Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2022
Forfattere
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 MirandaSammendrag
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.
Sammendrag
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.
Forfattere
James Kisaakye Hendrika Fourie Solveig Haukeland Joseph Kisitu Solomy Nakimera Laura Cortada Sevgan Subramanian Danny CoyneSammendrag
Det er ikke registrert sammendrag
Forfattere
Christer Moe Rolandsen Roy Andersen Olav Strand Erling Johan Solberg Erling Meisingset Atle Mysterud Morten Heim Øystein Brekkum Bram Van MoorterSammendrag
Det er ikke registrert sammendrag
Forfattere
Thomas Gschwantner Iciar Alberdi Sébastien Bauwens Susann Bender Dragan Borota Michal Bosela Olivier Bouriaud Johannes Breidenbach Jānis Donis Christoph Fischer Patrizia Gasparini Luke Heffernan Jean-Christophe Hervé László Kolozs Kari T. Korhonen Nikos Koutsias Pál Kovácsevics Miloš Kučera Gintaras Kulbokas Andrius Kuliešis Adrian Lanz Philippe Lejeune Torgny Lind Gheorghe Marin François Morneau Thomas Nord-Larsen Leónia Nunes Damjan Pantić John Redmond Francisco C. Rego Thomas Riedel Vladimír Šebeň Allan Sims Mitja Skudnik Stein Michael TomterSammendrag
Det er ikke registrert sammendrag
Forfattere
Marzieh Hasanzadeh Saray Aziza Baubekova Alireza Gohari Seyed Saeid Eslamian Bjørn Kløve Ali Torabi HaghighiSammendrag
Det er ikke registrert sammendrag
Forfattere
Christina Fischer Hans Martin Hanslin Knut Anders Hovstad Marcello D'Amico Johannes Kollmann Svenja B. Kroeger Giulia Bastianelli Jan C. Habel Helena Rygne Tommy LennartssonSammendrag
Roadsides, in particular those being species-rich and of conservation value, are considered to improve landscape permeability by providing corridors among habitat patches and by facilitating species' dispersal. However, little is known about the potential connectivity offered by such high-value roadsides. Using circuit theory, we modelled connectivity provided by high-value roadsides in landscapes with low or high permeability in south-central Sweden, with ‘permeability’ being measured by the area of semi-natural grasslands. We modelled structural connectivity and, for habitat generalists and specialists, potential functional connectivity focusing on butterflies. We further assessed in which landscapes grassland connectivity is best enhanced through measures for expanding the area of high-value roadsides. Structural connectivity provided by high-value roadsides resulted in similar patterns to those of a functional approach, in which we modelled habitat generalists. In landscapes with low permeability, all target species showed higher movements within compared to between grasslands using high-value roadsides. In landscapes with high permeability, grassland generalists and specialists showed the same patterns, whereas for habitat generalists, connectivity provided by high-value roadsides and grasslands was similar. Increasing the ratio of high-value roadsides can thus enhance structural and functional connectivity in landscapes with low permeability. In contrast, in landscapes with high permeability, roadsides only supported movement of specialised species. Continuous segments of high-value roadsides are most efficient to increase connectivity for specialists, whereas generalists can utilize also short segments of high-value roadsides acting as stepping-stones. Thus, land management should focus on the preservation and restoration of existing semi-natural grasslands. Management for enhancing grassland connectivity through high-value roadsides should aim at maintaining and creating high-value roadside vegetation, preferably in long continuous segments, especially in landscapes with low permeability.
Forfattere
Pingping Wang Marianne Stenrød Liang Wang Shankui Yuan Liangang Mao Lizhen Zhu Lan Zhang Yanning Zhang Hongyun Jiang Yongquan Zheng Xingang LiuSammendrag
Det er ikke registrert sammendrag
Forfattere
Lene R. Nielsen Nina Elisabeth Nagy Sara Piqueras Chatchai Kosawang Lisbeth G. Thygesen Ari HietalaSammendrag
Det er ikke registrert sammendrag
Forfattere
Andre van Eerde Aniko Varnai Yanliang Wang Lisa Paruch John-Kristian Jameson Fen Qiao Hans Geir Eiken Hang Su Vincent Eijsink Jihong Liu ClarkeSammendrag
Det er ikke registrert sammendrag