- Marine ecology & ecological parasitology
- Impact of species invasions and climate change
- Biodiversity and disease risk
- Parasite biogeography and macroecology
- Ecology of the Wadden Sea
Prof. Dr. David Thieltges
Parasites are an important part of biodiversity
David Thieltges is an ecologist investigating the role of parasites in ecosystems. ‘Parasites are still a relatively new research area for ecology. For a long time, the prevailing dogma was that parasites would not play a major role in ecology, but that view has now been abandoned. Obviously, parasites have direct effects on species. That was very clear, for example, during the outbreaks of the seal virus and with the high mortality of eider ducks at the turn of the century. Those ducks were found to be infected by a parasitic worm. In addition, parasites can cause more subtle and indirect effects. For example, if shellfish are affected by a parasite and are weakened or perish, this also has an effect on an entire ecosystem. Shellfish-eating birds then have less to eat, but those weakened shellfish also filter fewer algae from the water, which in turn has consequences for the rest of the system.’
Male crabs behave like females
‘Sometimes, the effects of parasites are quite bizarre. Male crabs that suffer from the parasitic crab hacker barnacle start to behave like egg-bearing females. They descend into deeper areas and fan water over the parasite on their belly as if it were an egg sac.’
More parasites indicate more diversity
‘Parasites are usually strongly dependent on specific hosts. A high diversity of parasites is therefore usually associated with a high biodiversity in general. So, in contrast to (veterinary) medicine, “many parasites” are therefore good news in ecology. Parasites only give rise to problems if the general diversity becomes too low. That knowledge has already been translated into new methods for fish farming. For example, salmon are no longer reared in a monoculture but in combination with other species that can keep the parasites at bay.’
‘In another part of my work, I examine the effects of climate change and species invasions on parasites. Due to southern species such as the seabass shifting northwards in relation to warming waters, or because we introduce exotic species ourselves, such as the Pacific oyster, new parasites are also entering our environment and can influence our ecosystems.’
Research interests
I am a marine ecologist with a soft spot for parasites. My research revolves around understanding the ecological role of parasites in marine ecosystems on various spatial and organizational scales.
Using lab and field experimental approaches, my research group studies the effects of parasites on marine host individuals, populations and communities. We are also interested in how parasites influence the topology and dynamics of food webs. Another line of research aims to understand the patterns and processes underlying infections of marine hosts. This includes work on the role of ambient biodiversity in affecting parasite transmission and disease risk as well as studies on the effects of global changes such as rising temperatures and biological invasions on marine parasites and their hosts. Finally, we study large-scale patterns of parasitism using literature-based datasets and biogeographical and macroecologial approaches in order to understand the forces that have shaped parasitism in the sea.
Functions
Since 2020: Honorary Professor 'Marine Parasite Ecology', University of Groningen (NL)
Since 2015: Lecturer in the Marine Biology MSc programme of the University of Groningen (NL)
Since 2014: Senior research scientist at NIOZ Royal Netherlands Institute of Sea Research (NL)
2010-2014: Research scientist at NIOZ Royal Netherlands Institute of Sea Research (NL)
2007-2010: DFG Postdoc fellowship at the University of Otago (NZ)
2006/2007: DAAD Postdoc fellowship at the Aarhus University (DK)
Publications
Please find a complete list of my NIOZ publications at the bottom of this webpage or on Web of Science. You can download pdfs of my publications on ResearchGate. I also have a Google Scholar and a Twitter account.
Please note:
Book chapter on 'Ecological Consequences of Parasite Invasions' in new book on Parasites and Biological Invasions by Jamie Bojko, Alison M Dunn, April M H Blakeslee (2023)
New book on cockle parasites and diseases: de Montaudouin et al. (2021) Catalogue of parasites and diseases of the common cockle Cerastoderma edule.
Opinion piece on effects of invasive species in the Wadden Sea (in Dutch, 2020) in Friesch Dagblad.
Book chapter in Beninger (ed.) Mudflat Ecology (2018): Thieltges, Mouritsen, Poulin (2018) Ecology of parasites in mudflat ecosystems. Click here for a pdf.
Special issue published in 2016 based on an international NIOZ–AWI symposium held on Texel NL from 10–14 March 2014: ‘Ecology and evolution of marine parasites and diseases’. Co-edited together with Mathias Wegner (AWI, D).
Trilateral (DK, D, NL) report describing and evaluating the current ecological status of the Wadden Sea: Wadden Sea Quality Status Report 2017. Contribution of thematic report and as member of Editorial Board.
Covered by others
Our work covered in WadWeten, a publication series on research in the Wadden Sea from the Waddenacademie and the Leeuwarder Courant (in Dutch)
Parasieten en wadplaten
Muiltje voorkomt voetinfectie bij mossel
Japanse oester kwam niet met lege handen aan
Our work covered in the press, radio and science blogs
General ecological role of parasites in ecosystems: Volkskrant
New invasive shell boring worm (Polydora websteri) in the Wadden Sea: Trouw, EarthCom, Scinexx, PZC, Leeuwarder Courant, NHNieuws, Vismagazine, Fischmagazin, Texelplaza
Virus predation by marine organisms: NRC, Scientias, Oceanbites, Sciencetimes, Focus.it, NewsweekJapan
Impact of Pacific oyster invasion on parasites and pathogens: DeVolkskrant, OmropFryslan (interview with Anouk Goedknegt, in Dutch)
Parasites in food webs: Parasite Ecology, The Stochastic Scientist, DownToEarth
Professional education
2018: BKO/UTQ (Basiskwalificatie Onderwijs/University Teaching Qualification), University of Groningen (NL)
2012-2013: Management Development Training, Leeuwendaal Instituut (NL)
2006: PhD in Ecology (summa cum laude), Christian Albrechts University Kiel & Alfred Wegener Institute for Polar and Marine Research, Wadden Sea Station Sylt (D)
1993-2001: MSc/Diplom in Biology (summa cum laude), major in zoology/ecology and minors in conservation biology, evolution & systematics and philosophy, Philipps University Marburg (D)
1996/97: Visiting student for an academic year (ecology, evolution, palaeontology and history of science), University of Edinburgh, Scotland
Awards and Prizes
2023 29th Petersen Excellence Professorship, Kiel (D)
2007: DFG Postdoc fellowship for a three years stay at the University of Otago (NZ)
2006: DAAD Postdoc fellowship for a 9 months stay at Aarhus University (DK)
Research Group
Cyril Hammoud - Postdoc. Project 'Assessing the spatial-temporal status and long-term trends of European fish parasite biodiversity' as part of EU Biodiversa+ project IMPACT Integrated Monitoring of Parasites in Changing Environments. In collaboration with Rachel Paterson (NINA, Norway) and Juan Antonio Balbuena (University of Valencia, Spain) and the IMPACT consortium.
Ana Born Torrijos - Postdoc. Marie Curie project 'Compound specific stable isotope analysis as a novel tool to unravel parasitic trophic interactions–PARAISO'. In collaboration with Philip Riekenberg & Marcel van der Meer (NIOZ) and Bernd Sures & Milen Nachev (University Duisburg-Essen, Germany).
Rosa Jolma - PhD candidate. Project 'Infectious diseases in a changing world: combining experimental data with eco-epidemiological models to understand the dynamics of parasite invasions under climate change'. In collaboration with Hans Heesterbeek (UU, NL) Mathias Wegner (AWI Sylt, DE), and Anieke van Leeuwen (NIOZ).
Haiyan He - PhD candidate. Project ‘Disease ecology and predation: unravelling consumptive and non-consumptive effects of predators on parasite-host interactions and population-level consequences’. In collaboration with Anieke van Leeuwen (NIOZ)
Lénia da Fonseca Alexandre Rato - PhD student (co-supervised). Project 'An integrated approach to unravel the adaptation potential and environmental plasticity of native and non-native crab species'. MARE - IPLeiria (Portugal), main supervisor: Marco Lemos (MARE IPLeiria).
Max Willems - MSc student. Project 'Invasion of the shell-boring worm Polydora websteri in the Netherlands". University of Amstderdam (NL). In collaboration with AWI Sylt (D), NIOZ Yerseke and Hoogeschool Zeeland (NL)
Former PhD students
Maral Khosravi (2023, co-supervised). Project 'Interactive impact of thermal stress and parasitism on gastropods in an extreme and variable sea environment, the Persian Gulf'. GEOMAR & Kiel University(D), main supervisor and promotor: Martin Wahl (GEOMAR, D).
Qian Huang (2021-22). Project 'Ecology of Hematodinium infections in crustaceans'. Visiting student from the Joint PhD Training Program of the University of Chinese Academy of Sciences (UCAS).
Annika Cornelius (2021, co-supervised). Project 'Interspecific interactions and ecosystem effects of invasive mud crabs'. AWI Sylt & Bremen University (D), main supervisor: Christian Buschbaum (AWI Sylt, D); promotor: Kai Bischof (University Bremen, D).
Jennifer Welsh (2020). Project 'Biodiversity and disease risk in marine ecosystems'. In collaboration with Corina Brussaard (NIOZ), promotor: Jaap van der Meer (NIOZ, VU).
Claudia Bommarito (2020, co-supervised). Project 'Global warming effects on host-parasite interactions in common molluscs of the Adriatic and Baltic Sea'. GEOMAR & Kiel University (D); main supervisor and promotor: Martin Wahl (GEOMAR, D).
Anouk Goedknegt (2017) Project 'Pacific oysters and parasites: species invasions and their impact on parasite-host interactions', defense at the Free University Amsterdam (NL), promotor: Jaap van der Meer
Former MSc students
Former MSc students Wouter Koch (RUG Groningen, NL), Tabea Stier (University Hohenheim, D), Marieke Feis (RUG Groningen, NL), Reinier Nauta (RUG Groningen, NL), Jarco Havermans (RUG Groningen, NL), Anne Karin Schuster (University of Landau, D), Marin van Regteren (RUG Groningen, NL), Caroline Liddell (Wageningen University, NL), Annabelle Dairain (Pierre et Marie Curie College Parais, F), David Shoesmith (RUG Groningen, NL), Boukje Heidstra (RUG Groningen, NL), Sarah Bedolfe (RUG Groningen, NL), Eeke Haanstra (RUG Groningen, NL), Romy Cartiere (University of Amsterdam, NL), Luca Prins (University of Wageningen, NL), Lotte Geerlings (University of Wageningen, NL), Tjibbe Stelwagen (RUG Groningen, NL), Mark Bouwmeester (RUG Groningen, NL), Tijs Joling (University of Amsterdam, NL), Joshua Dagoy (University of the Basque Country, E), Jeffrey Knol (RUG Groningen, NL), Tom van Splunter (Leiden University, NL), Nadine Bleile (RUG Groningen, NL), Rebecca MacKinnon (Utrecht University, NL), Yente Kuperus (Radboud University Nijmegen, NL),
Former interns & visitors
Anke Hempel (D), Mirjana Markovic (D), Estefania Velilla (NL), Karlos Ribeiro de Moraes (BR), Wiem Boussellaa (PhD student; Sfax University, Tunisia), David Bello Jimenez (University of Malaga, E), Nadine Bleile (University of Freiburg, D), Svenja Kling (Heidelberg University, D), Mariken van den Heuvel (HAS Den Bosch, NL).
MSc projects
Various research projects for MSc students are available all year round. They range from field studies over field and lab experiments to literature-based approaches. Please contact me for more details or check the NIOZ internship webpages.
Teaching
I am curently teaching in courses in the Marine Biology MSc (and BSc) programme of the University of Groningen.
In addition, I teach in the NIOZ Marine Masters Summer Course.
Linked news
NIOZ publications
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2024
Huang, Q; Waser, A.M.; Li, C.; Thieltges, D.W. (2024). Lack of Hematodinium microscopic detection in crustaceans at the northern and southern ends of the Wadden Sea and an update of its distribution in Europe. Mar. Biol. (Berl.) 171(3): 63. https://dx.doi.org/10.1007/s00227-023-04381-3Jolma, E.R.E.; Born-Torrijos, A.; Heesterbeek, H.; van Leeuwen, A.; van Leeuwen, S.M.; Twijnstra, R.H.; Wegner, K.M.; Thieltges, D.W. (2024). Warming effects on the life cycles of two parasitic copepods with different invasion histories. Ecol. Evol. 14(6): e11485. https://dx.doi.org/10.1002/ece3.11485Rato, L.D.; Simoes, T.; Novais, S.C.; Damasceno, J.M.; van der Meer, J.; Thieltges, D.W.; Marques, J.C.; Lemos, M.F.L. (2024). Thermal performance of native and invasive crab species: investigating the invasion potential of Hemigrapsus takanoi in southern European Carcinus maenas’ habitats. Biological Invasions 26(11): 3587-3601. https://dx.doi.org/10.1007/s10530-024-03396-1Thieltges, D.W.; Johnson, P.T.J.; van Leeuwen, A.; Koprivnikar, J. (2024). Effects of predation risk on parasite–host interactions and wildlife diseases. Ecology 105(6): e4315. https://dx.doi.org/10.1002/ecy.4315
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2023
Berkhout, B.W.; Budria, A.; Thieltges, D.W.; Slabbekoorn, H. (2023). Anthropogenic noise pollution and wildlife diseases. Trends Parasitol. 39(3): 181-190. https://dx.doi.org/10.1016/j.pt.2022.12.002Born-Torrijos, A.; Riekenberg, P.M.; van der Meer, M.T.J.; Nachev, M.; Sures, B.; Thieltges, D.W. (2023). Parasite effects on host’s trophic and isotopic niches. Trends Parasitol. 39(9): 749-759. https://dx.doi.org/10.1016/j.pt.2023.06.003Cornelius, A.; Buschbaum, C.; Khosravi, M.; Waser, A.M.; Wegner, K.M.; Thieltges, D.W. (2023). Effect of predation risk on parasite transmission from first to second intermediate trematode hosts. J. Anim. Ecol. 92(5): 991-1000. https://dx.doi.org/10.1111/1365-2656.13921Khosravi, M.; Díaz-Morales, D.M.; Thieltges, D.W.; Wahl, M.; Vajedsamiei, J. (2023). Thermal optima of cercarial emergence in trematodes from a marine high-temperature ecosystem, the Persian Gulf. NPG Scientific Reports 13(1). https://dx.doi.org/10.1038/s41598-023-31670-0Khosravi, M.; Thieltges, D.W.; Díaz-Morales, D.M.; Bommarito, C.; Vajedsamiei, J. (2023). Filtration and respiration responses of mussels (Mytilus edulis) to trematode parasite infections (Renicola roscovita) and transient heat exposure. IJP 21: 296-304. https://dx.doi.org/10.1016/j.ijppaw.2023.07.007Koprivnikar, J.; Thieltges, D.W.; Johnson, P.T.J. (2023). Consumption of trematode parasite infectious stages: from conceptual synthesis to future research agenda. J. Helminthol. 97(e33): 1-19. https://dx.doi.org/10.1017/s0022149x23000111Meijer, K.J.; Gusmao, J.B.; Bruil, L.; Franken, O.; Grimm, I.A.; van der Heide, T.; Hijner, N.; Holthuijsen, S.; Hübner, L.; Thieltges, D.W.; Olff, H.; Eriksson, B.K.; Govers, L.L. (2023). The seafloor from a trait perspective. A comprehensive life history dataset of soft sediment macrozoobenthos. Scientific Data 10(1). https://dx.doi.org/10.1038/s41597-023-02728-5Reise, K.; Buschbaum, C.; Lackschewitz, D.; Thieltges, D.W.; Waser, A.M.; Wegner, K.M. (2023). Introduced species in a tidal ecosystem of mud and sand: curse or blessing? Mar. Biodiv. 53(1). https://dx.doi.org/10.1007/s12526-022-01302-3Thieltges, D.; Goedknegt, M.A. (2023).
Ecological Consequences of Parasite Invasions, in: Bojko, J. et al.
Parasites and Biological Invasions. pp. 100-114. https://dx.doi.org/10.1079/9781789248135.0007
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2022
Bommarito, C.; Khosravi, M.; Thieltges, D.W.; Pansch, C.; Hamm, T.; Pranovi, F.; Vajedsamiei, J. (2022). Combined effects of salinity and trematode infections on the filtration capacity, growth and condition of mussels. Mar. Ecol. Prog. Ser. 699: 33-44. https://dx.doi.org/10.3354/meps14179Bommarito, C.; Wahl, M.; Thieltges, D.W.; Pansch, C.; Zucchetta, M.; Pranovi, F. (2022). Biotic and abiotic drivers affect parasite richness, prevalence and abundance in Mytilus galloprovincialis along the Northern Adriatic Sea. Parasitology 149(1): 15-23. https://dx.doi.org/10.1017/s0031182021001438Born-Torrijos, A.; van Beest, G.S.; Vyhlídalová, T.; Knudsen, R.; Kristoffersen, R.; Amundsen, P.-A.; Thieltges, D.W.; Soldánová, M. (2022). Taxa-specific activity loss and mortality patterns in freshwater trematode cercariae under subarctic conditions. Parasitology 149(4): 457-468. https://dx.doi.org/10.1017/s0031182021002006Bosco Gusmao, J.; Thieltges, D.W.; Dekker, R.; Govers, L.L.; Meijer, K.J.; Eriksson, B.K. (2022). Comparing taxonomic and functional trait diversity in marine macrozoobenthos along sediment texture gradients. Ecol. Indic. 145: 109718. https://dx.doi.org/10.1016/j.ecolind.2022.109718Khosravi, M.; Thieltges, D.W.; Shamseddin, J.; Georgieva, S. (2022). Schistosomes in the Persian Gulf: novel molecular data, host associations, and life-cycle elucidations. NPG Scientific Reports 12(1). https://dx.doi.org/10.1038/s41598-022-17771-2
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2021
Al-Wazzan, Z.; Waser, A.M.; Glenner, H.; Giménez, L.; Thieltges, D.W. (2021). Temporal and spatial infection patterns of the rhizocephalan parasite Parasacculina leptodiae (Guérin-Ganivet, 1911) in the crab Leptodius exaratus along the shores of Kuwait. Mar. Biodiv. 51(6). https://dx.doi.org/10.1007/s12526-021-01235-3Bleile, N.; Thieltges, D.W. (2021). Prey preferences of invasive (Hemigrapsus sanguineus, H. takanoi) and native (Carcinus maenas) intertidal crabs in the European Wadden Sea. J. Mar. Biol. Ass. U.K. 101(5): 811-817. https://dx.doi.org/10.1017/s0025315421000655Bommarito, C.; Thieltges, D.W.; Pansch, C.; Barboza, F.; Pranovi, F.; Wahl, M. (2021). Effects of first intermediate host density, host size and salinity on trematode infections in mussels of the south-western Baltic Sea. Parasitology 148(4): 486-494. https://doi.org/10.1017/S0031182020002188Bouwmeester, M.M.; Goedknegt, M.A.; Poulin, R.; Thieltges, D.W. (2021). Collateral diseases: aquaculture impacts on wildlife infections. J. Appl. Ecol. 58(3): 453-464. https://doi.org/10.1111/1365-2664.13775Riekenberg, P.M.; Briand, M.J.; Moleana, T.; Sasal, P.; van der Meer, M.T.J.; Thieltges, D.W.; Letourneur, Y. (2021). Isotopic discrimination in helminths infecting coral reef fishes depends on parasite group, habitat within host, and host stable isotope value. NPG Scientific Reports 11: 4638. https://doi.org/10.1038/s41598-021-84255-0Riekenberg, P.M.; Joling, T.; IJsseldijk, L.L.; Waser, A.M.; van der Meer, M.T.J.; Thieltges, D.W. (2021). Stable nitrogen isotope analysis of amino acids as a new tool to clarify complex parasite–host interactions within food webs. Oikos (Kbh.) 31(10): 1650-1664. https://dx.doi.org/10.1111/oik.08450Waser, A.M.; Knol, J.; Dekker, R.; Thieltges, D.W. (2021). Invasive oysters as new hosts for native shell-boring polychaetes: using historical shell collections and recent field data to investigate parasite spillback in native mussels in the Dutch Wadden Sea. J. Sea Res. 175: 102086. https://dx.doi.org/10.1016/j.seares.2021.102086
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2020
Berkhout, B.W.; Borregaard, M.K.; Brandl, R.; Brändle, M.; Dehling, D.M.; Hof, C.; Poulin, R.; Thieltges, D.W. (2020). Host assemblage and environment shape β‐diversity of freshwater parasites across diverse taxa at a continental scale. Glob. Ecol. Biogeogr. 29(1): 38-49. https://dx.doi.org/10.1111/geb.13005Bommarito, C.; Pansch, C.; Khosravi, M.; Pranovi, F.; Wahl, M.; Thieltges, D.W. (2020). Freshening rather than warming drives trematode transmission from periwinkles to mussels. Mar. Biol. (Berl.) 167(4). https://dx.doi.org/10.1007/s00227-020-3657-3Bouwmeester; Waser, A.M.; van der Meer, J.; Thieltges, D.W. (2020). Prey size selection in invasive (Hemigrapsus sanguineus and H. takanoi) compared with native (Carcinus maenas) marine crabs. J. Mar. Biol. Ass. U.K. 100(1): 73-77. https://dx.doi.org/10.1017/s0025315419000985Dairain, A.; Engelsma, M.Y.; Drent, J.; Dekker, R.; Thieltges, D.W. (2020). High prevalences of disseminated neoplasia in the Baltic tellin Limecola balthica in the Wadden Sea. Dis. Aquat. Org. 138: 89-96. https://dx.doi.org/10.3354/dao03448Goedknegt, M.A.; Buschbaum, C.; van der Meer, J.; Wegner, K.M.; Thieltges, D.W. (2020). Introduced marine ecosystem engineer indirectly affects parasitism in native mussel hosts. Biological Invasions 22(11): 3223-3237. https://dx.doi.org/10.1007/s10530-020-02318-1Waser, A.M.; Lackschewitz, D.; Knol, J.; Reise, K.; Wegner, K.M.; Thieltges, D.W. (2020). Spread of the invasive shell-boring annelid Polydora websteri (Polychaeta, Spionidae) into naturalised oyster reefs in the European Wadden Sea. Mar. Biodiv. 50(5). https://dx.doi.org/10.1007/s12526-020-01092-6Welsh, J.E.; Steenhuis, P.; de Moraes, K.R.; van der Meer, J.; Thieltges, D.W.; Brussaard, C.P.D. (2020). Marine virus predation by non-host organisms. NPG Scientific Reports 10(1): 9 pp. https://dx.doi.org/10.1038/s41598-020-61691-y
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2019
Cornelius, A.; Waser, A.M.; Buschbaum, C.; Thieltges, D.W. (2019). First record of the endoparasitic isopod Portunion maenadis (Giard, 1886) (Epicaridea: Entoniscidae) in shore crabs in the Wadden Sea and a review of its distribution in Europe. Mar. Biodiv. 49(6): 2931-2936. https://dx.doi.org/10.1007/s12526-019-01012-3Feis, M.E.; Goedknegt, M.A.; Arzul, I.; Chenuil, A.; den Boon, O.; Gottschalck, L.; Kondo, Y.; Ohtsuka, S.; Shama, L.N.S.; Thieltges, D.W.; Wegner, K.M.; Luttikhuizen, P.C. (2019). Global invasion genetics of two parasitic copepods infecting marine bivalves. NPG Scientific Reports 9: e12730. https://dx.doi.org/10.1038/s41598-019-48928-1Goedknegt, M.A.; Nauta, R.; Markovic, M.; Buschbaum, C.; Folmer, E.O.; Luttikhuizen, P.C.; Van der Meer, J.; Waser, A.M.; Wegner, K.M.; Thieltges, D.W. (2019). How invasive oysters can affect parasite infection patterns in native mussels on a large spatial scale. Oecologia 190(1): 99-113. https://dx.doi.org/10.1007/s00442-019-04408-xGutiérrez; Piersma, T.; Thieltges, D.W. (2019). Micro‐ and macroparasite species richness in birds: The role of host life history and ecology. J. Anim. Ecol. 88(8): 1226-1239. https://dx.doi.org/10.1111/1365-2656.12998Thieltges, D.W.; Goedknegt, M.A.; O'Dwyer, K.; Senior, A.M.; Kamiya, T. (2019). Parasites and stable isotopes: a comparative analysis of isotopic discrimination in parasitic trophic interactions. Oikos (Kbh.) 128(9): 1329-1339. https://dx.doi.org/10.1111/oik.06086Welsh, J.E.; Hempel, A.; Markovic, M.; Van der Meer, J.; Thieltges, D.W. (2019). Consumer and host body size effects on the removal of trematode cercariae by ambient communities. Parasitology 146(3): 342-347. https://dx.doi.org/10.1017/S0031182018001488
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2018
Boussellaa, W.; Neifar, L.; Goedknegt, M.A.; Thieltges, D.W. (2018). Lessepsian migration and parasitism: richness, prevalence and intensity of parasites in the invasive fish Sphyraena chrysotaenia compared to its native congener Sphyraena sphyraena in Tunisian coastal waters. PeerJ 6: e5558. https://doi.org/10.7717/peerj.5558Goedknegt, M.A.; Bedolfe; Drent, J.; van der Meer, J.; Thieltges, D.W. (2018). Impact of the invasive parasitic copepod Mytilicola orientalis on native blue mussels Mytilus edulis in the western European Wadden Sea. Mar. Biol. Res. 14(5): 497-507. https://dx.doi.org/10.1080/17451000.2018.1442579Goedknegt, M.A.; Thieltges, D.W.; van der Meer, J.; Wegner, K.M.; Luttikhuizen, P.C. (2018). Cryptic invasion of a parasitic copepod: Compromised identification when morphologically similar invaders co-occur in invaded ecosystems. PLoS One 13(3): e0193354. https://doi.org/10.1371/journal.pone.0193354Thieltges, D.W.; Mouritsen, K.N.; Poulin, R. (2018). Ecology of parasites in mudflat ecosystems, in: Beninger, P.G. Mudflat ecology. Aquatic Ecology Series, 7: pp. 213-242. https://doi.org/10.1007/978-3-319-99194-8_9
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2017
Drent, J.; Bijkerk, R.; Grotjahn, M.; Voß, J.; Carausu, M.-C.; Thieltges, D.W. (2017). Macrozoobenthos, in: Kloepper, S. et al. Wadden Sea Quality Status Report 2017.Goedknegt, M.A.; Havermans, J.; Waser, A.M.; Luttikhuizen, P.C.; Velilla, E.; Camphuysen, C.J.; Van der Meer, J.; Thieltges, D.W. (2017). Cross-species comparison of parasite richness, prevalence, and intensity in a native compared to two invasive brachyuran crabs. Aquat. Invasions 12(2): 201-212. https://doi.org/10.3391/ai.2017.12.2.08Goedknegt, M.A.; Schuster, A.-K.; Buschbaum, C.; Gergs, R.; Jung, A.; Luttikhuizen, P.C.; Van der Meer, J.; Troost, K.; Wegner, K.M.; Thieltges, D.W. (2017). Spillover but no spillback of two invasive parasitic copepods from invasive Pacific oysters (Crassostrea gigas) to native bivalve hosts. Biological Invasions 19(1): 365-379. https://dx.doi.org/10.1007/s10530-016-1285-0Goedknegt, M.A.; Shoesmith, D.; Jung, A.; Luttikhuizen, P.C.; van der Meer, J.; Philippart, C.J.M.; van der Veer, H.W.; Thieltges, D.W. (2018). Trophic relationship between the invasive parasitic copepod Mytilicola orientalis and its native blue mussel (Mytilus edulis) host. Parasitology 145(6): 814-821. https://dx.doi.org/10.1017/s0031182017001779Gutiérrez, J.S.; Rakhimberdiev, E.; Piersma, T.; Thieltges, D.W. (2017). Migration and parasitism: habitat use, not migration distance, influences helminth species richness in Charadriiform birds. J. Biogeogr. 44(5): 1137-1147. https://dx.doi.org/10.1111/jbi.12956Kloepper, S.; Baptist, M.J.; Bostelmann, A.; Busch, J.A.; Buschbaum, C.; Gutow, L.; Janssen, G.; Jensen, K.; Jørgensen, H.P.; de Jong, F.; Lüerßen, G.; Schwarzer, K.; Strempel, R.; Thieltges, D. (2017). Wadden Sea Quality Status Report 2017. Common Wadden Sea Secretariat: Wilhelmshaven, Germany.Liddell, C.; Welsh, J.E.; Van der Meer, J.; Thieltges, D.W. (2017). Effect of dose and frequency of exposure to infectious stages on trematode infection intensity and success in mussels. Dis. Aquat. Org. 125(2): 85-92. https://dx.doi.org/10.3354/dao03133Welsh, J.E.; Liddell, C.; Van der Meer, J.; Thieltges, D.W. (2017). Parasites as prey: the effect of cercarial density and alternative prey on consumption of cercariae by four non-host species. Parasitology 144(13): 1775-1782. https://doi.org/10.1017/s0031182017001056
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2016
Feis, M.E.; Goedknegt, M.A.; Thieltges, D.W.; Buschbaum, C.; Wegner, K.M. (2016). Biological invasions and host-parasite coevolution: different coevolutionary trajectories along separate parasite invasion fronts. Zoology (Jena) 119(4): 366–374. https://dx.doi.org/10.1016/j.zool.2016.05.012Goedknegt, M.A.; Feis, M.E.; Wegner, K.M.; Luttikhuizen, P.C.; Buschbaum, C.; Camphuysen, C.J.; Van der Meer, J.; Thieltges, D.W. (2016). Parasites and marine invasions: Ecological and evolutionary perspectives. J. Sea Res. 113: 11–27. https://dx.doi.org/10.1016/j.seares.2015.12.003Lokmer, A.; Goedknegt, M.A.; Thieltges, D.W.; Fiorentino, D.; Kuenzel, S.; Baines, J.F.; Wegner, K.M. (2016). Spatial and temporal dynamics of Pacific oyster hemolymph microbiota across multiple scales. Front. Microbiol. 7: 1367. https://dx.doi.org/10.3389/fmicb.2016.01367Thieltges, D.W.; Poulin, R. (2016). Food-web-based comparison of the drivers of helminth parasite species richness in coastal fish and bird definitive hosts. Mar. Ecol. Prog. Ser. 545: 9-19. dx.doi.org/10.3354/meps11588Thieltges, D.W.; Wegner, K.M. (2016). Ecology and evolution of marine parasites and diseases: International NIOZ–AWI symposium, 10–14 March 2014, Texel, The Netherlands. J. Sea Res. 113: 1-2. dx.doi.org/10.1016/j.seares.2015.12.010Waser, A.M.; Goedknegt, M.A.; Dekker, R.; McSweeney, N.; Witte, J.IJ.; Van der Meer, J.; Thieltges, D.W. (2016). Tidal elevation and parasitism: patterns of infection by the rhizocephalan parasite Sacculina carcini in shore crabs Carcinus maenas. Mar. Ecol. Prog. Ser. 545: 215-225. https://dx.doi.org/10.3354/meps11594
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2015
Feis, M.E.; Thieltges, D.W.; Olsen, J.L.; de Montaudouin, X.; Jensen, K.T.; Bazaïri, H.; Culloty, S.C.; Luttikhuizen, P.C. (2015). The most vagile host as the main determinant of population connectivity in marine macroparasites. Mar. Ecol. Prog. Ser. 520: 85-99. dx.doi.org/10.3354/meps11096Goedknegt, M.A.; Welsh, J.E.; Drent, J.; Thieltges, D.W. (2015). Climate change and parasite transmission: how temperature affects parasite infectivity via predation on infective stages. Ecosphere 6(6): 96. dx.doi.org/10.1890/ES15-00016.1Stier, T.; Drent, J.; Thieltges, D.W. (2015). Trematode infections reduce clearance rates and condition in blue mussels Mytilus edulis. Mar. Ecol. Prog. Ser. 529: 137-144. dx.doi.org/10.3354/meps11250
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2014
Koch, W.; Boer, P.; Witte, J.IJ.; van der Veer, H.W.; Thieltges, D.W. (2014). Inventory and comparison of abundance of parasitic copepods on fish hosts in the western Wadden Sea (North Sea) between 1968 and 2010. J. Mar. Biol. Ass. U.K. 94(3): 547-555. dx.doi.org/10.1017/S0025315413001677Welsh, J.E.; van der Meer, J.; Brussaard, C.P.D.; Thieltges, D.W. (2014). Inventory of organisms interfering with transmission of a marine trematode. J. Mar. Biol. Ass. U.K. 94(4): 697–702. dx.doi.org/10.1017/S0025315414000034
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2013
Dunne, J.A.; Lafferty, K.D.; Dobson, A.P.; Hechinger, R.F.; Kuris, A.M.; Martinez, N.D.; McLaughlin, J.P.; Mouritsen, K.N.; Poulin, R.; Reise, K.; Stouffer, D.B.; Thieltges, D.W.; Williams, R.J.; Zander, C.D. (2013). Parasites Affect Food Web Structure Primarily through Increased Diversity and Complexity. PLoS Biology 11(6). dx.doi.org/10.1371/journal.pbio.1001579Poulin, R.; Krasnov, B.R.; Pilosof, S.; Thieltges, D.W. (2013). Phylogeny determines the role of helminth parasites in intertidal food webs. J. Anim. Ecol. 82: 1265-1275. hdl.handle.net/10.1111/1365-2656.12101Studer, A.; Kremer, L.; Nelles, J.; Poulin, R.; Thieltges, D.W. (2013). Biotic interference in parasite transmission: Can the feeding of anemones counteract an increased risk of parasitism in amphipods at higher temperature? J. Exp. Mar. Biol. Ecol. 445: 116-119. dx.doi.org/10.1016/j.jembe.2013.04.014Thieltges, D.W.; Amundsen, P.-A.; Hechinger, R.F.; Johnson, P.T.J.; Lafferty, K.D.; Mouritsen, K.N.; Preston, D.L.; Reise, K.; Zander, C.D.; Poulin, R. (2013). Parasites as prey in aquatic food webs: implications for predator infection and parasite transmission. Oikos (Kbh.) 122(10): 1473-1482. dx.doi.org/10.1111/j.1600-0706.2013.00243.xThieltges, D.W.; Engelsma, M.Y.; Wendling, C.C.; Wegner, K.M. (2013). Parasites in the Wadden Sea food web. J. Sea Res. 82: 122-133. dx.doi.org/10.1016/j.seares.2012.06.002Thieltges, D.W.; Marcogliese, D.J.; Blanar, C.A.; Poulin, R. (2013). Trematode prevalence-occupancy relationships on regional and continental spatial scales in marine gastropod hosts. Mar. Ecol. Prog. Ser. 490: 147-154. dx.doi.org/10.3354/meps10381Thompson, R.M.; Poulin, R.; Mouritsen, K.N.; Thieltges, D.W. (2013). Resource tracking in marine parasites: going with the flow? Oikos (Kbh.) 122(8): 1187-1194. dx.doi.org/10.1111/j.1600-0706.2012.00245.x
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2012
Goedknegt, M.A.; Welsh, J.E.; Thieltges, D.W. (2012). Parasites as prey. Encycl. Life Sci. (Online) 2012: 1-8. https://dx.doi.org/10.1002/9780470015902.a0023604Koehler, A.V.; Brown, B.; Poulin, R.; Thieltges, D.W.; Fredensborg, B.L. (2012). Disentangling phylogenetic constraints from selective forces in the evolution of trematode transmission stages. Evolutionary Ecology 26(6): 1497-1512. dx.doi.org/10.1007/s10682-012-9558-2Poulin, R.; Blanar, C.A.; Thieltges, D.W.; Marcogliese, D.J. (2012). Scaling up from epidemiology to biogeography: local infection patterns predict geographical distribution in fish parasites. J. Biogeogr. 39(6): 1157-1166. dx.doi.org/10.1111/j.1365-2699.2011.02667.x
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2011
Elsner, N.O.; Jacobsen, S.; Thieltges, D.W.; Reise, K. (2011). Alien parasitic copepods in mussels and oysters of the Wadden Sea. Helgol. Mar. Res. 65(3): 299-307. dx.doi.org/10.1007/s10152-010-0223-2Poulin, R.; Blanar, C.A.; Thieltges, D.W.; Marcogliese, D.J. (2011). The biogeography of parasitism in sticklebacks: distance, habitat differences and the similarity in parasite occurrence and abundance. Ecography 34(4): 540-551. dx.doi.org/10.1111/j.1600-0587.2010.06826.xPoulin, R.; Krasnov, B.R.; Mouillot, D.; Thieltges, D.W. (2011). The comparative ecology and biogeography of parasites. Phil. Trans. R. Soc. Lond. (B Biol. Sci.) 366(1576): 2379-2390. dx.doi.org/10.1098/rstb.2011.0048Thieltges, D.W.; Hof, C.; Borregaard, M.K.; Dehling, D.M.; Brändle, M.; Brändl, R.; Poulin, R. (2011). Range size patterns in European freshwater trematodes. Ecography 34(6): 982-989. dx.doi.org/10.1111/j.1600-0587.2010.06268.xThieltges, D.W.; Hof, C.; Dehling, D.M.; Brändle, M.; Brändl, R.; Poulin, R. (2011). Host diversity and latitude drive trematode diversity patterns in the European freshwater fauna. Glob. Ecol. Biogeogr. 20(5): 675-682. dx.doi.org/10.1111/j.1466-8238.2010.00631.x
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