Table Of ContentRotifera VIII: A Comparative Approach
Developments in Hydrobiology 134
Series editor
H. J. Dumont
Rotifera VIII: A Comparative Approach
Proceedings of the Vlllth International Rotifer Symposium,
held in Collegeville, Minn., U.S.A., 22-27 June 1997
Edited by
E. Wurdak, R. Wallace and H. Segers
Reprinted from Hydrobiologia, volumes 387/388 (1998)
Springer-Science+Business Media, B.V.
Library of Congress Cataloging-in-Publication Data
International Rotifer Symposium (8th 1997 Collegeville. Minn.)
Rotifera VIII a comparative approach ! edited by E. Wurdak, R.
Wallace, and H. Segers.
p. cm. -- (Developments in hydrobiology ; 134)
ISBN 978-94-010-6009-7 ISBN 978-94-011-4782-8 (eBook)
DOI 10.1007/978-94-011-4782-8
1. Rotifera--Congresses. r. Wurdak, E. (Elizabeth) II. Wallace.
R. (Robertl, A.M. III. Segers, Hendrik. IV. ritle. V. Series.
QL391.R8I57 1997
592' .52--dc21 98-52160
ISBN 978-94-010-6009-7
Printed on acid-free paper
AII Rights reserved
© 1998 Springer Science+Business Media Dordrecht
Originally published by Kluwer Academic Publishers in 1998
Softcover reprint of the hardcover 1s t edition 1998
No part of the material protected by this copyright notice may be reproduced
or utilized in any form or by any means, electronic or mechanical,
including photocopying, record ing or by any information storage and
retrieval system, without written permission from the copyright owner.
Hydrobiologia 387/388: v-ix, 1998.
v
E. Wurdak, R. Wallace & H. Segers (eds), Rotifera VIII: A Comparative Approach.
Contents
Preface ............................................................................. xi-xii
Dedication: Birger Pej1er
by Elizabeth Wurdak, for the family of rotiferologists Xl11
List of participants and photo ........................................................ . xiv-xv
Part I. History of Rotifer Research
History of rotifer research in northern Europe
by B. Pejler ................................................................... 1-8
An analysis of taxonomic studies on Rotifera: a case study
by H. Segers .................................................................. 9-14
Part II. Taxonomy, Biogeography and Biodiversity
Zooplankton may not disperse readily in wind, rain, or waterfowl
by D.G. Jenkins & M.O. Underwood ........................................... . 15-21
Freshwater Rotifera of the genus Lecane from Songkhla Province, southern Thailand
by P. Pholpunthin & S. Chittapun ............................................... . 23-26
Rotifera of some freshwater habitats in the floodplain of the River Nan, northern Thailand
by L. Sanoamuang ............................................................ . 27-33
On a new species of Keratella (Rotifera: Monogononta: Brachionidae)
by Yan Zhuge & Xiangfei Huang ............................................... . 35-37
Floodplain biodiversity: why are there so many species?
by RJ. Shiel, J.D. Green & D.L. Nielsen ........................................ . 39-46
Rotifer diversity in a central Mexican pond
by S.S.S. Sarma & E.-G. Manuel ............................................... . 47-54
Rotifers new to Florida, U.S.A.
by P.N. Turner & H.L. Taylor .................................................. . 55-62
Dicranophoridae (Rotifera) from the Alps
by C.D. Jersabek .............................................................. . 63-77
Remarks on the rotifer fauna of north and northwestern Russia
by L.A. Kutikova ............................................................. . 79-82
VI
Part III. Phylogeny
Review paper: The evolutionary relationships of rotifers and acanthocephalans
by J.R Garey, A. Schmidt-Rhaesa, TJ. Near & S.A. Nadler. .. . . . . .. . . . . . .. . ... . . . . 83-91
Opinion paper: Are lemnisci and proboscis present in the Bdelloidea?
by C. Ricci. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 93-96
Numerical phenetic taxonomy and its heuristic aspects
by T. Nogrady ................................................................. 97--100
Phylogenetic relationships of phylum Rotifera with emphasis on the families of Bdelloidea
by G. Melone, C. Ricci, H. Segers & RL. Wallace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101--107
Cross-mating tests rediscovered: a tool to assess species boundaries in rotifers
by R Rico-Martinez ........................................................... 109-115
Part IV. Anatomy and Morphology
Preparation of rotifer trophi for light and scanning electron microscopy
byW.H.DeSmet .............................................................. 117-121
Stereopictures of internal structures and trophi of rotifers
by W. Kleinow ................................................................ 123-129
The rotifer corona by SEM
by G. Melone. . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131·-134
Catecholaminergic neurons in the brain of rotifers
by E.A. Kotikova .............................................................. 135-140
Part V. Ecosystem Ecology: Lentic Systems
Review paper: Rotifer responses to increased acidity: long-term patterns during the experi
mental manipulation of Little Rock Lake
by T.M. Frost, P.K. Montz, MJ. Gonzalez, B.L. Sanderson & S.E. Amott........... 141-152
Review paper: Rotifers in arctic North America with particular reference to their role in mi
croplankton community structure and response to ecosystem perturbations in Alaskan Arctic
LTERlakes
by P.A. Rublee ................................................................ 153-160
Rotifer vertical distribution in a strongly stratified lake: a multivariate analysis
by X. Armengol, A. Esparcia & M.R Miracle................ ....... ............. 161-170
Influence of environmental factors on the rotifer assemblage in an artificial lake
by M. Devetter ................................................................ 171-178
Rotifers in relation to littoral ecotone structure in Lake Rotomanuka, North Island, New
Zealand
by I.C. Duggan, J.D. Green, K. Thompson & RJ. Shiel............................ 179-197
Zooplankton succession and thermal stratification in the polymictic shallow Mtiggelsee (Ber-
lin, Germany): a case for the intermediate disturbance hypothesis?
by B. Eckert & N. Walz ........................................................ 199-206
Vll
Comparison of processes regulating zooplankton assemblages in new freshwater pools
by T.A. Holland & D.G. Jenkins................................... . .... . . . . . . . .. 207-214
Effects of turbidity and biotic factors on the rotifer community in an Ohio reservoir
by A.I. Pollard, MJ. Gonzalez, MJ. Vanni & J.L. Headworth ...................... 215-223
Differences in rotifer populations of the littoral and sub-littoral pools of a large marine lagoon
by A. Saunders-Davies ......................................................... 225-230
Part VI. Ecosystem Ecology: Lotic Systems
Review paper: Rotifers in interstitial sediments
by J.M. Schmid-Araya....................... ..... ..... . ....... . . . ....... . .. . . . 231-240
Effects of contrasting land use on free-swimming rotifer communities of streams in Masurian
Lake District, Poland
by J. Ejsmont-Karabin & M. Kruk ........................ . . . . . . . . . .... . . . . . . ... . 241-249
A study of rotifers in the River Thames, England, April-October, 1996
by L. May & lA.B. Bass......................................... . ............. 251-257
Planktonic rotifers of Samborombon River Basin (Argentina)
by B.E. Modenutti ............................................................. 259-265
Part VII. Chemical Ecology
Review paper: Chemical ecology of rotifers
by T.W. Snell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267-276
Differential sensitivity of Synchaeta and Daphnia to nucleosides from Anabaena affinis
by J.J. Gilbert ................................................................. 277-281
Toxicity of the Chrysophyte flagellate Poterioochromonas malhamensis to the rotifer Brachio
nus angularis
by J.E. Boxhorn, D.A. Holen & M.E. Boraas ..................................... 283-287
Influence of abiotic and biotic factors on morphological variation of Keratella cochlearis
(Gosse) in a small Andean lake
by M. Dieguez, B. Modenutti & C. Queimalifios .................................. 289-294
Part VIII. Autecology and Population Ecology
Diel variation in the egg ratio of Hexarthra bulgarica in the high mountain lake La Caldera
(Spain)
by L. Cruz-Pizarro, J.M. Conde-Porcuna & P. Carrillo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295-300
Strategic variation of egg size in Keratella cochlearis
by l Green. . . ... .. . . ........ .. ............... . . .. . . ........ .. . . . ...... ........ 301-310
Relative investment in offspring by sessile Rotifera
by R.L. Wallace, J.J. Cipro & R.W. Grubbs................. . . . . . . . . .............. 311-316
viii
The paradox of bdelloid egg size
by S. Orsenigo, C. Ricci & M. Caprioli .......................................... 317-320
Anhydrobiotic capabilities of bdelloid rotifers
by C. Ricci. . . . . . . . . . . . . ... . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . ... . . . . . . . . . . . . . . . . 321-326
Factors affecting long-term survival of dry bdelloid rotifers: a preliminary study
by A. Orstan .................................................................. 327-331
Some notes on Brachionus rotundiformis (Tschugunoft) in Lake Palaeostomi
by 1. Haberman & M. Sudzuki .................................................. 333-340
Effect of temperature and food concentration in two species of littoral rotifers
by LA. Perez-Legaspi & R. Rico-Martinez....................................... 341-348
Population growth in planktonic rotifers. Does temperature shift the competitive advantage
for different species?
by C.-P. Stelzer ................................................... . . . . . . . . . . . . . 349-353
Carbon content of some freshwater rotifers
by LV. Telesh, M. Rahkola & M. Viljanen ........................................ 355-360
Part IX. Population Genetics
Review paper: Seasonal variation as a determinant of population structure in rotifers reprodu
cing by cyclical parthenogenesis
by C.E. King & M. Serra.......................................... ............. 361-372
Review paper: Ecological genetics of Brachionus
by M. Serra, A. Gomez & MJ. Carmona ......................................... 373-384
Enzyme electrophoresis: its application to rotifers
by A Gomez .................................................................. 385-393
Measurements of the genome size of the monogonont rotifer Brachionus plicatilis and of the
bdelloid rotifers Philodina roseola and Habrotrocha constricta
by D.M. Welch & M. Meselson ................................................. 395-402
Karyotypes of bdelloid rotifers from three families
by J.L.M. Welch & M. Meselson ................................................ 403-407
Part X. Trophic Interactions
Does the evasive behavior of Hexarthra influence its competition with cladocerans?
by A. Kak & T. R. Rao ......................................................... 409-419
Colony size in Conochilus hippocrepis: defensive adaptation to predator size
by M. Dieguez & E. Balseiro ................................................... 421-425
Spatial segregation between rotifers and cladocerans mediated by Chaoborus
by M.J. Gonzalez............... .................................. ............. 427-436
Morphotype-specific predation in the trimorphic rotifer Asplanchna silvestrii
by S.E. Hampton.............................................................. 437-444
Uptake of latex beads as size-model for food of planktonic rotifers
by D. Ronneberger ............................................................. 445-449
IX
Part XI. Applied Studies and Aquaculture
Ecology versus taxonomy: is there a middle ground?
by D.L. Nielsen, RJ. Shiel & FJ. Smith............. ..... ... . . . . . . . ... . .. . .. ..... 451--457
Ecological water quality assessment of the Butgenbach lake (Belgium) and its impact on the
River Warche using rotifers as bioindicators
by Y. Marneffe, S. Comblin & l-P' Thome ....................................... 459--467
Size-structure dynamics of the rotifer chemostat: a simple physiologically structured model
by IN. McNair, M.E. Boraas & D.B. Seale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469--476
Rotifer size distribution changes during transient phases in open cultures
by M.E. Boraas, D.B. Seale, lE. Boxhorn & J.N. McNair.... . . . . . . . ..... . . . ....... 477--482
Influence of the food ration and individual density on production efficiency of semicontinuous
cultures of Brachionus-fed microalgae dry powder
by N. Navarro & M. YUfera ...... ..... . ... ...... . .................. . ........... . 483--487
Effect of water viscosity on the population growth of the rotifer - Brachionus plicatilis
Muller
by A. Hagiwara, N. Yamamiya & A. Belem de Araujo................ . ............ 489--494
Probiotic culture of the rotifer Brachionus plicatilis
by H. Hirata, O. Murata, S. Yamada, H. Ishitani & M. Wachi ....................... 495--498
Hydrobiologia 387/388: xi-xii, 1998.
Xl
E. Wurdak, R. Wallace & H. Segers (eds), Rotifera VIII: A Comparative Approach.
Preface
The VIIIth International Rotifer Symposium was organized by Elizabeth S. Wurdak at St. John's University in
Collegeville, Minnesota, USA during the week of June 22, 1997. It was the first rotifer symposium held outside
Europe. Ninety-seven participants from 22 countries distributed over 4 continents attended.
Following the tradition of earlier symposia, the conference was divided into oral sessions, poster sessions and
workshops. Contributions were initially grouped into ecological studies, population structure, genetics, mating,
phylogeny, biogeography, systematics, habitat, life history, biotechnology, culture, and cell biology. Morning and
afternoon sessions began with an invited review followed by individual presentations of recent research findings.
The presentations were punctuated by discussions over coffee. Home movies of rotifer behavior were screened in
the evening amidst lively talk and amusement over the antics of male brachionids.
At the mid-week banquet the assembled rotiferologists paid their respect to two international-known scientists
for their long-term commitment to research on rotifers: Professors Ludmillia Kutikova (Russia) and Birger Pejler
(Sweden). Dr Kutikova was present and accepted, with much graciousness, a certificate of achievement and the
brief speech made by Bob Wallace on her behalf. The family of rotiferologists provided a hardy round of applause.
A similar tribute to Dr Pejler, who because of a sudden illness had to cancel his plans to attend the meetings,
follows this preface.
During breaks and after formal sessions participants were free to explore the lakes, woodlands and prairie which
surround St. John's University and to enjoy the hospitality offered by Br. Willie's Pub, the SJU summer events staff
and the City of St. Cloud. Highlights of the meeting, other than the presentations, were the Mississippi River cruise
on board the Anne Bonnie, picnic at the Stearns County Park along the River, banquet and dance at the College of
Saint Benedict, post -conference excursions to Lake Itasca State Park and the Twin Cities of Minneapolis and Saint
Paul.
The success of the conference was a result of the hard work of the organizers, the exemplary cooperation of the
participants, financial support from private donors, industry (i.e., Aquaculture Systems®, Chlorella Industries®)
and assistance from the CSB/SJU Biology Department and the Science Hall Secretarial Staff.
Many things have changed since the previous rotifer meeting. Rotifers have gone into space and, unlike earlier
symposia, the VIIlth Rotifer Symposium was somewhat unique in that it had a unifying theme, the comparative
approach, which can be traced through the contributions included in this volume. Following we highlight some
examples of this theme within specific papers.
In an invited review, microplankton responses to habitat disturbance in arctic lakes are compared to their
responses in temperate lakes for which more extensive data are available. In another contribution the effects of
disturbance on the rotifer community within an experimental lake are documented and the progress of recovery after
habitat restoration is followed. Manipulated and unmanipulated lakes in the same geographical area are contrasted.
The effect of colonization history and nutrient levels on zooplankton assemblages are explored in separate reports.
Several studies examine spatial and temporal variability in rotifer abundance, and community structure in relation
to variations in biotic and abiotic factors along gradients in natural settings, others approach these questions
in an experimental way. Population responses to diet and chemical signals are tested in the field and through
manipulation of laboratory cultures. The reproductive strategy of different rotifer taxa is investigated, by attempts
to correlate egg size with life history parameters in order to evaluate the adaptive merits of large versus small eggs.
The status of various rotifer taxa and species boundaries are reexamined in the light of results obtained by the most
recent biochemical and molecular approaches, and other modern techniques (scanning electron microscopy, and
cladistics and numerical techniques). The broader issue of the relationships of the Rotifera to other invertebrate
taxa is taken up in a number of provocative papers. The distribution of Rotifera in remote geographical regions
is explored by several authors. All these papers reflect the wide diversity of approaches, methods of analysis and
conclusions that have been the hallmark of the rotifer symposia since their inception.
