Senckenberg Research Institute and Natural History Museum Frankfurt


Adrienne Jochum

Adrienne Jochum

Born 1959 in Watertown, New York, USA


Since 2017: Senckenberg Ehrenamtliche Mitarbeiterin

Since 2016:  Research Associate by Dr. Eike Neubert at the Naturhistorisches Museum der Burgergemeinde Bern in affiliation with Prof. Dr. Wolfgang Nentwig,
Institute of Ecology and Evolution, University of Bern.


2014−2015:  Ph. D. thesis, Institute of Ecology and Evolution, University of Bern, Bern Switzerland, Prädikat “summa cum laude”. Thesis title: “Contributions to the Carychiidae (Gastropoda, Ellobioidea): new perspectives in carychiid taxonomy”. Supervisors: Dr. Eike Neubert and Prof. Dr. Wolfgang Nentwig.

2010−2014: Ph.D. Research. Dept. of Phylogeny and Systematics, Institute of Ecology, Evolution and Diversity, Goethe University, Frankfurt am Main, Germany. Subject: Evolution of the Carychiidae

2010: Palaeontological practicum in Malacology with Dr. Ronald Janssen at the Senckenberg Research Institute and Natural History Museum. Stratigraphic analysis of Pectinidae in cores from the Upper Oligocene of the Niederrheinischen Bucht.

2007−2010: Research Scientist by Prof. Dr. Annette Klussmann-Kolb Dept. of Phylogeny and Systematics, Institute of Ecology, Evolution and Diversity, Goethe University, Frankfurt am Main, Germany.

1978−1982:  B. Sci. thesis, College of Fisheries and Oceanographic Sciences, University of Washington, Seattle, Washington, USA. Thesis title: The Effects of the herbicides, 2,4-Dichlorophenoxyacetic acid (2,4-D) and 2,4,5-Trichlorophenoxyacetic acid (2,5,5-T) on oysters”.

Grants Obtained

2010: Malacological Society of London (£ 918): support for SEM: Evolution and diversity of the troglobitic Carychiidae – A morphological and phylogenetic investigation of the terrestrial ellobiid genera, Carychium and Zospeum (Gastropoda, Pulmonata, Ellobioidea, Carychiidae).

2012−2013:  SYNTHESYS ref: AT-TAF-2909: A taxonomic re-evaluation of the European Carychiidae (Eupulmonata, Ellobioidea)

2013−2014:  SYNTHESYS ref: NL-TAF-3964: A taxonomic re-evaluation of the European Carychiidae (Eupulmonata, Ellobioidea)

2015−2016:  SYNTHESYS ref: AT-TAF-5370: Taxonomic re-evaluation of the European Carychiidae (Eupulmonata, Ellobioidea)


2008:           European Malacological Conference, Ponta Delgada, Azores (poster).      

2009:           American Malacological Conference, Ithaca, NY (poster).

2010:           International Conference on Subterranean Biology, Postojna, SLO. (poster).
                     Molluscan Forum, London. (Poster).

2011:           Biosystematics Berlin 2011. (Poster)
                     Deutsche Malakozoologische Gesellschaft (DMG), Hofgeismar. (invited talk).

2012:           American Malacological Conference Symposium, Philadelphia, PA (invited speaker).

2013:           Tomography for Scientific Advancement Symposium (ToScA), London (poster).
                     World Congress of Malacology (WCM), Ponta Delgada, Azores (talk).

2017:           European Malacological Conference, Krakow, Poland (talk)
                     Festsymposium Mollusken Europas, Stuttgart, Germany (talk)

Ongoing Projects

2007 − present: Revision of the microgastropod family Carychiidae. Investigation into the phylogeny, biogeography, taxonomy, paleontology, morphology and ecology. Emphasis is on interdisciplinary collaboration and investigation of new methods and technology to understand these ancient and character-depauperate microgastropods (<2mm). Additional focus is on their biology and ecology in superficial subterranean (SSHs) and subterranean habitats. From collecting material in caves to computer tomographic scanning to integrative taxonomic analysis, this project involves a rich and well-orchestrated international collaboration.

Research Interests

My interests cover the biogeography, paleontology, systematics, taxonomy, morphology, biology and ecology of terrestrial microgastropods (<5mm).

Revision of the European species of Carychiidae:  This project stems from recent phylogenetic and phylogeographic studies of the temporal and geographic diversification of epigean (Carychium) and subterranean (Zospeum) evolutionary lineages in European Carychiidae. Live material was collected at topotypic localities for an integrative reassessment (Nano-CT, SEM and molecular analyses) of established species. Considerable numbers of cryptic Northern Spanish and Croatian species of Zospeum are additionally being assessed. This work will contribute to the IUCN European Red List of Non-marine Molluscs project. (Collaborating interdisciplinary colleagues are from Germany, Switzerland, Slovenia, Croatia, the Netherlands, Hungary and Spain).

Revision of the North American, Central American and Asian species of Carychium: Collection of live material is ongoing at topotypic localities for an integrative reassessment of established species. Continued Implementation of Nano-CT, SEM and molecular analyses are in progress. (Collaborating colleagues and institutions are from the USA, Germany, Japan, Thailand, the Russian Far East and Nepal).

Microstructural properties of the carychiid shell and their potential for optimizing cement structures in constructional engineering: This project leans on the refined, free-form structures of the Swiss designer and engineer Heinz Isler. Collaborative interest lies in knowledge gleaned from the economic and resourceful use of calcium carbonate contributing to the intricate crystallographic orientation and construction of the tiny carychiid shell. Focus is on its use for the additive processing of building elements in construction. (in collaboration with Prof. Dr.-Ing.  Harold Kloft, Technical University Braunschweig ITE – Institut für Tragwerksentwurf, Braunschweig and Dr. Ashit Rao, Dept. Chemistry, University of Konstanz).

Microstructural differentiation in carychiid shells: SEM and ABRIO software show differences in crystallographic orientation among different species of carychiid snails. Emphasis is on its taxonomic and constructional value (in collaboration with Dr. Ashit Rao and Prof. Dr. Helmut Coelfen University of Konstanz).

Peer-Reviewed Publications


Gittenberger, E., Leda, P., De Winter, A. J. & Jochum, A. (2017): First record of Carychium in Bhutan (Gastropoda, Ellobioidea). -- Basteria 81 (4-6): 107–110.


Jochum, A. & Favre, A. (2017): First record of the sea slug Stylocheilus striatus (Quoy & Gaimard, 1825) (Anaspidea, Aplysiidae) and swarming behavior for Bazaruto Archipelago, Mozambique with the first record of Pleurobranchus forskalii Rüppel & Leuckart, 1828 (Nudipleaura, Pleurobranchidae) for Bazaruto Island (Gastropoda, Heterobranchia). -- Check List 13 (5): 435–441.


Jochum, A., Weigand, A. M., Bochud, E., Inäbnit, T., Dörge, D. D., Ruthensteiner, B., Favre, A., Martels, G. & Kampschulte, M. (2017): Three new species of Carychium O.F. Müller, 1773 from the Southeastern USA, Belize and Panama are described using computer tomography (CT) (Eupulmonata, Ellobioidea, Carychiidae). -- ZooKeys 675: 97–127.


Páll-Gergely, B., Jochum, A. & Asami, T. (2017): Three new species of Hypselostomatidae (Gastropoda: Pulmonata) from Cong Troi Cave, Northern Vietnam. -- Acta Zoologica Academiae Scientiarum Hungaricae 63 (3): 327–341.


Jochum, A., Slapnik, R., Klussmann-Kolb, A., Páll-Gergely, B., Kampschulte, M., Martels,G., Vrabec, M., Nesselhauf, C. & Weigand, A. M. (2015): Groping through the black box of variability: An integrative taxonomic and nomenclatural re-evaluation of Zospeum isselianum Pollonera, 1887 and allied species using new imaging technology (Nano-CT, SEM), conchological, histological and molecular data (Ellobioidea: Carychiidae). -- Subterranean Biology 16: 123−165.


Jochum, A., Prozorova, L., Sharyi-ool, M. & Páll-Gergely, B. (2015): A new member of troglobitic Carychiidae, Koreozospeum nodongense gen. et sp. nov. (Gastropoda, Eupulmonata, Ellobioidea) is described from Korea. -- ZooKeys 517: 39−57.


Páll-Gergely, B., Hunyadi, A., Jochum, A. & Asami, T. (2015): Seven new hypselostomatid species from China, including the World’s smallest land snail (Gastropoda: Pulmonata: Orthurethra). -- ZooKeys 523: 31−62.


Jochum, A., Neubauer, T. A. & Harzhauser, M. (2015): Microstructural details in shells of the gastropod genera Carychiella and Carychium of the Middle Miocene. -- Lethaia 49: 87−101.


Jochum, A., De Winter, A.J., Weigand, A. M., Gómez, B., & Prieto, C. (2015). Two new species of Zospeum Bourguignat 1856 from the Basque-Cantabrian Mountains, Northern Spain (Eupulmonata, Ellobioidea, Carychiidae). -- ZooKeys 483: 81−96.


Jochum, A., Slapnik, R., Kampschulte, M., Martels, G., Heneka, M. & Páll-Gergely, B. (2014): A review of the microgastropod genus Systenostoma Bavay & Dautzenberg, 1908 and a new subterranean species from China (Gastropoda, Pulmonata, Hypselostomatidae). -- ZooKeys 410: 23−40.


Weigand, A. M., Jochum, A. & Klussmann-Kolb, A. (2014): DNA barcoding cleans house through the Carychiidae (Eupulmonata, Ellobioidea). -- American Malacological Bulletin 32: 236−245.


Malkowsky, Y. & Jochum, A. (2014): Three-dimensional reconstructions of pallial eyes in Pectinidae (Mollusca: Bivalvia). -- Acta Zoologica (Stockholm): 1−7.


Weigand, A. M., Jochum, A., Slapnik, R., Schnitzler, J., Zarza, E. & Klussmann-Kolb, A. (2013): Evolution of microgastropods (Ellobioidea, Carychiidae): integrating taxonomic, phylogenetic and evolutionary hypotheses. -- BMC Evolutionary Biology 13:1−23.


Weigand, A. W., Pfenninger, M., Jochum, A. & Klussmann-Kolb, A. (2012): Alpine Crossroads or origin of genetic diversity? Comparative phylogeography of two sympatric microgastropod species. -- PLoS ONE 7: 1−23.


Weigand, A. M, Götze, M.- C. & Jochum, A. (2012): Outdated but established?! Conchologically driven species delineations in microgastropods (Carychiidae, Carychium). -- Organisms Diversity & Evolution, 12: 377–386.


Jochum, A., Weigand, A.M., Slapnik, R., Valentinčič & Prieto, C.E. (2012): The microscopic ellobioid, Zospeum Bourguignat, 1856 (Pulmonata, Ellobioidea, Carychiidae) makes a big debut in Basque Country and the province of Burgos (Spain). -- MalaCo 8:400−403.


Jochum, A. (2011): Evolution and diversity of the troglobitic Carychiidae - A morphological and phylogenetic investigation of the terrestrial ellobioid genera, Carychium and Zospeum. -- The Malacologist 57:16−18.


Weigand, A. M., Jochum, A., Pfenninger, M., Steinke, D. & Klussmann-Kolb, A. (2011): A new approach to an old conundrum - DNA barcoding sheds new light on phenotypic plasticity and morphological stasis in microsnails (Gastropoda, Pulmonata, Carychiidae).  -- Molecular Ecology Resources 11:255−265.


Weigand, A. M. & Jochum, A. (2010): Mollusca, Gastropoda, Pulmonata, Carychium minimum O.F. Müller, 1774: Filling gaps. New population record for the State of New York, Northeastern United States. -- CheckList 6: 517−518.


Weigand, A. M. & Jochum, A. (2010): Carychium minimum Müller, 1774 Microsnail hitchhikes across the Atlantic. Taxonomy in Action. -- BioNet 14.


Oetken, M., Jagodzinski, L.S., Vogt, C., Jochum, A. & Oehlmann, J. (2009): Combined effects of chemical and temperature stress on Chironomus riparius populations with differing genetic variability. -- Journal of Environmental Science and Health, Part A 44:955−962.

Reviewer For
Acta Zoologica, Check List, Journal of Cave and Karst Studies, Journal of Conchology, ZooKeys, Organisms, Diversity & Evolution, Cretaceous Research

Unitas Malacologica, The Systematics Association, Deutsche Malakozoologische  Gesellschaft, IUCN Red List Working Group of the IUCN SSC Red List Committee

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