Sentences with phrase «of lamprey»

Marilou Strickland of Lamprey River Real Estate in Raymond, New Hampshire, commented: «While home sellers accept that the market has a decreased value, they believe their property is the exception and it's still a struggle to convince them to list their houses in the right price range.

Contact: 508-685-3525; [email protected] Woods Hole, Mass. — Many of the genes involved in natural repair of the injured spinal cord of the lamprey are also active in the repair of the peripheral nervous system in mammals, according to a study by a collaborative group of scientists at the Marine Biological Laboratory (MBL) and other institutions.

Her laboratory at Caltech maintains one of the very few laboratory populations of lamprey in the world.

A side view of the lamprey gut, showing many large serotonergic neurons (green) sitting on the side of the gut.

«We were interested in the origins of lamprey gut neurons because in other vertebrates they arise from a particular embryonic cell type, called neural crest cells,» says Stephen Green, postdoctoral scholar in biology and biological engineering and co-first author on the paper.

The human brain is very different from the brain of a lamprey, but in both species the neocortex — the outer layers of the brain — is divided into two mirror - image hemispheres.

Scientists have taken advantage of the lamprey's simplicity — its neurons number in the thousands, while humans have billions — to produce the first complete blueprint of a vertebrate motor system.

They also claimed it contained other internal organ structures, such as gill sacs, that identified it as a vertebrate, and that the animal's teeth resembled those of lamprey.

Reticulospinal (RS) neurons constitute the main descending motor system of lampreys.

Not exact matches

Lamprey touches on a bunch of entrepreneurial topics, including why it's better to strive for unreasonable goals than to accomplish easy ones, how he made money as a kid and what he would change if he could go back in time.

biochemical evidence such as Cytochrome - cyto - C is just one of the thousands of sequences and is not proof of common ancestry, as there are more variations than similarities in the genetic code, on the other hand a study of the amino acid make - up reveals that man is closer to lamprey than are fish.

Researchers have tried lamprey - specific poisons to control their numbers, but more out - of - the - box ideas include using artificial lamprey pheromones to lure them to their doom, and designing a birth control drug that would only affect female lampreys.

Now, a detailed analysis of more than 1200 fossils that provide views of the creature's remains from many angles confirm its relation to the eellike creatures known as lampreys, the researchers report online today in Nature.

There is an easier way to deal with the Great Lakes infestation, however: If we could just convince Midwesterners to view lampreys as a delicacy, as they do in many parts of Europe, the problem might be solved.

Specifically, it seemed to be a type of fish called a lamprey.

In 1987, they discovered that the repetitive motions of swimming are choreographed by a group of neurons in the lamprey's spinal cord called the central pattern generator (CPG).

The tags emit tiny beeps that are recorded by underwater receivers and are designed to track many different species of fish including long - living fish such as sturgeon and migratory species of concern such as eel and lamprey.

Other researchers have placed similar robots, in the form of lobsters and lampreys, on the seafloor, and Jeremijenko hopes to have still more varieties hopping, slithering, and climbing their way into the environment soon.

All the muscles of our faces develop from a strip of cells at the base of the embryonic head, just as they do in lampreys, which belong to one of the oldest lineages of vertebrates alive today.

«The results of this study could be a critical step toward developing advanced technologies to control sea lampreys in the Great Lakes, which have caused unparalleled damage to fisheries,» said David Ullrich, chair of the GLFC.

«Remarkably, we didn't set out to study sex determination in sea lampreys — we were planning to study environmental effects on growth rates only,» said Nick Johnson, a USGS scientist and the lead author of the study.

Others run software based on «brainjacking», for example, the pair of robot legs that learned to walk using a lamprey's nerve signals.

«We were startled when we discovered that these data may also reveal how sex is determined because mechanisms of sex determination in lamprey are considered a holy grail for researchers.»

Scientists with the USGS and Michigan State University, funded by the Great Lakes Fishery Commission, found that slower sea lamprey growth rates during the larval phase of development may increase the odds of sea lampreys becoming male.

If lamprey software can help people with spinal injuries, it will be in the shape of animal brain circuitry realised on a chip wired into a human being — a kind of cyborg sandwich.

According to Biorob director Auke Ijspeert, this invention is the logical follow - up of research the lab has done into locomotion that included a salamander robot and a lamprey robot.

During the study, environments lacking plentiful food were male - skewed, with 78 percent of sea lampreys becoming male after three years, whereas environments more conducive to growth produced only 56 percent males.

Unlike most animals, sea lampreys, an invasive, parasitic species of fish damaging the Great Lakes, could become male or female depending on how quickly they grow, according to a U.S. Geological Survey study.

«Lamprey are eel - like parasites that use their tooth - like organs and raspy tongue to latch onto fish and suck out the blood, while hagfish scavenge by taking bites out of dead matter,» he says.

USGS sea lamprey expert Nick Johnson demonstrates the ridge of tissue, called a rope, along the back of a mature male sea lamprey.

They compared 146 genes in many chordates, including hagfish and lamprey (considered the most primitive vertebrates) and larvaceans, which are sea - faring relatives of sea squirts.

While the jawed vertebrate lineage spawned the majority of vertebrate life that exists on Earth today — «evolutionarily speaking, we are all bony fish,» says Gillis — lamprey and hagfish are the living remnants of a once extensive assemblage of primitively predatory jawless vertebrates.

Dams prevent lampreys from reaching mating grounds, chemical lampricides wipe out larvae, and officials use traps to pull lampreys out of the environment and kill them.

Thanks to the suite of control measures already developed, sea lamprey populations are 90 % lower than their peak populations were 60 years ago.

And indeed the 50 - centimeter - long, eellike creatures can wreak havoc on freshwater communities when they invade from the sea, with a single sea lamprey able to kill 18 kilograms of fish in its lifetime.

Sea lampreys are a particular problem in the Great Lakes regions of the United States and Canada.

With their suction cup mouths filled with concentric circles of pointy teeth that suck the body fluid of unsuspecting victims, lampreys may seem like the stuff of horror movies.

For decades, the fishery commission and a team of scientists and advocates across the public and private sectors have been developing measures to control sea lamprey populations.

In lampreys, for example, certain parts of the brain and the mouth that distinguish the animals from earlier relatives begin a rapid decay within 24 hours.

When sea lampreys (Petromyzon marinus) mature, growing their jawless toothy gapes and sucking blood of other fishes, iron concentrations in blood drop — to about 10 times healthy human levels.

With their suction cup mouths and concentric circles of pointy teeth that suck the body fluid of unsuspecting victims, lampreys may seem like the stuff of horror movies.

Lampreys may have gone parasitic early in the history of vertebrates and so have had a long time to evolve their vampiric specializations.

Studies of the modern species» blood - feeding physiology got a solid source of new data in 2013 when an international team decoded the genetic instruction book of the sea lamprey, a notorious invader of the Great Lakes.

Docker hopes for more work on lamprey detox tricks, such as the liver enzyme superoxide dismutase, which increases as concentrations of iron in the liver rise in adult pouched lampreys.

Just last year, some researchers declared that the extinct aquatic animal was a vertebrate, possibly a relative of today's lampreys.

More specialised brain regions arose in early fish, some of which resembled the living lampreys.

We first examined the morphology and development of the dorsal ridge in sea lamprey at various developmental stages (Fig. 2; supplementary material Fig.

While many would be repulsed by these creatures, lamprey are exciting to biologists because they are so primitive, retaining many characteristics similar to their ancient ancestors and thus offering answers to some of life's biggest evolutionary questions.

October 26, 2006 Scientists find lamprey a «living fossil» Scientists from the University of Witwatersrand in Johannesburg, South Africa, and the University of Chicago have uncovered a remarkably well - preserved fossil lamprey from the Devonian period that reveals today's lampreys as «living fossils» since they have remained largely unaltered for 360 million years.

«We knew that lamprey have many kinds of neural crest cells, but we knew little about which cells give rise to gut neurons.»