Publications Heethoff, M. (). Fight or hide? Adaptive values of chemical defense vs. morphological protection of oribatid mites depend on predation intensity rather than predation type. in prep. Koerner, L., Laumann, M., Betz, O., Heethoff, M. (). Loss of the sticky harpoon - COI sequences indicate paraphyly of Stenus with respect to Dianous (Staphylinidae, Steninae). in prep. Van der Meijden, A., Langer, F., Boistel, R., Vagovic, P., Heethoff, M. (). Small animals with strong bites: Functional morphology and bite performance of raptorial chelicerae of camel spiders (Solifugae) and a meta-analysis of animal bite forces. J. Exp. Biol., submitted. Heethoff, M. (). Regeneration of complex defensive oil-gland secretions and its importance for chemical defense in Archegozetes longisetosus Aoki (Acari, Oribatida). J. Chem. Ecol., submitted. Schmelzle, S., Norton, R. A., Heethoff, M. (). A morphological comparison of two closely related ptychoid oribatid mite species: Phthiracarus longulus and P. globosus (Acari: Oribatida: Phthiracaroidea). Soil Organisms, accepted. Bergmann, P., Heethoff, M. (). Development of the internal genital organs in early nymphal stages of Archegozetes longisetosus Aoki (Acari, Oribatida) as obtained by synchrotron X-ray microtomography (SR-µCT) and transmission electron microscopy (TEM). Soil Organisms, submitted. Heethoff, M. Raspotnig, G. (). Investigating chemical communication in oribatid and astigmatid mites - Pitfalls and suggestions. Soil Organisms, accepted. Bergmann, P., Heethoff, M. (). The oviduct is a brood chamber for facultative egg retention in the parthenogenetic oribatid mite Archegozetes longisetosus Aoki (Acari, Oribatida), Tissue & Cell, submitted. Korinkova, T., Kral, J., Heethoff, M., Laumann, M. (). Cytogenetics of Actinotrichida. In: Handbook of Zoology, submitted. --- (43) Heethoff, M., (2012). Book review: Plant-Animal Communication, H.M. Schaefer & G.D. Ruxton, Oxford University Press, New Haven (2011). Basic Appl. Ecol. 13: 106. PDF (42) Heethoff, M., Raspotnig, G. (2012). Triggering chemical defense in an oribatid mite using artificial stimuli. Exp. Appl. Acarol. 56: 287-295. PDF (41) Heethoff, M., Raspotnig, G. (2012). Expanding the ‘enemy-free space’ for oribatid mites: Evidence for chemical defense of juvenile Archegozetes longisetosus against the rove beetle Stenus juno. Exp. Appl. Acarol. 56: 93-97. PDF, Supplemental video (40) Heethoff, M., Koerner, L., Norton, R. A., Raspotnig, G. (2011). Tasty but protected - first evidence of chemical defense in oribatid mites, J. Chem. Ecol. 37: 1037-1043. PDF, Supplemental video (39) Heethoff, M., Raspotnig, G. (2011). Is 7-hydroxyphthalide a natural compound of oil gland secretions? – Evidence from Archegozetes longisetosus (Acari, Oribatida). Acarologia 51: 229-236. PDF (38) Fernández, R., Bergmann, P., Almodóvar, A., Cosín, D., Heethoff, M. (2011). Ultrastructural and molecular insights into three populations of Aporrectodea trapezoides (Dugés, 1828) (Oligochaeta, Lumbricidae) with different reproductive modes. Pedobiologia 54: 281-290. PDF
	(37) Alberti, G., Heethoff, M., Norton, R. A., Schmelzle, S., Seniczak, A., Seniczak, S. (2011). Fine structure of the gnathosoma of Archegozetes longisetosus Aoki (Acari: Oribatida, Trhypochthoniidae), J. Morphology 272: 1025-1079. PDF (37a) Alberti, G., Heethoff, M., Norton, R. A., Schmelzle, S., Seniczak, A., Seniczak, S. (2011). Erratum: Fine structure of the gnathosoma of Archegozetes longisetosus Aoki (Acari: Oribatida, Trhypochthoniidae), J. Morphology 272: 1408. PDF
(36) Raspotnig, G., Norton, R. A., Heethoff, M. (2011). Oribatid mites and skin alkaloids in poison frogs. Biol. Lett. 7: 555-556. PDF (35) Heethoff, M., Laumann, M., Weigmann, G., Raspotnig, G. (2011). Integrative taxonomy: combining morphological, molecular and chemical data for species delineation in the parthenogenetic Trhypochthonius tectorum complex (Acari, Oribatida, Trhypochthoniidae), Front. Zool. 8:2. PDF (34) Heethoff, M., (2010). Book review: Dazzled and Deceived: Mimicry and Camouflage, P. Forbes. Yale University Press, New Haven, Connecticut (2009). Basic Appl. Ecol. 11: 471. PDF (33) Laumann, M., Norton, R. A., Heethoff, M. (2010). Acarine cleavage patterns and early embryology: Inconsistencies, artificial results and misinterpretation. Soil Organisms 82: 217-235. PDF (32) Bergmann, P., Laumann, M., Heethoff, M. (2010). Ultrastructural aspects of vitellogenesis in Archegozetes longisetosus Aoki 1965 (Acari, Oribatida, Trhypochthoniidae). Soil Organisms 82: 193-208. PDF (31) Schmelzle, S., Helfen, L., Norton, R. A., Heethoff, M. (2010). The ptychoid defensive mechanism in Phthiracarus longulus (Acari, Oribatida, Phthiracaroidea): Exoskeletal amd muscular elements. Soil Organisms 82: 253-273. PDF (30) Laumann, M., Bergmann, P., Norton, R. A., Heethoff, M. (2010).  First cleavages, preblastula and blastula in the parthenogenetic mite Archegozetes longisetosus (Acari, Oribatida) indicate holoblastic rather than superficial cleavage. Arthropod Struct. Dev. 39: 276.286. PDF (29) Heethoff, M., Norton, R. A. (2009). A new use of synchrotron X-ray microtomography (SR-µCT): three-dimensional biomechanical modeling of chelicerate mouthparts and calculation of theoretical bite forces. Inv. Biol. 128: 332-339. PDF
(28) Heethoff, M. (2009). Mit Röntgenstrahlen in den Mikrokosmos – Synchrotron-Röntgen-Mikrotomographie für nicht-invasive Visualisierung mikroskopischer Strukturen. BIOforum 32: 14-16. PDF
(27) Schmelzle, S., Helfen, L., Norton, R. A., Heethoff, M. (2009). The ptychoid defensive mechanism in Euphthiracaroidea (Acari: Oribatida): A comparison of muscular elements with functional considerations. Arthropod Struct. Dev. 38: 461-472. PDF
(26) Heethoff, M., Norton, R. A., Scheu, S., Maraun, M. (2009). Parthenogenesis in oribatid mites (Acari, Oribatida): evolution without sex. In: Schoen, I., Martens, K., van Dijk, P. (eds.) Lost Sex - The Evolutionary Biology of Parthenogenesis. Springer Press, pp 241-257. PDF
	(25) Heethoff, M., Helfen, L., Norton, R. A. (2009) Description of Neoliodes dominicus n.sp. (Acari, Oribatida) from Dominican amber, aided by synchrotron X-ray microtomography. J. Paleont. 83: 153-159. PDF
	(24) Heethoff, M., Norton, R. A. (2009). Role of musculature during defecation in a particle-feeding arachnid, Archegozetes longisetosus (Acari, Oribatida). J. Morphology 270: 1-13. PDF
(23) Laumann, M., Bergmann, P., Heethoff, M. (2008). Some remarks on the cytogenetics of oribatid mites. Soil Organisms 80: 223-232. PDF
(22) Bergmann, P., Laumann, M., Cloetens, P., Heethoff, M. (2008). Morphology of the internal reproductive organs of Archegozetes longisetosus Aoki (Acari, Oribatida). Soil Organisms 80: 171-195. PDF
(21) Schmelzle, S., Norton, R. A., Helfen, L., Heethoff, M. (2008).The ptychoid defensive mechanism in Euphthiracaroidea (Acari: Oribatida): A comparison of exoskeletal elements. Soil Organisms 80: 233-247. PDF
(20) Heethoff, M., Cloetens, P. (2008). A comparison of synchrotron X-ray phase contrast tomography and holotomography for non-invasive investigations of the internal anatomy of mites. Soil Organisms 80: 205-215. PDF
(19a) Heethoff, M. (2009) Секс? Нет, спасибо… labor&more 1/09: 12-14 (in Russian). PDF (19) Heethoff, M. (2008) Sex? Nein, danke… labor&more 4/08: 10-12. PDF
(18) Heethoff, M., Helfen, L., Cloetens, P. (2008). Non-invasive 3D-visualization of the internal organization of microarthropods using synchrotron X-ray-tomography with sub-micron resolution. JOVE 15: doi:10.3791/737 VISIT
(17) Heethoff, M. (2008). Molekulare Evolution - Was uns die DNS über unseren Ursprung erzählt. In: Betz, O., Köhler, H. (eds.) Die Evolution des Lebendigen - Grundlagen und Aktualität der Evolutionstheorie. Narr, Franke, Attempto Verlag Tübingen, pp 39-56. PDF
	(16) Heethoff, M., Koerner, L. (2007). Small but powerful - The oribatid mite Archegozetes longisetosus Aoki (Acari, Oribatida) produces disproportionately high forces. J. Exp. Biol. 210: 3036-3042. PDF
(15) Betz, O., Wegst, U., Weide, D., Heethoff, M.,  Helfen, L., Lee, W.-K., Cloetens, P. (2007). Imaging applications of synchrotron x-ray micro-tomography in biological morphology and biomaterial science. I. General aspects of the technique and its advantages in the analysis of arthropod structure. J. Microsc. 22: 51-71. PDF
(14) Laumann, M., Norton, R. A.,Weigmann, G., Scheu, S., Maraun, M., Heethoff, M. (2007). Speciation in the parthenogenetic oribatid mite genus Tectocepheus (Acari, Oribatida) as indicated by molecular phylogeny, Pedobiologia 51: 111-122. PDF
(13) Heethoff, M., Laumann, M., Bergmann, P. (2007) Adding to the reproductive biology of the parthenogenetic oribatid mite Archegozetes longisetosus (Acari, Oribatida, Trhypochthoniidae). Turk. J. Zool. 31: 151-159. PDF
(12) Heethoff, M., Domes, K., Laumann, M., Maraun, M., Norton, R. A., Scheu, S. (2007). High genetic divergences indicate ancient separation of parthenogenetic lineages of the oribatid mite Platynothrus peltifer (Acari, Oribatida). J. Evol. Biol. 20: 392-402. PDF
(11) Heethoff, M., Bergmann, P., Norton, R. A. (2006). Karyology and sex determination of oribatid mites. Acarologia 46: 127-131. PDF
(10) Schaefer, I., Domes, K., Heethoff, M., Schneider, K., Schön, I., Norton, R. A., Scheu, S., Maraun, M.. (2006) No evidence for the 'Meselson effect' in parthenogenetic oribatid mites (Oribatida, Acari), J. Evol. Biol. 19: 184-193. PDF
(9) Heethoff, M., Etzold, K., Scheu, S. (2004) Mitochondrial COII sequences indicate that the parthenogenetic earthworm Octolasion tyrtaeum (Savigny 1826) constitutes of two lineages differing in body size and genotype. Pedobiologia, 48: 9-13. PDF
(8) Maraun, M., Heethoff, M., Schneider, K., Scheu, S., Weigmann, G., Cianciolo, J., Thomas, R. H., Norton, R. A. (2004). Molecular phylogeny of oribatid mites (Oribatida, Acari): evidence for multiple radiations of parthenogenetic lineages Exp. Appl. Acarol. 33: 183-201. PDF
(7) Heethoff, M. (2003) Genetic diversity and evolutionary age of parthenogenetic oribatid mites (Acari: Oribatida). PhD thesis, Technische Universität Darmstadt, Germany.
(6) Maraun, M., Heethoff, M., Scheu, S., Norton, R. A., Weigmann, G., Thomas, R. H. (2003) Radiation in sexual and parthenogenetic oribatid mites (Oribatida, Acari) as indicated by genetic divergence of closely related species. Exp. Appl. Acarol. 29: 265-277. PDF
(5) Heethoff, M., Maraun, M., Scheu, S. (2002) Ancient parthenogenetic species: Methods for detection and a candidate from oribatid mites. Zoology 105 (V), 25.
(4) Maraun, M., Heethoff, M., Scheu, S. (2002) Parthenogenetic radiation and the re-evolution of sex. Evidence from molecular phylogeny of oribatid mites (Acari, Oribatida). Zoology 105 (V), 93.
(3) Heethoff, M. (2002) Ist Parthenogenese eine Sackgasse der Evolution? Berichte der AG Bodenmesofauna 18, 16-18.
(2) Heethoff, M., Maraun, M., Scheu, S. (2000) Genetic variability in ribosomal ITS 1-sequences of the parthenogenetic oribatid mite Platynothrus peltifer (C.L. KOCH, 1839)(Acari:Oribatida). Ber. nat.-med. Ver. Innsbruck 87: 339-354. PDF
(1) Heethoff, M. (1999) Genetische Variabilität bei der parthenogenetischen Hornmilbe Platynothrus peltifer. Diploma thesis, Technische Universität Darmstadt, Germany. PDF
Miscellaneous
Heethoff, M. (2012) Hide or fight? Defensive strategies in oribatid mites. Invited talk, Zoologisches Kolloquium, Universität Graz, Austria. Heethoff, M. (2012) Life in enemy-free space - adaptive values of defensive strategies in oribatid mites. Invited talk, Centre of Organismal Systems Biology colloquium, Vienna, Austria Heethoff, M. (2011) Leben im feindfreien Raum: Morphologische und chemische Anpassungen zum Fraßschutz bei Hornmilben. Talk, Graduate meeting of DZG section morphology, Munich, Germany Schmelzle, S., Heethoff, M. (2011) Milben in einem neuen Licht - Zusammenfassung der bisherigen Ergebnisse basierend auf SR-µCT-Daten. Talk, Graduate meeting of DZG section morphology, Munich, Germany 2011: Selected reports about paper 40: PRESS RELEASE, Tagblatt Heethoff, M. (2011) Chemische Entwaffnung von Hornmilben - Sind die Öldrüsen Wehrdrüsen? Talk, 8. Milbenkundliches Kolloquium, Tübingen, Germany Heethoff, M. (2010) Entwicklungen und Anwendungen hochauflösender Synchrotron-Röntgen-Tomographie. Invited talk, Graduate meeting of DZG section morphology, Vienna, Austria Langer, F., Götz, H., Heethoff, M. (2010) Cheliceral muscles and bite-force in the solifuge Galeodes Olivier 1791 (Chelicerata). Poster, DZG Annual meeting, Hamburg, Germany, awarded best poster in the morphology section Schmelzle, S., Helfen, L., Norton, R. A., Heethoff, M. (2010) Pressure build-up in box mites (Acari, Oribatida) - one problem, two solutions. Talk, DZG annual meeting , Hamburg, Germany Heethoff, M. (2010) Functional morphology and evolutionary implications of particle-feeding in chelicerate micro-arthropods (Acari, Oribatida). Invited talk, DZG annual meeting, Hamburg, Germany Bergmann, P., Laumann, M., Heethoff, M. (2009) Development of the genital system in Archegozetes longisetosus. Poster, DGaaE-conference, University of Göttingen, Germany
Kurz, U., Heethoff, M. (2009) Functional morphology of the ovipositor of oribatid mites (Acari, Oribatida). Poster, DGaaE-conference, University of Göttingen, Germany
Schmelzle, S., Helfen, L., Norton, R. A., Heethoff, M. (2009) The ptychoid defensive mechanism in Euphthiracaroidea. Poster, DGaaE-conference, University of Göttingen, Germany
Heethoff, M., Norton, R. A. (2009) The functional morphology of particle-feeding in a micro-chelicerate: Archegozetes longisetosus (Acari, Oribatida). Talk, DGaaE-conference, University of Göttingen, Germany
2009: Radio interview about paper 25 (Hochschulradio Stuttgart, Der Neue Morgen, 11.02.2009)
2009: TV report about paper 25 (Prometheus TV, Nachrichten, 30.01.2009)
2009: TV report about paper 25 (SWR-BW, Baden Württemberg aktuell, 21.01.2009)
2009: Radio report about paper 18 and 25 (SWR4, 20.01.2009): MP3 (2MB)
2009: Selected reports about paper 25: PRESS RELEASE, DIE ZEIT (22.01.2009)
Heethoff, M. (2009) Functional morphology turns over a new leaf: The use of synchrotron-X-ray-tomography in the analyses of microarthropod structure and development. Invited talk, Zoologisch-Anthropologisches Kolloquium, University of Göttingen, Germany
2008: Report about paper 18: ESRF-news 48
2008: TV report about paper 16 (Pro7, Galileo, 02.07.2008)
2008: Radio broadcast about mites: 'Heimliche Untermieter' (SWR2, 14.05.2008): WISSEN (14.05.2008)
Heethoff, M. (2008) Klassische und moderne Methoden zur Untersuchung der inneren Anatomie von Mikroarthropoden: Hornmilben (Acari, Oribatida). Invited talk, Tübinger Mikroskopische Gesellschaft, Germany
Heethoff, M. (2008) Hornmilben als Modellsysteme evolutionsbiologischer und funktionsmorphologischer Forschung. Invited talk, Zoologisches Kolloquium, Universität Graz, Austria.
Heethoff, M. (2007) Methodik der Synchrotron-Röntgen-Tomographie für die Untersuchung der inneren Anatomie von Mikroarthropoden. Talk, Milbenkundliches Kolloquium, Universität Kiel, Germany
Heethoff, M. (2007) Funktionsmorphologische Untersuchungen an der Hornmilbe Archegozetes longisetosus. Talk, Milbenkundliches Kolloquium, Universität Kiel, German
2007: Selected reports about paper16: SPIEGEL-ONLINE (2008.2007), ORF, N-TV, Cartoon
Heethoff, M. (2007) Parthenogenesis – Mechanisms and evolutionary consequences. Invited talk, Colloquium of Theoretical Physics, TU Darmstadt, Germany.
2007: Radio interview about Neotrombicula autumnalis, Radio Ton MP3 (1.5MB)
Heethoff, M., Betz, O. (2006). Microarthropod Morphology and Synchrotron µCT Tomography - An Example from Acarology. HSC1 Course ESRF, France. Poster. PDF (2MB)
Heethoff, M. (2006) Applications of high resolution synchrotron X-ray microtomography techniques. Invited talk, GRK340 Summerschool, Hirschegg, Austria
Heethoff, M. (2005) Sex without Sex. Invited talk, GRK340 Summerschool, Hirschegg, Austria
Heethoff, M. (2005) Comment on SPIEGEL-article "Wozu Sex?". DER SPIEGEL 42: 8. PDF (1.6MB)
Heethoff, M. (2005) Festvortrag zur Absolventenfeier, Fakultät für Biologie, TU Darmstadt. Invited Talk
2005: Radio interview about 'Biodiversität im Boden', SWR4 MP3 (1.5 MB)
Heethoff, M. (2004) Ein Leben ohne Sex - Eine Sackgasse der Evolution. Oder nicht? Talk, Zoological colloquium, Tübingen, Germany.
Heethoff, M. (2004) Sex, Parthenogenese, Evolution. Talk, GfbS Jusys annual meeting, Darmstadt, Germany.
Maraun, M., Heethoff, M., Schneider, K., Scheu, S., Weigmann, G., Cianciolo, J., Thomas, R. H., Norton, R. A. (2004). Molecular phylogeny of oribatid mites (Oribatida, Acari): evidence for multiple radiations of parthenogenetic lineages. Talk (Maraun), EURAAC 2004, Berlin, Germany.
Heethoff, M., Laumann, M., Domes, K., Maraun, M., Norton, R. A., Scheu, S. (2003) No need for sex? Evolution without recombination in oribatid mites. ESEBIX, Leeds, UK, 13.8P. Poster
Maraun, M., Heethoff, M., Schneider, K., Scheu, S., Thomas, R. H., Norton, R. A. (2003) Radiation in ancient asexuals: Oribatid Mites (Acari). ESEBIX, Leeds, UK, 16.4.
Heethoff, M. (2003) No need for sex? Ancient parthenogenetic lineages of oribatid mites. Invited talk,  PARTNER meeting Wageningen, Netherlands.
Heethoff, M. (2003) Holokinetic chromosomes - inverted meiosis - terminal fusion automixis. Evolutionary consequences. Invited talk, PARTNER meeting Wageningen, Netherlands.
Heethoff, M. (2002) Ancient parthenogenetic species: Methods for detection and a candidate from oribatid mites. Talk, DZG annual meeting, Halle, Germany.
Heethoff, M. (2001). Molekularbiologische Untersuchungen als Ergänzung zu ökologischen Experimenten. Talk, AG Mesofauna annual meeting, Giessen, Germany.
Heethoff, M., Maraun, M., Scheu, S. (2000) Asexuals in soil-living "Oribatida": ancient or recent? Zoological Society of London, Sex & Asex - from microbes to multicells. London, UK, Poster PDF (60 KB)