Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2022
Authors
Rodney N. Nagoshi Georg Goergen Djima Koffi Komi Agboka Anani Kossi Mawuko Adjevi Hannalene Du Plessis Johnnie Van den Berg Ghislain T. Tepa-Yotto Jeannette K. Winsou Robert L. Meagher Thierry BrévaultAbstract
No abstract has been registered
Authors
Marian Schönauer Robert Prinz Kari Väätäinen Rasmus Astrup Dariusz Pszenny Harri Lindeman Dirk JaegerAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Niels Piot Oliver Schweiger Ivan Meeus Orlando Yañez Lars Straub Laura Villamar-Bouza Pilar De la Rúa Laura Jara Carlos Ruiz Martin Malmstrøm Sandra Mustafa Anders Nielsen Marika Mänd Reet Karise Ivana Tlak-Gajger Erkay Özgör Nevin Keskin Virginie Diévart Anne Dalmon Anna Gajda Peter Neumann Guy Smagghe Peter Graystock Rita Radzevičiūtė Robert J. Paxton Joachim R. de MirandaAbstract
Viruses are omnipresent, yet the knowledge on drivers of viral prevalence in wild host populations is often limited. Biotic factors, such as sympatric managed host species, as well as abiotic factors, such as climatic variables, are likely to impact viral prevalence. Managed and wild bees, which harbor several multi-host viruses with a mostly fecal–oral between-species transmission route, provide an excellent system with which to test for the impact of biotic and abiotic factors on viral prevalence in wild host populations. Here we show on a continental scale that the prevalence of three broad host viruses: the AKI-complex (Acute bee paralysis virus, Kashmir bee virus and Israeli acute paralysis virus), Deformed wing virus, and Slow bee paralysis virus in wild bee populations (bumble bees and solitary bees) is positively related to viral prevalence of sympatric honey bees as well as being impacted by climatic variables. The former highlights the need for good beekeeping practices, including Varroa destructor management to reduce honey bee viral infection and hive placement. Furthermore, we found that viral prevalence in wild bees is at its lowest at the extreme ends of both temperature and precipitation ranges. Under predicted climate change, the frequency of extremes in precipitation and temperature will continue to increase and may hence impact viral prevalence in wild bee communities.
Abstract
The success of Phasmarhabditis hermaphrodita (Schneider) Andrássy (Rhabditida: Rhabditidae) as a biological control agent of molluscs has led to a worldwide interest in phasmarhabditids. However, scant information is available on the lifecycle development of species within the genus. In the current study, the development of P. hermaphrodita, Phasmarhabditis papillosa, Phasmarhabditis bohemica and Phasmarhabditis kenyaensis were studied using ex vivo cultures, in order to improve our understanding of their biology. Infective juveniles (IJs) of each species were added to 1 g of defrosted homogenized slug cadavers of Deroceras invadens and the development monitored after inoculated IJ recovery, over a period of eight–ten days. The results demonstrated that P. bohemica had the shortest development cycle and that it was able to produce first-generation IJs after eight days, while P. hermaphrodita, P. papillosa and P. kenyaensis took ten days to form a new cohort of IJs. However, from the perspective of mass rearing, P. hermaphrodita has an advantage over the other species in that it is capable of forming self-fertilizing hermaphrodites, whereas both males and females are required for the reproduction of P. papillosa, P. bohemica and P. kenyaensis. The results of the study contribute to the knowledge of the biology of the genus and will help to establish the in vitro liquid cultures of different species of the genus.
Authors
James Kisaakye Hendrika Fourie Solveig Haukeland Joseph Kisitu Solomy Nakimera Laura Cortada Sevgan Subramanian Danny CoyneAbstract
No abstract has been registered
Abstract
Using decades of satellite observations, Finnish and Norwegian scientists calculated the warming effect caused by changes in the snow and ice cover of the Arctic and Antarctic regions.
Authors
Julia S. Joswig Christian Wirth Meredith C. Schuman Jens Kattge Björn Reu Ian J. Wright Sebastian Sippel Nadja Rüger Ronny Richter Michael E. Schaepman Peter M. van Bodegom J.H.C. Cornelissen Sandra Díaz Wesley N. Hattingh Koen Kramer Frederic Lens Ülo Niinemets Peter B. Reich Markus Reichstein Christine Römermann Franziska Schrodt Madhur Anand Michael Bahn Chaeho Byun Giandiego Campetella Bruno E. L. Cerabolini Joseph M. Craine Andres Gonzalez-Melo Alvaro G. Gutiérrez Tianhua He Pedro Higuchi Hervé Jactel Nathan J. B. Kraft Vanessa Minden Vladimir Onipchenko Josep Peñuelas Valério D. Pillar Ênio Sosinski Nadejda A. Soudzilovskaia Evan Weiher Miguel D. MahechaAbstract
No abstract has been registered
Authors
Randi Berland FrøsethAbstract
No abstract has been registered
Authors
Kjersti Holt HanssenAbstract
No abstract has been registered