PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

A new trout species described from the Alakır Stream in Antalya, Turkey

A new trout species described from the Alakır Stream in Antalya, Turkey
2014-12-12
(Press-News.org) A group of researchers from Recep Tayyip Erdoğan University, Faculty of Fisheries in Turkey discovered a new trout species. The newly described species Salmo kottelati, belongs to the Salmonidae family, which includes salmons, trouts, chars, graylings and freshwater whitefishes.

Salmonids include over 200 species, which have a high economic value because of their taste and famed sporting qualities.

The genus Salmo is widely distributed in rivers and streams of basins of the Marmara, Black, Aegean and Mediterranean seas. The genus is represented by 12 species in Turkey.

The new species is distinguished from the other members of genera by having fewer parr marks along lateral line, and a larger mouth gape and maxilla, which is a part of the fish jaw.

Although salmonids commonly live in mountain lakes, headwater and upper reaches of streams and rivers, some species spend long parts of their lives in the sea but return to the rivers and streams for reproduce. This migratory lifestyle is known as anadromous. Salmonids are predatory fishes feeding on small crustaceans, aquatic insects and also small fish.

In order to understand the rich genus diversity in Turkey, samples were collected from more than 200 localities throughout the country between 2004 and 2014. The paper, published in the open access journal ZooKeys, focuses only on the Salmo species distributed in the Alakır Stream drainage, from where the new species was described.

The new species Salmo kottelati is named for Maurice Kottelat, who contributed to the knowledge of the fish fauna of Europe and Asia.

The new species inhabits cold and clear water, with moderate current, and gravel and pebble substrate. Its maximum known body length is 21 cm, while the largest representative of the family can reach up to 2 m in length.

INFORMATION:

Original source:

Turan D, Doğan E, Kaya C, Kanyılmaz M (2014) Salmo kottelati, a new species of trout from Alakır Stream, draining to the Mediterranean in southern Anatolia, Turkey (Teleostei, Salmonidae). ZooKeys 462: 135-151. doi: 10.3897/zookeys.462.8177


[Attachments] See images for this press release:
A new trout species described from the Alakır Stream in Antalya, Turkey A new trout species described from the Alakır Stream in Antalya, Turkey 2

ELSE PRESS RELEASES FROM THIS DATE:

Viral 'fossils' study on birds finds fewer infections than in mammals

2014-12-12
In a contribution to an extraordinary international scientific collaboration the University of Sydney found that genomic 'fossils' of past viral infections are up to thirteen times less common in birds than mammals. "We found that only found only five viral families have left a footprint in the bird genome (genetic material) during evolution. Our study therefore suggests that birds are either less susceptible to viral invasions or purge them more effectively than mammals," said Professor Edward Holmes, from the University of Sydney's Charles Perkins Centre, School of ...

22.7 percent of pregnant women suffer intimate partner violence

22.7 percent of pregnant women suffer intimate partner violence
2014-12-12
A new study analyses the violent behaviours exhibited towards pregnant women. While 21% of women suffer emotional violence during pregnancy, 3.6% encounter physical or sexual violence. Furthermore, 36.1% of those who reported physical violence claimed that it happened "very often" or "daily". Whilst for many women pregnancy is a happy time, for almost one in four it turns out not to be so enjoyable. An investigation into the prevalence of domestic violence against pregnant women has found that 22.7% endure some kind of violence - emotional, physical or sexual - within ...

Researchers use real data rather than theory to measure the cosmos

2014-12-12
For the first time researchers have measured large distances in the Universe using data, rather than calculations related to general relativity. A research team from Imperial College London and the University of Barcelona has used data from astronomical surveys to measure a standard distance that is central to our understanding of the expansion of the universe. Previously the size of this 'standard ruler' has only been predicted from theoretical models that rely on general relativity to explain gravity at large scales. The new study is the first to measure it using ...

Science: Big data explain evolution of birds

Science: Big data explain evolution of birds
2014-12-12
About 95 percent of the more than 10,000 bird species known only evolved upon the extinction of dinosaurs about 66 million years ago. According to computer analyses of the genetic data, today's diversity developed from a few species at a virtually explosive rate after 15 million years already. KIT scientists designed the algorithms for the comprehensive analysis of the evolution of birds. To obtain the results that are now presented in the Science journal, a computing capacity of 300 processor-years was required. (DOI 10.1126/science.1253451) "Computation of these trees ...

Cocaine consumption quadruples the risk of sudden death in people between 19 and 49

2014-12-12
This news release is available in Spanish. What is more, this study is the first one conducted using forensic samples taken from deceased individuals. So they examined all the sudden deaths that underwent forensic analysis and which took place in Bizkaia over a seven-year period, between January 2003 and December 2009. The post-mortem examinations were conducted by the only service existing in the province: the Forensic Pathology Service of Bizkaia of the Basque Institute of Forensic Medicine. The research has been published by the specialised journal Addiction, the ...

Link between low blood glucose and cardiovascular events revealed

Link between low blood glucose and cardiovascular events revealed
2014-12-12
A study involving scientists from the University of Leicester has established a link between hypoglycaemia and increased risk of cardiovascular events and mortality in patients with diabetes. Professors Kamlesh Khunti and Melanie Davies, scientists from the University of Leicester's Diabetes Research Centre, have confirmed an association between hypoglycaemia and an increased risk of cardiovascular events and mortality in insulin-treated patients with diabetes, which could lead to changes in the way some patients' treatment is managed. The results were published online ...

More-flexible digital communication

2014-12-12
Communication protocols for digital devices are very efficient but also very brittle: They require information to be specified in a precise order with a precise number of bits. If sender and receiver -- say, a computer and a printer -- are off by even a single bit relative to each other, communication between them breaks down entirely. Humans are much more flexible. Two strangers may come to a conversation with wildly differing vocabularies and frames of reference, but they will quickly assess the extent of their mutual understanding and tailor their speech accordingly. Madhu ...

Slow rate of croc mutation revealed in major Science study

Slow rate of croc mutation revealed in major Science study
2014-12-12
Crocodilians, including the Australian saltwater crocodile, mutate at about a quarter of the rate of birds, new research has revealed. The discovery is the result of genome sequencing three crocodilian species - the Australian saltwater crocodile, the American alligator and the Indian gharial - by an international collaboration of scientists, including six from the University of Sydney's Faculty of Veterinary Science. The research is reported in a special edition of Science published on 12 December dedicated to all aspects of bird evolution and its closest living biological ...

Nuclear fragments could help uncover the origins of life-supporting planets

2014-12-12
New research published today in the journal Physical Review Letters describes how recreating isotopes that occur when a star explodes, can help physicists understand where life-supporting elements may be found in space. For the first time, a research team led by the University of Surrey, Japan's RIKEN Nishina Centre and the University of Beihang, was able to observe the isotopes of certain elemental chemicals formed as a star explodes. The isotopes of these elements (samarium and gadolinium) are sensitive tracers of the way that stars explode, and therefore help in ...

Comet landing named Physics World Breakthrough of the Year

Comet landing named Physics World Breakthrough of the Year
2014-12-12
The first ever landing of a man-made probe onto a comet has been named Physics World Breakthrough of the Year for 2014. From a shortlist of 10 highly commended breakthroughs, the historic achievement by scientists working on the Rosetta mission was singled out by the Physics World editorial team for its significance and fundamental importance to space science. The landing of the Philae probe, which captivated not only the physics community but millions of people worldwide, was the culmination of 10 years' work by scientists at the European Space Agency (ESA), who successfully ...

LAST 30 PRESS RELEASES:

Three health tech innovators recognized for digital solutions to transform cardiovascular care

A sequence of human rights violations precedes mass atrocities, new research shows

Genetic basis of spring-loaded spider webs

Seeing persuasion in the brain

Allen Institute announces 2025 Next Generation Leaders

Digital divide narrows but gaps remain for Australians as GenAI use surges

Advanced molecular dynamics simulations capture RNA folding with high accuracy

Chinese Neurosurgical Journal Study unveils absorbable skull device that speeds healing

Heatwave predictions months in advance with machine learning: A new study delivers improved accuracy and efficiency

2.75-million-year-old stone tools may mark a turning point in human evolution

Climate intervention may not be enough to save coffee, chocolate and wine, new study finds

Advanced disease modelling shows some gut bacteria can spread as rapidly as viruses

Depletion of Ukraine’s soils threatens long-term global food security

Hornets in town: How top predators coexist

Transgender women do not have an increased risk of heart attack and stroke

Unexpectedly high concentrations of forever chemicals found in dead sea otters

Stress hormones silence key brain genes through chromatin-bound RNAs, study reveals

Groundbreaking review reveals how gut microbiota influences sleep disorders through the brain-gut axis

Breakthrough catalyst turns carbon dioxide into essential ingredient for clean fuels

New survey reveals men would rather sit in traffic than talk about prostate health

Casual teachers left behind: New study calls for better induction and support in schools

Adapting to change is the real key to unlocking GenAI’s potential, ECU research shows 

How algae help corals bounce back after bleaching 

Decoding sepsis: Unraveling key signaling pathways for targeted therapies

Lithium‑ion dynamic interface engineering of nano‑charged composite polymer electrolytes for solid‑state lithium‑metal batteries

Personalised care key to easing pain for people with Parkinson’s

UV light holds promise for energy-efficient desalination

Scientists discover new way to shape what a stem cell becomes

Global move towards plant-based diets could reshape farming jobs and reduce labor costs worldwide, Oxford study finds

New framework helps balance conservation and development in cold regions

[Press-News.org] A new trout species described from the Alakır Stream in Antalya, Turkey