Nyheter

Torftig livsmiljö för suggor påverkar kultingarnas arvsmassa

Tue, 23 May 2023 11:38:00 GMT

Forskarna såg påverkan i hjärnan hos kultingar till suggor som levt i ostimulerande och obekväma förhållanden. Foto: Getty images

I en ny studie har forskare från Uppsala universitet tillsammans med internationella kollegor undersökt vilka avtryck en torftig livsmiljö för suggor lämnar på nästa generation. Grisarna i studien föddes upp i Brasilien och hölls enligt uppfödningsstandard i landet. Suggornas obekväma och ostimulerande miljö förde med sig flera olika typer av förändringar i epigenomet hos avkomman.

Mikael Thollesson i UppTalk Weekly

Fri, 12 May 2023 12:35:00 GMT

Mikael Thollesson har medverkat i UppTalk Weekly och pratat om utforskning av okända svampdjur i havet. Se samtalet nedan.

Grzegorz Niedzwiedzki med i P4-dokumentär

Mon, 08 May 2023 11:54:00 GMT

Forskaren Grzegorz Niedzwiedzki har medverkat i en dokumentär som heter "Dinosauriejägaren" från Sveriges Radio P4.

MIkael Thollesson i UppTalk Weekly

Wed, 12 Apr 2023 11:17:00 GMT

Mikael Thollesson kommer att vara med i samtalsserien UppTalk weekly den 18 april mellan 12:00 och 12:30. Samtalet sänds live på Youtube.

Scientists: Madagascar’s unique biodiversity in grave danger

Mon, 05 Dec 2022 14:16:00 GMT

Lemurs are primates and unique to Madagascar. Photograph: Tobias Andermann

Madagascar has an enormous biodiversity, with most of the plant and animal species found nowhere else on earth. But the rich life on the island is in grave danger and governments and environmental organisations must help. This is claimed by a large number of researchers, including from Uppsala University, in the journal Science.

New major EU-funded research project takes broader approach to mental health

Wed, 30 Nov 2022 15:31:00 GMT

To improve understanding of mental health, today’s symptom-based diagnoses need to be complemented with biological criteria accounting for differences between individuals and the sexes. A major EU-funded research project, coordinated by Uppsala University, will pursue an interdisciplinary path towards better strategies to protect vulnerable individuals from mental illness.

DNA sequence enhances understanding origins of jaws

Mon, 28 Nov 2022 09:30:00 GMT

A regulatory DNA sequence preserved in jawed vertebrates labels the jaw joint cells (magenta) on the background of craniofacial cartilages and blood vessels (green) in the head of zebrafish larva. Photograph: Laura Waldmann

Researchers at Uppsala University have discovered and characterised a DNA sequence found in jawed vertebrates, such as sharks and humans, but absent in jawless vertebrates, such as lampreys. This DNA is important for the shaping of the joint surfaces during embryo development.

Genetisk variation skapas i svampsporer

Tue, 15 Nov 2022 12:24:00 GMT

En så kallad häxring. Forskarna har utnyttjat dess tillväxtsätt för att undersöka genetisk variation i svampar.
Foto/bild: Markus Hiltunen

Den mesta av en svamps genetiska variation uppkommer i de ganska kortlivade svampsporerna. I mycelet, som svampen tillbringar den absolut största delen av sin livscykel som, skapas inte alls lika mycket variation. Det visar forskare från Uppsala universitet i en ny studie som publiceras i den vetenskapliga tidskriften PNAS.

Large predatory dinosaurs discovered in Skåne

Thu, 13 Oct 2022 08:43:00 GMT

Part of a jaw from one of the dinosaurs found in Norra Albert. The discovery is just over 200 million years old.
Photograph: Grzegorz Niedzwiedzki

Roughly 200-million-year-old footprints of large predatory dinosaurs, along with the skeletons of other dinosaurs, animals and plant fossils, have been discovered in the Norra Albert clay pit in northern Skåne. The discoveries surprised the researchers, as they show that carnivorous dinosaurs of this size existed much earlier than previously known.

Uppsala expedition to Greenland makes spectacular fossil discovery

Thu, 29 Sep 2022 07:59:00 GMT

Here is the whole team at the excavation site. From left: Alex Chavanne, Grzegorz Niedzwiedzki, Per Ahlberg, Henning Blom, Martin Qvarnström and John Marshall.

Following an exceptionally successful scientific expedition to Greenland, more than 200 kg of fossil material is on its way back to Uppsala. “The discoveries will revolutionize our understanding of the early evolution of land vertebrates” says Per Ahlberg, Professor of evolutionary Organismal Biology and leader of the expedition.

The world’s oldest heart found in placoderm

Wed, 28 Sep 2022 14:26:00 GMT

Aided by advanced X-ray technology, it has been possible to study the inner organs of placoderm fossils in this lump of limestone.

Most researchers can only guess how animals that lived hundreds of millions of years ago were built internally, given that innards disintegrate. However, researchers have now found extremely well-preserved hearts, stomachs, livers and intestines in 380-million-year-old placoderm fossils.

Svampar viktiga i sötvattensmiljöernas ekosystem

Wed, 21 Sep 2022 13:35:00 GMT

Löven som faller i bäcken koloniseras snabbt av svampar som bryter ner dem och gör näringen tillgänglig för andra organismer i vattendraget. Foto/bild: Getty Images

Tillgång till sötvatten är helt nödvändigt för vår överlevnad. Utan det lider vi brist på dricksvatten, fisk att äta och möjlighet att bevattna åkrar. Sjöar, floder och pölar är dessutom hem för otaliga arter. Men hur de här känsliga ekosystemen är uppbyggda är inte helt känt.

Hundreds of large habitat shifts have shaped life on Earth today

Thu, 11 Aug 2022 09:05:00 GMT

Sampling expedition in the Indian Ocean. Photograph: Ramon Massana, Institute of Marine Sciences (ICM) in Barcelona.

An international team led by Uppsala University researchers has uncovered that eukaryotes (organisms with a cellular nucleus) have made hundreds of big leaps from sea to soil and freshwater habitats, and vice versa, during their evolution. The results, published in Nature Ecology and Evolution, also provide insights into what the habitats of our ancient microbial ancestors looked like.

Video about Ancient DNA

Mon, 20 Jun 2022 11:58:00 GMT

Arbetet kräver minutiösa förberedelser i form av speciella renrumsoveraller, masker och handskar för att minska föroreningsrisken. Foto/bild: Marcus Holmqvist

Idag kan avancerad dna-teknik hjälpa oss förstå hur människor och folkgrupper levde och interagerade för tusentals år sedan. Följ med in i Uppsala universitets Ancient DNA-laboratorium, som sätter ljus på forntida kvarlevor.

Climate resilient microalgae could help restore coral reefs

Thu, 05 May 2022 11:12:00 GMT

Corals bleaching due to high water temperatures. Photograph: Getty Images

Coral species exhibit different temperature tolerances. This is in part due to the composition of their microalgae symbionts. With a new method, researchers from Uppsala University were able to predict how individual microalgae might behave under future temperature stress and identify more tolerant coral symbionts.

Lyssna på Per Ahlberg i forskarpodden

Fri, 25 Mar 2022 09:30:00 GMT

Ventastega - en tetrapod som levde under devontiden i vad som nu är Lettland. Foto/bild: Pavel Beznosov

För knappt 400 miljoner år sedan kravlade en grupp fiskar upp på land och gav upphov till de fyrbenta ryggradsdjuren. Per Ahlberg, professor i evolutionär organismbiologi, har länge forskat om de här varelserna som kallas tetrapoder och är alla groddjurs, reptilers, fåglars och däggdjurs gemensamma förfäder.

ERC-anslag till Fabien Burki

Fri, 18 Mar 2022 10:02:00 GMT

Europeiska forskningsrådet (ERC) delar ut 313 nya ERC Consolidator Grants i 24 olika länder. Bland mottagarna finns två forskare vid Uppsala universitet: Maria Tenje och Fabien Burki. Dessutom delas ett ERC Starting Grant ut till Ingela Lanekoff.

350 years old remains in a Stone Age site in Portugal

Mon, 28 Feb 2022 13:01:00 GMT

Maxilla and tooth from the specimen excavated at Cabeço da Amoreira in Portugal, used for biomolecular analyses in this study. Photograph: Rita Peyroteo Stjerna

An African man who lived just 350 years ago was buried in a prehistoric shell midden in Amoreira in Portugal. This was very surprising because Amoreira and other midden sites in the Muge region are well known by archaeologists for the cemeteries of the last hunter-gatherers living in the area 8 000 years-ago.

The reign of the dinosaurs ended in spring

Thu, 24 Feb 2022 15:07:00 GMT

The asteroid which killed nearly all of the dinosaurs struck Earth during springtime. This conclusion was drawn by an international team of researchers after having examined thin sections, high-resolution synchrotron X-ray scans, and carbon isotope records of the bones of fishes that died less than 60 minutes after the asteroid impacted. The team presents its findings in the journal Nature.

Exposure to chemical mixtures during pregnancy alters brain development

Fri, 18 Feb 2022 06:59:00 GMT

By linking human population studies with experiments in cell and animal models, researchers have provided evidence that complex mixtures of endocrine disrupting chemicals impact children’s brain development and language acquisition. With their novel approach, the scientists show that up to 54 per cent of pregnant women were exposed to experimentally defined levels of concern.

Previously unknown dinosaur habitat found in Poland

Fri, 14 Jan 2022 13:06:00 GMT

This footprint of a bipedal predatory dinosaur, 199 million years old, is so well preserved that even details such as claws and skin are distinguishable. Photograph: Grzegorz Niedzwiedzki

In summer 2021, in an opencast clay mine in Borkowice, Poland, researchers found what may be Europe’s largest array of dinosaur tracks. Several hundred very well-preserved footprints from at least seven dinosaur species were discovered, and the scientists say far more remain to be found.

Multimillion kronor bequest to mycological research at Uppsala University

Wed, 17 Nov 2021 14:16:00 GMT

The mycology research conducted at Uppsala University includes systematics and ecology. The image shows inedible false honey mushrooms growing from a tree stump. Photograph: Getty Images

Thanks to an SEK 10 million donation from two private citizens, a new foundation will be established: The Lennart and Kerstin Holm Scholarship Fund for Mycological Research. This will have a significant impact on fungal research at Uppsala University, which examines systematics, ecology and evolutionary biology.

Mattias Jakobsson intervjuad i Rektorspodden

Mon, 08 Nov 2021 10:06:00 GMT

Fossila fotspår visar fotens utveckling

Mon, 18 Oct 2021 08:32:00 GMT

De äldsta kända fotspåren av förmänniskor har hittats på Medelhavsön Kreta och är minst sex miljoner år gamla, enligt ett internationellt team av forskare från Tyskland, Sverige, Grekland, Egypten och England. Studien har publicerats i tidskriften Scientific Reports och leds av leds av Uwe Kirscher och Madelaine Böhme vid universitetet i Tübingen.

Matvanornas betydelse för moderna hajars uppkomst

Mon, 18 Oct 2021 07:26:00 GMT

Tidslinje över håbrandsartade och gråhajsartade hajar under de senaste 83 miljoner åren. Foto/bild: José Vitor Silva

Tillgången på byten och förmågan att anpassa sig till förändrade miljöer har haft avgörande betydelse i hajarnas utveckling. En studie där över 3 000 hajtänder analyserats ger ny inblick i hur dagens hajgrupper uppkom. Resultaten har publicerats i den vetenskapliga tidskriften Current Biology.

Philippine ethnic group has most Denisovan DNA

Mon, 16 Aug 2021 06:47:00 GMT

Fieldwork for the study on the island of Luzon. Photograph: Ophelia Persson

The Philippine ethnic group Ayta Magbukon has the highest proportion of genes from our extinct relatives, the Denisovans, a new study led by Uppsala University shows. Their Denisovan share far exceeds that of ethnic groups in Papua New Guinea, who previously held the record. The study is published in the scientific journal Current Biology.

Bakterie som misstänks ge sjukdom hos människa hittad hos svenska fladdermusfästingar

Mon, 09 Aug 2021 11:12:00 GMT

Den kortbenta fladdermusfästingen Carios vespertilionis tillhör familjen mjuka fästingar och föredrar generellt fladdermöss framför människor. Foto/bild: Peter Wilhelmsson

Den kortbenta fladdermusfästingen är en ganska vanlig blodsugare på fladdermöss i Sverige och det händer ibland att den också biter människor. I en ny studie beskriver forskare från Uppsala universitet och Linköpings universitet hur de funnit en art av borrelia hos fladdermusfästingar som de misstänker framkallar sjukdom hos människa. Det här är första gången arten påträffats i Sverige.

New beetle found in fossil faeces attributed to dinosaur ancestor

Fri, 02 Jul 2021 12:48:00 GMT

The animal to thank for the excellent preservation of Triamyxa coprolithica was probably the dinosaur ancestor Silesaurus opolensis. Photograph: Małgorzata Czaja

The tiny beetle Triamyxa coprolithica is the first-ever insect to be described from fossil faeces. The animal the researchers have to thank for the excellent preservation was probably the dinosaur ancestor Silesaurus opolensis, which 230 million years ago ingested the small beetle in large numbers.

Komplett dna från 35 000 år gammal kvinna klarlagt

Wed, 19 May 2021 11:06:00 GMT

Genomet från skallbenen från kvinnan Peştera Muierii 1 visar att hon är en föregångare till de jägare-samlare-grupper som levde i Europa fram till istidens slut. Foto/bild: Mattias Jakobsson

För första gången har man lyckats få fram hela genomet från de 35 000 år gamla skallbenen från kvinnan Peştera Muierii 1, i Rumänien. Nu har en forskargrupp, ledd av Mattias Jakobsson vid institutionen för organismbiologi, klarlagt hennes kompletta dna.

Ny studie förklarar hur plastkemikalier kan orsaka lägre IQ

Wed, 19 May 2021 11:00:00 GMT

I en ny studie söker forskarna förklara varför exponering för ämnet bisfenol F under fosterstadiet kan kopplas till lägre IQ vid sju års ålder,

Plastkemikalien bisfenol F kan framkalla förändringar i en gen som är viktig för neurologisk utveckling. Det har forskare vid Uppsala universitet och Karlstads universitet upptäckt. Mekanismen kan förklara varför exponering för ämnet under fosterstadiet kan kopplas till lägre IQ vid sju års ålder, ett samband samma forskargrupp tidigare sett.

Big ERC grant for research on the origin of land animals

Thu, 22 Apr 2021 12:33:00 GMT

Professor Per Ahlberg conducts research on the origin of land animals. Here with a fossil jaw from the lobe-finned fish Polyplocodus – probably a close relative of the first tetrapods. Photograph: Mikael Wallerstedt

The European Research Council (ERC) has now distributed the grants in its 2020 ERC Advanced Grants call and Uppsala University is one of the recipients. The grant of EUR 2.4 million goes to Per Ahlberg, Professor of Evolutionary Organismal Biology, whose research seeks to reveal more about the origins of land animals by studying the tracks left by our more than 360 million-year-old ancestors – the ‘tetrapods’.

Largest-ever DNA mapping study of the Philippines

Thu, 25 Mar 2021 09:21:00 GMT

Over 50 millennia, at least five major immigration waves have successively populated the Philippines, the most comprehensive survey of genetic variations in the country to date shows. This Uppsala University study comprises 2.3 million DNA markers from some 1,000 individuals and suggests that climate change may have played a role in the mass movement of populations.

New light shed on the early evolution of limb bone marrow

Wed, 03 Mar 2021 09:42:00 GMT

When and how bone marrow first originated in the limbs of early four-legged animals is disputed in evolutionary biology. With the help of powerful X-ray technology, an international research team, led by Uppsala University, has now discovered that this evolutionary adaptation most likely took place after the first tetrapods stepped ashore. The study is published in the scientific journal eLife.

Multigenerational effects of environmental toxins

Tue, 16 Feb 2021 15:17:00 GMT

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The effects of the endocrine disruptor linuron on frogs are not limited to those exposed, but are passed on to their offspring and grand-offspring. First generation offspring have reduced body weight and decreased fertility, while second generation offspring have increased body weight and a disrupted metabolism. This is demonstrated by a new study conducted by researchers at Uppsala University and Stockholm University that has now been published in the journal Science of the Total Environment.

Chronic stress causes genetic changes in chickens

Fri, 13 Nov 2020 15:28:00 GMT

Researchers looked for signs of how chronic stress can affect the genes of the chickens, causing “epigenetic changes”. Photograph: Matton

How can stress in animals be measured? Scientists from Uppsala University and elsewhere have now found that what are known as epigenetic biomarkers could be used to detect long-term exposure to stress in commercially raised chickens. This may, in time, lead to improved conditions in animal rearing. The study has been published in the journal Frontiers in Genetics.

Kraftiga tidvatten kan ha drivit på fiskarnas utveckling

Thu, 29 Oct 2020 08:22:00 GMT

Simulation of the tide at the end of silur. The colors indicate the tide height in meters for two different tide parameters. Photograph: Mattias Green/Bangor University

Big tidal ranges some 400 million years ago may have initiated the evolution of bony fish and land vertebrates. This theory is now supported by researchers in the UK and at Uppsala University who, for the first time, have used established mathematical models to simulate tides on Earth during this period. The study has been published in Proceedings of the Royal Society A.

A tiny jaw from Greenland sheds light on the origin of complex teeth

Wed, 14 Oct 2020 09:21:00 GMT

A team of scientists led from Uppsala University have described the earliest known example of dentary bone with two rows of cusps on molars and double-rooted teeth. The new findings offer insight into mammal tooth evolution, particularly the development of double-rooted teeth. The results are published in the scientific journal PNAS.

A rare look at a dinosaur baby inside its egg

Mon, 31 Aug 2020 13:12:00 GMT

Using synchrotron X-rays, the researchers created an image of the skull from a sauropod embryo, including the parts that were embedded in the rocks. Photograph: Photo: Kundrát et al

The great long-necked dinosaurs, or sauropods, of the Jurassic and Cretaceous periods were the largest animals ever to live on land. In a paper published in Current Biology, an international team of researchers including members from Uppsala University use cutting-edge imaging technology to give us a unique glimpse of the very beginning of a sauropod life: the face of an unhatched young inside an egg.

Tuatarans arvsmassa visar dess spännande historia

Fri, 07 Aug 2020 10:48:00 GMT

Tuataran kan bli över 100 år gammal. Foto/bild: Nicola Nelson

Ett internationellt forskarteam har kartlagt genomet hos tuataran, en sällsynt reptil som endast finns på Nya Zeeland. Arten, som också kallas bryggödla på svenska, bildade en egen evolutionär gren redan för 250 miljoner år sedan. I den nya studien har forskarna bland annat kunnat se att tuataran har fler gener som skyddar mot åldersrelaterade skador än något annat undersökt ryggradsdjur. Forskningen publiceras i tidskriften Nature.

Ny kunskap om kontakten mellan olika stenålderskulturer

Mon, 08 Jun 2020 07:06:00 GMT

Mannen i grav 54 från det gropkeramiska gravfältet Ajvide på Gotland är begravd i raklångt ryggläge, typiskt för gropkeramiska gravar. Foto/bild: Göran Burenhult

Vilken sorts utbyte hade stenålderns olika kulturer med varandra? I en ny tvärvetenskaplig studie har forskare kombinerat arkeologisk och genetisk information för att bättre förstå kulturella influenser från stridsyxekultur som påträffats i gravar från den så kallade gropkeramiska kulturen. Resultaten publiceras i den vetenskapliga tidskriften American Journal of Physical Anthropology.

DNA från Dödahavsrullarna en ny ingång till historien

Wed, 03 Jun 2020 08:03:00 GMT

Dödahavsrullarna består av 25 000 fragment av pergament och papyrus som hittades 1947 i Qumran på Västbanken. De gömdes undan där år 70 e. Kr. och är ungefär 2 000 år gamla. Foto/bild: Courtesy of the Israel Antiquities uthority. Shai Halevi

Forskare vid Uppsala universitet har, tillsammans med kollegor i Israel, lyckats utvinna DNA ur de över 2 000 år gamla Dödahavsrullarna. Informationen om djuren vars skinn använts till pergament gör det möjligt för historiker att dra slutsatser om vilka textfragment som hör ihop men också om hur pass representativa texterna verkligen är för judendomen vid den här tiden.

Short film about Evolution and Developmental biology

Wed, 13 May 2020 13:15:00 GMT

Thousands of teeth tell the long history of sharks

Tue, 10 Mar 2020 12:31:00 GMT

Doctoral student Mohamad Bazzi holding a lamniform shark tooth. Photograph: Jordi Estefa

Sharks have roamed the earth’s oceans for around 450 million years. Although they survived the catastrophic extinction event that wiped out the dinosaurs, that event did alter the balance between two important shark groups. In his degree project, Mohamad Bazzi investigates which types of shark have been most successful during different periods.

Per Ahlberg i Vetenskapens värld

Mon, 02 Mar 2020 11:57:00 GMT

Meet our scientists at Scifest!

Mon, 02 Mar 2020 08:35:00 GMT

On March 5 - 7, Uppsala University and SLU hosts the science festival Scifest at Fyrishov. Many scientists from the Department of Organismal Biology will be there.

Professor Joëlle Rüegg intervjuad i TV4

Mon, 10 Feb 2020 12:01:00 GMT

Carina Schlebusch ny Wallenberg Academy Fellow

Tue, 03 Dec 2019 15:14:00 GMT

Carina Schlebusch, Terje Falck-Ytter och Haining Tian vid Uppsala universitet har utsetts till Wallenberg Academy Fellows. Utnämningen kommer med ett femårigt anslag som ska främja långsiktighet i forskningen.

Björkénska priset för framstående forskning till evolutionsbiolog och paleontolog

Fri, 29 Nov 2019 14:58:00 GMT

Per Ahlberg, professor inom evolution och utvecklingsbiologi vid institutionen för organismbiologi och Lars Holmer, professor i historisk geologi och paleontologi vid institutionen för geovetenskaper har utsetts till 2019 års mottagare av Björkénska priset – ett av Uppsala universitets största vetenskapliga pris för framstående forskning.

2019 års Oscarspris till Grzegorz Niedzwiedzki och Yaffa Epstein

Fri, 29 Nov 2019 10:40:00 GMT

Uppsala universitets Oscarspris till yngre forskare har tilldelats Yaffa Epstein vid juridiska institutionen och Grzegorz Niedzwiedzki vid institutionen för organismbiologi.

New and surprising light on the earliest tetrapods

Mon, 28 Oct 2019 09:51:00 GMT

Artistic reconstruction of the Sosnogorsk lagoon just before a deadly storm. Credit: Mikhail Shekhanov for the Ukhta Local Museum.

Superbly preserved fossils from Russia, excavated with support of a grant from the National Geographic Society and described today by an international team in the leading scientific journal Nature, cast new and surprising light on one of the earliest tetrapods – the group of animals that made the evolutionary transition from water to land and ultimately became the ancestors not just of amphibians, reptiles, birds and mammals, but of ourselves.

DNA study sheds new light on the Neolithic Battle Axe Culture

Mon, 21 Oct 2019 10:42:00 GMT

Skeleton from a man linked to the Scandinavian battle ax culture that arose about 5,000 years ago. DNA from this individual was analyzed in the study. Photograph: Jonas Karlsson, Östergötland Museum

In an interdisciplinary study published in Proceedings of the Royal Society B, an international research team has combined archaeological, genetic and stable isotope data to understand the demographic processes associated with the iconic Battle Axe Culture and its introduction in Scandinavia.

Photosynthesis in the dark

Mon, 23 Sep 2019 13:39:00 GMT

First prize at poster presentation

Mon, 23 Sep 2019 11:06:00 GMT

Who Does What in the Heterogeneous VTA?

Mon, 23 Sep 2019 08:15:00 GMT

Filter-feeding pterosaurs were the flamingoes of the Late Jurassic

Mon, 02 Sep 2019 13:51:00 GMT

The scans revealed many microscopic food remains including foraminifera (small amoeboid protists with external shells), small shells of marine invertebrates and possible remains of polychaete worms. Photograph: Qvarnström mfl.

Modern flamingoes employ filter feeding and their feces are, as a result, rich in remains of microscopically-small aquatic prey. Very similar contents are described from more than 150 million year old pterosaur droppings in a recent paper in PeerJ. This represents the first direct evidence of filter-feeding in Late Jurassic pterosaurs and demonstrates that their diet and feeding environment were similar to those of modern flamingoes.

New article about fairy rings

Wed, 21 Aug 2019 13:39:00 GMT

Studies of fungi provide new knowledge of harmful mutations in cells

Mon, 12 Aug 2019 09:20:00 GMT

Historically, fairy rings have been associated with various supernatural notions, such as traces of witches’ cauldrons, dancing elves or other magical creatures. Photograph: Markus Hiltunen

Long-lived mushrooms that grow in ‘fairy rings’ accumulate surprisingly few mutations over time. This finding indicates that their protection against harmful mutations is well developed. The results, to be published in the esteemed journal Current Biology, are interesting in terms of both medicine and evolutionary biology.

Uppsalabotanist hedras i Addis Abeba

Wed, 26 Jun 2019 14:16:00 GMT

Inga Hedberg i tjänsterummet på institutionen för organismbiologi

I maj åkte Inga Hedberg tillbaka till Addis Abeba för att hedras för sitt arbete med Flora of Ethiopia and Eritrea som färdigställdes för tio år sedan. En flora i 8 volymer som nog inte hade blivit av utan Inga och Olle Hedberg.

Paper second place winner of Mark A. Smith Award in Neurochemistry

Mon, 06 May 2019 06:47:00 GMT

Megalith tombs were family graves in European Stone Age

Mon, 29 Apr 2019 08:42:00 GMT

Grave in Primerose, Ireland. The team found an overrepresentation of males compared to females in the megalith tombs on the British Isles. Photograph: Göran Burenhult

In a new study published in the Proceedings of the National Academy of Sciences, an international research team, led from Uppsala University, discovered kin relationships among Stone Age individuals buried in megalithic tombs on Ireland and in Sweden. The kin relations can be traced for more than ten generations and suggests that megaliths were graves for kindred groups in Stone Age northwestern Europe.

Meet biologists at Scifest!

Fri, 08 Mar 2019 08:18:00 GMT

Mattias Jakobsson medverkar i "De första svenskarna" på SVT

Wed, 20 Feb 2019 12:06:00 GMT

New findings about the 210 million year old dinosaur-like archosaur

Mon, 04 Feb 2019 07:43:00 GMT

Coprolites, or fossil droppings, of the dinosaur-like archosaur Smok wawelski contain lots of chewed-up bone fragments. Photograph: Gerard Gierlinski

Coprolites, or fossil droppings, of the dinosaur-like archosaur Smok wawelski contain lots of chewed-up bone fragments. This led researchers at Uppsala University to conclude that this top predator was exploiting bones for salt and marrow, a behavior often linked to mammals but seldom to archosaurs.

Individual lichens can have up to three fungi, study shows

Mon, 21 Jan 2019 07:54:00 GMT

Wolf lichens can have up to three different fungi. Photo: Veera Tuvoinen.

International research team uses genome sequencing to show that a lichen can contain up to three different fungi.

Gigantic mammal “cousin” discovered

Mon, 26 Nov 2018 08:40:00 GMT

Skeleton of Lisowicia bojani. Photograph: Tomasz Sulej

During the Triassic period (252–201 million years ago) mammal-like reptiles called therapsids co-existed with ancestors to dinosaurs, crocodiles, mammals, pterosaurs, turtles, frogs, and lizards. One group of therapsids are the dicynodonts. Researchers at Uppsala University in Sweden, together with colleagues in Poland, have discovered fossils from a new genus of gigantic dicynodont. The new species is described in the journal Science.

Ny Archaeopteryx-art upptäckt

Mon, 05 Nov 2018 08:11:00 GMT

Rekonstruktion av Archaeopteryx albersdoerferi av Zhao Chuang. Foto/bild: Zhao Chuang

Efter sju år av vetenskapliga undersökningar kan forskare konstatera att en ny art av dinofågeln Archaeopteryx har hittats, Archaeopteryx albersdoerferi. Flera forskare från Uppsala universitet är delaktiga i studien, vars resultat visar att den nya arten är ungefär 400 000 år yngre än de andra Archaeopteryx som tidigare har påträffats.

Unravelling the genetics of fungal fratricide

Mon, 15 Oct 2018 09:32:00 GMT

Selfish genes are genes that are passed on to the next generation but confer no advantage on the individual as a whole, and may sometimes be harmful. Researchers at Uppsala University have, for the first time, sequenced (or charted) two selfish genes in the fungus Neurospora intermedia that cause fungal spores to kill their siblings. Unexpectedly, the genes were not related to each other, perhaps indicating that selfish genes are more common than previously thought.

New findings about the role of glutamate release in addiction

Thu, 30 Aug 2018 11:09:00 GMT

The end-Cretaceous extinction unleashed modern shark diversity

Mon, 06 Aug 2018 07:07:00 GMT

A study that examined the shape of hundreds of fossilized shark teeth suggests that modern shark biodiversity was triggered by the end-Cretaceous mass extinction event, about 66 million years ago.

Understanding soil through its microbiome

Mon, 06 Aug 2018 06:57:00 GMT

First global survey of soil genomics reveals a war between fungi and bacteria.

Niclas König awarded grant from the Swedish Brain Foundation

Mon, 25 Jun 2018 08:02:00 GMT

Endocrine-disrupting pesticides impair frog reproduction

Thu, 14 Jun 2018 10:45:00 GMT

In a new study, researchers from Sweden and Britain have investigated how the endocrine-disrupting substance linuron affects reproduction in the West African clawed frog, Xenopus tropicalis. The scientists found that linuron, which is used as a pesticicide, impaired the males' fertility, and that tadpoles developed ovaries instead of testicles to a greater extent, which caused a female?biased sex ratio. The results are published in the journal Scientific Reports.

Per Ahlberg elected as new member of Academy of Europe

Mon, 14 May 2018 14:04:00 GMT

Uppsala Photon Science Award

Mon, 07 May 2018 08:10:00 GMT

Genetic prehistory of Iberia

Tue, 24 Apr 2018 11:37:00 GMT

In a multidisciplinary study published in PNAS, an international team of researchers combined archaeological, genetic and stable isotope data to encapsulate 4,000 years of Iberian biomolecular prehistory. Scientists from Human Evolution were co-authors to the study.

New report on the science of pesticide risk assessment for amphibians and reptiles

Mon, 26 Mar 2018 11:51:00 GMT

Fossil berättar om hur första dinofågeln Archaeopteryx kunde flyga

Mon, 26 Mar 2018 08:11:00 GMT

Frågan om huruvida dinofågeln Archaeopteryx från yngre juraperioden höll sig på marken, var en glidare eller en aktiv flygare har fascinerat paleontologer i årtionden. En internationell forskargrupp har använt synkrotron-mikrotomografi för att kunna hitta svar på frågan utan att skada fossilen. Resultaten visar att Archaeopteryx vingar var utformade för tillfälliga flygturer, men inte för så avancerade flygningar som dagens fåglar klarar.

Genomic data suggest two main migrations into Scandinavia after the last ice age

Tue, 20 Mar 2018 15:12:00 GMT

The genome of Inocybe terrigena

Tue, 20 Mar 2018 15:08:00 GMT

Single cell genomics shows relations among Dinoflagellates

Mon, 19 Mar 2018 15:15:00 GMT

What fin spines can tell us about evolution

Mon, 19 Mar 2018 14:54:00 GMT

Water deficit triggers the formation of extra water transporting strands in plant roots

Mon, 19 Mar 2018 14:12:00 GMT

The microbiome of Fairy Rings

Mon, 19 Mar 2018 13:03:00 GMT

Genetic data show mainly men migrated to Europe from the Pontic steppe 5,000 years ago

Thu, 23 Feb 2017 10:35:00 GMT

A new study published in PNAS, looking at the sex-specifically inherited X chromosome of prehistoric human remains, shows that hardly any women took part in the extensive migration from the Pontic-Caspian Steppe approximately 5,000 years ago.
Read more

Biodiversity in focus at "Systematikdagarna 2016" in Uppsala

Wed, 16 Nov 2016 08:16:00 GMT

This year Systematics days take place 21–22 November in Uppsala. Researchers and others with an interest in taxonomy and systematics get together to listen to each other, discuss and exchange experiences. It is possible to come and listen to a single talk if you would like that.

Read the interview with a passionate plant systematist

Wed, 14 Sep 2016 07:32:00 GMT

As a researcher of systematic botany, Magnus Lidén has discovered around 150 new flowering plants. His field trips have included India, China and Iran and have not always been problem-free. Read the interview

Sandra Baldauf awarded

Wed, 07 Oct 2015 11:25:00 GMT

Björkénska priset has been awarded to Professor Sandra Baldauf, at the Department of Organismal Biology, Systematic Biology.

Tooth enamel originated in the skin

Thu, 24 Sep 2015 07:52:00 GMT

When did the enamel that covers our teeth evolve? And where in the body did it first appear? In the latest issue of the journal Nature, researchers from Uppsala University and the Institute of Vertebrate Palaeontology and Palaeoanthropology (IVPP) in Beijing, China, combine data from palaeontology and genomics to arrive at a clear but unexpected answer: enamel originated in the skin and colonized the teeth much later.

Häxring ska avslöja svampars parasex

Tue, 08 Sep 2015 13:57:00 GMT

Nu hoppas svenska forskare för första gången få bevis för att svampar är parasexuella även i naturen. Läs mer och lyssna på Vetenskapsradions veckomagasin

Stensiö Award till Sophie Sanchez

Tue, 01 Sep 2015 08:50:00 GMT

Sophie Sanchez at the department of Evolution and Development has been awarded the Stensiö award for her outstanding contributions to bone palaeohistology.

The ticks are spreading north (in Swedish)

Mon, 24 Aug 2015 08:53:00 GMT

Listen to radio interview with researcher Thomas Jaenson at radio P4 Västerbotten

Improving Environmental Risk Assessment of Human Pharmaceuticals

Wed, 29 Jul 2015 08:28:00 GMT

Read the article that has been mentioned in the newsletter of the EU kommission nyhetsbrev.

Mass extinction of animal species and insects

Mon, 22 Jun 2015 09:02:00 GMT

Listen to the radio show (in Swedish) featuring Per Ahlberg, Professor of Evolutionary Organismal Biology at Uppsala University, and other researchers explaining what is about to happen and what we can do to prevent it.

Peking Man tooth reveals details of ancient humans

Mon, 11 May 2015 11:56:00 GMT

Peking Man tooth reveals details of ancient humans

Optogenetik i hjärnans belöningssystem

Fri, 10 Apr 2015 11:23:00 GMT

2015-05-12

Den ljusdrivna metoden optogenetik har haft stor genomslagskraft inom neurovetenskapens olika områden, inte minst för att förstå hur de nervcellsnätverk som är involverade i olika slags beroenden fungerar. I en reviewartikel som publiceras denna vecka i Trends of Neurosciences beskriver Stéfano Pupe och Åsa Mackenzie, funktionell neurobiologi, de studier som hittills bedrivits inom forskarvärlden med målet att optogenetiskt aktivera eller inaktivera olika cellpopulationer i VTA-området för att ta reda på hur dessa populationer bidrar till belönings- och aversionsrelaterade beteenden.

Hjärnfonden awards Åsa Mackenzie

Tue, 16 Jun 2015 11:31:00 GMT

New findings about the role of glutamate release in addiction

Mon, 24 Sep 2018 09:30:00 GMT

Niclas König awarded grant from the Swedish Brain Foundation

Mon, 24 Sep 2018 09:12:00 GMT

Science Summit

Thu, 28 Apr 2016 09:45:00 GMT

Zebrafiskfaciliteten presenterar på svenskt näringslivs årsstämma

Thu, 19 May 2016 09:40:00 GMT

Möt oss på SciFest 2016: 3-5 mars

Wed, 02 Mar 2016 09:24:00 GMT

Den 3-5 mars intar vetenskapsfestivalen SciFest multihallarna i Fyrishov. Årets tema är framtidsstaden. Zebrafiskfaciliteten deltar och visar upp hur embryon utvecklas samt hur man jobbar i ett fisklab.

A new zebrafish CRISPR/Cas9 technology available at SciLifeLab

Thu, 11 Jun 2015 11:10:00 GMT

The zebrafish facility at SciLifeLab has participated in the development of a high-throughput gene targeting method in zebrafish, presented in the July issue of Genome Research. The technology is now offered as a service for Swedish researchers. For more information see SciLifeLabs News.

9th European Zebrafish meeting in Oslo 28/6-2/7 2015

Thu, 04 Jun 2015 11:27:00 GMT

The 9th European Zebrafish meeting will take place in Oslo during the 28th of June - 2nd of July. For more information go to: 9th EZM Oslo 2015

Visit us during SciLifeLabs Open House Day 27th of May 2015.

Wed, 27 May 2015 11:22:00 GMT

Take the opportunity to get to know a new model system! Between 13.00-13.45 you are welcome to visit our facility and ask us questions.

SciLifeLab day in Stockholm 29th of April 2015

Wed, 29 Apr 2015 11:18:00 GMT

This year the SciLifeLab day takes place in Aula Medica at the Karolinska Institute 29th of april. For more information: SciLifeLab day 2015

Ambassador Visit

Wed, 22 Apr 2015 11:11:00 GMT

The zebrafish facility will participate in a lab exhibition when Uppsala university and SciLifeLab is visited by ambassadors from 21 different countries.

SciFest 19-21/3 - Come and visit!

Fri, 20 Mar 2015 12:01:00 GMT

19th - 21st of March SciFest is taking place at Fyrishov. The zebrafish facility is one of the exhibitors. Come visit us!