2025
Werb O, I Ejotre, J Schaer. Bat malaria parasites: insights from an understudied and diverse host group. 117th Annual Meeting of the German Zoological Society. Berlin, Germany, September 2025
Ejotre I, L Viquez-R, LA Hartmann, T Mazzarulli, DF Anguyo, L Powers, K Adiga, A Alumai, M Andama, A Sak, J Sutton, I Steinberg, M Repke, J Schaer, K FIeld, DM Reeder. Mock viral infections in Little Epauletted Fruit Bats (Epomophorus labiatus) influence Hepatocystis parasite infection dynamics. 20th International Bat Research Conference (IBRC). Cairns, Australia, August 2025
M Power, J Schaer. Blood parasite coinfection in four Australian flying fox species. 20th International Bat Research Conference (IBRC). Cairns, Australia, August 2025
Schaer J, O Werb, L Ch’eng, DHW Low, SA Borthwick, GJ Smith, L Frias, A Hitch, I Mendenhall. Malaria parasite diversity in Cambodian bats offers a fresh look at Hepatocystis parasite evolution in mammals. 20th International Bat Research Conference (IBRC). Cairns, Australia, August 2025
Werb O, I Ejotre, M Power, AA Escalante, MA Pacheco, J Schaer. Uncovering diversity: complete mitochondrial genomes of African bat Hepatocystis reveal conserved structure but unusual size. 16th Malaria Meeting by DTG, DZIF and PEG, April 2025, Tübigen, Germany
Schaer J, I Ejotre. Malaria parasites of bats – diverse taxa in a diverse host group. 2nd Women in Malaria Conference. March 2025
Mugambi B, DM Reeder, K Field, J Simpson, I Ejotre, E Heitlinger, J Schaer. Transcriptome analysis of Hepatocystis-infected epauletted fruit bats in Uganda. 2nd Women in Malaria Conference. March 2025
2024
Schaer J, O Werb, L Ch’eng, DHW Low, SA Borthwick, GJ Smith, A Hitch, I Mendenhall. High diversity and phylogenetic relationships of Polychromophilus and Hepatocystis parasites of various bat species in Cambodia. VI International Conference on Malaria and other blood parasites of Wildlife & III International symposium of Wildlife Diseases Research Network, November 2024, Medellín, Colombia
Werb O, K Matuschewski, N Weber, A Hillers, J Garteh, A Jusu, B Turay, N Wauquier, AA Escalante, MA Pacheco, J Schaer. New member of Plasmodium (Vinckeia) and P. cyclopsi discovered in bats in Sierra leone – nuclear and complete mitochondrial genome analyses. VI International Conference on Malaria and other blood parasites of Wildlife & III International symposium of Wildlife Diseases Research Network, November 2024, Medellín, Colombia
Ejotre I, A Kasim, DF Anguyo, DM Reeder, J Schaer. Stress might impact Hepatocystis infections in peri-domestic epauletted fruit bats in Uganda. VI International Conference on Malaria and other blood parasites of Wildlife & III International symposium of Wildlife Diseases Research Network, November 2024, Medellín, Colombia
Thiombiano NG, M Boungou, BAM Chabi, A Oueda, O Werb, J Schaer. First investigation of blood parasites of bats in Burkina Faso detects Hepatocystis parasites and infections with diverse Trypanosoma spp. VI International Conference on Malaria and other blood parasites of Wildlife & III International symposium of Wildlife Diseases Research Network, November 2024, Medellín, Colombia
Tsague KJ, FM Bakwo, JP Atagana, D Mbeng, L Palm, T Tchuinkam, J Schaer. Molecular detection of trypanosomes of the Trypanosoma livingstonei species group in diverse bat species in Central Cameroon. VI International Conference on Malaria and other blood parasites of Wildlife & III International symposium of Wildlife Diseases Research Network, November 2024, Medellín, Colombia
Mugambi B, DM Reeder, K Field, J Simpson, I Ejotre, E Heitlinger, J Schaer. Transcriptome analysis of Hepatocystis-infected epauletted fruit bats in Uganda. VI International Conference on Malaria and other blood parasites of Wildlife & III International symposium of Wildlife Diseases Research Network, November 2024, Medellín, Colombia
Field K, Talmage S, Gao M, Steinberg I, Ogota G, Field E, Sewall B, Turner G, Simposon J, Ejotre I, Kurchez L, Wilson C, Foe AD, Schaer J, DM Reeder. Transcriptomic Response to Coronavirus Infections in African and North American bats. Society for Integrative and Comparative Biology (SICB) Annual Meeting, https://doi.org/10.1093/icb/icae140, Seattle Washington, January 2024
2023
Ejotre I, DM Reeder, K Matuschewski, R Kityo, D Anguyo foe, K Adiga, L Viquez Rodriguez, J Schaer. Negative Perception of bats, exacerbated by the SARS-CoV-2 pandemic, may hinder bat conservation in Northern Uganda. 14th African Small Mammal Symposium, September 2023, Namibia
Werb O, K Matuschewski, N Weber, A Hillers, J Garteh, N Wauquier, AA Escalante, MA Pacheco, J Schaer. A new member of the “rodent” Plasmodium (Vinckeia) clade discovered in an insectivorous bat in Sierra Leone. 15th Malaria Meeting BNITM, March 2023, Hamburg, Germany.
Mugambi BM, DM Reeder, I Ejotre, K Field, J Schaer. Evaluation of between-host heterogeneity in the patterns of immune gene expression in Hepatocystis parasite-infected African epauletted fruit bats. 30th Annual Meeting of the German Society for Parasitology. March 2023, Gießen, Germany
2022
Field K, S Talmage, M Gai, I Steinberg, G Ogata, E Field, B Sewall, G Turner, J Simpson, I Ejotre, L Kurchez, C Wilson, AF Foe, J Schaer, DM Reeder. Transcriptomic responses to coronavirus infections in African and North American bats. 3rd International Infectious Diseases of Bats Symposium. July 2022, Fort Collins, Colorado, USA.
Reeder DM, Weber N, Nagy M, Markotter W, Dávalos L, Schaer J, Dechmann D, Sutton J, et al. Viral evidence from African bats. 3rd International Infectious Diseases of Bats Symposium. July 2022, Fort Collins, Colorado, USA.
Schaer J. Haemosporidian parasites of bats – different patterns across a diverse host group. 19th International Bat Research Conference/50th North American Symposium for Bat Research. August 2022, Texas, USA.
Ejotre I, DM Reeder, K Matuschewski, J Schaer. Dynamics of Hepatocystis parasite infections in the bat species E. labiatus in Uganda.International Conference on Malaria and related Haemosporidian Parasites of Wildlife. September 2022, Bielefeld, Germany.
Werb O, B Pejic, J Schaik, C Chumnandee, N Pha-obnga, J Schaer. Molecular investigation of Polychromophilus parasites – data from infections in bat flies of Miniopterus bats in Serbia and in Scotophilus bats in Thailand. International Conference on Malaria and related Haemosporidian Parasites of Wildlife. September 2022, Bielefeld, Germany
Merino CC, DM Reeder, I Ejotre, K Matuschewski, W Stenzel, J Schaer. Histological investigation of Hepatocystis-infected African fruit bats. International Conference on Malaria and related Haemosporidian Parasites of Wildlife. September 2022, Bielefeld, Germany.
Tsague KJ, Bakwo Fild EM, Atanga JP, Dongue NV, Mbeng DW, J Schaer and Tchuinkam T. Hepatocystis and Nycteria (Haemosporida) parasite infections of bats in the Central Region of Cameroon. International Conference on Malaria and related Haemosporidian Parasites of Wildlife. September 2022, Bielefeld, Germany.
Schaik J, L Timm, SP Rosskopf, J Schaer. Molecular investigation of Polychromophilus infection in European bats through screening of their ectoparasitic bat flies. International Conference on Malaria and related Haemosporidian Parasites of Wildlife. September 2022, Bielefeld, Germany.
Schaer J. Malaria parasites of bats feature different patterns in a diverse host group. 5th International Conference on Malaria and related Haemosporidian Parasites of Wildlife. September 2022, Bielefeld, Germany. Plenary talk
2021- 2018
Ejotre I, DM Reeder, K Matuschewski, R Kityo, J Schaer. The silent impact of Covid-19 pandemic on bat conservation in northern Uganda: experiences from bat perception and sensitization studies. 30th International Congress for Conservation Biology (ICCB 2021). December 2021, Kigali, Rwanda.
Mugambi BM, DM Reeder, I Ejotre, K Field, TD Otto, J Schaer. The molecular characterization of Hepatocystis parasites in bats. 1st Women in Malaria Conference. March 2021.
Ejotre I, DM Reeder, K Matuschewski, J Schaer. Baby steps to bat conservation in northern Uganda: knowledge of and relations between bats and human communities. 6th International Berlin Bat Meeting. March 2021.
Field K, J Simpson, I Ejotre, J Schaer, G Ogata, B Ye, K Lenker, DM Reeder. Whole transcriptome gene expression in African fruit bats: life history and parasitic infection. Wild and Comparative Immunology Consortium. December 2020.
Ejotre I, DM Reeder, K Matuschewski, J Schaer. Prevalence and parasitemia of Hepatocystis parasites infecting fruit bats in Uganda. International Online Conference on Blood Parasites of Wildlife, September 2020.
van Schaik J., SP Rosskopf, K Matuschewski, J Schaer. Bats, flies and haemosporidians: co-phylogeography of a host, a parasite and a pathogen. German Bat Research Meeting. Frauenchiemsee, Germany, 2020.
Schaer J. The diversity of bat malaria parasites – an overview. Fledermauskundliche Tagung. Mansfeld, Germany, 2019.
Schaer J, I Ejotre, M Power, DM Reeder, K Matuschewski. Hepatocystis parasites – closest relative of mammalian Plasmodium, but differing life cycle. 14th Malaria Meeting. Hamburg, Germany, 2019.
Schaer J, W Boardman, K Matuschewski, M Power. Phylogenetic analysis of Hepatocystis parasites of the four mainland Australian flying fox species. 18th International Bat Research Conference (IBRC). Phuket, Thailand, 2019.
Schaer J, SP Rosskopf, K Matuschewski, J van Schaik. Molecular investigation of Polychromophilus infection in the bat-fly Basilia nana from Myotis bechsteinii bats across Europe. 18th International Bat Research Conference (IBRC). Phuket, Thailand, 2019.
Reeder DM, JS Simpson, J Field, I Ejotre, J Schaer. Life history variation in immune and metabolic gene expression in free-ranging little epauletted fruit bats. 18th International Bat Research Conference (IBRC). Phuket, Thailand, 2019.
Simpson J, DM Reeder, K Field, I Ejotre, J Schaer. Hepatocystis malarial infection and antiviral immune gene expression in African fruit bats – important zoonotic reservoirs. 68th Annual International Conference of the Wildlife Disease Association, California, USA, 2019.
Schaer J, AN Gordon, L McMichael, D Russel, SL Perkins, K Matuschewski, H Field, M Power. Phylogenetic relationships of haemosporidian parasites of Australian flying foxes. Australian Society for Parasitology annual conference, St Kilda, Melbourne, Australia, 2018.
Schaer J, AN Gordon, L McMichael, D Russel, SL Perkins, K Matuschewski, C Smith, H Field, M Power. Phylogenetic relationships of haemosporidian parasites of Australian flying foxes. 18th Australasian Bat Society Conference, Forum & AGM, Richmond, NSW, Australia, 2018.
Klose SP, J Held, M Gmeiner, B Mordmüller, PB Matsiegui, I Eckerle, N Weber, K Matuschewski, J Schaer. Survey of haemosporidian parasites in bats in Ngounie Province, Gabon. DGP-Meeting, Berlin, Germany, 2018.
Klose SP, K Matuschewski, F Mayer, N Weber, J Decher, I Ejotre, DM Reeder, J Schaer. Molecular phylogeny of African epauletted fruit bats. TDFF – Treffen der Deutschen Fledermausforscher. Heidesee, Germany, 2018.
2017 – 2009
Almarri M, K Matuschewski, J Schaer, TD Otto. Draft genome of bat malaria parasite reveals host switch and adaptation. BioMalPar XIII: Biology and Pathology of the Malaria Parasite. Heidelberg, Germany, 2017.
Schaer J, TD Otto, SL Perkins, N Weber, K Matuschewski. Plasmodium cyclopsi, a parasite species of bats. Annual Molecular Parasitology Meeting (MPM). Woods Hole, USA, 2016.
Schaer J, SL Perkins, K Matuschewski, Reeder DM. African bat malaria parasites – from host specificity to broad host range. 17th International Bat Research Conference (IBRC). Durban, South Africa, 2016.
Schaer J, Reeder DM, I Ejotre, SL Perkins, K Matuschewski. Hepatocystis, a derived parasite genus from mammalian Plasmodium (Haemosporida) – data from infections in African fruit bats. DGP-Meeting, Goettingen, Germany, 2016.
Schaer J, ME Vodzak, I Ejotre, L Kurpiers, F Mayer, SL Perkins, K Matuschewski, DM Reeder. Hepatocystis of African Fruit Bats – Evidence for Continuous and Efficient Transmission Cycles. 45th Monterey, CA, USA, 2015.
Reeder DM, I Ejotre, L Kurpiers, J Schaer, K Field. Gaps in our Understanding of African Bat Ecophysiology – Lessons from South Sudan. 45th Monterey, CA, USA, 2015.
Ejotre I, L Kurpiers, J Schaer, M Swartz, K DeRuff, K Field, DM Reeder. Health and Immunity Differ by Sex and Reproductive Class in the Little Epauletted Fruit Bat. 45th Monterey, CA, USA, 2015.
Schaer J, DM Reeder, ME Vodzak, KJ Olival, N Weber, F Mayer, K Matuschewski, SL Perkins. 2014. Nycteria parasite coevolution with African rhinolophid and nycterid bats. 12th African Small Mammal Symposium. Mantasoa, Madagascar, 2015
Reeder DM, L Kurpiers, I Ejotre, J Schaer, K Field. African fruit bat species differences in health and immunity as a function of habitat disturbance and movement ecology – implications for emerging infectious disease from South Sudan studies. 4th International Berlin Bat Meeting: Movemement Ecology of Bats. Berlin, 2015
Reeder DM, ME Vodzak, J Schaer, K Field. Using Ecoimmunology to examine costs of disease in Old World bats. RCNE Meeting. Woods Hole, MA, USA, 2014.
Schaer J, DM Reeder, ME Vodzak, K Matuschewski, F Mayer, SL Perkins. Bat Malaria – a focus on Hepatocystis in African epauletted fruit bats. 16th International Bat Research Conference (IBRC) & 43rd North American Symposium on Bat Research (NASBR). San Jose, Costa Rica, 2013. Best oral presentation
Schaer J, K Matuschewski, SL Perkins. Diversity of African chiropteran haemosporidian parasites and close affiliation with rodent Plasmodium species. International Conference on Malaria & Related Haemosporidian Parasites of Wildlife. Vilnius, 2013.
Schaer J, DM Reeder, ME Vodzak, SL Perkins. Malaria Parasites of Bats from South Sudan. 3nd International Berlin Bat Meeting: Bats in the Anthropocene. Berlin, 2013.
Schaer J, SL Perkins, DM Reeder, F Mayer. Malaria Parasites of African Bats – Diversity & Phylogenetic Relationships. 2nd International Conference on Biodiversity and the UN Millennium Development Goals. Berlin, 2013.
Schaer J, SL Perkins, KJ Olival, F Leendertz. Records of Malaria Parasites of West African Bats. The International Meeting on Malaria and Related Haemosporidian Parasites of Wildlife. West Virginia, 2011
Decher J, A Hoffmann, RW Norris, J Schaer, B Kadjo, R Hutterer, MD Carleton. A Baseline Survey of Shrews and Rodents at Pic de Fon, Simandou Range, Guinea, with a comparison of small mammal diversity in other areas of the Upper Guinea Region of West Africa. 85th Annual Conference of German Society of Mammalogy. Luxembourg, 2011
Hoffmann A, J Schaer, J Decher, R Norris, B Kadjo, R Hutterer. A Baseline Survey of Bats in the Simandou Range, Guinea. 11th African Small Mammal Symposium. Swaziland, 2011
Schaer J, SL Perkins, KJ Olival. Malaria Parasites of Bats from West Africa – Host associations and evolutionary relationships. 2nd International Berlin Bat Meeting: Bat Biology and Infectious Diseases. Berlin, 2010
Perkins SL, KJ Olival, J Schaer. The Malaria Parasites of Bats. 39th North American Symposium on Bat Research. Portland, 2009