Ronald Sluys

Ronald Sluys

"I wish to contribute to our knowledge on the world-wide taxic biodiversity and evolution of freshwater, marine and terrestrial planarians (Platyhelminthes, Tricladida).”

Keywords

biogeography, biodiversity, platyhelminthes, systematics, taxonomy, tricladida

Ronald Sluys

Research Associate
Taxonomy & systematics

ronald.sluys@naturalis.nl
+31 (0)71 7519263 

Research
interest

In general I wish to contribute to our knowledge on the world-wide taxic biodiversity and evolution of freshwater, marine and terrestrial planarians (Platyhelminthes, Tricladida).

The geographic scale of my research is generally global or at least concerns major parts of the globe. Assessments of global biodiversity hotspots are biased in that the less charismatic invertebrates, such as flatworms, are generally neglected, although invertebrates form the major component of biodiversity.

 Although this is interesting in itself, these animals may also be good model organisms to study terrestrialization during evolution. The terrestrialization of animal life from marine or freshwater ancestors is a key transition during the history of life. Planarian flatworms (Platyhelminthes, Tricladida) form an ideal group of model organisms to study this colonization of the land because they have freshwater, marine, and terrestrial representatives. 

The methodology concerns an integrative approach to taxonomy, systematics and phylogenetics, mostly combining morphology/anatomy with molecular characters. 

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Career

Starting out as a fledgling bird watcher at the age of seven years old, while rowing in my little boat among the marshes and meadows north of Amsterdam,  I did eventually graduate at the University of Amsterdam, majoring in ornithology. However, at the end of my Master’s I came also across the group of triclad flatworms, to which I switched my scientific and professional attention. Although I will never cease watching birds,  it dawned on me that invertebrates actually constitute the major part of biodiversity and that much remains to be discovered about their taxic diversity.  And therefore I took on triclad flatworms as model organisms to study the evolution, phylogeny and biogeography of a selected group of invertebrate animals.

  • MSc, University of Amsterdam: 23-IX-1981
  • PhD, University of Amsterdam: 30-IX-1989
  • Until 1st January 2012: Assistant Professor and Researcher at the Institute for Biodiversity and Ecosystem Dynamics and the Zoological Museum of the University of Amsterdam.
  • From 1st January 2012 – 2nd August 2016: Assistant Professor and Researcher at Naturalis Biodiversity Center, Leiden
  • From 2nd August 2016 - Present: Emeritus Senior Researcher & Research Associate at Naturalis Biodiversity Center, Leiden

Collaborations
and collections

Collaborations

Major research groups already cooperating with NBC on the study of triclad flatworms are: Max Planck Institute of Molecular Cell Biology and Genetics (Dresden, Germany); Departament de Genètica, Facultat de Biologia and Institut de Recerca de la Biodiversitat, Universitat de Barcelona (Barcelona, Spain); Museum of Comparative Zoology & Department of Organismic and Evolutionary Biology, Harvard University (Cambridge, USA); University of Sassari (Sardinia, Italy).

Collections

Platyhelminthes, Tricladida.

In the
media

Movie clip link to lecture Ronald Sluys

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Publications

​​​​​​2018

Journals SCI, peer-reviewed

  • Leria L., Sluys R., Riutort M. 2018. Diversification and biogeographic history of the Western Palearctic freshwater flatworm genus Schmidtea (Tricladida: Dugesiidae), with a redescription of Schmidtea nova. Journal of Zoological Systematics and Evolutionary Research 56: 335-351.
  • Yang H.-M., Sluys R., Kawakatsu M., Min G.-S. 2018. New molecular sequences for two genera of marine planarians facilitate determination of their position in the phylogenetic tree, with new records for two species (Platyhelminthes, Tricladida, Maricola). ZooKeys 781: 1-17.
  • Sluys R., Vila-Farré M., Rink J., Rasko J.E.J. 2018. An intriguing, new planarian species from Tasmania, with a discussion on protandry in triclad flatworms (Platyhelminthes, Tricladida). Acta Zoologica 99: 404-414.

Chapters in books

  • Sluys R., Riutort M. 2018. Planarian diversity and phylogeny. Methods in Molecular Biology 1774: 1-56: Humana Press, Springer Science+Business Media.
  • Winsor L., Sluys R. 2018. Basic histological techniques for planarians. Methods in Molecular Biology 1774: 285-351: Humana Press, Springer Science+Business Media,

2017

Journals SCI, peer-reviewed

Journals non-SCI, peer-reviewed

  • Sluys R. 2017. Invasion der Plattwuermer. Spektrum der Wissenschaft 5.17: 32-38.
  • Sluys R. 2017. La invasion de las planarias. Investigacion y Ciencia Mayo 2017: 77-86.
  • Sluys R., Stocchino G.A. 2017. Bipolarity in planarians is not induced by space travel. 4: 153-155.

2016

Journals SCI, peer-reviewed

2015

Journals SCI, peer-reviewed

2014

Journals SCI, peer-reviewed

2013

Journals SCI, peer-reviewed

2012

Journals SCI, peer-reviewed

2011

Journals SCI, peer-reviewed

2010

Journals SCI, peer-reviewed

2009

Journals SCI, peer-reviewed

Journals non-SCI, peer-reviewed

  • Sluys R., Smolders I., Kawakatsu M., Pietsch T.W., Kuranishi R.B. 2009. Freshwater planarians (Platyhelminthes: Tricladida: Planariidae) from the Kuril Islands and Kamchatka. Species Diversity 14: 307-322.

2008

Journals SCI, peer-reviewed

Journals non-SCI, peer-reviewed

  • Vila-Farré M., Romero R., Sluys R., Fernàndez J. 2008. Ecology, karyology, and anatomy of the planarian Pentacoelum hispaniense Sluys, 1989 (Platyhelminthes, Tricladida). Graellsia 64: 45-54.

2007

Journals SCI, peer-reviewed

2006

Journals SCI, peer-reviewed

Journals non-SCI, peer-reviewed

  • Sluys R., Kawakatsu M., Bleeker J. 2006. The Kawakatsu Collection incorporated within the collections of the Zoological Museum Amsterdam. Berichte des Naturwissenschaftlichen-Medizinischen Verein Innsbruck Suppl. 16: 89.
  • Vila-Farré M., Mateos E., Sluys R., Romero R. 2006. Preliminary data on the status of triclad flatworms in Spain. Berichte des Naturwissenschaftlichen-Medizinischen Verein Innsbruck Suppl. 16: 96.

2005

Journals SCI, peer-reviewed

Journals non-SCI, peer-reviewed

  • Sluys R., Kawakatsu M. 2005. A replacement name for Ichthyophaga Syromiatnikova, 1949 (Platyhelminthes: Prolecithophora), with a nomenclatural analysis of its avian senior homonym. Species Diversity 10: 63-68.
  • Wu S.-K., Kawakatsu M., Lue K.-Y., Lee J.-D., Tsai C.-L., Lin H.-H., Sluys R., Sasaki G.-Y. 2005. A preliminary study on land planarians of Taiwan. Endemic Species Research (Taiwain) 7: 23-40.

Chapters in books

  • Sluys R. 2005. Platwormen (Platyhelminthes). 114-120:

2004

Journals SCI, peer-reviewed

2002

Chapters in books

  • Sluys R. 2002. Heen en weer: bereisde platwormen. 35:

2001

Journals SCI, peer-reviewed

  • Kawakatsu M., Sluys R., Timoshkin O.A., Naumova T.V., Nishino M., Takai M. 2001. Redescription of Japanese Bdellocephala annandalei from Lake Biwa-ko with comparative redescription of the Far Eastern and Kamchatkan Bdellocephala species (Tricladida, Paludicola). Belgian Journal of Zoology 131: 205-211.
  • Ogren R.E., Sluys R. 2001. The genus Humbertium gen. nov., a new taxon of the land planarian family Bipaliidae (Tricladida, Terricola). Belgian Journal of Zoology 131: 201-204.
  • Sluys R., Kawakatsu M., Timoshkin O.A. 2001. Taxonomic redescription of Phagocata sibirica and comparison with Phagocata vivida (Tricladida, Paludicola). Belgian Journal of Zoology 131: 193-199.

Journals non-SCI, peer-reviewed

  • Sluys R., Kawakatsu M. 2001. Contribution to an inventory of the freshwater planarians of Australia and New Zealand (Platyhelminthes, Tricladida, Dugesiidae), with distribution maps of the species examined. Beaufortia 51: 163-198.

Chapters in books

  • Sluys R. 2001. Towards a phylogenetic classification and characterization of dugesiid genera (Platyhelminthes, Tricladida, Dugesiidae): A morphological perspective. 57-73:

2000

Journals non-SCI, peer-reviewed

  • Sluys R., Kawakatsu M. 2000. New, southermost record of Paucumara trigonocephala (Platyhelminthes, Tricladida, Maricola) from Queensland, with documentation of earlier records from Japan. Queensland Naturalist 38: 24-30.

1999

Journals SCI, peer-reviewed

  • Sangster G., Hazevoet C.J., Berg A.B. van den, Roselaar C.S.K., Sluys R. 1999. Dutch avifaunal list: Species concepts, taxonomic instability, and taxonomic changes in 1977-1998. Ardea 87: 139-166.
  • Tekaya S., Sluys R., Zghal F. 1999. Cocoon production, deposition, hatching, and embryonic development in the marine planarian Sabussowia dioica (Platyhelminthes, Tricladida, Maricola). Invertebrate Reproduction and Development 35: 215-223.
  • Sluys R. 1999. Global diversity of land planarians (Platyhelminthes, Tricladida, Terricola): a new indicator-taxon in biodiversity and conservation studies. Biodiversity and Conservation 8: 1663-1681.
  • Gibbons M.J., Sluys R. 1999. The taxonomic richness of South Africa's marine fauna: a crisis at hand. South African Journal of Science 95: 8-12.

1998

Journals SCI, peer-reviewed

  • Ogren R.E., Sluys R. 1998. Selected characters of the copulatory organs in the land planarian family Bipaliidae and their taxonomic significance (Tricladida: Terricola). Hydrobiologia 383: 77-82.
  • Sluys R., Timoshkin O.A., Kawakatsu M. 1998. A new species of giant planarian from Lake Baikal, with some remarks on character states in the Dendrocoelidae (Platyhelminthes, Tricladida, Paludicola). Hydrobiologia 383: 69-75.
  • Sluys R., Kawakatsu M., Winsor L. 1998. The genus Dugesia in Australia, with its phylogenetic analysis and historical biogeography (Platyhelminthes, Tricladida, Paludicola). Zoologica Scripta 27: 273-289.
  • Caceres-Martinez J., Vasquez-Yeomans R., Sluys R. 1998. The turbellarian Urastoma cyprinae from edible mussels Mytilus galloprovincialis and Mytilus californianus in Baja California, NW Mexico. Journal of Invertebrate Pathology 72: 214-219.
  • Sluys R. 1998. Land planarians (Platyhelminthes, Tricladida, Terricola) in biodiversity and conservation studies. Pedobiologia 42: 490-494.

1997

Journals SCI, peer-reviewed

  • Sluys R. 1997. An old problem in a new perspective: The enigmatic evolutionary relationships of some Australian freshwater planarians (Platyhelminthes, Tricladida, Paludicola). Canadian Journal of Zoology - Revue Canadienne de Zoologie 75: 459-471.
  • Sluys R., Hauser J., Wirth Q.J. 1997. Deviation from the Groundplan: A unique new species of freshwater planarian from South Brazil (Platyhelminthes, Tricladida, Paludicola). Journal of Zoology 241: 593-601.
  • Tekaya S., Sluys R., Zghal F. 1997. Sperm transfer and fertilization in the marine planarian Sabussowia dioica (Platyhelminthes, Tricladida, Maricola). International Journal of Invertebrate Reproduction and Development 32: 143-147.

1996

Journals SCI, peer-reviewed

  • Sluys R. 1996. Reconsiderations of the species status of some South American planarians (Platyhelminthes, Tricladida). Proceedings of the Biological Society of Washington 109: 229-235.
  • Sluys R. 1996. The notion of homology in current comparative biology. Journal of Zoological Systematics and Evolutionary Research 34: 145-152.

Journals non-SCI, peer-reviewed

  • Cáceres-Martinez J., Vásquez-Yeomans R., Sluys R. 1996. Urastoma cyprinae in natural and cultured Mussel (Mytilus galloprovincialis Lmk) populations in México. Bulletin of the European Association of Fish Pathologists 16: 200-202.

1995

Journals SCI, peer-reviewed

  • Sluys R. 1995. Platyhelminths as paleogeographic indicators. Hydrobiologia 305: 49-53.
  • Sluys R., Ribas M., Baguna J. 1995. Taxonomy, ecology, and karyology of a new species of Phagocata from Spain, with a discussion on the phylogenetic systematics of the genus Phagocata s.l. (Platyhelminthes, Tricladida, Paludicola). Canadian Journal of Zoology - Revue Canadienne de Zoologie 73: 557-568.

Journals non-SCI, peer-reviewed

  • Sluys R., Kawakatsu M. 1995. Taxon names of the Tricladida Maricola (Platyhelminthes): additions and emendations. Bulletin Zoölogisch Museum, Universiteit van Amsterdam 14: 153-160.
  • Sluys R., Joffe B., Cannon L.R.G. 1995. An alien flatworm in Australian waters. Memoirs of the Queensland Museum 38: 642.

Chapters in books

  • Sluys R., Schalk P.H., Schram F.R. 1995. Systematic Cirripedology in the 21st century: multimedia biodiversity information systems. 43-48:

1994

Journals SCI, peer-reviewed

  • Robledo J.A.F., Caceres-Martinez J., Sluys R., Figueras A. 1994. The parasitic turbellarian Urastoma cyprinae (Platyhelminthes, Urastomidae) from blue mussel Mytilus galloprovincialis in Spain - occurrence and pathology. Diseases of Aquatic Organisms 18: 203-210.
  • Sluys R. 1994. Explanations for biogeographic tracks across the Pacific Ocean - a challenge for paleogeography and historical biogeography. Progress in Physical Geography 18: 42-58.

1993

Journals SCI, peer-reviewed

  • Estep K., Sluys R., Syvertsen E.E. 1993. "Linnaeus" and beyond: workshop report on multimedia tools for the identification and database storage of biodiversity. Hydrobiologia 269: 519-525.

1992

Journals SCI, peer-reviewed

  • Sluys R. 1992. A synopsis of Antarctic Plagiostomids (Platyhelminthes, Prolecithophora), with the description of a new species and remarks on taxonomy, phylogeny, and biogeography. Polar Biology 12: 507-518.
  • Sluys R., Benazzi M. 1992. A new finding of a subterranean endrocoelid flatworm from Italy (Platyhelminthes, Tricladida, Paludicola). Stygologia 7: 213-217.

Journals non-SCI, peer-reviewed

  • Sluys R. 1992. Synopsis of the freshwater triclads of the Caribbean (Platyhelminthes, Tricladida, Paludicola). Studies on the Natural History of the Caribbean Region 71: 1-23.

1991

Journals SCI, peer-reviewed

  • Vries E.J. de, Sluys R. 1991. Phylogenetic relationships of the genus Dugesia (Platyhelminthes, Tricladida, Paludicola). Journal of Zoology 223: 103-116.
  • Sluys R. 1991. Species concepts, process analysis, and the hierarchy of nature. Experientia 47: 1162-1170.
  • Sluys R., Rohde K. 1991. A new species of freshwater triclad from Australia (Platyhelminthes, Tricladida, Paludicola). Zoological Journal of the Linnean Society 102: 153-162.

1990

Journals SCI, peer-reviewed

  • Rohde K., Watson N., Sluys R. 1990. Ultrastructure of the flame bulbs and protonephridial capillaries of Romankenkius sp. (Platyhelminthes, Tricladida, Dugesiidae). Journal of Submicroscopic Cytology and Pathology 22: 489-496.
  • Sluys R., Riutort M., Ribas M., Baguna J. 1990. On Pentacoelum hispaniensis, a marine triclad from Spanish fresh-water (Platyhelminthes, Tricladida, Maricola). Hydrobiologia 199: 101-106.
  • Sluys R. 1990. A monograph of the Dimarcusidae (Platyhelminthes, Seriata, Tricladida). Zoologica Scripta 19: 13-29.

Journals non-SCI, peer-reviewed

  • Sluys R., Ball I.R. 1990. The aquatic triclads (Platyhelminthes, Tricladida) of the Bismarck Archipelago. Steenstrupia 16: 13-20.
  • Sluys R. 1990. On Bdellasimilis barwicki (Platyhelminthes, Tricladida) and its phyletic position. Invertebrate Taxonomy 4: 149-158.

1989

Journals SCI, peer-reviewed

  • Sluys R., Ginkel W. van 1989. New records of Fecampia abyssicola (Platyhelminthes, Rhabdocoela, Fecampiidae). Cahiers de Biologie Marine 30: 235-241.
  • Sluys R. 1989. Phylogenetic relationships of the triclads (Platyhelminthes, Seriata, Tricladida). Bijdragen tot de Dierkunde 59: 3-25.
  • Sluys R. 1989. Rampant parallelism - an appraisal of the use of nonuniversal derived character states in phylogenetic reconstruction. Systematic Zoology 38: 350-370.
  • Sluys R. 1989. Sperm resorption in triclads (Platyhelminthes, Tricladida). International Journal of Invertebrate Reproduction and Development 15: 89-95.

Journals non-SCI, peer-reviewed

  • Sluys R., Cannon L.R.G. 1989. A new species of marine triclad from the West Pacific (Platyhelminthes, Tricladida, Maricola). Invertebrate Taxonomy 3: 149-153.

Edited books

  • Sluys R. (eds.). 1989. A Monograph of the Marine Triclads. 480 p. A.A. Balkema, Brookfield, Rotterdam. ISBN 9789061918721.

1988

Journals SCI, peer-reviewed

  • Sluys R. 1988. On adaptation, the assessment of adaptations, and the value of adaptive arguments in phylogenetic reconstruction. Zeitschrift für Zoologische Systematik und Evolutionsforschung 26: 12-26.
  • Sluys R., Bush L.F. 1988. On Pentacoelum punctatum, an amphi-Atlantic marine triclad (Platyhelminthes, Tricladida, Maricola). Transactions of the American Microscopical Society 107: 162-170.
  • Sluys R., Vries E.J. de 1988. The aquatic triclads of the Crozet Islands (Platyhelminthes, Tricladida). Zoological Journal of the Linnean Society 94: 203-217.

Journals non-SCI, peer-reviewed

  • Sluys R. 1988. Structural and functional morphology within the genus Synsiphonium. Fortschritte der Zoologie 36: 413-417.
  • Sluys R., Ball I.R. 1988. A synopsis of the marine triclads of Australia and New Zealand (Platyhelminthes, Tricladida, Maricola). Invertebrate Taxonomy 2: 915-959.

1987

Journals SCI, peer-reviewed

  • Sluys R. 1987. The taxonomy of three species of the genus Procerodes (Platyhelminthes, Tricladida, Maricola). Journal of the Marine Biological Association of the United Kingdom 67: 373-384.

Edited books

  • Hovenkamp P., Gittenberger E., Hennipman E., Jong R. de, Roos M.C., Sluys R., Zandee M. (eds.). 1987. Systematics and Evolution: A Matter of Diversity. 341 p. Utrecht University, ISBN 9789090019673.

1986

Journals SCI, peer-reviewed

  • Sluys R. 1986. Taxonomic studies on marine triclads (Turbellaria, Tricladida, Maricola). Hydrobiologia 132: 257-262.

Journals non-SCI, peer-reviewed

  • Sluys R. 1986. First representative of the order Macrostomida in Australia (Platyhelminthes, Macrostomidae). Records of the South Australian Museum 19: 399-404.

1985

Journals non-SCI, peer-reviewed

  • Sluys R., Ball I.R. 1985. On Bothrioplana semperi from Australia, with a review of the species (Platyhelminthes, Proseriata, Bothrioplanidae). Beagle: Records of the museums and art galleries of the Northern Territory 2: 129-137.

Chapters in books

  • Sluys R. 1985. Various chapters (The Birds of the Western Palearctic, vol. IV). 182-183; 194-195; 206-207; 217-219; 228-229; 230; 242-243:

1984

Journals SCI, peer-reviewed

  • Sluys R., Jong H. de 1984. Chromosome morphological studies of Dugesia gonocephala s.l. (Platyhelminthes, Tricladida). Caryologia: International Journal of Cytology, Cytosystematics and Cytogenetics 37: 9-20.
  • Sluys R. 1984. The meaning and implications of genealogical tree diagrams. Zeitschrift für Zoologische Systematik und Evolutionsforschung 22: 1-8.

1983

Journals SCI, peer-reviewed

  • Sluys R. 1983. A new species of land planarian from Madeira (Platyhelminthes, Turbellaria, Tricladida). Journal of Zoology 201: 433-443.
  • Sluys R. 1983. Evidence for hybrid murre reconsidered. Auk 100: 236-237.
  • Sluys R. 1983. Geographical variation and distribution of the bearded tit Panurus-biarmicus (Linnaeus, 1758) (Aves). Bijdragen tot de Dierkunde 53: 13-32.
  • Sluys R. 1983. On a functional-morphological approach to phylogenetic reconstruction: a critique. Acta Biotheoretica 32: 29-41.
  • Sluys R. 1983. A new marine triclad ectoparasitic on Malaysian and Indonesian horseshoe crabs (Platyhelminthes, Turbellaria, Tricladida). Bijdragen tot de Dierkunde 53: 218-226.

Journals non-SCI, peer-reviewed

  • Sluys R., Ball I.R. 1983. On the status and identity of Procerodes warreni (Girard, 1850) (Turbellaria, Tricladida, Maricola). Mitteilungen aus dem Zoologischen Museum in Berlin 59: 3-10.

1982

Journals SCI, peer-reviewed

  • Sluys R., Berg M. van den 1982. On the specific status of the Cyprus pied wheatear Oenanthe-cypriaca. Ornis Scandinavica 13: 123-128.

Journals non-SCI, peer-reviewed

  • Sluys R. 1982. Bearded Tits Panurus biarmicus in The Netherlands and England: comments on the hybridization theory. Journal of Ornithology 123: 175-182.
  • Sluys R. 1982. Geographical variation of the Kittiwake Rissa tridactyla. Gerfaut: Revue Belge d'Ornithologie 72: 221-230.

1981

Journals non-SCI, peer-reviewed

  • Sluys R. 1981. Ostracods (Ostracoda, Crustacea) from two freshwater lakes near Maarssen, The Netherlands. Hydrobiological Bulletin: Netherlands Journal of Aquatic Ecology 15: 175-182.

1979

Journals non-SCI, peer-reviewed

  • Sluys R. 1979. Notes on the characters and synonymy of Physocypria kliei Schäfer, 1934 and Potamocypris unicaudata Schäfer, 1943 (Crustacea, Ostracoda). Bulletin Zoölogisch Museum, Universiteit van Amsterdam 6: 169-176.