One of the latter, Daphnia pulex, is the first crustacean to have its genome sequenced. A researcher from the University of Gothenburg has made a surprising discovery.
The sequencing has been done in an international research network known as the Daphnia Genomics Consortium. The Swedish contribution – the discovery that the genome of Daphnia contains neurotrophins – surprisingly shows that the nervous system of crustaceans is more complex than previously believed.
“In mammals, neurotrophins play a role in learning, memory and development of the nervous system. For a long time researchers considered neurotrophins and their receptors to be characteristic of vertebrates, but that is not the case,” says Karen Wilson at the Department of Marine Ecology, University of Gothenburg, who is a member of the consortium.
The neurotrophins and their receptors in mammals are known to be sensitive to oxygen deficiency, environmental degradation and toxins. This may mean that the neurotrophins in crustacea are equally exposed.
“This is an important finding, as climate change, acidification and pollution may affect behaviour in crustaceans in both freshwater and marine environments.”
Daphnia pulex is a crustacean species half a centimetre in size found in several parts of the world. In Sweden it lives both in lakes, ponds and coastal waters.
Crustaceans represent a highly variable group of animals found in both freshwater and marine environments. Because of their diversity and worldwide distribution, they play an important ecological role. They are also of great economic significance. Some crustacean species are directly consumed by humans (prawns, crayfish, lobster), while others serve as an indirect source of food when crustaceans in the larval stage are eaten by others. Other crustaceans are the cause of costs, such as the salmon louse, a fish parasite that attacks salmonids, and the barnacle, which causes fouling of man-made structures in the sea.
The article The Ecoresponsive Genome of Daphnia pulex is a compilation of the combined sequencing of Daphnia pulex genes based on the results obtained in the Daphnia Genomics Consortium. The article has been published in the scientific journal Science.Contact:
Helena Aaberg | idw
Signaling Pathways to the Nucleus
19.03.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau
In monogamous species, a compatible partner is more important than an ornamented one
19.03.2018 | Max-Planck-Institut für Ornithologie
For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.
In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
19.03.2018 | Event News
16.03.2018 | Event News
13.03.2018 | Event News
19.03.2018 | Physics and Astronomy
19.03.2018 | Materials Sciences
19.03.2018 | Event News