Av anders [dot] ortegren [at] biol [dot] lu [dot] se (Anders Örtegren) - publicerad 1 februari 2023 Många fågelarter i tropikerna fångar och äter flick- och trollsländor. Här är en Rufous-tailed Jacamar som har fångat en stor trollslända i Atlantskogen i Brasilien. Foto: Erik Svensson Kroppsstorleken hos trollsländor varierar över jordklotet. Insekterna är större i de tempererade områdena än i tro

https://www.biologi.lu.se/artikel/rovdjur-och-temperatur-bestammer-kroppsstorleken-hos-insekter - 2025-03-09

By Jan [dot] Olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 16 September 2020 The researchers tracked 102 common swifts on their journey to Africa . Photo: Aron Hejdström. Compared with other migratory birds, the common swift follows a very unusual pattern when it migrates from the breeding areas in Europe to its wintering locations south of the Sahara. This is what researchers have o

https://www.biology.lu.se/article/rare-pattern-observed-migrating-common-swifts - 2025-03-09

By Jan [dot] Olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 3 November 2020 Anders Hedenström. Photo: Astrid Hedenström Professor Anders Hedenström receives SEK 22,9 million from Knut and Alice Wallenberg Foundation. Together with his colleagues Susanne Åkesson and Christoffer Johansson he will take a holistic approach to the factors that affect migratory birds and their flight from o

https://www.biology.lu.se/article/sek-229-million-holistic-approach-migratory-birds - 2025-03-09

By Jan [dot] Olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 10 November 2020 A banded demoiselle, one of the two species studied (Photo: Erik Svensson) Insects have difficulties handling the higher temperatures brought on by climate change, and might risk overheating. The ability to reproduce is also strongly affected by rising temperatures, even in northern areas of the world, accord

https://www.biology.lu.se/article/high-temperatures-threaten-survival-insects - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 24 November 2020 Johannes Rousk during field work in northern Sweden. Photo: Kathrin Rousk Together with almost 6400 other researchers around the globe Johannes Rousk has been selected as Highly cited researcher 2020 by The Web of Science Group. Only about one per cent of the researchers within a scientific field are appointe

https://www.biology.lu.se/article/johannes-one-most-cited-researchers-world - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 15 December 2020 A great tit at a bird feeder. Photo: Johan Nilsson A lot of people feed birds in the winter, but what is good for them and what is not? Andreas Nord, bird researcher at the Department of Biology in Lund knows the answer. “Fat is a lot better than crumbs from bread, pastry and buns. Fat is energy, bread is emp

https://www.biology.lu.se/article/christmas-goodies-birds - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 21 January 2021 Silver-washed fritillary butterfly (Photo: Per Henningson) The fluttery flight of butterflies has so far been somewhat of a mystery to researchers, given their unusually large and broad wings relative to their body size. Now researchers at Lund University in Sweden have studied the aerodynamics of butterflies

https://www.biology.lu.se/article/butterfly-wing-clap-explains-mystery-flight - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 2 February 2021 Researchers have discovered individual traits in fungi in their hunt for food. Maze-like structure made of silicone (Photo: Kristin Aleklett Kadish) Researchers at Lund University in Sweden have discovered the individual traits of fungi, and how their hyphae – that is, the fungal threads that grow in soil - be

https://www.biology.lu.se/article/soldiers-snakes-and-marathon-runners-hidden-world-fungi - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 4 February 2021 Photo: Charlie Cornwallis The world's largest bird, the ostrich, has problems reproducing when the temperature deviates by 5 degrees or more from the ideal temperature of 20 °C. The research, from Lund University in Sweden, is published in Nature Communications. The results show that the females lay up to 40 p

https://www.biology.lu.se/article/ostriches-challenged-temperature-fluctuations - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 12 February 2021 The Newfoundland coast (Photo: Creative Commons) Overfishing, hunting and intensive agriculture and forestry can sometimes contribute to plants and animals becoming endangered. New research from Lund University in Sweden and University of Toronto can now show why this leads to entire populations becoming smal

https://www.biology.lu.se/article/why-overfishing-leads-smaller-cod - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 16 February 2021 A spruce bark beetle (Photo: Erling Jirle) For the first time, a research team led by Lund University in Sweden has mapped out exactly what happens when spruce bark beetles use their sense of smell to find trees and partners to reproduce with. The hope is that the results will lead to better pest control and

https://www.biology.lu.se/article/breakthrough-fight-against-spruce-bark-beetles - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 9 March 2021 A long-tailed tit. Photo: Wikimedia Long life is common among bird parents that get help with childcare. This finding comes from researchers at the universities of Lund and Oxford who reviewed data from more than 9,000 studies. Being a parent can be tough. In general, animals that care for many offspring die youn

https://www.biology.lu.se/article/bird-parents-receive-help-live-longer - 2025-03-09

Published 23 March 2021 Photo: Kennet Ruona Many species of bee are threatened by global warming, but not all. The buff-tailed bumblebee is the world’s most common bee and will likely remain that way, as researchers from Lund University have discovered that this species benefits from a warmer climate. Through research into buff-tailed bumblebees collected by amateurs and researchers over a period

https://www.biology.lu.se/article/warmer-climate-making-worlds-most-common-bumblebee-even-more-common - 2025-03-09

Published 25 March 2021 Fruit fly (Photo: Qinyang Li) Researchers at Lund University in Sweden have investigated how the X and Y chromosomes evolve and adapt to each other within a population. The results show that breaking up coevolved sets of sex chromosomes could lead to lower survival rates among the offspring – something that could be of importance in species conservation, for example. The st

https://www.biology.lu.se/article/new-study-sheds-light-how-x-and-y-chromosomes-interact - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 6 April 2021 The presence of predator fish like pike causes bodily changes in fish that fear to be eaten. Photo: Marcel Einig, Pixabay Jerker Vinterstare at Lund University has studied the crucian carp species. In his doctoral thesis, he shows that residues of antidepressant medication in the water can cause changes in fish b

https://www.biology.lu.se/article/fish-behaviour-and-appearance-affected-stress - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 9 April 2021 Coal tit. Photo: Andreas Nord Researchers at Lund University in Sweden have discovered that bird blood produces more heat in winter, when it is colder, than in autumn. The study is published in The FASEB Journal. The secret lies in the energy factories of cells, the mitochondria. Mammals have no mitochondria in t

https://www.biology.lu.se/article/birds-blood-functions-heating-system-winter - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 7 May 2021 Great reed warbler (Photo: niclasahlberg.se) Great reed warblers normally migrate by night during its month-long migration from northern Europe to Sub-Saharan Africa. However, researchers have now discovered that during the few occasions when it continues to fly during daytime, it flies at extremely high altitudes

https://www.biology.lu.se/article/migratory-songbirds-climb-extreme-altitudes-during-daytime - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 18 May 2021 Two male wall lizards of the same species, Podarcis pityusensis. The species is common on the neighbouring islands of Ibiza and Formentera. Photos: Day's Edge Productions A new study may have uncovered why wall lizards have become the most successful reptile in the Mediterranean region. The results reveal how dras

https://www.biology.lu.se/article/new-species-formed-when-mediterranean-dried - 2025-03-09

By jan [dot] olsson [at] biol [dot] lu [dot] se (Jan Olsson) - published 20 May 2021 Photo: Caroline Isaksson Great tits living in cities are genetically different from great tits in the countryside. This is what researchers have found in a unique study, where they examined populations of great tits in nine large European cities. The researchers compared the city bird genes with the genes of their

https://www.biology.lu.se/article/stressful-life-city-affects-birds-genes - 2025-03-09

Published 4 June 2021 The middle spotted woodpecker has disappeared from Sweden, while the European fire-bellied toad has been reintroduced. (Photos: Wikimedia Commons) Researchers in Lund, Copenhagen and Norwich have shown that harmful mutations present in the DNA play an important – yet neglected – role in the conservation and translocation programs of threatened species. “Many species are threa

https://www.biology.lu.se/article/genomics-informed-decisions-can-help-save-species-extinction - 2025-03-09