..................................................................... 125 Harmelin, Jean-Georges: Bryozoan dominated assemblages in Mediterranean cryptic environments............................................................................................... 135 Herrera, Yolanda A.: Pliocene Cheilostomata in the isthmus of the Tehuantepec Region (Mexico) ..................................................................................................... 145 d'Hondt, Jean-Loup: Digestive enzymatic activities in Alcyonidium polyoum (Hassall, 1841), Bryozoa Ctenostomida................................................................ 153 Jackson, Jeremy B.C. & Samuel P. Wertheimer: Patterns of reproduction in five common species of Jamaican reef-associated bryozoans................................... 161 Larwood, Gilbert P.: Form and evolution of Cretaceous myagromorph Bryozoa .. 169 VI Lidgard, Scott: Budding process and geometry in encrusting cheilostome bryo- zoans ......................................................................................................................... 175 Lutaud, Geneviève: Preliminary experiments on interzooidal metabolic transfer in anascan bryozoans ............................................................................................. 183 McKinney, Frank K. & Richard S. Boardntan: Zooidal biometry of Stenolaemata . 193 Moissette, Pierre: Encrusting bryozoans from two Messinian coral reefs of western A lgeria....................................................................................................................... 205 Nielsen, Claus: Ovicell formation in Tegella and four cellularioids (Bryozoa, Chei- Iostom ata)................................................................................................................. 213 Occhipinti Ambrogi, Anna: The zonation of bryozoans along salinity gradients in the Venice Lagoon (Northern Adriatic)........................................................... 221 Oda, Shuzitu dr Flideo Mukai: Fine surface structure of the statoblasts of higher phylactolaemate bryozoans ................................................................................... 233 Pisano, Eva & Andrea Balduzzi: Bryozoan colonisation along an infralittoral cliff in the Ligurian Sea (north-western Mediterranean)................................... 245 Rao, K.S., V. Agrawal, A.P. Diwan & P. Shrivastava: Studies on freshwater Bryo­ zoa. V. Observations on Central Indian materials ............................................. 257 Ross, June R.P.: Biogeography of Ordovician ectoproct (bryozoan) faunas .... 265 Schafer, Priska: Significance of soft part morphology in the classification of Recent tubuliporoid cyclostomes........................................................................... 273 Schopf, Thomas J.M.: A genomic library and the genome size for the cheilostome bryozoan Watersipora............................................................................................. 285 Soule, Dorothy F. & John D. Soule: Effects of oceanographic phenomena such as ‘El Nino’ on the zoogeography and endemism of tropical/subtropical Pacific W atersiporidae......................................................................................................... 293 Southwood, David A.: Ovicells in some Fenestrata from the Permian of N.E. England..................................................................................................................... 301 Taylor, Paul D.: Polymorphism in melicerititid cyclostomes ................................ 311 Thorpe, John P., David R.K. Clarke dr Michael A. Best: Natural variation in tentacle number in marine bryozoans and the possible effects of intraspecific and interspecific ecological competition for fo o d ............................................... 319 Voigt, Ehrhard: The Bryozoa of the Cretaceous-Tertiary boundary .................... 329 Abstracts of papers presented at the conference but not included in full in this volume: Agrawal, V. & K.S. Rao: On a report of the elemental composition of some Indian freshwater Ectoprocta......................................................................... 343 Best, Michael A. & John P. Thorpe: Feeding current velocity and rates of particle clearance in marine Bryozoa ........................................................... 343 Best, Barbara & Judith E. Winston: Zooid strength in encrusting cheilo- stomes ................................................................................................................ 344 Chaney, H.W.: Evidence of histocompatibility in the cheilostome bryozoan Thalamoporella californica Levinsen, 1909 ................................................. 344 Ernst, H.: Biomuration of folliculinids in Upper Cretaceous cheilostome B ryozoa.............................................................................................................. 345 Hdkansson, Eckart & Erik Thomsen: Clonal propagation in fossil cheilo- stomes ............................................................................................................... 345 Hillmer, G.: Convergent formation of comparable morphotypes of two cyclostomatous Bryozoans from the Cretaceous