Press releases

Wild Guinea Pig, photo: Anja Günther
Wild Guinea Pig, photo: Anja Günther

New epigenetic study reveals how guinea pig fathers pass on adaptive responses to environmental changes

Adaptations to environmental change are the most important asset for the persistence of any plant or animal species. This is usually achieved through genetic mutation and selection, a slow process driven by chance. Faster and more targeted are so called epigenetic modifications. They do not alter the genetic code but promote specialisations during cell maturation. A new study carried out by scientists from the Leibniz-IZW in Germany shows for wild guinea pigs that epigenetic modifications specific to individual environmental factors are passed on to the next generation. The study is published in the scientific journal “Genes”.

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Nyctalus noctula, Foto: Uwe Hoffmeister
Nyctalus noctula, Foto : Uwe Hoffmeister

Multicultural creatures of habit – Long-term study reveals migratory patterns of bats

Every year trillions of animals migrate for thousands of kilometres between their summer and winter areas. Among them are several species of bats whose journeys in the dark of the night unfold largely unnoticed by humans and have only partially been investigated by science. A reconstruction of individual migration patterns of the common noctule (Nyctalus noctula) in Central Europe has now revealed that travelling distances vary largely among individuals, yet overall females cover longer distances than males. Local bat populations, which remain separate when females rear their offspring in summer, strongly mix in their hibernacula, the roost where they hibernate in winter. Additionally the study showed that individuals rarely change their migration habits – a behaviour that could prove problematic when bats are forced to adjust to rapidly changing ecosystems. The study was published in the „Proceedings of the Royal Society: Biological Sciences“.

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Lung lavage at rhino  (Foto: Jonathan Cracknell)
Lung lavage at rhino (Foto: Jonathan Cracknell)

Lung lavage as new test method improves tuberculosis diagnosis in rhinoceros

Diseases and tuberculosis in particular can pose considerable challenges for wildlife. In order to avoid epidemics within populations or to treat individual animals belonging to highly endangered species, fast and reliable tests are paramount. However present tuberculosis testing in rhinos relies on skin tests developed in the 1960s and designed for cattle bearing high risk of false diagnosis in rhinos. To improve diagnostic standards an international team of scientists lead by institutes in Berlin and Jena, Germany, performed repeated lung lavage as a new approach for tuberculosis diagnosis in rhinoceros. Subsequent genetic tests reliably identified mycobacteria in the animals’ respiratory fluids – with minimal stress and risk for the rhinos. The study has been published in the journal PLOS ONE. 

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Hyena cubs (photo: Sarah Benhaiem)
Hyena cubs (photo: Sarah Benhaiem)

Hyena population recovered slowly from a disease epidemic

Infectious diseases can substantially reduce the size of wildlife populations, thereby affecting both the dynamics of ecosystems and biodiversity. Predicting the long-term consequences of epidemics is thus essential for conservation. Researchers from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) in Berlin and from the Center for Functional Ecology and Evolution (CEFE) in Montpellier, France, have now developed a mathematical model ("matrix model") to determine the impact of a major epidemic of canine distemper virus (CDV) on the population of spotted hyenas in the Serengeti National Park in Tanzania. The results of the study are published in the new Nature open-access journal Communications Biology.

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An Annamite striped rabbit captured by a camera trap (Photo: Leibniz-IZW / WWF-Vietnam CarBi Project / Hue Saola Nature Reserve)
An Annamite striped rabbit captured by a camera trap (Photo: Leibniz-IZW / WWF-Vietnam CarBi Project / Hue Saola Nature Reserve)

Fading stripes in Southeast Asia: First insight into the ecology of an elusive and threatened rabbit

The Annamite mountains of Vietnam and Lao PDR (Laos) harbour exceptional species richness and endemism, but its wildlife is under threat from widespread and intensive poaching. The region is home to the Annamite striped rabbit (Nesolagus timminsi), a little-known lagomorph only discovered by science in 1995. A new study carried out by the Leibniz Institute for Zoo- and Wildlife Research (Leibniz-IZW) in collaboration with WWF-Vietnam, WWF-Laos, and the Central Institute for Natural Resources and Environmental Sciences (CRES) of the Vietnam National University, provides the first detailed information about the species ecology. The study is published in the international journal Oryx.

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